update kubernetes dependencies to v1.25.0

Signed-off-by: Humble Chirammal <hchiramm@redhat.com>

go.mod

@@ -3,7 +3,7 @@ module github.com/kubernetes-csi/external-snapshotter/v6
 go 1.17
 
 require (
-	github.com/container-storage-interface/spec v1.5.0
+	github.com/container-storage-interface/spec v1.6.0
 	github.com/evanphx/json-patch v4.12.0+incompatible
 	github.com/fsnotify/fsnotify v1.4.9
 	github.com/golang/mock v1.6.0
@@ -16,14 +16,14 @@ require (
 	github.com/prometheus/client_model v0.2.0
 	github.com/prometheus/common v0.32.1
 	github.com/spf13/cobra v1.4.0
-	google.golang.org/grpc v1.40.0
+	google.golang.org/grpc v1.47.0
-	k8s.io/api v0.24.3
+	k8s.io/api v0.25.0
-	k8s.io/apimachinery v0.24.3
+	k8s.io/apimachinery v0.25.0
-	k8s.io/client-go v0.24.3
+	k8s.io/client-go v0.25.0
-	k8s.io/component-base v0.24.3
+	k8s.io/component-base v0.25.0
-	k8s.io/component-helpers v0.24.3
+	k8s.io/component-helpers v0.25.0
-	k8s.io/klog/v2 v2.60.1
+	k8s.io/klog/v2 v2.70.1
-	k8s.io/kubernetes v1.24.3
+	k8s.io/kubernetes v1.25.0
 )
 
 require (
@@ -34,7 +34,7 @@ require (
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/emicklei/go-restful/v3 v3.8.0 // indirect
-	github.com/go-logr/logr v1.2.0 // indirect
+	github.com/go-logr/logr v1.2.3 // indirect
 	github.com/go-openapi/jsonpointer v0.19.5 // indirect
 	github.com/go-openapi/jsonreference v0.19.5 // indirect
 	github.com/go-openapi/swag v0.19.14 // indirect
@@ -54,53 +54,53 @@ require (
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/prometheus/procfs v0.7.3 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	golang.org/x/net v0.0.0-20220225172249-27dd8689420f // indirect
+	golang.org/x/net v0.0.0-20220722155237-a158d28d115b // indirect
 	golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8 // indirect
-	golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 // indirect
+	golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f // indirect
 	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 // indirect
 	golang.org/x/text v0.3.7 // indirect
 	golang.org/x/time v0.0.0-20220210224613-90d013bbcef8 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/genproto v0.0.0-20220107163113-42d7afdf6368 // indirect
+	google.golang.org/genproto v0.0.0-20220502173005-c8bf987b8c21 // indirect
-	google.golang.org/protobuf v1.27.1 // indirect
+	google.golang.org/protobuf v1.28.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 	k8s.io/klog v1.0.0 // indirect
-	k8s.io/kube-openapi v0.0.0-20220627174259-011e075b9cb8 // indirect
+	k8s.io/kube-openapi v0.0.0-20220803162953-67bda5d908f1 // indirect
-	k8s.io/utils v0.0.0-20220210201930-3a6ce19ff2f9 // indirect
+	k8s.io/utils v0.0.0-20220728103510-ee6ede2d64ed // indirect
-	sigs.k8s.io/json v0.0.0-20211208200746-9f7c6b3444d2 // indirect
+	sigs.k8s.io/json v0.0.0-20220713155537-f223a00ba0e2 // indirect
-	sigs.k8s.io/structured-merge-diff/v4 v4.2.1 // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect
 	sigs.k8s.io/yaml v1.3.0 // indirect
 )
 
 replace (
 	github.com/kubernetes-csi/external-snapshotter/client/v6 => ./client
-	k8s.io/api => k8s.io/api v0.24.3
+	k8s.io/api => k8s.io/api v0.25.0
-	k8s.io/apiextensions-apiserver => k8s.io/apiextensions-apiserver v0.24.3
+	k8s.io/apiextensions-apiserver => k8s.io/apiextensions-apiserver v0.25.0
-	k8s.io/apimachinery => k8s.io/apimachinery v0.24.3
+	k8s.io/apimachinery => k8s.io/apimachinery v0.26.0-alpha.0
-	k8s.io/apiserver => k8s.io/apiserver v0.24.3
+	k8s.io/apiserver => k8s.io/apiserver v0.25.0
-	k8s.io/cli-runtime => k8s.io/cli-runtime v0.24.3
+	k8s.io/cli-runtime => k8s.io/cli-runtime v0.25.0
-	k8s.io/client-go => k8s.io/client-go v0.24.3
+	k8s.io/client-go => k8s.io/client-go v0.25.0
-	k8s.io/cloud-provider => k8s.io/cloud-provider v0.24.3
+	k8s.io/cloud-provider => k8s.io/cloud-provider v0.25.0
-	k8s.io/cluster-bootstrap => k8s.io/cluster-bootstrap v0.24.3
+	k8s.io/cluster-bootstrap => k8s.io/cluster-bootstrap v0.25.0
-	k8s.io/code-generator => k8s.io/code-generator v0.24.3
+	k8s.io/code-generator => k8s.io/code-generator v0.25.0
-	k8s.io/component-base => k8s.io/component-base v0.24.3
+	k8s.io/component-base => k8s.io/component-base v0.25.0
-	k8s.io/component-helpers => k8s.io/component-helpers v0.24.3
+	k8s.io/component-helpers => k8s.io/component-helpers v0.25.0
-	k8s.io/controller-manager => k8s.io/controller-manager v0.24.3
+	k8s.io/controller-manager => k8s.io/controller-manager v0.25.0
-	k8s.io/cri-api => k8s.io/cri-api v0.24.3
+	k8s.io/cri-api => k8s.io/cri-api v0.25.0
-	k8s.io/csi-translation-lib => k8s.io/csi-translation-lib v0.24.3
+	k8s.io/csi-translation-lib => k8s.io/csi-translation-lib v0.25.0
-	k8s.io/kube-aggregator => k8s.io/kube-aggregator v0.24.3
+	k8s.io/kube-aggregator => k8s.io/kube-aggregator v0.25.0
-	k8s.io/kube-controller-manager => k8s.io/kube-controller-manager v0.24.3
+	k8s.io/kube-controller-manager => k8s.io/kube-controller-manager v0.25.0
-	k8s.io/kube-proxy => k8s.io/kube-proxy v0.24.3
+	k8s.io/kube-proxy => k8s.io/kube-proxy v0.25.0
-	k8s.io/kube-scheduler => k8s.io/kube-scheduler v0.24.3
+	k8s.io/kube-scheduler => k8s.io/kube-scheduler v0.25.0
-	k8s.io/kubectl => k8s.io/kubectl v0.24.3
+	k8s.io/kubectl => k8s.io/kubectl v0.25.0
-	k8s.io/kubelet => k8s.io/kubelet v0.24.3
+	k8s.io/kubelet => k8s.io/kubelet v0.25.0
-	k8s.io/legacy-cloud-providers => k8s.io/legacy-cloud-providers v0.24.3
+	k8s.io/legacy-cloud-providers => k8s.io/legacy-cloud-providers v0.25.0
-	k8s.io/metrics => k8s.io/metrics v0.24.3
+	k8s.io/metrics => k8s.io/metrics v0.25.0
-	k8s.io/mount-utils => k8s.io/mount-utils v0.24.3
+	k8s.io/mount-utils => k8s.io/mount-utils v0.25.0
-	k8s.io/pod-security-admission => k8s.io/pod-security-admission v0.24.3
+	k8s.io/pod-security-admission => k8s.io/pod-security-admission v0.25.0
-	k8s.io/sample-apiserver => k8s.io/sample-apiserver v0.24.3
+	k8s.io/sample-apiserver => k8s.io/sample-apiserver v0.25.0
-	k8s.io/sample-cli-plugin => k8s.io/sample-cli-plugin v0.24.3
+	k8s.io/sample-cli-plugin => k8s.io/sample-cli-plugin v0.25.0
-	k8s.io/sample-controller => k8s.io/sample-controller v0.24.3
+	k8s.io/sample-controller => k8s.io/sample-controller v0.25.0
 )

go.sum

@@ -1,5 +1,5 @@
 bazil.org/fuse v0.0.0-20160811212531-371fbbdaa898/go.mod h1:Xbm+BRKSBEpa4q4hTSxohYNQpsxXPbPry4JJWOB3LB8=
-bitbucket.org/bertimus9/systemstat v0.0.0-20180207000608-0eeff89b0690/go.mod h1:Ulb78X89vxKYgdL24HMTiXYHlyHEvruOj1ZPlqeNEZM=
+bitbucket.org/bertimus9/systemstat v0.5.0/go.mod h1:EkUWPp8lKFPMXP8vnbpT5JDI0W/sTiLZAvN8ONWErHY=
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
@@ -20,6 +20,13 @@ cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmW
 cloud.google.com/go v0.78.0/go.mod h1:QjdrLG0uq+YwhjoVOLsS1t7TW8fs36kLs4XO5R5ECHg=
 cloud.google.com/go v0.79.0/go.mod h1:3bzgcEeQlzbuEAYu4mrWhKqWjmpprinYgKJLgKHnbb8=
 cloud.google.com/go v0.81.0/go.mod h1:mk/AM35KwGk/Nm2YSeZbxXdrNK3KZOYHmLkOqC2V6E0=
+cloud.google.com/go v0.83.0/go.mod h1:Z7MJUsANfY0pYPdw0lbnivPx4/vhy/e2FEkSkF7vAVY=
+cloud.google.com/go v0.84.0/go.mod h1:RazrYuxIK6Kb7YrzzhPoLmCVzl7Sup4NrbKPg8KHSUM=
+cloud.google.com/go v0.87.0/go.mod h1:TpDYlFy7vuLzZMMZ+B6iRiELaY7z/gJPaqbMx6mlWcY=
+cloud.google.com/go v0.90.0/go.mod h1:kRX0mNRHe0e2rC6oNakvwQqzyDmg57xJ+SZU1eT2aDQ=
+cloud.google.com/go v0.93.3/go.mod h1:8utlLll2EF5XMAV15woO4lSbWQlk8rer9aLOfLh7+YI=
+cloud.google.com/go v0.94.1/go.mod h1:qAlAugsXlC+JWO+Bke5vCtc9ONxjQT3drlTTnAplMW4=
+cloud.google.com/go v0.97.0/go.mod h1:GF7l59pYBVlXQIBLx3a761cZ41F9bBH3JUlihCt2Udc=
 cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
 cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
 cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
@@ -43,19 +50,21 @@ dmitri.shuralyov.com/gpu/mtl v0.0.0-20201218220906-28db891af037/go.mod h1:H6x//7
 github.com/Azure/azure-sdk-for-go v55.0.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
 github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E=
 github.com/Azure/go-autorest v14.2.0+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
-github.com/Azure/go-autorest/autorest v0.11.18/go.mod h1:dSiJPy22c3u0OtOKDNttNgqpNFY/GeWa7GH/Pz56QRA=
+github.com/Azure/go-autorest/autorest v0.11.27/go.mod h1:7l8ybrIdUmGqZMTD0sRtAr8NvbHjfofbf8RSP2q7w7U=
-github.com/Azure/go-autorest/autorest/adal v0.9.13/go.mod h1:W/MM4U6nLxnIskrw4UwWzlHfGjwUS50aOsc/I3yuU8M=
+github.com/Azure/go-autorest/autorest/adal v0.9.18/go.mod h1:XVVeme+LZwABT8K5Lc3hA4nAe8LDBVle26gTrguhhPQ=
+github.com/Azure/go-autorest/autorest/adal v0.9.20/go.mod h1:XVVeme+LZwABT8K5Lc3hA4nAe8LDBVle26gTrguhhPQ=
 github.com/Azure/go-autorest/autorest/date v0.3.0/go.mod h1:BI0uouVdmngYNUzGWeSYnokU+TrmwEsOqdt8Y6sso74=
 github.com/Azure/go-autorest/autorest/mocks v0.4.1/go.mod h1:LTp+uSrOhSkaKrUy935gNZuuIPPVsHlr9DSOxSayd+k=
+github.com/Azure/go-autorest/autorest/mocks v0.4.2/go.mod h1:Vy7OitM9Kei0i1Oj+LvyAWMXJHeKH1MVlzFugfVrmyU=
 github.com/Azure/go-autorest/autorest/to v0.4.0/go.mod h1:fE8iZBn7LQR7zH/9XU2NcPR4o9jEImooCeWJcYV/zLE=
 github.com/Azure/go-autorest/autorest/validation v0.1.0/go.mod h1:Ha3z/SqBeaalWQvokg3NZAlQTalVMtOIAs1aGK7G6u8=
 github.com/Azure/go-autorest/logger v0.2.1/go.mod h1:T9E3cAhj2VqvPOtCYAvby9aBXkZmbF5NWuPV8+WeEW8=
 github.com/Azure/go-autorest/tracing v0.6.0/go.mod h1:+vhtPC754Xsa23ID7GlGsrdKBpUA79WCAKPPZVC2DeU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/GoogleCloudPlatform/k8s-cloud-provider v1.16.1-0.20210702024009-ea6160c1d0e3/go.mod h1:8XasY4ymP2V/tn2OOV9ZadmiTE1FIB/h3W+yNlPttKw=
+github.com/GoogleCloudPlatform/k8s-cloud-provider v1.18.1-0.20220218231025-f11817397a1b/go.mod h1:FNj4KYEAAHfYu68kRYolGoxkaJn+6mdEsaM12VTwuI0=
 github.com/JeffAshton/win_pdh v0.0.0-20161109143554-76bb4ee9f0ab/go.mod h1:3VYc5hodBMJ5+l/7J4xAyMeuM2PNuepvHlGs8yilUCA=
-github.com/MakeNowJust/heredoc v0.0.0-20170808103936-bb23615498cd/go.mod h1:64YHyfSL2R96J44Nlwm39UHepQbyR5q10x7iYa1ks2E=
+github.com/MakeNowJust/heredoc v1.0.0/go.mod h1:mG5amYoWBHf8vpLOuehzbGGw0EHxpZZ6lCpQ4fNJ8LE=
 github.com/Microsoft/go-winio v0.4.15/go.mod h1:tTuCMEN+UleMWgg9dVx4Hu52b1bJo+59jBh3ajtinzw=
 github.com/Microsoft/go-winio v0.4.17/go.mod h1:JPGBdM1cNvN/6ISo+n8V5iA4v8pBzdOpzfwIujj1a84=
 github.com/Microsoft/hcsshim v0.8.22/go.mod h1:91uVCVzvX2QD16sMCenoxxXo6L1wJnLMX2PSufFMtF0=
@@ -73,7 +82,7 @@ github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRF
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
-github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20210826220005-b48c857c3a0e/go.mod h1:F7bn7fEU90QkQ3tnmaTx3LTKLEDqnwWODIYppRQ5hnY=
+github.com/antlr/antlr4/runtime/Go/antlr v0.0.0-20220418222510-f25a4f6275ed/go.mod h1:F7bn7fEU90QkQ3tnmaTx3LTKLEDqnwWODIYppRQ5hnY=
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
@@ -91,7 +100,6 @@ github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
 github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c/go.mod h1:MKsuJmJgSg28kpZDP6UIiPt0e0Oz0kqKNGyRaWEPv84=
-github.com/bketelsen/crypt v0.0.4/go.mod h1:aI6NrJ0pMGgvZKL1iVgXLnfIFJtfV+bKCoqOes/6LfM=
 github.com/blang/semver v3.5.1+incompatible h1:cQNTCjp13qL8KC3Nbxr/y2Bqb63oX6wdnnjpJbkM4JQ=
 github.com/blang/semver v3.5.1+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
 github.com/blang/semver/v4 v4.0.0 h1:1PFHFE6yCCTv8C1TeyNNarDzntLi7wMI5i/pzqYIsAM=
@@ -105,7 +113,7 @@ github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghf
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
 github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/chai2010/gettext-go v0.0.0-20160711120539-c6fed771bfd5/go.mod h1:/iP1qXHoty45bqomnu2LM+VVyAEdWN+vtSHGlQgyxbw=
+github.com/chai2010/gettext-go v1.0.2/go.mod h1:y+wnP2cHYaVj19NZhYKAwEMH2CI1gNHeQQ+5AjwawxA=
 github.com/checkpoint-restore/go-criu/v5 v5.3.0/go.mod h1:E/eQpaFtUKGOOSEBZgmKAcn+zUUwWxqcaKZlF54wK8E=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
@@ -113,30 +121,33 @@ github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMn
 github.com/cilium/ebpf v0.4.0/go.mod h1:4tRaxcgiL706VnOzHOdBlY8IEAIdxINsQBcU4xJJXRs=
 github.com/cilium/ebpf v0.7.0/go.mod h1:/oI2+1shJiTGAMgl6/RgJr36Eo1jzrRcAWbcXO2usCA=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
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@@ -156,13 +167,12 @@ github.com/cyphar/filepath-securejoin v0.2.3/go.mod h1:aPGpWjXOXUn2NCNjFvBE6aRxG
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@@ -171,6 +181,7 @@ github.com/elazarl/goproxy v0.0.0-20180725130230-947c36da3153/go.mod h1:/Zj4wYkg
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@@ -180,6 +191,7 @@ github.com/envoyproxy/go-control-plane v0.9.7/go.mod h1:cwu0lG7PUMfa9snN8LXBig5y
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@@ -214,9 +226,11 @@ github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG
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@@ -233,11 +247,14 @@ github.com/godbus/dbus/v5 v5.0.3/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5x
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@@ -275,13 +292,16 @@ github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaS
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@@ -304,6 +324,7 @@ github.com/google/gofuzz v1.2.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/
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@@ -316,6 +337,9 @@ github.com/google/pprof v0.0.0-20201203190320-1bf35d6f28c2/go.mod h1:kpwsk12EmLe
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@@ -323,7 +347,8 @@ github.com/google/uuid v1.1.2 h1:EVhdT+1Kseyi1/pUmXKaFxYsDNy9RQYkMWRH68J/W7Y=
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@@ -362,7 +387,7 @@ github.com/heketi/tests v0.0.0-20151005000721-f3775cbcefd6/go.mod h1:xGMAM8JLi7U
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@@ -413,10 +438,8 @@ github.com/lithammer/dedent v1.1.0/go.mod h1:jrXYCQtgg0nJiN+StA2KgR7w6CiQNv9Fd/Z
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@@ -471,7 +494,6 @@ github.com/onsi/ginkgo v0.0.0-20170829012221-11459a886d9c/go.mod h1:lLunBs/Ym6LB
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@@ -486,8 +508,7 @@ github.com/onsi/gomega v1.19.0 h1:4ieX6qQjPP/BfC3mpsAtIGGlxTWPeA3Inl/7DtXw1tw=
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@@ -495,7 +516,6 @@ github.com/opencontainers/selinux v1.10.0/go.mod h1:2i0OySw99QjzBBQByd1Gr9gSjvuh
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@@ -505,12 +525,13 @@ github.com/pkg/sftp v1.10.1/go.mod h1:lYOWFsE0bwd1+KfKJaKeuokY15vzFx25BLbzYYoAxZ
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@@ -534,7 +555,6 @@ github.com/prometheus/procfs v0.6.0/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1
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@@ -547,7 +567,7 @@ github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQD
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@@ -566,23 +586,17 @@ github.com/spf13/afero v1.1.2/go.mod h1:j4pytiNVoe2o6bmDsKpLACNPDBIoEAkihy7loJ1B
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@@ -606,7 +620,7 @@ github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df/go.mod h1:JP3t17
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@@ -614,18 +628,16 @@ github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9de
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 github.com/yuin/goldmark v1.4.1/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.etcd.io/bbolt v1.3.6/go.mod h1:qXsaaIqmgQH0T+OPdb99Bf+PKfBBQVAdyD6TY9G8XM4=
-go.etcd.io/etcd/api/v3 v3.5.0/go.mod h1:cbVKeC6lCfl7j/8jBhAK6aIYO9XOjdptoxU/nLQcPvs=
+go.etcd.io/etcd/api/v3 v3.5.4/go.mod h1:5GB2vv4A4AOn3yk7MftYGHkUfGtDHnEraIjym4dYz5A=
-go.etcd.io/etcd/api/v3 v3.5.1/go.mod h1:cbVKeC6lCfl7j/8jBhAK6aIYO9XOjdptoxU/nLQcPvs=
+go.etcd.io/etcd/client/pkg/v3 v3.5.4/go.mod h1:IJHfcCEKxYu1Os13ZdwCwIUTUVGYTSAM3YSwc9/Ac1g=
-go.etcd.io/etcd/client/pkg/v3 v3.5.0/go.mod h1:IJHfcCEKxYu1Os13ZdwCwIUTUVGYTSAM3YSwc9/Ac1g=
+go.etcd.io/etcd/client/v2 v2.305.4/go.mod h1:Ud+VUwIi9/uQHOMA+4ekToJ12lTxlv0zB/+DHwTGEbU=
-go.etcd.io/etcd/client/pkg/v3 v3.5.1/go.mod h1:IJHfcCEKxYu1Os13ZdwCwIUTUVGYTSAM3YSwc9/Ac1g=
+go.etcd.io/etcd/client/v3 v3.5.4/go.mod h1:ZaRkVgBZC+L+dLCjTcF1hRXpgZXQPOvnA/Ak/gq3kiY=
-go.etcd.io/etcd/client/v2 v2.305.0/go.mod h1:h9puh54ZTgAKtEbut2oe9P4L/oqKCVB6xsXlzd7alYQ=
+go.etcd.io/etcd/pkg/v3 v3.5.4/go.mod h1:OI+TtO+Aa3nhQSppMbwE4ld3uF1/fqqwbpfndbbrEe0=
-go.etcd.io/etcd/client/v3 v3.5.0/go.mod h1:AIKXXVX/DQXtfTEqBryiLTUXwON+GuvO6Z7lLS/oTh0=
+go.etcd.io/etcd/raft/v3 v3.5.4/go.mod h1:SCuunjYvZFC0fBX0vxMSPjuZmpcSk+XaAcMrD6Do03w=
-go.etcd.io/etcd/client/v3 v3.5.1/go.mod h1:OnjH4M8OnAotwaB2l9bVgZzRFKru7/ZMoS46OtKyd3Q=
+go.etcd.io/etcd/server/v3 v3.5.4/go.mod h1:S5/YTU15KxymM5l3T6b09sNOHPXqGYIZStpuuGbb65c=
-go.etcd.io/etcd/pkg/v3 v3.5.0/go.mod h1:UzJGatBQ1lXChBkQF0AuAtkRQMYnHubxAEYIrC3MSsE=
-go.etcd.io/etcd/raft/v3 v3.5.0/go.mod h1:UFOHSIvO/nKwd4lhkwabrTD3cqW5yVyYYf/KlD00Szc=
-go.etcd.io/etcd/server/v3 v3.5.0/go.mod h1:3Ah5ruV+M+7RZr0+Y/5mNLwC+eQlni+mQmOVdCRJoS4=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
@@ -634,8 +646,10 @@ go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.opencensus.io v0.22.5/go.mod h1:5pWMHQbX5EPX2/62yrJeAkowc+lfs/XD7Uxpq3pI6kk=
 go.opencensus.io v0.23.0/go.mod h1:XItmlyltB5F7CS4xOC1DcqMoFqwtC6OG2xF7mCv7P7E=
 go.opentelemetry.io/contrib v0.20.0/go.mod h1:G/EtFaa6qaN7+LxqfIAT3GiZa7Wv5DTBUzl5H4LY0Kc=
+go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful v0.20.0/go.mod h1:oQkZOyq61qZBItEFqhfpobK6X/oDPR7/Qr+MXjVSTks=
 go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.20.0/go.mod h1:oVGt1LRbBOBq1A5BQLlUg9UaU/54aiHw8cgjV3aWZ/E=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.20.0/go.mod h1:2AboqHi0CiIZU0qwhtUfCYD1GeUzvvIXWNkhDt7ZMG4=
+go.opentelemetry.io/contrib/propagators v0.20.0/go.mod h1:yLmt93MeSiARUwrK57bOZ4FBruRN4taLiW1lcGfnOes=
 go.opentelemetry.io/otel v0.20.0/go.mod h1:Y3ugLH2oa81t5QO+Lty+zXf8zC9L26ax4Nzoxm/dooo=
 go.opentelemetry.io/otel/exporters/otlp v0.20.0/go.mod h1:YIieizyaN77rtLJra0buKiNBOm9XQfkPEKBeuhoMwAM=
 go.opentelemetry.io/otel/metric v0.20.0/go.mod h1:598I5tYlH1vzBjn+BTuhzTCSb/9debfNp6R3s7Pr1eU=
@@ -663,9 +677,10 @@ golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20190820162420-60c769a6c586/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.0.0-20220214200702-86341886e292/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/crypto v0.0.0-20211215153901-e495a2d5b3d3/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/crypto v0.0.0-20220131195533-30dcbda58838/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/exp v0.0.0-20180321215751-8460e604b9de/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20180807140117-3d87b88a115f/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -712,6 +727,7 @@ golang.org/x/mod v0.4.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.1/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3/go.mod h1:3p9vT2HGsQu2K1YbXdKPJLVgG5VJdoTa1poYQBtP1AY=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -762,12 +778,12 @@ golang.org/x/net v0.0.0-20210428140749-89ef3d95e781/go.mod h1:OJAsFXCWl8Ukc7SiCT
 golang.org/x/net v0.0.0-20210503060351-7fd8e65b6420/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20210520170846-37e1c6afe023/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20210825183410-e898025ed96a/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
-golang.org/x/net v0.0.0-20220225172249-27dd8689420f h1:oA4XRj0qtSt8Yo1Zms0CUlsT3KG69V2UGQWPBxujDmc=
 golang.org/x/net v0.0.0-20220225172249-27dd8689420f/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b h1:PxfKdU9lEEDYjdIzOtC4qFWgkU2rGHdKlKowJSMN9h0=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -779,9 +795,11 @@ golang.org/x/oauth2 v0.0.0-20201208152858-08078c50e5b5/go.mod h1:KelEdhl1UZF7XfJ
 golang.org/x/oauth2 v0.0.0-20210218202405-ba52d332ba99/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210220000619-9bb904979d93/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210313182246-cd4f82c27b84/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
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 golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
+golang.org/x/oauth2 v0.0.0-20210628180205-a41e5a781914/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
+golang.org/x/oauth2 v0.0.0-20210805134026-6f1e6394065a/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
+golang.org/x/oauth2 v0.0.0-20210819190943-2bc19b11175f/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
+golang.org/x/oauth2 v0.0.0-20211005180243-6b3c2da341f1/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8 h1:RerP+noqYHUQ8CMRcPlC2nvTa4dcBIjegkuWdcUDuqg=
 golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -795,6 +813,7 @@ golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -839,7 +858,6 @@ golang.org/x/sys v0.0.0-20200331124033-c3d80250170d/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200501052902-10377860bb8e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200511232937-7e40ca221e25/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200515095857-1151b9dac4a9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200519105757-fe76b779f299/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200523222454-059865788121/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200615200032-f1bc736245b1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -862,13 +880,17 @@ golang.org/x/sys v0.0.0-20210324051608-47abb6519492/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210403161142-5e06dd20ab57/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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+golang.org/x/sys v0.0.0-20210514084401-e8d321eab015/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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 golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211025201205-69cdffdb9359/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211116061358-0a5406a5449c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -876,8 +898,9 @@ golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220209214540-3681064d5158/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220319134239-a9b59b0215f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 h1:JGgROgKl9N8DuW20oFS5gxc+lE67/N3FcwmBPMe7ArY=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
@@ -958,9 +981,12 @@ golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4f
 golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
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 golang.org/x/tools v0.1.2/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
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 golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.10-0.20220218145154-897bd77cd717/go.mod h1:Uh6Zz+xoGYZom868N8YTex3t7RhtHDBrE8Gzo9bV56E=
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@@ -993,8 +1019,15 @@ google.golang.org/api v0.36.0/go.mod h1:+z5ficQTmoYpPn8LCUNVpK5I7hwkpjbcgqA7I34q
 google.golang.org/api v0.40.0/go.mod h1:fYKFpnQN0DsDSKRVRcQSDQNtqWPfM9i+zNPxepjRCQ8=
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 google.golang.org/api v0.43.0/go.mod h1:nQsDGjRXMo4lvh5hP0TKqF244gqhGcr/YSIykhUk/94=
-google.golang.org/api v0.44.0/go.mod h1:EBOGZqzyhtvMDoxwS97ctnh0zUmYY6CxqXsc1AvkYD8=
+google.golang.org/api v0.47.0/go.mod h1:Wbvgpq1HddcWVtzsVLyfLp8lDg6AA241LmgIL59tHXo=
-google.golang.org/api v0.46.0/go.mod h1:ceL4oozhkAiTID8XMmJBsIxID/9wMXJVVFXPg4ylg3I=
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@@ -1038,7 +1071,6 @@ google.golang.org/genproto v0.0.0-20200804131852-c06518451d9c/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20200825200019-8632dd797987/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201019141844-1ed22bb0c154/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20201102152239-715cce707fb0/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201210142538-e3217bee35cc/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
@@ -1048,11 +1080,25 @@ google.golang.org/genproto v0.0.0-20210303154014-9728d6b83eeb/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20210310155132-4ce2db91004e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210319143718-93e7006c17a6/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
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-google.golang.org/genproto v0.0.0-20210429181445-86c259c2b4ab/go.mod h1:P3QM42oQyzQSnHPnZ/vqoCdDmzH28fzWByN9asMeM8A=
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@@ -1074,9 +1120,15 @@ google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAG
 google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.36.1/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.37.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
+google.golang.org/grpc v1.37.1/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
 google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
-google.golang.org/grpc v1.40.0 h1:AGJ0Ih4mHjSeibYkFGh1dD9KJ/eOtZ93I6hoHhukQ5Q=
+google.golang.org/grpc v1.39.0/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
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+google.golang.org/grpc v1.46.0/go.mod h1:vN9eftEi1UMyUsIF80+uQXhHjbXYbm0uXoFCACuMGWk=
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 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -1089,8 +1141,9 @@ google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGj
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
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 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
+google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
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@@ -1103,7 +1156,6 @@ gopkg.in/gcfg.v1 v1.2.0/go.mod h1:yesOnuUOFQAhST5vPY4nbZsb/huCgGGXlipJsBn0b3o=
 gopkg.in/inf.v0 v0.9.1 h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=
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 gopkg.in/ini.v1 v1.51.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
-gopkg.in/ini.v1 v1.62.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
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@@ -1122,8 +1174,9 @@ gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
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-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
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@@ -1133,26 +1186,25 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
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@@ -1194,16 +1248,18 @@ rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8
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vendor/github.com/container-storage-interface/spec/lib/go/csi/csi.pb.go

@@ -217,7 +217,9 @@ const (
 	// See VolumeExpansion for details.
 	ControllerServiceCapability_RPC_EXPAND_VOLUME ControllerServiceCapability_RPC_Type = 9
 	// Indicates the SP supports the
-	// ListVolumesResponse.entry.published_nodes field
+	// ListVolumesResponse.entry.published_node_ids field and the
+	// ControllerGetVolumeResponse.published_node_ids field.
+	// The SP MUST also support PUBLISH_UNPUBLISH_VOLUME.
 	ControllerServiceCapability_RPC_LIST_VOLUMES_PUBLISHED_NODES ControllerServiceCapability_RPC_Type = 10
 	// Indicates that the Controller service can report volume
 	// conditions.
@@ -2678,7 +2680,7 @@ type ControllerGetVolumeResponse_VolumeStatus struct {
 	// A list of all the `node_id` of nodes that this volume is
 	// controller published on.
 	// This field is OPTIONAL.
-	// This field MUST be specified if the PUBLISH_UNPUBLISH_VOLUME
+	// This field MUST be specified if the LIST_VOLUMES_PUBLISHED_NODES
 	// controller capability is supported.
 	// published_node_ids MAY include nodes not published to or
 	// reported by the SP. The CO MUST be resilient to that.
@@ -5058,245 +5060,245 @@ func init() {
 }
 
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-	0x9a, 0xe9, 0xf1, 0xc2, 0x30, 0x14, 0x87, 0xfd, 0x2b, 0xc8, 0xf8, 0xef, 0x79, 0xb4, 0x31, 0x22,
+	0x65, 0x50, 0xc8, 0x23, 0x5c, 0x68, 0xa6, 0xc7, 0x0b, 0xa3, 0x50, 0x1c, 0xf6, 0xcf, 0x21, 0xe3,
-	0xec, 0xe0, 0x37, 0xa3, 0x11, 0xfc, 0x3b, 0xe3, 0x77, 0x32, 0x7e, 0xa9, 0xc2, 0xdc, 0xcb, 0xad,
+	0xbf, 0xe7, 0xd1, 0xd6, 0x98, 0xb0, 0x83, 0xdf, 0x8e, 0x46, 0xf0, 0xef, 0x8c, 0xdf, 0xc9, 0xf8,
-	0xa1, 0x38, 0x6e, 0xb7, 0xe8, 0x8a, 0x70, 0x07, 0x6e, 0x31, 0x18, 0x0d, 0x0f, 0xdc, 0x62, 0x48,
+	0xa5, 0x0a, 0x73, 0x2f, 0x77, 0x47, 0xe2, 0xb8, 0xdd, 0xa2, 0x2b, 0xc2, 0x1d, 0xba, 0xc5, 0x60,
-	0x48, 0x2c, 0x4c, 0xed, 0x3c, 0x03, 0x90, 0x3b, 0xbd, 0xb7, 0xb2, 0x84, 0xd5, 0x7e, 0x17, 0xad,
+	0x34, 0x3c, 0x74, 0x8b, 0x21, 0x21, 0xb1, 0x30, 0xb3, 0xf7, 0x18, 0x40, 0xee, 0xf6, 0x5f, 0xc9,
-	0x05, 0x3a, 0x50, 0x25, 0xb5, 0xdf, 0xad, 0xf5, 0xac, 0xcc, 0xcb, 0xc8, 0xfe, 0x7c, 0x86, 0xe4,
+	0x12, 0x56, 0x07, 0x3d, 0xb4, 0x11, 0xe8, 0x40, 0x95, 0xd5, 0x41, 0xaf, 0xde, 0xb7, 0x32, 0x2f,
-	0x5b, 0xb3, 0x84, 0xc0, 0x1a, 0xd8, 0xa9, 0x40, 0x66, 0x40, 0x2d, 0x91, 0x10, 0x0a, 0xdd, 0x0c,
+	0x23, 0xf7, 0xf3, 0x39, 0x92, 0x6f, 0xcd, 0x13, 0x02, 0x6b, 0x60, 0xaf, 0x0a, 0x99, 0x21, 0xb5,
-	0xe5, 0x41, 0xfa, 0xf9, 0x3e, 0x46, 0x0b, 0x0e, 0x23, 0x32, 0xba, 0xf3, 0x09, 0x40, 0xd3, 0x50,
+	0x44, 0x42, 0x28, 0x74, 0x27, 0x94, 0x07, 0xe9, 0xe7, 0xfb, 0x18, 0x2d, 0x39, 0x8c, 0xc8, 0xe8,
-	0x24, 0x1a, 0xc3, 0xa1, 0xf5, 0x00, 0x9f, 0xe7, 0x0a, 0xee, 0xb4, 0x6c, 0x1e, 0x7f, 0xc1, 0x84,
+	0xde, 0x27, 0x00, 0x2d, 0x43, 0x91, 0x68, 0x0c, 0x87, 0x36, 0x03, 0x7c, 0x9e, 0x28, 0xb8, 0xdb,
-	0x69, 0x1a, 0x0a, 0x8d, 0xf4, 0x76, 0x7e, 0x04, 0x69, 0x2a, 0xcc, 0x89, 0x85, 0x37, 0x8a, 0x9e,
+	0xb6, 0x79, 0xfc, 0x05, 0x13, 0xa6, 0x65, 0x28, 0x34, 0xd2, 0xdb, 0xfb, 0x11, 0xa4, 0xa9, 0x30,
-	0xc9, 0x40, 0x57, 0x4f, 0x46, 0x76, 0x4a, 0x30, 0x4f, 0x19, 0xb0, 0xac, 0x11, 0x6d, 0x04, 0x58,
+	0x67, 0x16, 0xde, 0x38, 0x7a, 0x26, 0x03, 0x5d, 0x3d, 0x19, 0xd9, 0x2b, 0xc3, 0x22, 0x65, 0xc0,
-	0x1c, 0xd0, 0x11, 0x1f, 0x93, 0x39, 0x42, 0xc6, 0xc6, 0x76, 0x0a, 0x30, 0x67, 0xb3, 0x31, 0xdf,
+	0xb2, 0x46, 0xb4, 0x15, 0x60, 0x71, 0x44, 0x47, 0x7c, 0x4c, 0x16, 0x08, 0x19, 0x1b, 0xdb, 0x2b,
-	0x6a, 0x2d, 0x74, 0x23, 0x84, 0x8b, 0x35, 0xe0, 0x63, 0x92, 0x66, 0x4c, 0xac, 0xa1, 0x81, 0x28,
+	0xc2, 0x82, 0xcd, 0xc6, 0x7c, 0xa5, 0xb5, 0xd1, 0xed, 0x10, 0x2e, 0xd6, 0x80, 0x8f, 0x49, 0x9a,
-	0xf6, 0x3f, 0x9b, 0x06, 0x45, 0x61, 0x99, 0x5d, 0xa8, 0x28, 0x6c, 0xac, 0x90, 0x7c, 0x13, 0x6f,
+	0x31, 0xb1, 0x86, 0x86, 0xa2, 0xd8, 0xff, 0x67, 0x1a, 0x14, 0x85, 0x65, 0x76, 0xa1, 0xa2, 0xb0,
-	0x1a, 0xca, 0x71, 0x8a, 0x10, 0xfd, 0xe0, 0xff, 0x02, 0x00, 0x00, 0xff, 0xff, 0x5e, 0xa7, 0xda,
+	0xb1, 0x62, 0xf2, 0x65, 0xbc, 0x65, 0x28, 0xa7, 0x29, 0x42, 0xf4, 0x83, 0xff, 0x0b, 0x00, 0x00,
-	0x94, 0x19, 0x3d, 0x00, 0x00,
+	0xff, 0xff, 0x2e, 0xde, 0xed, 0x1d, 0x14, 0x3d, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.

vendor/github.com/go-logr/logr/README.md

@@ -105,14 +105,18 @@ with higher verbosity means more (and less important) logs will be generated.
 There are implementations for the following logging libraries:
 
 - **a function** (can bridge to non-structured libraries): [funcr](https://github.com/go-logr/logr/tree/master/funcr)
+- **a testing.T** (for use in Go tests, with JSON-like output): [testr](https://github.com/go-logr/logr/tree/master/testr)
 - **github.com/google/glog**: [glogr](https://github.com/go-logr/glogr)
 - **k8s.io/klog** (for Kubernetes): [klogr](https://git.k8s.io/klog/klogr)
+- **a testing.T** (with klog-like text output): [ktesting](https://git.k8s.io/klog/ktesting)
 - **go.uber.org/zap**: [zapr](https://github.com/go-logr/zapr)
 - **log** (the Go standard library logger): [stdr](https://github.com/go-logr/stdr)
 - **github.com/sirupsen/logrus**: [logrusr](https://github.com/bombsimon/logrusr)
 - **github.com/wojas/genericr**: [genericr](https://github.com/wojas/genericr) (makes it easy to implement your own backend)
 - **logfmt** (Heroku style [logging](https://www.brandur.org/logfmt)): [logfmtr](https://github.com/iand/logfmtr)
 - **github.com/rs/zerolog**: [zerologr](https://github.com/go-logr/zerologr)
+- **github.com/go-kit/log**: [gokitlogr](https://github.com/tonglil/gokitlogr) (also compatible with github.com/go-kit/kit/log since v0.12.0)
+- **bytes.Buffer** (writing to a buffer): [bufrlogr](https://github.com/tonglil/buflogr) (useful for ensuring values were logged, like during testing)
 
 ## FAQ
 

vendor/github.com/go-logr/logr/logr.go

@@ -43,7 +43,9 @@ limitations under the License.
 //
 // Info() and Error() are very similar, but they are separate methods so that
 // LogSink implementations can choose to do things like attach additional
-// information (such as stack traces) on calls to Error().
+// information (such as stack traces) on calls to Error(). Error() messages are
+// always logged, regardless of the current verbosity.  If there is no error
+// instance available, passing nil is valid.
 //
 // Verbosity
 //
@@ -53,6 +55,7 @@ limitations under the License.
 // Log-lines with V-levels that are not enabled (as per the LogSink) will not
 // be written.  Level V(0) is the default, and logger.V(0).Info() has the same
 // meaning as logger.Info().  Negative V-levels have the same meaning as V(0).
+// Error messages do not have a verbosity level and are always logged.
 //
 // Where we might have written:
 //   if flVerbose >= 2 {
@@ -112,6 +115,15 @@ limitations under the License.
 // may be any Go value, but how the value is formatted is determined by the
 // LogSink implementation.
 //
+// Logger instances are meant to be passed around by value. Code that receives
+// such a value can call its methods without having to check whether the
+// instance is ready for use.
+//
+// Calling methods with the null logger (Logger{}) as instance will crash
+// because it has no LogSink. Therefore this null logger should never be passed
+// around. For cases where passing a logger is optional, a pointer to Logger
+// should be used.
+//
 // Key Naming Conventions
 //
 // Keys are not strictly required to conform to any specification or regex, but
@@ -253,11 +265,13 @@ func (l Logger) Info(msg string, keysAndValues ...interface{}) {
 // Error logs an error, with the given message and key/value pairs as context.
 // It functions similarly to Info, but may have unique behavior, and should be
 // preferred for logging errors (see the package documentations for more
-// information).
+// information). The log message will always be emitted, regardless of
+// verbosity level.
 //
 // The msg argument should be used to add context to any underlying error,
 // while the err argument should be used to attach the actual error that
-// triggered this log line, if present.
+// triggered this log line, if present. The err parameter is optional
+// and nil may be passed instead of an error instance.
 func (l Logger) Error(err error, msg string, keysAndValues ...interface{}) {
 	if withHelper, ok := l.sink.(CallStackHelperLogSink); ok {
 		withHelper.GetCallStackHelper()()

vendor/github.com/golang/protobuf/jsonpb/decode.go

@@ -0,0 +1,524 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package jsonpb
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"math"
+	"reflect"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/golang/protobuf/proto"
+	"google.golang.org/protobuf/encoding/protojson"
+	protoV2 "google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+)
+
+const wrapJSONUnmarshalV2 = false
+
+// UnmarshalNext unmarshals the next JSON object from d into m.
+func UnmarshalNext(d *json.Decoder, m proto.Message) error {
+	return new(Unmarshaler).UnmarshalNext(d, m)
+}
+
+// Unmarshal unmarshals a JSON object from r into m.
+func Unmarshal(r io.Reader, m proto.Message) error {
+	return new(Unmarshaler).Unmarshal(r, m)
+}
+
+// UnmarshalString unmarshals a JSON object from s into m.
+func UnmarshalString(s string, m proto.Message) error {
+	return new(Unmarshaler).Unmarshal(strings.NewReader(s), m)
+}
+
+// Unmarshaler is a configurable object for converting from a JSON
+// representation to a protocol buffer object.
+type Unmarshaler struct {
+	// AllowUnknownFields specifies whether to allow messages to contain
+	// unknown JSON fields, as opposed to failing to unmarshal.
+	AllowUnknownFields bool
+
+	// AnyResolver is used to resolve the google.protobuf.Any well-known type.
+	// If unset, the global registry is used by default.
+	AnyResolver AnyResolver
+}
+
+// JSONPBUnmarshaler is implemented by protobuf messages that customize the way
+// they are unmarshaled from JSON. Messages that implement this should also
+// implement JSONPBMarshaler so that the custom format can be produced.
+//
+// The JSON unmarshaling must follow the JSON to proto specification:
+//	https://developers.google.com/protocol-buffers/docs/proto3#json
+//
+// Deprecated: Custom types should implement protobuf reflection instead.
+type JSONPBUnmarshaler interface {
+	UnmarshalJSONPB(*Unmarshaler, []byte) error
+}
+
+// Unmarshal unmarshals a JSON object from r into m.
+func (u *Unmarshaler) Unmarshal(r io.Reader, m proto.Message) error {
+	return u.UnmarshalNext(json.NewDecoder(r), m)
+}
+
+// UnmarshalNext unmarshals the next JSON object from d into m.
+func (u *Unmarshaler) UnmarshalNext(d *json.Decoder, m proto.Message) error {
+	if m == nil {
+		return errors.New("invalid nil message")
+	}
+
+	// Parse the next JSON object from the stream.
+	raw := json.RawMessage{}
+	if err := d.Decode(&raw); err != nil {
+		return err
+	}
+
+	// Check for custom unmarshalers first since they may not properly
+	// implement protobuf reflection that the logic below relies on.
+	if jsu, ok := m.(JSONPBUnmarshaler); ok {
+		return jsu.UnmarshalJSONPB(u, raw)
+	}
+
+	mr := proto.MessageReflect(m)
+
+	// NOTE: For historical reasons, a top-level null is treated as a noop.
+	// This is incorrect, but kept for compatibility.
+	if string(raw) == "null" && mr.Descriptor().FullName() != "google.protobuf.Value" {
+		return nil
+	}
+
+	if wrapJSONUnmarshalV2 {
+		// NOTE: If input message is non-empty, we need to preserve merge semantics
+		// of the old jsonpb implementation. These semantics are not supported by
+		// the protobuf JSON specification.
+		isEmpty := true
+		mr.Range(func(protoreflect.FieldDescriptor, protoreflect.Value) bool {
+			isEmpty = false // at least one iteration implies non-empty
+			return false
+		})
+		if !isEmpty {
+			// Perform unmarshaling into a newly allocated, empty message.
+			mr = mr.New()
+
+			// Use a defer to copy all unmarshaled fields into the original message.
+			dst := proto.MessageReflect(m)
+			defer mr.Range(func(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool {
+				dst.Set(fd, v)
+				return true
+			})
+		}
+
+		// Unmarshal using the v2 JSON unmarshaler.
+		opts := protojson.UnmarshalOptions{
+			DiscardUnknown: u.AllowUnknownFields,
+		}
+		if u.AnyResolver != nil {
+			opts.Resolver = anyResolver{u.AnyResolver}
+		}
+		return opts.Unmarshal(raw, mr.Interface())
+	} else {
+		if err := u.unmarshalMessage(mr, raw); err != nil {
+			return err
+		}
+		return protoV2.CheckInitialized(mr.Interface())
+	}
+}
+
+func (u *Unmarshaler) unmarshalMessage(m protoreflect.Message, in []byte) error {
+	md := m.Descriptor()
+	fds := md.Fields()
+
+	if jsu, ok := proto.MessageV1(m.Interface()).(JSONPBUnmarshaler); ok {
+		return jsu.UnmarshalJSONPB(u, in)
+	}
+
+	if string(in) == "null" && md.FullName() != "google.protobuf.Value" {
+		return nil
+	}
+
+	switch wellKnownType(md.FullName()) {
+	case "Any":
+		var jsonObject map[string]json.RawMessage
+		if err := json.Unmarshal(in, &jsonObject); err != nil {
+			return err
+		}
+
+		rawTypeURL, ok := jsonObject["@type"]
+		if !ok {
+			return errors.New("Any JSON doesn't have '@type'")
+		}
+		typeURL, err := unquoteString(string(rawTypeURL))
+		if err != nil {
+			return fmt.Errorf("can't unmarshal Any's '@type': %q", rawTypeURL)
+		}
+		m.Set(fds.ByNumber(1), protoreflect.ValueOfString(typeURL))
+
+		var m2 protoreflect.Message
+		if u.AnyResolver != nil {
+			mi, err := u.AnyResolver.Resolve(typeURL)
+			if err != nil {
+				return err
+			}
+			m2 = proto.MessageReflect(mi)
+		} else {
+			mt, err := protoregistry.GlobalTypes.FindMessageByURL(typeURL)
+			if err != nil {
+				if err == protoregistry.NotFound {
+					return fmt.Errorf("could not resolve Any message type: %v", typeURL)
+				}
+				return err
+			}
+			m2 = mt.New()
+		}
+
+		if wellKnownType(m2.Descriptor().FullName()) != "" {
+			rawValue, ok := jsonObject["value"]
+			if !ok {
+				return errors.New("Any JSON doesn't have 'value'")
+			}
+			if err := u.unmarshalMessage(m2, rawValue); err != nil {
+				return fmt.Errorf("can't unmarshal Any nested proto %v: %v", typeURL, err)
+			}
+		} else {
+			delete(jsonObject, "@type")
+			rawJSON, err := json.Marshal(jsonObject)
+			if err != nil {
+				return fmt.Errorf("can't generate JSON for Any's nested proto to be unmarshaled: %v", err)
+			}
+			if err = u.unmarshalMessage(m2, rawJSON); err != nil {
+				return fmt.Errorf("can't unmarshal Any nested proto %v: %v", typeURL, err)
+			}
+		}
+
+		rawWire, err := protoV2.Marshal(m2.Interface())
+		if err != nil {
+			return fmt.Errorf("can't marshal proto %v into Any.Value: %v", typeURL, err)
+		}
+		m.Set(fds.ByNumber(2), protoreflect.ValueOfBytes(rawWire))
+		return nil
+	case "BoolValue", "BytesValue", "StringValue",
+		"Int32Value", "UInt32Value", "FloatValue",
+		"Int64Value", "UInt64Value", "DoubleValue":
+		fd := fds.ByNumber(1)
+		v, err := u.unmarshalValue(m.NewField(fd), in, fd)
+		if err != nil {
+			return err
+		}
+		m.Set(fd, v)
+		return nil
+	case "Duration":
+		v, err := unquoteString(string(in))
+		if err != nil {
+			return err
+		}
+		d, err := time.ParseDuration(v)
+		if err != nil {
+			return fmt.Errorf("bad Duration: %v", err)
+		}
+
+		sec := d.Nanoseconds() / 1e9
+		nsec := d.Nanoseconds() % 1e9
+		m.Set(fds.ByNumber(1), protoreflect.ValueOfInt64(int64(sec)))
+		m.Set(fds.ByNumber(2), protoreflect.ValueOfInt32(int32(nsec)))
+		return nil
+	case "Timestamp":
+		v, err := unquoteString(string(in))
+		if err != nil {
+			return err
+		}
+		t, err := time.Parse(time.RFC3339Nano, v)
+		if err != nil {
+			return fmt.Errorf("bad Timestamp: %v", err)
+		}
+
+		sec := t.Unix()
+		nsec := t.Nanosecond()
+		m.Set(fds.ByNumber(1), protoreflect.ValueOfInt64(int64(sec)))
+		m.Set(fds.ByNumber(2), protoreflect.ValueOfInt32(int32(nsec)))
+		return nil
+	case "Value":
+		switch {
+		case string(in) == "null":
+			m.Set(fds.ByNumber(1), protoreflect.ValueOfEnum(0))
+		case string(in) == "true":
+			m.Set(fds.ByNumber(4), protoreflect.ValueOfBool(true))
+		case string(in) == "false":
+			m.Set(fds.ByNumber(4), protoreflect.ValueOfBool(false))
+		case hasPrefixAndSuffix('"', in, '"'):
+			s, err := unquoteString(string(in))
+			if err != nil {
+				return fmt.Errorf("unrecognized type for Value %q", in)
+			}
+			m.Set(fds.ByNumber(3), protoreflect.ValueOfString(s))
+		case hasPrefixAndSuffix('[', in, ']'):
+			v := m.Mutable(fds.ByNumber(6))
+			return u.unmarshalMessage(v.Message(), in)
+		case hasPrefixAndSuffix('{', in, '}'):
+			v := m.Mutable(fds.ByNumber(5))
+			return u.unmarshalMessage(v.Message(), in)
+		default:
+			f, err := strconv.ParseFloat(string(in), 0)
+			if err != nil {
+				return fmt.Errorf("unrecognized type for Value %q", in)
+			}
+			m.Set(fds.ByNumber(2), protoreflect.ValueOfFloat64(f))
+		}
+		return nil
+	case "ListValue":
+		var jsonArray []json.RawMessage
+		if err := json.Unmarshal(in, &jsonArray); err != nil {
+			return fmt.Errorf("bad ListValue: %v", err)
+		}
+
+		lv := m.Mutable(fds.ByNumber(1)).List()
+		for _, raw := range jsonArray {
+			ve := lv.NewElement()
+			if err := u.unmarshalMessage(ve.Message(), raw); err != nil {
+				return err
+			}
+			lv.Append(ve)
+		}
+		return nil
+	case "Struct":
+		var jsonObject map[string]json.RawMessage
+		if err := json.Unmarshal(in, &jsonObject); err != nil {
+			return fmt.Errorf("bad StructValue: %v", err)
+		}
+
+		mv := m.Mutable(fds.ByNumber(1)).Map()
+		for key, raw := range jsonObject {
+			kv := protoreflect.ValueOf(key).MapKey()
+			vv := mv.NewValue()
+			if err := u.unmarshalMessage(vv.Message(), raw); err != nil {
+				return fmt.Errorf("bad value in StructValue for key %q: %v", key, err)
+			}
+			mv.Set(kv, vv)
+		}
+		return nil
+	}
+
+	var jsonObject map[string]json.RawMessage
+	if err := json.Unmarshal(in, &jsonObject); err != nil {
+		return err
+	}
+
+	// Handle known fields.
+	for i := 0; i < fds.Len(); i++ {
+		fd := fds.Get(i)
+		if fd.IsWeak() && fd.Message().IsPlaceholder() {
+			continue //  weak reference is not linked in
+		}
+
+		// Search for any raw JSON value associated with this field.
+		var raw json.RawMessage
+		name := string(fd.Name())
+		if fd.Kind() == protoreflect.GroupKind {
+			name = string(fd.Message().Name())
+		}
+		if v, ok := jsonObject[name]; ok {
+			delete(jsonObject, name)
+			raw = v
+		}
+		name = string(fd.JSONName())
+		if v, ok := jsonObject[name]; ok {
+			delete(jsonObject, name)
+			raw = v
+		}
+
+		field := m.NewField(fd)
+		// Unmarshal the field value.
+		if raw == nil || (string(raw) == "null" && !isSingularWellKnownValue(fd) && !isSingularJSONPBUnmarshaler(field, fd)) {
+			continue
+		}
+		v, err := u.unmarshalValue(field, raw, fd)
+		if err != nil {
+			return err
+		}
+		m.Set(fd, v)
+	}
+
+	// Handle extension fields.
+	for name, raw := range jsonObject {
+		if !strings.HasPrefix(name, "[") || !strings.HasSuffix(name, "]") {
+			continue
+		}
+
+		// Resolve the extension field by name.
+		xname := protoreflect.FullName(name[len("[") : len(name)-len("]")])
+		xt, _ := protoregistry.GlobalTypes.FindExtensionByName(xname)
+		if xt == nil && isMessageSet(md) {
+			xt, _ = protoregistry.GlobalTypes.FindExtensionByName(xname.Append("message_set_extension"))
+		}
+		if xt == nil {
+			continue
+		}
+		delete(jsonObject, name)
+		fd := xt.TypeDescriptor()
+		if fd.ContainingMessage().FullName() != m.Descriptor().FullName() {
+			return fmt.Errorf("extension field %q does not extend message %q", xname, m.Descriptor().FullName())
+		}
+
+		field := m.NewField(fd)
+		// Unmarshal the field value.
+		if raw == nil || (string(raw) == "null" && !isSingularWellKnownValue(fd) && !isSingularJSONPBUnmarshaler(field, fd)) {
+			continue
+		}
+		v, err := u.unmarshalValue(field, raw, fd)
+		if err != nil {
+			return err
+		}
+		m.Set(fd, v)
+	}
+
+	if !u.AllowUnknownFields && len(jsonObject) > 0 {
+		for name := range jsonObject {
+			return fmt.Errorf("unknown field %q in %v", name, md.FullName())
+		}
+	}
+	return nil
+}
+
+func isSingularWellKnownValue(fd protoreflect.FieldDescriptor) bool {
+	if md := fd.Message(); md != nil {
+		return md.FullName() == "google.protobuf.Value" && fd.Cardinality() != protoreflect.Repeated
+	}
+	return false
+}
+
+func isSingularJSONPBUnmarshaler(v protoreflect.Value, fd protoreflect.FieldDescriptor) bool {
+	if fd.Message() != nil && fd.Cardinality() != protoreflect.Repeated {
+		_, ok := proto.MessageV1(v.Interface()).(JSONPBUnmarshaler)
+		return ok
+	}
+	return false
+}
+
+func (u *Unmarshaler) unmarshalValue(v protoreflect.Value, in []byte, fd protoreflect.FieldDescriptor) (protoreflect.Value, error) {
+	switch {
+	case fd.IsList():
+		var jsonArray []json.RawMessage
+		if err := json.Unmarshal(in, &jsonArray); err != nil {
+			return v, err
+		}
+		lv := v.List()
+		for _, raw := range jsonArray {
+			ve, err := u.unmarshalSingularValue(lv.NewElement(), raw, fd)
+			if err != nil {
+				return v, err
+			}
+			lv.Append(ve)
+		}
+		return v, nil
+	case fd.IsMap():
+		var jsonObject map[string]json.RawMessage
+		if err := json.Unmarshal(in, &jsonObject); err != nil {
+			return v, err
+		}
+		kfd := fd.MapKey()
+		vfd := fd.MapValue()
+		mv := v.Map()
+		for key, raw := range jsonObject {
+			var kv protoreflect.MapKey
+			if kfd.Kind() == protoreflect.StringKind {
+				kv = protoreflect.ValueOf(key).MapKey()
+			} else {
+				v, err := u.unmarshalSingularValue(kfd.Default(), []byte(key), kfd)
+				if err != nil {
+					return v, err
+				}
+				kv = v.MapKey()
+			}
+
+			vv, err := u.unmarshalSingularValue(mv.NewValue(), raw, vfd)
+			if err != nil {
+				return v, err
+			}
+			mv.Set(kv, vv)
+		}
+		return v, nil
+	default:
+		return u.unmarshalSingularValue(v, in, fd)
+	}
+}
+
+var nonFinite = map[string]float64{
+	`"NaN"`:       math.NaN(),
+	`"Infinity"`:  math.Inf(+1),
+	`"-Infinity"`: math.Inf(-1),
+}
+
+func (u *Unmarshaler) unmarshalSingularValue(v protoreflect.Value, in []byte, fd protoreflect.FieldDescriptor) (protoreflect.Value, error) {
+	switch fd.Kind() {
+	case protoreflect.BoolKind:
+		return unmarshalValue(in, new(bool))
+	case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind:
+		return unmarshalValue(trimQuote(in), new(int32))
+	case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind:
+		return unmarshalValue(trimQuote(in), new(int64))
+	case protoreflect.Uint32Kind, protoreflect.Fixed32Kind:
+		return unmarshalValue(trimQuote(in), new(uint32))
+	case protoreflect.Uint64Kind, protoreflect.Fixed64Kind:
+		return unmarshalValue(trimQuote(in), new(uint64))
+	case protoreflect.FloatKind:
+		if f, ok := nonFinite[string(in)]; ok {
+			return protoreflect.ValueOfFloat32(float32(f)), nil
+		}
+		return unmarshalValue(trimQuote(in), new(float32))
+	case protoreflect.DoubleKind:
+		if f, ok := nonFinite[string(in)]; ok {
+			return protoreflect.ValueOfFloat64(float64(f)), nil
+		}
+		return unmarshalValue(trimQuote(in), new(float64))
+	case protoreflect.StringKind:
+		return unmarshalValue(in, new(string))
+	case protoreflect.BytesKind:
+		return unmarshalValue(in, new([]byte))
+	case protoreflect.EnumKind:
+		if hasPrefixAndSuffix('"', in, '"') {
+			vd := fd.Enum().Values().ByName(protoreflect.Name(trimQuote(in)))
+			if vd == nil {
+				return v, fmt.Errorf("unknown value %q for enum %s", in, fd.Enum().FullName())
+			}
+			return protoreflect.ValueOfEnum(vd.Number()), nil
+		}
+		return unmarshalValue(in, new(protoreflect.EnumNumber))
+	case protoreflect.MessageKind, protoreflect.GroupKind:
+		err := u.unmarshalMessage(v.Message(), in)
+		return v, err
+	default:
+		panic(fmt.Sprintf("invalid kind %v", fd.Kind()))
+	}
+}
+
+func unmarshalValue(in []byte, v interface{}) (protoreflect.Value, error) {
+	err := json.Unmarshal(in, v)
+	return protoreflect.ValueOf(reflect.ValueOf(v).Elem().Interface()), err
+}
+
+func unquoteString(in string) (out string, err error) {
+	err = json.Unmarshal([]byte(in), &out)
+	return out, err
+}
+
+func hasPrefixAndSuffix(prefix byte, in []byte, suffix byte) bool {
+	if len(in) >= 2 && in[0] == prefix && in[len(in)-1] == suffix {
+		return true
+	}
+	return false
+}
+
+// trimQuote is like unquoteString but simply strips surrounding quotes.
+// This is incorrect, but is behavior done by the legacy implementation.
+func trimQuote(in []byte) []byte {
+	if len(in) >= 2 && in[0] == '"' && in[len(in)-1] == '"' {
+		in = in[1 : len(in)-1]
+	}
+	return in
+}

vendor/github.com/golang/protobuf/jsonpb/encode.go

@@ -0,0 +1,559 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package jsonpb
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"math"
+	"reflect"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/golang/protobuf/proto"
+	"google.golang.org/protobuf/encoding/protojson"
+	protoV2 "google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+)
+
+const wrapJSONMarshalV2 = false
+
+// Marshaler is a configurable object for marshaling protocol buffer messages
+// to the specified JSON representation.
+type Marshaler struct {
+	// OrigName specifies whether to use the original protobuf name for fields.
+	OrigName bool
+
+	// EnumsAsInts specifies whether to render enum values as integers,
+	// as opposed to string values.
+	EnumsAsInts bool
+
+	// EmitDefaults specifies whether to render fields with zero values.
+	EmitDefaults bool
+
+	// Indent controls whether the output is compact or not.
+	// If empty, the output is compact JSON. Otherwise, every JSON object
+	// entry and JSON array value will be on its own line.
+	// Each line will be preceded by repeated copies of Indent, where the
+	// number of copies is the current indentation depth.
+	Indent string
+
+	// AnyResolver is used to resolve the google.protobuf.Any well-known type.
+	// If unset, the global registry is used by default.
+	AnyResolver AnyResolver
+}
+
+// JSONPBMarshaler is implemented by protobuf messages that customize the
+// way they are marshaled to JSON. Messages that implement this should also
+// implement JSONPBUnmarshaler so that the custom format can be parsed.
+//
+// The JSON marshaling must follow the proto to JSON specification:
+//	https://developers.google.com/protocol-buffers/docs/proto3#json
+//
+// Deprecated: Custom types should implement protobuf reflection instead.
+type JSONPBMarshaler interface {
+	MarshalJSONPB(*Marshaler) ([]byte, error)
+}
+
+// Marshal serializes a protobuf message as JSON into w.
+func (jm *Marshaler) Marshal(w io.Writer, m proto.Message) error {
+	b, err := jm.marshal(m)
+	if len(b) > 0 {
+		if _, err := w.Write(b); err != nil {
+			return err
+		}
+	}
+	return err
+}
+
+// MarshalToString serializes a protobuf message as JSON in string form.
+func (jm *Marshaler) MarshalToString(m proto.Message) (string, error) {
+	b, err := jm.marshal(m)
+	if err != nil {
+		return "", err
+	}
+	return string(b), nil
+}
+
+func (jm *Marshaler) marshal(m proto.Message) ([]byte, error) {
+	v := reflect.ValueOf(m)
+	if m == nil || (v.Kind() == reflect.Ptr && v.IsNil()) {
+		return nil, errors.New("Marshal called with nil")
+	}
+
+	// Check for custom marshalers first since they may not properly
+	// implement protobuf reflection that the logic below relies on.
+	if jsm, ok := m.(JSONPBMarshaler); ok {
+		return jsm.MarshalJSONPB(jm)
+	}
+
+	if wrapJSONMarshalV2 {
+		opts := protojson.MarshalOptions{
+			UseProtoNames:   jm.OrigName,
+			UseEnumNumbers:  jm.EnumsAsInts,
+			EmitUnpopulated: jm.EmitDefaults,
+			Indent:          jm.Indent,
+		}
+		if jm.AnyResolver != nil {
+			opts.Resolver = anyResolver{jm.AnyResolver}
+		}
+		return opts.Marshal(proto.MessageReflect(m).Interface())
+	} else {
+		// Check for unpopulated required fields first.
+		m2 := proto.MessageReflect(m)
+		if err := protoV2.CheckInitialized(m2.Interface()); err != nil {
+			return nil, err
+		}
+
+		w := jsonWriter{Marshaler: jm}
+		err := w.marshalMessage(m2, "", "")
+		return w.buf, err
+	}
+}
+
+type jsonWriter struct {
+	*Marshaler
+	buf []byte
+}
+
+func (w *jsonWriter) write(s string) {
+	w.buf = append(w.buf, s...)
+}
+
+func (w *jsonWriter) marshalMessage(m protoreflect.Message, indent, typeURL string) error {
+	if jsm, ok := proto.MessageV1(m.Interface()).(JSONPBMarshaler); ok {
+		b, err := jsm.MarshalJSONPB(w.Marshaler)
+		if err != nil {
+			return err
+		}
+		if typeURL != "" {
+			// we are marshaling this object to an Any type
+			var js map[string]*json.RawMessage
+			if err = json.Unmarshal(b, &js); err != nil {
+				return fmt.Errorf("type %T produced invalid JSON: %v", m.Interface(), err)
+			}
+			turl, err := json.Marshal(typeURL)
+			if err != nil {
+				return fmt.Errorf("failed to marshal type URL %q to JSON: %v", typeURL, err)
+			}
+			js["@type"] = (*json.RawMessage)(&turl)
+			if b, err = json.Marshal(js); err != nil {
+				return err
+			}
+		}
+		w.write(string(b))
+		return nil
+	}
+
+	md := m.Descriptor()
+	fds := md.Fields()
+
+	// Handle well-known types.
+	const secondInNanos = int64(time.Second / time.Nanosecond)
+	switch wellKnownType(md.FullName()) {
+	case "Any":
+		return w.marshalAny(m, indent)
+	case "BoolValue", "BytesValue", "StringValue",
+		"Int32Value", "UInt32Value", "FloatValue",
+		"Int64Value", "UInt64Value", "DoubleValue":
+		fd := fds.ByNumber(1)
+		return w.marshalValue(fd, m.Get(fd), indent)
+	case "Duration":
+		const maxSecondsInDuration = 315576000000
+		// "Generated output always contains 0, 3, 6, or 9 fractional digits,
+		//  depending on required precision."
+		s := m.Get(fds.ByNumber(1)).Int()
+		ns := m.Get(fds.ByNumber(2)).Int()
+		if s < -maxSecondsInDuration || s > maxSecondsInDuration {
+			return fmt.Errorf("seconds out of range %v", s)
+		}
+		if ns <= -secondInNanos || ns >= secondInNanos {
+			return fmt.Errorf("ns out of range (%v, %v)", -secondInNanos, secondInNanos)
+		}
+		if (s > 0 && ns < 0) || (s < 0 && ns > 0) {
+			return errors.New("signs of seconds and nanos do not match")
+		}
+		var sign string
+		if s < 0 || ns < 0 {
+			sign, s, ns = "-", -1*s, -1*ns
+		}
+		x := fmt.Sprintf("%s%d.%09d", sign, s, ns)
+		x = strings.TrimSuffix(x, "000")
+		x = strings.TrimSuffix(x, "000")
+		x = strings.TrimSuffix(x, ".000")
+		w.write(fmt.Sprintf(`"%vs"`, x))
+		return nil
+	case "Timestamp":
+		// "RFC 3339, where generated output will always be Z-normalized
+		//  and uses 0, 3, 6 or 9 fractional digits."
+		s := m.Get(fds.ByNumber(1)).Int()
+		ns := m.Get(fds.ByNumber(2)).Int()
+		if ns < 0 || ns >= secondInNanos {
+			return fmt.Errorf("ns out of range [0, %v)", secondInNanos)
+		}
+		t := time.Unix(s, ns).UTC()
+		// time.RFC3339Nano isn't exactly right (we need to get 3/6/9 fractional digits).
+		x := t.Format("2006-01-02T15:04:05.000000000")
+		x = strings.TrimSuffix(x, "000")
+		x = strings.TrimSuffix(x, "000")
+		x = strings.TrimSuffix(x, ".000")
+		w.write(fmt.Sprintf(`"%vZ"`, x))
+		return nil
+	case "Value":
+		// JSON value; which is a null, number, string, bool, object, or array.
+		od := md.Oneofs().Get(0)
+		fd := m.WhichOneof(od)
+		if fd == nil {
+			return errors.New("nil Value")
+		}
+		return w.marshalValue(fd, m.Get(fd), indent)
+	case "Struct", "ListValue":
+		// JSON object or array.
+		fd := fds.ByNumber(1)
+		return w.marshalValue(fd, m.Get(fd), indent)
+	}
+
+	w.write("{")
+	if w.Indent != "" {
+		w.write("\n")
+	}
+
+	firstField := true
+	if typeURL != "" {
+		if err := w.marshalTypeURL(indent, typeURL); err != nil {
+			return err
+		}
+		firstField = false
+	}
+
+	for i := 0; i < fds.Len(); {
+		fd := fds.Get(i)
+		if od := fd.ContainingOneof(); od != nil {
+			fd = m.WhichOneof(od)
+			i += od.Fields().Len()
+			if fd == nil {
+				continue
+			}
+		} else {
+			i++
+		}
+
+		v := m.Get(fd)
+
+		if !m.Has(fd) {
+			if !w.EmitDefaults || fd.ContainingOneof() != nil {
+				continue
+			}
+			if fd.Cardinality() != protoreflect.Repeated && (fd.Message() != nil || fd.Syntax() == protoreflect.Proto2) {
+				v = protoreflect.Value{} // use "null" for singular messages or proto2 scalars
+			}
+		}
+
+		if !firstField {
+			w.writeComma()
+		}
+		if err := w.marshalField(fd, v, indent); err != nil {
+			return err
+		}
+		firstField = false
+	}
+
+	// Handle proto2 extensions.
+	if md.ExtensionRanges().Len() > 0 {
+		// Collect a sorted list of all extension descriptor and values.
+		type ext struct {
+			desc protoreflect.FieldDescriptor
+			val  protoreflect.Value
+		}
+		var exts []ext
+		m.Range(func(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool {
+			if fd.IsExtension() {
+				exts = append(exts, ext{fd, v})
+			}
+			return true
+		})
+		sort.Slice(exts, func(i, j int) bool {
+			return exts[i].desc.Number() < exts[j].desc.Number()
+		})
+
+		for _, ext := range exts {
+			if !firstField {
+				w.writeComma()
+			}
+			if err := w.marshalField(ext.desc, ext.val, indent); err != nil {
+				return err
+			}
+			firstField = false
+		}
+	}
+
+	if w.Indent != "" {
+		w.write("\n")
+		w.write(indent)
+	}
+	w.write("}")
+	return nil
+}
+
+func (w *jsonWriter) writeComma() {
+	if w.Indent != "" {
+		w.write(",\n")
+	} else {
+		w.write(",")
+	}
+}
+
+func (w *jsonWriter) marshalAny(m protoreflect.Message, indent string) error {
+	// "If the Any contains a value that has a special JSON mapping,
+	//  it will be converted as follows: {"@type": xxx, "value": yyy}.
+	//  Otherwise, the value will be converted into a JSON object,
+	//  and the "@type" field will be inserted to indicate the actual data type."
+	md := m.Descriptor()
+	typeURL := m.Get(md.Fields().ByNumber(1)).String()
+	rawVal := m.Get(md.Fields().ByNumber(2)).Bytes()
+
+	var m2 protoreflect.Message
+	if w.AnyResolver != nil {
+		mi, err := w.AnyResolver.Resolve(typeURL)
+		if err != nil {
+			return err
+		}
+		m2 = proto.MessageReflect(mi)
+	} else {
+		mt, err := protoregistry.GlobalTypes.FindMessageByURL(typeURL)
+		if err != nil {
+			return err
+		}
+		m2 = mt.New()
+	}
+
+	if err := protoV2.Unmarshal(rawVal, m2.Interface()); err != nil {
+		return err
+	}
+
+	if wellKnownType(m2.Descriptor().FullName()) == "" {
+		return w.marshalMessage(m2, indent, typeURL)
+	}
+
+	w.write("{")
+	if w.Indent != "" {
+		w.write("\n")
+	}
+	if err := w.marshalTypeURL(indent, typeURL); err != nil {
+		return err
+	}
+	w.writeComma()
+	if w.Indent != "" {
+		w.write(indent)
+		w.write(w.Indent)
+		w.write(`"value": `)
+	} else {
+		w.write(`"value":`)
+	}
+	if err := w.marshalMessage(m2, indent+w.Indent, ""); err != nil {
+		return err
+	}
+	if w.Indent != "" {
+		w.write("\n")
+		w.write(indent)
+	}
+	w.write("}")
+	return nil
+}
+
+func (w *jsonWriter) marshalTypeURL(indent, typeURL string) error {
+	if w.Indent != "" {
+		w.write(indent)
+		w.write(w.Indent)
+	}
+	w.write(`"@type":`)
+	if w.Indent != "" {
+		w.write(" ")
+	}
+	b, err := json.Marshal(typeURL)
+	if err != nil {
+		return err
+	}
+	w.write(string(b))
+	return nil
+}
+
+// marshalField writes field description and value to the Writer.
+func (w *jsonWriter) marshalField(fd protoreflect.FieldDescriptor, v protoreflect.Value, indent string) error {
+	if w.Indent != "" {
+		w.write(indent)
+		w.write(w.Indent)
+	}
+	w.write(`"`)
+	switch {
+	case fd.IsExtension():
+		// For message set, use the fname of the message as the extension name.
+		name := string(fd.FullName())
+		if isMessageSet(fd.ContainingMessage()) {
+			name = strings.TrimSuffix(name, ".message_set_extension")
+		}
+
+		w.write("[" + name + "]")
+	case w.OrigName:
+		name := string(fd.Name())
+		if fd.Kind() == protoreflect.GroupKind {
+			name = string(fd.Message().Name())
+		}
+		w.write(name)
+	default:
+		w.write(string(fd.JSONName()))
+	}
+	w.write(`":`)
+	if w.Indent != "" {
+		w.write(" ")
+	}
+	return w.marshalValue(fd, v, indent)
+}
+
+func (w *jsonWriter) marshalValue(fd protoreflect.FieldDescriptor, v protoreflect.Value, indent string) error {
+	switch {
+	case fd.IsList():
+		w.write("[")
+		comma := ""
+		lv := v.List()
+		for i := 0; i < lv.Len(); i++ {
+			w.write(comma)
+			if w.Indent != "" {
+				w.write("\n")
+				w.write(indent)
+				w.write(w.Indent)
+				w.write(w.Indent)
+			}
+			if err := w.marshalSingularValue(fd, lv.Get(i), indent+w.Indent); err != nil {
+				return err
+			}
+			comma = ","
+		}
+		if w.Indent != "" {
+			w.write("\n")
+			w.write(indent)
+			w.write(w.Indent)
+		}
+		w.write("]")
+		return nil
+	case fd.IsMap():
+		kfd := fd.MapKey()
+		vfd := fd.MapValue()
+		mv := v.Map()
+
+		// Collect a sorted list of all map keys and values.
+		type entry struct{ key, val protoreflect.Value }
+		var entries []entry
+		mv.Range(func(k protoreflect.MapKey, v protoreflect.Value) bool {
+			entries = append(entries, entry{k.Value(), v})
+			return true
+		})
+		sort.Slice(entries, func(i, j int) bool {
+			switch kfd.Kind() {
+			case protoreflect.BoolKind:
+				return !entries[i].key.Bool() && entries[j].key.Bool()
+			case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind, protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind:
+				return entries[i].key.Int() < entries[j].key.Int()
+			case protoreflect.Uint32Kind, protoreflect.Fixed32Kind, protoreflect.Uint64Kind, protoreflect.Fixed64Kind:
+				return entries[i].key.Uint() < entries[j].key.Uint()
+			case protoreflect.StringKind:
+				return entries[i].key.String() < entries[j].key.String()
+			default:
+				panic("invalid kind")
+			}
+		})
+
+		w.write(`{`)
+		comma := ""
+		for _, entry := range entries {
+			w.write(comma)
+			if w.Indent != "" {
+				w.write("\n")
+				w.write(indent)
+				w.write(w.Indent)
+				w.write(w.Indent)
+			}
+
+			s := fmt.Sprint(entry.key.Interface())
+			b, err := json.Marshal(s)
+			if err != nil {
+				return err
+			}
+			w.write(string(b))
+
+			w.write(`:`)
+			if w.Indent != "" {
+				w.write(` `)
+			}
+
+			if err := w.marshalSingularValue(vfd, entry.val, indent+w.Indent); err != nil {
+				return err
+			}
+			comma = ","
+		}
+		if w.Indent != "" {
+			w.write("\n")
+			w.write(indent)
+			w.write(w.Indent)
+		}
+		w.write(`}`)
+		return nil
+	default:
+		return w.marshalSingularValue(fd, v, indent)
+	}
+}
+
+func (w *jsonWriter) marshalSingularValue(fd protoreflect.FieldDescriptor, v protoreflect.Value, indent string) error {
+	switch {
+	case !v.IsValid():
+		w.write("null")
+		return nil
+	case fd.Message() != nil:
+		return w.marshalMessage(v.Message(), indent+w.Indent, "")
+	case fd.Enum() != nil:
+		if fd.Enum().FullName() == "google.protobuf.NullValue" {
+			w.write("null")
+			return nil
+		}
+
+		vd := fd.Enum().Values().ByNumber(v.Enum())
+		if vd == nil || w.EnumsAsInts {
+			w.write(strconv.Itoa(int(v.Enum())))
+		} else {
+			w.write(`"` + string(vd.Name()) + `"`)
+		}
+		return nil
+	default:
+		switch v.Interface().(type) {
+		case float32, float64:
+			switch {
+			case math.IsInf(v.Float(), +1):
+				w.write(`"Infinity"`)
+				return nil
+			case math.IsInf(v.Float(), -1):
+				w.write(`"-Infinity"`)
+				return nil
+			case math.IsNaN(v.Float()):
+				w.write(`"NaN"`)
+				return nil
+			}
+		case int64, uint64:
+			w.write(fmt.Sprintf(`"%d"`, v.Interface()))
+			return nil
+		}
+
+		b, err := json.Marshal(v.Interface())
+		if err != nil {
+			return err
+		}
+		w.write(string(b))
+		return nil
+	}
+}

vendor/github.com/golang/protobuf/jsonpb/json.go

@@ -0,0 +1,69 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package jsonpb provides functionality to marshal and unmarshal between a
+// protocol buffer message and JSON. It follows the specification at
+// https://developers.google.com/protocol-buffers/docs/proto3#json.
+//
+// Do not rely on the default behavior of the standard encoding/json package
+// when called on generated message types as it does not operate correctly.
+//
+// Deprecated: Use the "google.golang.org/protobuf/encoding/protojson"
+// package instead.
+package jsonpb
+
+import (
+	"github.com/golang/protobuf/proto"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+	"google.golang.org/protobuf/runtime/protoimpl"
+)
+
+// AnyResolver takes a type URL, present in an Any message,
+// and resolves it into an instance of the associated message.
+type AnyResolver interface {
+	Resolve(typeURL string) (proto.Message, error)
+}
+
+type anyResolver struct{ AnyResolver }
+
+func (r anyResolver) FindMessageByName(message protoreflect.FullName) (protoreflect.MessageType, error) {
+	return r.FindMessageByURL(string(message))
+}
+
+func (r anyResolver) FindMessageByURL(url string) (protoreflect.MessageType, error) {
+	m, err := r.Resolve(url)
+	if err != nil {
+		return nil, err
+	}
+	return protoimpl.X.MessageTypeOf(m), nil
+}
+
+func (r anyResolver) FindExtensionByName(field protoreflect.FullName) (protoreflect.ExtensionType, error) {
+	return protoregistry.GlobalTypes.FindExtensionByName(field)
+}
+
+func (r anyResolver) FindExtensionByNumber(message protoreflect.FullName, field protoreflect.FieldNumber) (protoreflect.ExtensionType, error) {
+	return protoregistry.GlobalTypes.FindExtensionByNumber(message, field)
+}
+
+func wellKnownType(s protoreflect.FullName) string {
+	if s.Parent() == "google.protobuf" {
+		switch s.Name() {
+		case "Empty", "Any",
+			"BoolValue", "BytesValue", "StringValue",
+			"Int32Value", "UInt32Value", "FloatValue",
+			"Int64Value", "UInt64Value", "DoubleValue",
+			"Duration", "Timestamp",
+			"NullValue", "Struct", "Value", "ListValue":
+			return string(s.Name())
+		}
+	}
+	return ""
+}
+
+func isMessageSet(md protoreflect.MessageDescriptor) bool {
+	ms, ok := md.(interface{ IsMessageSet() bool })
+	return ok && ms.IsMessageSet()
+}

vendor/golang.org/x/net/AUTHORS

@@ -1,3 +0,0 @@
-# This source code refers to The Go Authors for copyright purposes.
-# The master list of authors is in the main Go distribution,
-# visible at http://tip.golang.org/AUTHORS.

vendor/golang.org/x/net/CONTRIBUTORS

@@ -1,3 +0,0 @@
-# This source code was written by the Go contributors.
-# The master list of contributors is in the main Go distribution,
-# visible at http://tip.golang.org/CONTRIBUTORS.

vendor/golang.org/x/net/context/context.go

@@ -21,9 +21,9 @@
 // explicitly to each function that needs it. The Context should be the first
 // parameter, typically named ctx:
 //
-// 	func DoSomething(ctx context.Context, arg Arg) error {
+//	func DoSomething(ctx context.Context, arg Arg) error {
-// 		// ... use ctx ...
+//		// ... use ctx ...
-// 	}
+//	}
 //
 // Do not pass a nil Context, even if a function permits it. Pass context.TODO
 // if you are unsure about which Context to use.

vendor/golang.org/x/net/context/go17.go

@@ -54,11 +54,11 @@ func WithDeadline(parent Context, deadline time.Time) (Context, CancelFunc) {
 // Canceling this context releases resources associated with it, so code should
 // call cancel as soon as the operations running in this Context complete:
 //
-// 	func slowOperationWithTimeout(ctx context.Context) (Result, error) {
+//	func slowOperationWithTimeout(ctx context.Context) (Result, error) {
-// 		ctx, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
+//		ctx, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
-// 		defer cancel()  // releases resources if slowOperation completes before timeout elapses
+//		defer cancel()  // releases resources if slowOperation completes before timeout elapses
-// 		return slowOperation(ctx)
+//		return slowOperation(ctx)
-// 	}
+//	}
 func WithTimeout(parent Context, timeout time.Duration) (Context, CancelFunc) {
 	return WithDeadline(parent, time.Now().Add(timeout))
 }

vendor/golang.org/x/net/context/pre_go17.go

@@ -264,11 +264,11 @@ func (c *timerCtx) cancel(removeFromParent bool, err error) {
 // Canceling this context releases resources associated with it, so code should
 // call cancel as soon as the operations running in this Context complete:
 //
-// 	func slowOperationWithTimeout(ctx context.Context) (Result, error) {
+//	func slowOperationWithTimeout(ctx context.Context) (Result, error) {
-// 		ctx, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
+//		ctx, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
-// 		defer cancel()  // releases resources if slowOperation completes before timeout elapses
+//		defer cancel()  // releases resources if slowOperation completes before timeout elapses
-// 		return slowOperation(ctx)
+//		return slowOperation(ctx)
-// 	}
+//	}
 func WithTimeout(parent Context, timeout time.Duration) (Context, CancelFunc) {
 	return WithDeadline(parent, time.Now().Add(timeout))
 }

vendor/golang.org/x/net/http/httpguts/httplex.go

@@ -173,13 +173,15 @@ func tokenEqual(t1, t2 string) bool {
 
 // isLWS reports whether b is linear white space, according
 // to http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html#sec2.2
-//      LWS            = [CRLF] 1*( SP | HT )
+//
+//	LWS            = [CRLF] 1*( SP | HT )
 func isLWS(b byte) bool { return b == ' ' || b == '\t' }
 
 // isCTL reports whether b is a control byte, according
 // to http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html#sec2.2
-//      CTL            = <any US-ASCII control character
+//
-//                       (octets 0 - 31) and DEL (127)>
+//	CTL            = <any US-ASCII control character
+//	                 (octets 0 - 31) and DEL (127)>
 func isCTL(b byte) bool {
 	const del = 0x7f // a CTL
 	return b < ' ' || b == del
@@ -189,12 +191,13 @@ func isCTL(b byte) bool {
 // HTTP/2 imposes the additional restriction that uppercase ASCII
 // letters are not allowed.
 //
-//  RFC 7230 says:
+// RFC 7230 says:
-//   header-field   = field-name ":" OWS field-value OWS
+//
-//   field-name     = token
+//	header-field   = field-name ":" OWS field-value OWS
-//   token          = 1*tchar
+//	field-name     = token
-//   tchar = "!" / "#" / "$" / "%" / "&" / "'" / "*" / "+" / "-" / "." /
+//	token          = 1*tchar
-//           "^" / "_" / "`" / "|" / "~" / DIGIT / ALPHA
+//	tchar = "!" / "#" / "$" / "%" / "&" / "'" / "*" / "+" / "-" / "." /
+//	        "^" / "_" / "`" / "|" / "~" / DIGIT / ALPHA
 func ValidHeaderFieldName(v string) bool {
 	if len(v) == 0 {
 		return false
@@ -267,27 +270,28 @@ var validHostByte = [256]bool{
 // ValidHeaderFieldValue reports whether v is a valid "field-value" according to
 // http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2 :
 //
-//        message-header = field-name ":" [ field-value ]
+//	message-header = field-name ":" [ field-value ]
-//        field-value    = *( field-content | LWS )
+//	field-value    = *( field-content | LWS )
-//        field-content  = <the OCTETs making up the field-value
+//	field-content  = <the OCTETs making up the field-value
-//                         and consisting of either *TEXT or combinations
+//	                 and consisting of either *TEXT or combinations
-//                         of token, separators, and quoted-string>
+//	                 of token, separators, and quoted-string>
 //
 // http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html#sec2.2 :
 //
-//        TEXT           = <any OCTET except CTLs,
+//	TEXT           = <any OCTET except CTLs,
-//                          but including LWS>
+//	                  but including LWS>
-//        LWS            = [CRLF] 1*( SP | HT )
+//	LWS            = [CRLF] 1*( SP | HT )
-//        CTL            = <any US-ASCII control character
+//	CTL            = <any US-ASCII control character
-//                         (octets 0 - 31) and DEL (127)>
+//	                 (octets 0 - 31) and DEL (127)>
 //
 // RFC 7230 says:
-//  field-value    = *( field-content / obs-fold )
+//
-//  obj-fold       =  N/A to http2, and deprecated
+//	field-value    = *( field-content / obs-fold )
-//  field-content  = field-vchar [ 1*( SP / HTAB ) field-vchar ]
+//	obj-fold       =  N/A to http2, and deprecated
-//  field-vchar    = VCHAR / obs-text
+//	field-content  = field-vchar [ 1*( SP / HTAB ) field-vchar ]
-//  obs-text       = %x80-FF
+//	field-vchar    = VCHAR / obs-text
-//  VCHAR          = "any visible [USASCII] character"
+//	obs-text       = %x80-FF
+//	VCHAR          = "any visible [USASCII] character"
 //
 // http2 further says: "Similarly, HTTP/2 allows header field values
 // that are not valid. While most of the values that can be encoded

vendor/golang.org/x/net/http2/client_conn_pool.go

@@ -139,7 +139,6 @@ func (p *clientConnPool) getStartDialLocked(ctx context.Context, addr string) *d
 func (c *dialCall) dial(ctx context.Context, addr string) {
 	const singleUse = false // shared conn
 	c.res, c.err = c.p.t.dialClientConn(ctx, addr, singleUse)
-	close(c.done)
 
 	c.p.mu.Lock()
 	delete(c.p.dialing, addr)
@@ -147,6 +146,8 @@ func (c *dialCall) dial(ctx context.Context, addr string) {
 		c.p.addConnLocked(addr, c.res)
 	}
 	c.p.mu.Unlock()
+
+	close(c.done)
 }
 
 // addConnIfNeeded makes a NewClientConn out of c if a connection for key doesn't

vendor/golang.org/x/net/http2/errors.go

@@ -136,7 +136,7 @@ func (e headerFieldNameError) Error() string {
 type headerFieldValueError string
 
 func (e headerFieldValueError) Error() string {
-	return fmt.Sprintf("invalid header field value %q", string(e))
+	return fmt.Sprintf("invalid header field value for %q", string(e))
 }
 
 var (

vendor/golang.org/x/net/http2/frame.go

@@ -1532,7 +1532,8 @@ func (fr *Framer) readMetaFrame(hf *HeadersFrame) (*MetaHeadersFrame, error) {
 			fr.debugReadLoggerf("http2: decoded hpack field %+v", hf)
 		}
 		if !httpguts.ValidHeaderFieldValue(hf.Value) {
-			invalid = headerFieldValueError(hf.Value)
+			// Don't include the value in the error, because it may be sensitive.
+			invalid = headerFieldValueError(hf.Name)
 		}
 		isPseudo := strings.HasPrefix(hf.Name, ":")
 		if isPseudo {

vendor/golang.org/x/net/http2/hpack/huffman.go

@@ -169,25 +169,50 @@ func buildRootHuffmanNode() {
 // AppendHuffmanString appends s, as encoded in Huffman codes, to dst
 // and returns the extended buffer.
 func AppendHuffmanString(dst []byte, s string) []byte {
-	rembits := uint8(8)
+	// This relies on the maximum huffman code length being 30 (See tables.go huffmanCodeLen array)
-
+	// So if a uint64 buffer has less than 32 valid bits can always accommodate another huffmanCode.
+	var (
+		x uint64 // buffer
+		n uint   // number valid of bits present in x
+	)
 	for i := 0; i < len(s); i++ {
-		if rembits == 8 {
+		c := s[i]
-			dst = append(dst, 0)
+		n += uint(huffmanCodeLen[c])
+		x <<= huffmanCodeLen[c] % 64
+		x |= uint64(huffmanCodes[c])
+		if n >= 32 {
+			n %= 32             // Normally would be -= 32 but %= 32 informs compiler 0 <= n <= 31 for upcoming shift
+			y := uint32(x >> n) // Compiler doesn't combine memory writes if y isn't uint32
+			dst = append(dst, byte(y>>24), byte(y>>16), byte(y>>8), byte(y))
 		}
-		dst, rembits = appendByteToHuffmanCode(dst, rembits, s[i])
 	}
-
+	// Add padding bits if necessary
-	if rembits < 8 {
+	if over := n % 8; over > 0 {
-		// special EOS symbol
+		const (
-		code := uint32(0x3fffffff)
+			eosCode    = 0x3fffffff
-		nbits := uint8(30)
+			eosNBits   = 30
-
+			eosPadByte = eosCode >> (eosNBits - 8)
-		t := uint8(code >> (nbits - rembits))
+		)
-		dst[len(dst)-1] |= t
+		pad := 8 - over
+		x = (x << pad) | (eosPadByte >> over)
+		n += pad // 8 now divides into n exactly
 	}
-
+	// n in (0, 8, 16, 24, 32)
-	return dst
+	switch n / 8 {
+	case 0:
+		return dst
+	case 1:
+		return append(dst, byte(x))
+	case 2:
+		y := uint16(x)
+		return append(dst, byte(y>>8), byte(y))
+	case 3:
+		y := uint16(x >> 8)
+		return append(dst, byte(y>>8), byte(y), byte(x))
+	}
+	//	case 4:
+	y := uint32(x)
+	return append(dst, byte(y>>24), byte(y>>16), byte(y>>8), byte(y))
 }
 
 // HuffmanEncodeLength returns the number of bytes required to encode
@@ -199,35 +224,3 @@ func HuffmanEncodeLength(s string) uint64 {
 	}
 	return (n + 7) / 8
 }
-
-// appendByteToHuffmanCode appends Huffman code for c to dst and
-// returns the extended buffer and the remaining bits in the last
-// element. The appending is not byte aligned and the remaining bits
-// in the last element of dst is given in rembits.
-func appendByteToHuffmanCode(dst []byte, rembits uint8, c byte) ([]byte, uint8) {
-	code := huffmanCodes[c]
-	nbits := huffmanCodeLen[c]
-
-	for {
-		if rembits > nbits {
-			t := uint8(code << (rembits - nbits))
-			dst[len(dst)-1] |= t
-			rembits -= nbits
-			break
-		}
-
-		t := uint8(code >> (nbits - rembits))
-		dst[len(dst)-1] |= t
-
-		nbits -= rembits
-		rembits = 8
-
-		if nbits == 0 {
-			break
-		}
-
-		dst = append(dst, 0)
-	}
-
-	return dst, rembits
-}

vendor/golang.org/x/net/http2/http2.go

@@ -13,7 +13,6 @@
 // See https://http2.github.io/ for more information on HTTP/2.
 //
 // See https://http2.golang.org/ for a test server running this code.
-//
 package http2 // import "golang.org/x/net/http2"
 
 import (
@@ -176,10 +175,11 @@ func (s SettingID) String() string {
 // name (key). See httpguts.ValidHeaderName for the base rules.
 //
 // Further, http2 says:
-//   "Just as in HTTP/1.x, header field names are strings of ASCII
+//
-//   characters that are compared in a case-insensitive
+//	"Just as in HTTP/1.x, header field names are strings of ASCII
-//   fashion. However, header field names MUST be converted to
+//	characters that are compared in a case-insensitive
-//   lowercase prior to their encoding in HTTP/2. "
+//	fashion. However, header field names MUST be converted to
+//	lowercase prior to their encoding in HTTP/2. "
 func validWireHeaderFieldName(v string) bool {
 	if len(v) == 0 {
 		return false
@@ -365,8 +365,8 @@ func (s *sorter) SortStrings(ss []string) {
 // validPseudoPath reports whether v is a valid :path pseudo-header
 // value. It must be either:
 //
-//     *) a non-empty string starting with '/'
+//   - a non-empty string starting with '/'
-//     *) the string '*', for OPTIONS requests.
+//   - the string '*', for OPTIONS requests.
 //
 // For now this is only used a quick check for deciding when to clean
 // up Opaque URLs before sending requests from the Transport.

vendor/golang.org/x/net/http2/server.go

@@ -315,6 +315,20 @@ type ServeConnOpts struct {
 	// requests. If nil, BaseConfig.Handler is used. If BaseConfig
 	// or BaseConfig.Handler is nil, http.DefaultServeMux is used.
 	Handler http.Handler
+
+	// UpgradeRequest is an initial request received on a connection
+	// undergoing an h2c upgrade. The request body must have been
+	// completely read from the connection before calling ServeConn,
+	// and the 101 Switching Protocols response written.
+	UpgradeRequest *http.Request
+
+	// Settings is the decoded contents of the HTTP2-Settings header
+	// in an h2c upgrade request.
+	Settings []byte
+
+	// SawClientPreface is set if the HTTP/2 connection preface
+	// has already been read from the connection.
+	SawClientPreface bool
 }
 
 func (o *ServeConnOpts) context() context.Context {
@@ -383,6 +397,7 @@ func (s *Server) ServeConn(c net.Conn, opts *ServeConnOpts) {
 		headerTableSize:             initialHeaderTableSize,
 		serveG:                      newGoroutineLock(),
 		pushEnabled:                 true,
+		sawClientPreface:            opts.SawClientPreface,
 	}
 
 	s.state.registerConn(sc)
@@ -400,7 +415,7 @@ func (s *Server) ServeConn(c net.Conn, opts *ServeConnOpts) {
 	if s.NewWriteScheduler != nil {
 		sc.writeSched = s.NewWriteScheduler()
 	} else {
-		sc.writeSched = NewRandomWriteScheduler()
+		sc.writeSched = NewPriorityWriteScheduler(nil)
 	}
 
 	// These start at the RFC-specified defaults. If there is a higher
@@ -465,9 +480,27 @@ func (s *Server) ServeConn(c net.Conn, opts *ServeConnOpts) {
 		}
 	}
 
+	if opts.Settings != nil {
+		fr := &SettingsFrame{
+			FrameHeader: FrameHeader{valid: true},
+			p:           opts.Settings,
+		}
+		if err := fr.ForeachSetting(sc.processSetting); err != nil {
+			sc.rejectConn(ErrCodeProtocol, "invalid settings")
+			return
+		}
+		opts.Settings = nil
+	}
+
 	if hook := testHookGetServerConn; hook != nil {
 		hook(sc)
 	}
+
+	if opts.UpgradeRequest != nil {
+		sc.upgradeRequest(opts.UpgradeRequest)
+		opts.UpgradeRequest = nil
+	}
+
 	sc.serve()
 }
 
@@ -512,6 +545,7 @@ type serverConn struct {
 	// Everything following is owned by the serve loop; use serveG.check():
 	serveG                      goroutineLock // used to verify funcs are on serve()
 	pushEnabled                 bool
+	sawClientPreface            bool // preface has already been read, used in h2c upgrade
 	sawFirstSettings            bool // got the initial SETTINGS frame after the preface
 	needToSendSettingsAck       bool
 	unackedSettings             int    // how many SETTINGS have we sent without ACKs?
@@ -974,6 +1008,9 @@ var errPrefaceTimeout = errors.New("timeout waiting for client preface")
 // returns errPrefaceTimeout on timeout, or an error if the greeting
 // is invalid.
 func (sc *serverConn) readPreface() error {
+	if sc.sawClientPreface {
+		return nil
+	}
 	errc := make(chan error, 1)
 	go func() {
 		// Read the client preface
@@ -1915,6 +1952,26 @@ func (sc *serverConn) processHeaders(f *MetaHeadersFrame) error {
 	return nil
 }
 
+func (sc *serverConn) upgradeRequest(req *http.Request) {
+	sc.serveG.check()
+	id := uint32(1)
+	sc.maxClientStreamID = id
+	st := sc.newStream(id, 0, stateHalfClosedRemote)
+	st.reqTrailer = req.Trailer
+	if st.reqTrailer != nil {
+		st.trailer = make(http.Header)
+	}
+	rw := sc.newResponseWriter(st, req)
+
+	// Disable any read deadline set by the net/http package
+	// prior to the upgrade.
+	if sc.hs.ReadTimeout != 0 {
+		sc.conn.SetReadDeadline(time.Time{})
+	}
+
+	go sc.runHandler(rw, req, sc.handler.ServeHTTP)
+}
+
 func (st *stream) processTrailerHeaders(f *MetaHeadersFrame) error {
 	sc := st.sc
 	sc.serveG.check()
@@ -2145,6 +2202,11 @@ func (sc *serverConn) newWriterAndRequestNoBody(st *stream, rp requestParam) (*r
 	}
 	req = req.WithContext(st.ctx)
 
+	rw := sc.newResponseWriter(st, req)
+	return rw, req, nil
+}
+
+func (sc *serverConn) newResponseWriter(st *stream, req *http.Request) *responseWriter {
 	rws := responseWriterStatePool.Get().(*responseWriterState)
 	bwSave := rws.bw
 	*rws = responseWriterState{} // zero all the fields
@@ -2153,10 +2215,7 @@ func (sc *serverConn) newWriterAndRequestNoBody(st *stream, rp requestParam) (*r
 	rws.bw.Reset(chunkWriter{rws})
 	rws.stream = st
 	rws.req = req
-	rws.body = body
+	return &responseWriter{rws: rws}
-
-	rw := &responseWriter{rws: rws}
-	return rw, req, nil
 }
 
 // Run on its own goroutine.
@@ -2316,17 +2375,18 @@ type requestBody struct {
 	_             incomparable
 	stream        *stream
 	conn          *serverConn
-	closed        bool  // for use by Close only
+	closeOnce     sync.Once // for use by Close only
-	sawEOF        bool  // for use by Read only
+	sawEOF        bool      // for use by Read only
-	pipe          *pipe // non-nil if we have a HTTP entity message body
+	pipe          *pipe     // non-nil if we have a HTTP entity message body
-	needsContinue bool  // need to send a 100-continue
+	needsContinue bool      // need to send a 100-continue
 }
 
 func (b *requestBody) Close() error {
-	if b.pipe != nil && !b.closed {
+	b.closeOnce.Do(func() {
-		b.pipe.BreakWithError(errClosedBody)
+		if b.pipe != nil {
-	}
+			b.pipe.BreakWithError(errClosedBody)
-	b.closed = true
+		}
+	})
 	return nil
 }
 
@@ -2370,7 +2430,6 @@ type responseWriterState struct {
 	// immutable within a request:
 	stream *stream
 	req    *http.Request
-	body   *requestBody // to close at end of request, if DATA frames didn't
 	conn   *serverConn
 
 	// TODO: adjust buffer writing sizes based on server config, frame size updates from peer, etc
@@ -2546,8 +2605,9 @@ func (rws *responseWriterState) writeChunk(p []byte) (n int, err error) {
 // prior to the headers being written. If the set of trailers is fixed
 // or known before the header is written, the normal Go trailers mechanism
 // is preferred:
-//    https://golang.org/pkg/net/http/#ResponseWriter
+//
-//    https://golang.org/pkg/net/http/#example_ResponseWriter_trailers
+//	https://golang.org/pkg/net/http/#ResponseWriter
+//	https://golang.org/pkg/net/http/#example_ResponseWriter_trailers
 const TrailerPrefix = "Trailer:"
 
 // promoteUndeclaredTrailers permits http.Handlers to set trailers
@@ -2643,8 +2703,7 @@ func checkWriteHeaderCode(code int) {
 	// Issue 22880: require valid WriteHeader status codes.
 	// For now we only enforce that it's three digits.
 	// In the future we might block things over 599 (600 and above aren't defined
-	// at http://httpwg.org/specs/rfc7231.html#status.codes)
+	// at http://httpwg.org/specs/rfc7231.html#status.codes).
-	// and we might block under 200 (once we have more mature 1xx support).
 	// But for now any three digits.
 	//
 	// We used to send "HTTP/1.1 000 0" on the wire in responses but there's
@@ -2665,13 +2724,41 @@ func (w *responseWriter) WriteHeader(code int) {
 }
 
 func (rws *responseWriterState) writeHeader(code int) {
-	if !rws.wroteHeader {
+	if rws.wroteHeader {
-		checkWriteHeaderCode(code)
+		return
-		rws.wroteHeader = true
+	}
-		rws.status = code
+
-		if len(rws.handlerHeader) > 0 {
+	checkWriteHeaderCode(code)
-			rws.snapHeader = cloneHeader(rws.handlerHeader)
+
+	// Handle informational headers
+	if code >= 100 && code <= 199 {
+		// Per RFC 8297 we must not clear the current header map
+		h := rws.handlerHeader
+
+		_, cl := h["Content-Length"]
+		_, te := h["Transfer-Encoding"]
+		if cl || te {
+			h = h.Clone()
+			h.Del("Content-Length")
+			h.Del("Transfer-Encoding")
 		}
+
+		if rws.conn.writeHeaders(rws.stream, &writeResHeaders{
+			streamID:    rws.stream.id,
+			httpResCode: code,
+			h:           h,
+			endStream:   rws.handlerDone && !rws.hasTrailers(),
+		}) != nil {
+			rws.dirty = true
+		}
+
+		return
+	}
+
+	rws.wroteHeader = true
+	rws.status = code
+	if len(rws.handlerHeader) > 0 {
+		rws.snapHeader = cloneHeader(rws.handlerHeader)
 	}
 }
 

vendor/golang.org/x/net/http2/transport.go

@@ -16,7 +16,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"math"
 	mathrand "math/rand"
@@ -501,12 +500,14 @@ func (t *Transport) RoundTripOpt(req *http.Request, opt RoundTripOpt) (*http.Res
 			if req, err = shouldRetryRequest(req, err); err == nil {
 				// After the first retry, do exponential backoff with 10% jitter.
 				if retry == 0 {
+					t.vlogf("RoundTrip retrying after failure: %v", err)
 					continue
 				}
 				backoff := float64(uint(1) << (uint(retry) - 1))
 				backoff += backoff * (0.1 * mathrand.Float64())
 				select {
 				case <-time.After(time.Second * time.Duration(backoff)):
+					t.vlogf("RoundTrip retrying after failure: %v", err)
 					continue
 				case <-req.Context().Done():
 					err = req.Context().Err()
@@ -732,10 +733,13 @@ func (cc *ClientConn) healthCheck() {
 	// trigger the healthCheck again if there is no frame received.
 	ctx, cancel := context.WithTimeout(context.Background(), pingTimeout)
 	defer cancel()
+	cc.vlogf("http2: Transport sending health check")
 	err := cc.Ping(ctx)
 	if err != nil {
+		cc.vlogf("http2: Transport health check failure: %v", err)
 		cc.closeForLostPing()
-		return
+	} else {
+		cc.vlogf("http2: Transport health check success")
 	}
 }
 
@@ -1765,7 +1769,8 @@ func (cc *ClientConn) encodeHeaders(req *http.Request, addGzipHeader bool, trail
 		}
 		for _, v := range vv {
 			if !httpguts.ValidHeaderFieldValue(v) {
-				return nil, fmt.Errorf("invalid HTTP header value %q for header %q", v, k)
+				// Don't include the value in the error, because it may be sensitive.
+				return nil, fmt.Errorf("invalid HTTP header value for header %q", k)
 			}
 		}
 	}
@@ -2898,7 +2903,12 @@ func (t *Transport) logf(format string, args ...interface{}) {
 	log.Printf(format, args...)
 }
 
-var noBody io.ReadCloser = ioutil.NopCloser(bytes.NewReader(nil))
+var noBody io.ReadCloser = noBodyReader{}
+
+type noBodyReader struct{}
+
+func (noBodyReader) Close() error             { return nil }
+func (noBodyReader) Read([]byte) (int, error) { return 0, io.EOF }
 
 type missingBody struct{}
 

vendor/golang.org/x/net/http2/writesched_priority.go

@@ -383,16 +383,15 @@ func (ws *priorityWriteScheduler) AdjustStream(streamID uint32, priority Priorit
 
 func (ws *priorityWriteScheduler) Push(wr FrameWriteRequest) {
 	var n *priorityNode
-	if id := wr.StreamID(); id == 0 {
+	if wr.isControl() {
 		n = &ws.root
 	} else {
+		id := wr.StreamID()
 		n = ws.nodes[id]
 		if n == nil {
 			// id is an idle or closed stream. wr should not be a HEADERS or
-			// DATA frame. However, wr can be a RST_STREAM. In this case, we
+			// DATA frame. In other case, we push wr onto the root, rather
-			// push wr onto the root, rather than creating a new priorityNode,
+			// than creating a new priorityNode.
-			// since RST_STREAM is tiny and the stream's priority is unknown
-			// anyway. See issue #17919.
 			if wr.DataSize() > 0 {
 				panic("add DATA on non-open stream")
 			}

vendor/golang.org/x/net/idna/trieval.go

@@ -17,23 +17,23 @@ package idna
 //
 // The per-rune values have the following format:
 //
-//   if mapped {
+//	if mapped {
-//     if inlinedXOR {
+//	  if inlinedXOR {
-//       15..13 inline XOR marker
+//	    15..13 inline XOR marker
-//       12..11 unused
+//	    12..11 unused
-//       10..3  inline XOR mask
+//	    10..3  inline XOR mask
-//     } else {
+//	  } else {
-//       15..3  index into xor or mapping table
+//	    15..3  index into xor or mapping table
-//     }
+//	  }
-//   } else {
+//	} else {
-//       15..14 unused
+//	    15..14 unused
-//       13     mayNeedNorm
+//	    13     mayNeedNorm
-//       12..11 attributes
+//	    12..11 attributes
-//       10..8  joining type
+//	    10..8  joining type
-//        7..3  category type
+//	     7..3  category type
-//   }
+//	}
-//      2  use xor pattern
+//	   2  use xor pattern
-//   1..0  mapped category
+//	1..0  mapped category
 //
 // See the definitions below for a more detailed description of the various
 // bits.

vendor/golang.org/x/sys/AUTHORS

@@ -1,3 +0,0 @@
-# This source code refers to The Go Authors for copyright purposes.
-# The master list of authors is in the main Go distribution,
-# visible at http://tip.golang.org/AUTHORS.

vendor/golang.org/x/sys/CONTRIBUTORS

@@ -1,3 +0,0 @@
-# This source code was written by the Go contributors.
-# The master list of contributors is in the main Go distribution,
-# visible at http://tip.golang.org/CONTRIBUTORS.

vendor/golang.org/x/sys/unix/mkerrors.sh

@@ -297,6 +297,10 @@ struct ltchars {
 #define SOL_NETLINK	270
 #endif
 
+#ifndef SOL_SMC
+#define SOL_SMC 286
+#endif
+
 #ifdef SOL_BLUETOOTH
 // SPARC includes this in /usr/include/sparc64-linux-gnu/bits/socket.h
 // but it is already in bluetooth_linux.go

vendor/golang.org/x/sys/unix/zerrors_linux.go

@@ -2940,6 +2940,7 @@ const (
 	SOL_RAW                                     = 0xff
 	SOL_RDS                                     = 0x114
 	SOL_RXRPC                                   = 0x110
+	SOL_SMC                                     = 0x11e
 	SOL_TCP                                     = 0x6
 	SOL_TIPC                                    = 0x10f
 	SOL_TLS                                     = 0x11a

vendor/google.golang.org/grpc/CONTRIBUTING.md

@@ -53,9 +53,8 @@ How to get your contributions merged smoothly and quickly.
 - **All tests need to be passing** before your change can be merged. We
   recommend you **run tests locally** before creating your PR to catch breakages
   early on.
-  - `make all` to test everything, OR
+  - `VET_SKIP_PROTO=1 ./vet.sh` to catch vet errors
-  - `make vet` to catch vet errors
+  - `go test -cpu 1,4 -timeout 7m ./...` to run the tests
-  - `make test` to run the tests
+  - `go test -race -cpu 1,4 -timeout 7m ./...` to run tests in race mode
-  - `make testrace` to run tests in race mode
 
 - Exceptions to the rules can be made if there's a compelling reason for doing so.

vendor/google.golang.org/grpc/MAINTAINERS.md

@@ -8,17 +8,18 @@ See [CONTRIBUTING.md](https://github.com/grpc/grpc-community/blob/master/CONTRIB
 for general contribution guidelines.
 
 ## Maintainers (in alphabetical order)
-- [canguler](https://github.com/canguler), Google LLC
+
 - [cesarghali](https://github.com/cesarghali), Google LLC
 - [dfawley](https://github.com/dfawley), Google LLC
 - [easwars](https://github.com/easwars), Google LLC
-- [jadekler](https://github.com/jadekler), Google LLC
 - [menghanl](https://github.com/menghanl), Google LLC
 - [srini100](https://github.com/srini100), Google LLC
 
 ## Emeritus Maintainers (in alphabetical order)
 - [adelez](https://github.com/adelez), Google LLC
+- [canguler](https://github.com/canguler), Google LLC
 - [iamqizhao](https://github.com/iamqizhao), Google LLC
+- [jadekler](https://github.com/jadekler), Google LLC
 - [jtattermusch](https://github.com/jtattermusch), Google LLC
 - [lyuxuan](https://github.com/lyuxuan), Google LLC
 - [makmukhi](https://github.com/makmukhi), Google LLC

vendor/google.golang.org/grpc/Makefile

@@ -41,8 +41,6 @@ vetdeps:
 	clean \
 	proto \
 	test \
-	testappengine \
-	testappenginedeps \
 	testrace \
 	vet \
 	vetdeps

vendor/google.golang.org/grpc/NOTICE.txt

@@ -0,0 +1,13 @@
+Copyright 2014 gRPC authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

vendor/google.golang.org/grpc/attributes/attributes.go

@@ -25,55 +25,77 @@
 // later release.
 package attributes
 
-import "fmt"
-
 // Attributes is an immutable struct for storing and retrieving generic
 // key/value pairs.  Keys must be hashable, and users should define their own
-// types for keys.
+// types for keys.  Values should not be modified after they are added to an
+// Attributes or if they were received from one.  If values implement 'Equal(o
+// interface{}) bool', it will be called by (*Attributes).Equal to determine
+// whether two values with the same key should be considered equal.
 type Attributes struct {
 	m map[interface{}]interface{}
 }
 
-// New returns a new Attributes containing all key/value pairs in kvs.  If the
+// New returns a new Attributes containing the key/value pair.
-// same key appears multiple times, the last value overwrites all previous
+func New(key, value interface{}) *Attributes {
-// values for that key.  Panics if len(kvs) is not even.
+	return &Attributes{m: map[interface{}]interface{}{key: value}}
-func New(kvs ...interface{}) *Attributes {
-	if len(kvs)%2 != 0 {
-		panic(fmt.Sprintf("attributes.New called with unexpected input: len(kvs) = %v", len(kvs)))
-	}
-	a := &Attributes{m: make(map[interface{}]interface{}, len(kvs)/2)}
-	for i := 0; i < len(kvs)/2; i++ {
-		a.m[kvs[i*2]] = kvs[i*2+1]
-	}
-	return a
 }
 
-// WithValues returns a new Attributes containing all key/value pairs in a and
+// WithValue returns a new Attributes containing the previous keys and values
-// kvs.  Panics if len(kvs) is not even.  If the same key appears multiple
+// and the new key/value pair.  If the same key appears multiple times, the
-// times, the last value overwrites all previous values for that key.  To
+// last value overwrites all previous values for that key.  To remove an
-// remove an existing key, use a nil value.
+// existing key, use a nil value.  value should not be modified later.
-func (a *Attributes) WithValues(kvs ...interface{}) *Attributes {
+func (a *Attributes) WithValue(key, value interface{}) *Attributes {
 	if a == nil {
-		return New(kvs...)
+		return New(key, value)
 	}
-	if len(kvs)%2 != 0 {
+	n := &Attributes{m: make(map[interface{}]interface{}, len(a.m)+1)}
-		panic(fmt.Sprintf("attributes.New called with unexpected input: len(kvs) = %v", len(kvs)))
-	}
-	n := &Attributes{m: make(map[interface{}]interface{}, len(a.m)+len(kvs)/2)}
 	for k, v := range a.m {
 		n.m[k] = v
 	}
-	for i := 0; i < len(kvs)/2; i++ {
+	n.m[key] = value
-		n.m[kvs[i*2]] = kvs[i*2+1]
-	}
 	return n
 }
 
 // Value returns the value associated with these attributes for key, or nil if
-// no value is associated with key.
+// no value is associated with key.  The returned value should not be modified.
 func (a *Attributes) Value(key interface{}) interface{} {
 	if a == nil {
 		return nil
 	}
 	return a.m[key]
 }
+
+// Equal returns whether a and o are equivalent.  If 'Equal(o interface{})
+// bool' is implemented for a value in the attributes, it is called to
+// determine if the value matches the one stored in the other attributes.  If
+// Equal is not implemented, standard equality is used to determine if the two
+// values are equal. Note that some types (e.g. maps) aren't comparable by
+// default, so they must be wrapped in a struct, or in an alias type, with Equal
+// defined.
+func (a *Attributes) Equal(o *Attributes) bool {
+	if a == nil && o == nil {
+		return true
+	}
+	if a == nil || o == nil {
+		return false
+	}
+	if len(a.m) != len(o.m) {
+		return false
+	}
+	for k, v := range a.m {
+		ov, ok := o.m[k]
+		if !ok {
+			// o missing element of a
+			return false
+		}
+		if eq, ok := v.(interface{ Equal(o interface{}) bool }); ok {
+			if !eq.Equal(ov) {
+				return false
+			}
+		} else if v != ov {
+			// Fallback to a standard equality check if Value is unimplemented.
+			return false
+		}
+	}
+	return true
+}

vendor/google.golang.org/grpc/balancer/balancer.go

@@ -27,6 +27,7 @@ import (
 	"net"
 	"strings"
 
+	"google.golang.org/grpc/channelz"
 	"google.golang.org/grpc/connectivity"
 	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/internal"
@@ -75,24 +76,26 @@ func Get(name string) Builder {
 	return nil
 }
 
-// SubConn represents a gRPC sub connection.
+// A SubConn represents a single connection to a gRPC backend service.
-// Each sub connection contains a list of addresses. gRPC will
-// try to connect to them (in sequence), and stop trying the
-// remainder once one connection is successful.
 //
-// The reconnect backoff will be applied on the list, not a single address.
+// Each SubConn contains a list of addresses.
-// For example, try_on_all_addresses -> backoff -> try_on_all_addresses.
 //
-// All SubConns start in IDLE, and will not try to connect. To trigger
+// All SubConns start in IDLE, and will not try to connect. To trigger the
-// the connecting, Balancers must call Connect.
+// connecting, Balancers must call Connect.  If a connection re-enters IDLE,
-// When the connection encounters an error, it will reconnect immediately.
+// Balancers must call Connect again to trigger a new connection attempt.
-// When the connection becomes IDLE, it will not reconnect unless Connect is
-// called.
 //
-// This interface is to be implemented by gRPC. Users should not need a
+// gRPC will try to connect to the addresses in sequence, and stop trying the
-// brand new implementation of this interface. For the situations like
+// remainder once the first connection is successful. If an attempt to connect
-// testing, the new implementation should embed this interface. This allows
+// to all addresses encounters an error, the SubConn will enter
-// gRPC to add new methods to this interface.
+// TRANSIENT_FAILURE for a backoff period, and then transition to IDLE.
+//
+// Once established, if a connection is lost, the SubConn will transition
+// directly to IDLE.
+//
+// This interface is to be implemented by gRPC. Users should not need their own
+// implementation of this interface. For situations like testing, any
+// implementations should embed this interface. This allows gRPC to add new
+// methods to this interface.
 type SubConn interface {
 	// UpdateAddresses updates the addresses used in this SubConn.
 	// gRPC checks if currently-connected address is still in the new list.
@@ -172,25 +175,32 @@ type ClientConn interface {
 
 // BuildOptions contains additional information for Build.
 type BuildOptions struct {
-	// DialCreds is the transport credential the Balancer implementation can
+	// DialCreds is the transport credentials to use when communicating with a
-	// use to dial to a remote load balancer server. The Balancer implementations
+	// remote load balancer server. Balancer implementations which do not
-	// can ignore this if it does not need to talk to another party securely.
+	// communicate with a remote load balancer server can ignore this field.
 	DialCreds credentials.TransportCredentials
-	// CredsBundle is the credentials bundle that the Balancer can use.
+	// CredsBundle is the credentials bundle to use when communicating with a
+	// remote load balancer server. Balancer implementations which do not
+	// communicate with a remote load balancer server can ignore this field.
 	CredsBundle credentials.Bundle
-	// Dialer is the custom dialer the Balancer implementation can use to dial
+	// Dialer is the custom dialer to use when communicating with a remote load
-	// to a remote load balancer server. The Balancer implementations
+	// balancer server. Balancer implementations which do not communicate with a
-	// can ignore this if it doesn't need to talk to remote balancer.
+	// remote load balancer server can ignore this field.
 	Dialer func(context.Context, string) (net.Conn, error)
-	// ChannelzParentID is the entity parent's channelz unique identification number.
+	// Authority is the server name to use as part of the authentication
-	ChannelzParentID int64
+	// handshake when communicating with a remote load balancer server. Balancer
+	// implementations which do not communicate with a remote load balancer
+	// server can ignore this field.
+	Authority string
+	// ChannelzParentID is the parent ClientConn's channelz ID.
+	ChannelzParentID *channelz.Identifier
 	// CustomUserAgent is the custom user agent set on the parent ClientConn.
 	// The balancer should set the same custom user agent if it creates a
 	// ClientConn.
 	CustomUserAgent string
-	// Target contains the parsed address info of the dial target. It is the same resolver.Target as
+	// Target contains the parsed address info of the dial target. It is the
-	// passed to the resolver.
+	// same resolver.Target as passed to the resolver. See the documentation for
-	// See the documentation for the resolver.Target type for details about what it contains.
+	// the resolver.Target type for details about what it contains.
 	Target resolver.Target
 }
 
@@ -326,6 +336,20 @@ type Balancer interface {
 	Close()
 }
 
+// ExitIdler is an optional interface for balancers to implement.  If
+// implemented, ExitIdle will be called when ClientConn.Connect is called, if
+// the ClientConn is idle.  If unimplemented, ClientConn.Connect will cause
+// all SubConns to connect.
+//
+// Notice: it will be required for all balancers to implement this in a future
+// release.
+type ExitIdler interface {
+	// ExitIdle instructs the LB policy to reconnect to backends / exit the
+	// IDLE state, if appropriate and possible.  Note that SubConns that enter
+	// the IDLE state will not reconnect until SubConn.Connect is called.
+	ExitIdle()
+}
+
 // SubConnState describes the state of a SubConn.
 type SubConnState struct {
 	// ConnectivityState is the connectivity state of the SubConn.
@@ -353,8 +377,10 @@ var ErrBadResolverState = errors.New("bad resolver state")
 //
 // It's not thread safe.
 type ConnectivityStateEvaluator struct {
-	numReady      uint64 // Number of addrConns in ready state.
+	numReady            uint64 // Number of addrConns in ready state.
-	numConnecting uint64 // Number of addrConns in connecting state.
+	numConnecting       uint64 // Number of addrConns in connecting state.
+	numTransientFailure uint64 // Number of addrConns in transient failure state.
+	numIdle             uint64 // Number of addrConns in idle state.
 }
 
 // RecordTransition records state change happening in subConn and based on that
@@ -362,9 +388,11 @@ type ConnectivityStateEvaluator struct {
 //
 //  - If at least one SubConn in Ready, the aggregated state is Ready;
 //  - Else if at least one SubConn in Connecting, the aggregated state is Connecting;
-//  - Else the aggregated state is TransientFailure.
+//  - Else if at least one SubConn is TransientFailure, the aggregated state is Transient Failure;
+//  - Else if at least one SubConn is Idle, the aggregated state is Idle;
+//  - Else there are no subconns and the aggregated state is Transient Failure
 //
-// Idle and Shutdown are not considered.
+// Shutdown is not considered.
 func (cse *ConnectivityStateEvaluator) RecordTransition(oldState, newState connectivity.State) connectivity.State {
 	// Update counters.
 	for idx, state := range []connectivity.State{oldState, newState} {
@@ -374,6 +402,10 @@ func (cse *ConnectivityStateEvaluator) RecordTransition(oldState, newState conne
 			cse.numReady += updateVal
 		case connectivity.Connecting:
 			cse.numConnecting += updateVal
+		case connectivity.TransientFailure:
+			cse.numTransientFailure += updateVal
+		case connectivity.Idle:
+			cse.numIdle += updateVal
 		}
 	}
 
@@ -384,5 +416,11 @@ func (cse *ConnectivityStateEvaluator) RecordTransition(oldState, newState conne
 	if cse.numConnecting > 0 {
 		return connectivity.Connecting
 	}
+	if cse.numTransientFailure > 0 {
+		return connectivity.TransientFailure
+	}
+	if cse.numIdle > 0 {
+		return connectivity.Idle
+	}
 	return connectivity.TransientFailure
 }

vendor/google.golang.org/grpc/balancer/base/balancer.go

@@ -22,7 +22,6 @@ import (
 	"errors"
 	"fmt"
 
-	"google.golang.org/grpc/attributes"
 	"google.golang.org/grpc/balancer"
 	"google.golang.org/grpc/connectivity"
 	"google.golang.org/grpc/grpclog"
@@ -42,7 +41,7 @@ func (bb *baseBuilder) Build(cc balancer.ClientConn, opt balancer.BuildOptions)
 		cc:            cc,
 		pickerBuilder: bb.pickerBuilder,
 
-		subConns: make(map[resolver.Address]subConnInfo),
+		subConns: resolver.NewAddressMap(),
 		scStates: make(map[balancer.SubConn]connectivity.State),
 		csEvltr:  &balancer.ConnectivityStateEvaluator{},
 		config:   bb.config,
@@ -58,11 +57,6 @@ func (bb *baseBuilder) Name() string {
 	return bb.name
 }
 
-type subConnInfo struct {
-	subConn balancer.SubConn
-	attrs   *attributes.Attributes
-}
-
 type baseBalancer struct {
 	cc            balancer.ClientConn
 	pickerBuilder PickerBuilder
@@ -70,7 +64,7 @@ type baseBalancer struct {
 	csEvltr *balancer.ConnectivityStateEvaluator
 	state   connectivity.State
 
-	subConns map[resolver.Address]subConnInfo // `attributes` is stripped from the keys of this map (the addresses)
+	subConns *resolver.AddressMap
 	scStates map[balancer.SubConn]connectivity.State
 	picker   balancer.Picker
 	config   Config
@@ -81,7 +75,7 @@ type baseBalancer struct {
 
 func (b *baseBalancer) ResolverError(err error) {
 	b.resolverErr = err
-	if len(b.subConns) == 0 {
+	if b.subConns.Len() == 0 {
 		b.state = connectivity.TransientFailure
 	}
 
@@ -105,52 +99,29 @@ func (b *baseBalancer) UpdateClientConnState(s balancer.ClientConnState) error {
 	// Successful resolution; clear resolver error and ensure we return nil.
 	b.resolverErr = nil
 	// addrsSet is the set converted from addrs, it's used for quick lookup of an address.
-	addrsSet := make(map[resolver.Address]struct{})
+	addrsSet := resolver.NewAddressMap()
 	for _, a := range s.ResolverState.Addresses {
-		// Strip attributes from addresses before using them as map keys. So
+		addrsSet.Set(a, nil)
-		// that when two addresses only differ in attributes pointers (but with
+		if _, ok := b.subConns.Get(a); !ok {
-		// the same attribute content), they are considered the same address.
-		//
-		// Note that this doesn't handle the case where the attribute content is
-		// different. So if users want to set different attributes to create
-		// duplicate connections to the same backend, it doesn't work. This is
-		// fine for now, because duplicate is done by setting Metadata today.
-		//
-		// TODO: read attributes to handle duplicate connections.
-		aNoAttrs := a
-		aNoAttrs.Attributes = nil
-		addrsSet[aNoAttrs] = struct{}{}
-		if scInfo, ok := b.subConns[aNoAttrs]; !ok {
 			// a is a new address (not existing in b.subConns).
-			//
-			// When creating SubConn, the original address with attributes is
-			// passed through. So that connection configurations in attributes
-			// (like creds) will be used.
 			sc, err := b.cc.NewSubConn([]resolver.Address{a}, balancer.NewSubConnOptions{HealthCheckEnabled: b.config.HealthCheck})
 			if err != nil {
 				logger.Warningf("base.baseBalancer: failed to create new SubConn: %v", err)
 				continue
 			}
-			b.subConns[aNoAttrs] = subConnInfo{subConn: sc, attrs: a.Attributes}
+			b.subConns.Set(a, sc)
 			b.scStates[sc] = connectivity.Idle
+			b.csEvltr.RecordTransition(connectivity.Shutdown, connectivity.Idle)
 			sc.Connect()
-		} else {
-			// Always update the subconn's address in case the attributes
-			// changed.
-			//
-			// The SubConn does a reflect.DeepEqual of the new and old
-			// addresses. So this is a noop if the current address is the same
-			// as the old one (including attributes).
-			scInfo.attrs = a.Attributes
-			b.subConns[aNoAttrs] = scInfo
-			b.cc.UpdateAddresses(scInfo.subConn, []resolver.Address{a})
 		}
 	}
-	for a, scInfo := range b.subConns {
+	for _, a := range b.subConns.Keys() {
+		sci, _ := b.subConns.Get(a)
+		sc := sci.(balancer.SubConn)
 		// a was removed by resolver.
-		if _, ok := addrsSet[a]; !ok {
+		if _, ok := addrsSet.Get(a); !ok {
-			b.cc.RemoveSubConn(scInfo.subConn)
+			b.cc.RemoveSubConn(sc)
-			delete(b.subConns, a)
+			b.subConns.Delete(a)
 			// Keep the state of this sc in b.scStates until sc's state becomes Shutdown.
 			// The entry will be deleted in UpdateSubConnState.
 		}
@@ -192,10 +163,11 @@ func (b *baseBalancer) regeneratePicker() {
 	readySCs := make(map[balancer.SubConn]SubConnInfo)
 
 	// Filter out all ready SCs from full subConn map.
-	for addr, scInfo := range b.subConns {
+	for _, addr := range b.subConns.Keys() {
-		if st, ok := b.scStates[scInfo.subConn]; ok && st == connectivity.Ready {
+		sci, _ := b.subConns.Get(addr)
-			addr.Attributes = scInfo.attrs
+		sc := sci.(balancer.SubConn)
-			readySCs[scInfo.subConn] = SubConnInfo{Address: addr}
+		if st, ok := b.scStates[sc]; ok && st == connectivity.Ready {
+			readySCs[sc] = SubConnInfo{Address: addr}
 		}
 	}
 	b.picker = b.pickerBuilder.Build(PickerBuildInfo{ReadySCs: readySCs})
@@ -213,10 +185,14 @@ func (b *baseBalancer) UpdateSubConnState(sc balancer.SubConn, state balancer.Su
 		}
 		return
 	}
-	if oldS == connectivity.TransientFailure && s == connectivity.Connecting {
+	if oldS == connectivity.TransientFailure &&
-		// Once a subconn enters TRANSIENT_FAILURE, ignore subsequent
+		(s == connectivity.Connecting || s == connectivity.Idle) {
+		// Once a subconn enters TRANSIENT_FAILURE, ignore subsequent IDLE or
 		// CONNECTING transitions to prevent the aggregated state from being
 		// always CONNECTING when many backends exist but are all down.
+		if s == connectivity.Idle {
+			sc.Connect()
+		}
 		return
 	}
 	b.scStates[sc] = s
@@ -242,7 +218,6 @@ func (b *baseBalancer) UpdateSubConnState(sc balancer.SubConn, state balancer.Su
 		b.state == connectivity.TransientFailure {
 		b.regeneratePicker()
 	}
-
 	b.cc.UpdateState(balancer.State{ConnectivityState: b.state, Picker: b.picker})
 }
 
@@ -251,6 +226,11 @@ func (b *baseBalancer) UpdateSubConnState(sc balancer.SubConn, state balancer.Su
 func (b *baseBalancer) Close() {
 }
 
+// ExitIdle is a nop because the base balancer attempts to stay connected to
+// all SubConns at all times.
+func (b *baseBalancer) ExitIdle() {
+}
+
 // NewErrPicker returns a Picker that always returns err on Pick().
 func NewErrPicker(err error) balancer.Picker {
 	return &errPicker{err: err}

vendor/google.golang.org/grpc/balancer/grpclb/state/state.go

@@ -39,7 +39,7 @@ type State struct {
 // Set returns a copy of the provided state with attributes containing s.  s's
 // data should not be mutated after calling Set.
 func Set(state resolver.State, s *State) resolver.State {
-	state.Attributes = state.Attributes.WithValues(key, s)
+	state.Attributes = state.Attributes.WithValue(key, s)
 	return state
 }
 

vendor/google.golang.org/grpc/balancer/roundrobin/roundrobin.go

@@ -47,11 +47,11 @@ func init() {
 type rrPickerBuilder struct{}
 
 func (*rrPickerBuilder) Build(info base.PickerBuildInfo) balancer.Picker {
-	logger.Infof("roundrobinPicker: newPicker called with info: %v", info)
+	logger.Infof("roundrobinPicker: Build called with info: %v", info)
 	if len(info.ReadySCs) == 0 {
 		return base.NewErrPicker(balancer.ErrNoSubConnAvailable)
 	}
-	var scs []balancer.SubConn
+	scs := make([]balancer.SubConn, 0, len(info.ReadySCs))
 	for sc := range info.ReadySCs {
 		scs = append(scs, sc)
 	}

vendor/google.golang.org/grpc/balancer_conn_wrappers.go

@@ -20,105 +20,178 @@ package grpc
 
 import (
 	"fmt"
+	"strings"
 	"sync"
 
 	"google.golang.org/grpc/balancer"
 	"google.golang.org/grpc/connectivity"
+	"google.golang.org/grpc/internal/balancer/gracefulswitch"
 	"google.golang.org/grpc/internal/buffer"
 	"google.golang.org/grpc/internal/channelz"
 	"google.golang.org/grpc/internal/grpcsync"
 	"google.golang.org/grpc/resolver"
 )
 
-// scStateUpdate contains the subConn and the new state it changed to.
+// ccBalancerWrapper sits between the ClientConn and the Balancer.
+//
+// ccBalancerWrapper implements methods corresponding to the ones on the
+// balancer.Balancer interface. The ClientConn is free to call these methods
+// concurrently and the ccBalancerWrapper ensures that calls from the ClientConn
+// to the Balancer happen synchronously and in order.
+//
+// ccBalancerWrapper also implements the balancer.ClientConn interface and is
+// passed to the Balancer implementations. It invokes unexported methods on the
+// ClientConn to handle these calls from the Balancer.
+//
+// It uses the gracefulswitch.Balancer internally to ensure that balancer
+// switches happen in a graceful manner.
+type ccBalancerWrapper struct {
+	cc *ClientConn
+
+	// Since these fields are accessed only from handleXxx() methods which are
+	// synchronized by the watcher goroutine, we do not need a mutex to protect
+	// these fields.
+	balancer        *gracefulswitch.Balancer
+	curBalancerName string
+
+	updateCh *buffer.Unbounded // Updates written on this channel are processed by watcher().
+	resultCh *buffer.Unbounded // Results of calls to UpdateClientConnState() are pushed here.
+	closed   *grpcsync.Event   // Indicates if close has been called.
+	done     *grpcsync.Event   // Indicates if close has completed its work.
+}
+
+// newCCBalancerWrapper creates a new balancer wrapper. The underlying balancer
+// is not created until the switchTo() method is invoked.
+func newCCBalancerWrapper(cc *ClientConn, bopts balancer.BuildOptions) *ccBalancerWrapper {
+	ccb := &ccBalancerWrapper{
+		cc:       cc,
+		updateCh: buffer.NewUnbounded(),
+		resultCh: buffer.NewUnbounded(),
+		closed:   grpcsync.NewEvent(),
+		done:     grpcsync.NewEvent(),
+	}
+	go ccb.watcher()
+	ccb.balancer = gracefulswitch.NewBalancer(ccb, bopts)
+	return ccb
+}
+
+// The following xxxUpdate structs wrap the arguments received as part of the
+// corresponding update. The watcher goroutine uses the 'type' of the update to
+// invoke the appropriate handler routine to handle the update.
+
+type ccStateUpdate struct {
+	ccs *balancer.ClientConnState
+}
+
 type scStateUpdate struct {
 	sc    balancer.SubConn
 	state connectivity.State
 	err   error
 }
 
-// ccBalancerWrapper is a wrapper on top of cc for balancers.
+type exitIdleUpdate struct{}
-// It implements balancer.ClientConn interface.
-type ccBalancerWrapper struct {
-	cc         *ClientConn
-	balancerMu sync.Mutex // synchronizes calls to the balancer
-	balancer   balancer.Balancer
-	updateCh   *buffer.Unbounded
-	closed     *grpcsync.Event
-	done       *grpcsync.Event
 
-	mu       sync.Mutex
+type resolverErrorUpdate struct {
-	subConns map[*acBalancerWrapper]struct{}
+	err error
 }
 
-func newCCBalancerWrapper(cc *ClientConn, b balancer.Builder, bopts balancer.BuildOptions) *ccBalancerWrapper {
+type switchToUpdate struct {
-	ccb := &ccBalancerWrapper{
+	name string
-		cc:       cc,
-		updateCh: buffer.NewUnbounded(),
-		closed:   grpcsync.NewEvent(),
-		done:     grpcsync.NewEvent(),
-		subConns: make(map[*acBalancerWrapper]struct{}),
-	}
-	go ccb.watcher()
-	ccb.balancer = b.Build(ccb, bopts)
-	return ccb
 }
 
-// watcher balancer functions sequentially, so the balancer can be implemented
+type subConnUpdate struct {
-// lock-free.
+	acbw *acBalancerWrapper
+}
+
+// watcher is a long-running goroutine which reads updates from a channel and
+// invokes corresponding methods on the underlying balancer. It ensures that
+// these methods are invoked in a synchronous fashion. It also ensures that
+// these methods are invoked in the order in which the updates were received.
 func (ccb *ccBalancerWrapper) watcher() {
 	for {
 		select {
-		case t := <-ccb.updateCh.Get():
+		case u := <-ccb.updateCh.Get():
 			ccb.updateCh.Load()
 			if ccb.closed.HasFired() {
 				break
 			}
-			switch u := t.(type) {
+			switch update := u.(type) {
+			case *ccStateUpdate:
+				ccb.handleClientConnStateChange(update.ccs)
 			case *scStateUpdate:
-				ccb.balancerMu.Lock()
+				ccb.handleSubConnStateChange(update)
-				ccb.balancer.UpdateSubConnState(u.sc, balancer.SubConnState{ConnectivityState: u.state, ConnectionError: u.err})
+			case *exitIdleUpdate:
-				ccb.balancerMu.Unlock()
+				ccb.handleExitIdle()
-			case *acBalancerWrapper:
+			case *resolverErrorUpdate:
-				ccb.mu.Lock()
+				ccb.handleResolverError(update.err)
-				if ccb.subConns != nil {
+			case *switchToUpdate:
-					delete(ccb.subConns, u)
+				ccb.handleSwitchTo(update.name)
-					ccb.cc.removeAddrConn(u.getAddrConn(), errConnDrain)
+			case *subConnUpdate:
-				}
+				ccb.handleRemoveSubConn(update.acbw)
-				ccb.mu.Unlock()
 			default:
-				logger.Errorf("ccBalancerWrapper.watcher: unknown update %+v, type %T", t, t)
+				logger.Errorf("ccBalancerWrapper.watcher: unknown update %+v, type %T", update, update)
 			}
 		case <-ccb.closed.Done():
 		}
 
 		if ccb.closed.HasFired() {
-			ccb.balancerMu.Lock()
+			ccb.handleClose()
-			ccb.balancer.Close()
-			ccb.balancerMu.Unlock()
-			ccb.mu.Lock()
-			scs := ccb.subConns
-			ccb.subConns = nil
-			ccb.mu.Unlock()
-			ccb.UpdateState(balancer.State{ConnectivityState: connectivity.Connecting, Picker: nil})
-			ccb.done.Fire()
-			// Fire done before removing the addr conns.  We can safely unblock
-			// ccb.close and allow the removeAddrConns to happen
-			// asynchronously.
-			for acbw := range scs {
-				ccb.cc.removeAddrConn(acbw.getAddrConn(), errConnDrain)
-			}
 			return
 		}
 	}
 }
 
-func (ccb *ccBalancerWrapper) close() {
+// updateClientConnState is invoked by grpc to push a ClientConnState update to
-	ccb.closed.Fire()
+// the underlying balancer.
-	<-ccb.done.Done()
+//
+// Unlike other methods invoked by grpc to push updates to the underlying
+// balancer, this method cannot simply push the update onto the update channel
+// and return. It needs to return the error returned by the underlying balancer
+// back to grpc which propagates that to the resolver.
+func (ccb *ccBalancerWrapper) updateClientConnState(ccs *balancer.ClientConnState) error {
+	ccb.updateCh.Put(&ccStateUpdate{ccs: ccs})
+
+	var res interface{}
+	select {
+	case res = <-ccb.resultCh.Get():
+		ccb.resultCh.Load()
+	case <-ccb.closed.Done():
+		// Return early if the balancer wrapper is closed while we are waiting for
+		// the underlying balancer to process a ClientConnState update.
+		return nil
+	}
+	// If the returned error is nil, attempting to type assert to error leads to
+	// panic. So, this needs to handled separately.
+	if res == nil {
+		return nil
+	}
+	return res.(error)
 }
 
-func (ccb *ccBalancerWrapper) handleSubConnStateChange(sc balancer.SubConn, s connectivity.State, err error) {
+// handleClientConnStateChange handles a ClientConnState update from the update
+// channel and invokes the appropriate method on the underlying balancer.
+//
+// If the addresses specified in the update contain addresses of type "grpclb"
+// and the selected LB policy is not "grpclb", these addresses will be filtered
+// out and ccs will be modified with the updated address list.
+func (ccb *ccBalancerWrapper) handleClientConnStateChange(ccs *balancer.ClientConnState) {
+	if ccb.curBalancerName != grpclbName {
+		// Filter any grpclb addresses since we don't have the grpclb balancer.
+		var addrs []resolver.Address
+		for _, addr := range ccs.ResolverState.Addresses {
+			if addr.Type == resolver.GRPCLB {
+				continue
+			}
+			addrs = append(addrs, addr)
+		}
+		ccs.ResolverState.Addresses = addrs
+	}
+	ccb.resultCh.Put(ccb.balancer.UpdateClientConnState(*ccs))
+}
+
+// updateSubConnState is invoked by grpc to push a subConn state update to the
+// underlying balancer.
+func (ccb *ccBalancerWrapper) updateSubConnState(sc balancer.SubConn, s connectivity.State, err error) {
 	// When updating addresses for a SubConn, if the address in use is not in
 	// the new addresses, the old ac will be tearDown() and a new ac will be
 	// created. tearDown() generates a state change with Shutdown state, we
@@ -136,44 +209,125 @@ func (ccb *ccBalancerWrapper) handleSubConnStateChange(sc balancer.SubConn, s co
 	})
 }
 
-func (ccb *ccBalancerWrapper) updateClientConnState(ccs *balancer.ClientConnState) error {
+// handleSubConnStateChange handles a SubConnState update from the update
-	ccb.balancerMu.Lock()
+// channel and invokes the appropriate method on the underlying balancer.
-	defer ccb.balancerMu.Unlock()
+func (ccb *ccBalancerWrapper) handleSubConnStateChange(update *scStateUpdate) {
-	return ccb.balancer.UpdateClientConnState(*ccs)
+	ccb.balancer.UpdateSubConnState(update.sc, balancer.SubConnState{ConnectivityState: update.state, ConnectionError: update.err})
+}
+
+func (ccb *ccBalancerWrapper) exitIdle() {
+	ccb.updateCh.Put(&exitIdleUpdate{})
+}
+
+func (ccb *ccBalancerWrapper) handleExitIdle() {
+	if ccb.cc.GetState() != connectivity.Idle {
+		return
+	}
+	ccb.balancer.ExitIdle()
 }
 
 func (ccb *ccBalancerWrapper) resolverError(err error) {
-	ccb.balancerMu.Lock()
+	ccb.updateCh.Put(&resolverErrorUpdate{err: err})
+}
+
+func (ccb *ccBalancerWrapper) handleResolverError(err error) {
 	ccb.balancer.ResolverError(err)
-	ccb.balancerMu.Unlock()
+}
+
+// switchTo is invoked by grpc to instruct the balancer wrapper to switch to the
+// LB policy identified by name.
+//
+// ClientConn calls newCCBalancerWrapper() at creation time. Upon receipt of the
+// first good update from the name resolver, it determines the LB policy to use
+// and invokes the switchTo() method. Upon receipt of every subsequent update
+// from the name resolver, it invokes this method.
+//
+// the ccBalancerWrapper keeps track of the current LB policy name, and skips
+// the graceful balancer switching process if the name does not change.
+func (ccb *ccBalancerWrapper) switchTo(name string) {
+	ccb.updateCh.Put(&switchToUpdate{name: name})
+}
+
+// handleSwitchTo handles a balancer switch update from the update channel. It
+// calls the SwitchTo() method on the gracefulswitch.Balancer with a
+// balancer.Builder corresponding to name. If no balancer.Builder is registered
+// for the given name, it uses the default LB policy which is "pick_first".
+func (ccb *ccBalancerWrapper) handleSwitchTo(name string) {
+	// TODO: Other languages use case-insensitive balancer registries. We should
+	// switch as well. See: https://github.com/grpc/grpc-go/issues/5288.
+	if strings.EqualFold(ccb.curBalancerName, name) {
+		return
+	}
+
+	// TODO: Ensure that name is a registered LB policy when we get here.
+	// We currently only validate the `loadBalancingConfig` field. We need to do
+	// the same for the `loadBalancingPolicy` field and reject the service config
+	// if the specified policy is not registered.
+	builder := balancer.Get(name)
+	if builder == nil {
+		channelz.Warningf(logger, ccb.cc.channelzID, "Channel switches to new LB policy %q, since the specified LB policy %q was not registered", PickFirstBalancerName, name)
+		builder = newPickfirstBuilder()
+	} else {
+		channelz.Infof(logger, ccb.cc.channelzID, "Channel switches to new LB policy %q", name)
+	}
+
+	if err := ccb.balancer.SwitchTo(builder); err != nil {
+		channelz.Errorf(logger, ccb.cc.channelzID, "Channel failed to build new LB policy %q: %v", name, err)
+		return
+	}
+	ccb.curBalancerName = builder.Name()
+}
+
+// handleRemoveSucConn handles a request from the underlying balancer to remove
+// a subConn.
+//
+// See comments in RemoveSubConn() for more details.
+func (ccb *ccBalancerWrapper) handleRemoveSubConn(acbw *acBalancerWrapper) {
+	ccb.cc.removeAddrConn(acbw.getAddrConn(), errConnDrain)
+}
+
+func (ccb *ccBalancerWrapper) close() {
+	ccb.closed.Fire()
+	<-ccb.done.Done()
+}
+
+func (ccb *ccBalancerWrapper) handleClose() {
+	ccb.balancer.Close()
+	ccb.done.Fire()
 }
 
 func (ccb *ccBalancerWrapper) NewSubConn(addrs []resolver.Address, opts balancer.NewSubConnOptions) (balancer.SubConn, error) {
 	if len(addrs) <= 0 {
 		return nil, fmt.Errorf("grpc: cannot create SubConn with empty address list")
 	}
-	ccb.mu.Lock()
-	defer ccb.mu.Unlock()
-	if ccb.subConns == nil {
-		return nil, fmt.Errorf("grpc: ClientConn balancer wrapper was closed")
-	}
 	ac, err := ccb.cc.newAddrConn(addrs, opts)
 	if err != nil {
+		channelz.Warningf(logger, ccb.cc.channelzID, "acBalancerWrapper: NewSubConn: failed to newAddrConn: %v", err)
 		return nil, err
 	}
 	acbw := &acBalancerWrapper{ac: ac}
 	acbw.ac.mu.Lock()
 	ac.acbw = acbw
 	acbw.ac.mu.Unlock()
-	ccb.subConns[acbw] = struct{}{}
 	return acbw, nil
 }
 
 func (ccb *ccBalancerWrapper) RemoveSubConn(sc balancer.SubConn) {
-	// The RemoveSubConn() is handled in the run() goroutine, to avoid deadlock
+	// Before we switched the ccBalancerWrapper to use gracefulswitch.Balancer, it
-	// during switchBalancer() if the old balancer calls RemoveSubConn() in its
+	// was required to handle the RemoveSubConn() method asynchronously by pushing
-	// Close().
+	// the update onto the update channel. This was done to avoid a deadlock as
-	ccb.updateCh.Put(sc)
+	// switchBalancer() was holding cc.mu when calling Close() on the old
+	// balancer, which would in turn call RemoveSubConn().
+	//
+	// With the use of gracefulswitch.Balancer in ccBalancerWrapper, handling this
+	// asynchronously is probably not required anymore since the switchTo() method
+	// handles the balancer switch by pushing the update onto the channel.
+	// TODO(easwars): Handle this inline.
+	acbw, ok := sc.(*acBalancerWrapper)
+	if !ok {
+		return
+	}
+	ccb.updateCh.Put(&subConnUpdate{acbw: acbw})
 }
 
 func (ccb *ccBalancerWrapper) UpdateAddresses(sc balancer.SubConn, addrs []resolver.Address) {
@@ -185,11 +339,6 @@ func (ccb *ccBalancerWrapper) UpdateAddresses(sc balancer.SubConn, addrs []resol
 }
 
 func (ccb *ccBalancerWrapper) UpdateState(s balancer.State) {
-	ccb.mu.Lock()
-	defer ccb.mu.Unlock()
-	if ccb.subConns == nil {
-		return
-	}
 	// Update picker before updating state.  Even though the ordering here does
 	// not matter, it can lead to multiple calls of Pick in the common start-up
 	// case where we wait for ready and then perform an RPC.  If the picker is
@@ -239,17 +388,17 @@ func (acbw *acBalancerWrapper) UpdateAddresses(addrs []resolver.Address) {
 			return
 		}
 
-		ac, err := cc.newAddrConn(addrs, opts)
+		newAC, err := cc.newAddrConn(addrs, opts)
 		if err != nil {
 			channelz.Warningf(logger, acbw.ac.channelzID, "acBalancerWrapper: UpdateAddresses: failed to newAddrConn: %v", err)
 			return
 		}
-		acbw.ac = ac
+		acbw.ac = newAC
-		ac.mu.Lock()
+		newAC.mu.Lock()
-		ac.acbw = acbw
+		newAC.acbw = acbw
-		ac.mu.Unlock()
+		newAC.mu.Unlock()
 		if acState != connectivity.Idle {
-			ac.connect()
+			go newAC.connect()
 		}
 	}
 }
@@ -257,7 +406,7 @@ func (acbw *acBalancerWrapper) UpdateAddresses(addrs []resolver.Address) {
 func (acbw *acBalancerWrapper) Connect() {
 	acbw.mu.Lock()
 	defer acbw.mu.Unlock()
-	acbw.ac.connect()
+	go acbw.ac.connect()
 }
 
 func (acbw *acBalancerWrapper) getAddrConn() *addrConn {

vendor/google.golang.org/grpc/channelz/channelz.go

@@ -0,0 +1,36 @@
+/*
+ *
+ * Copyright 2020 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// Package channelz exports internals of the channelz implementation as required
+// by other gRPC packages.
+//
+// The implementation of the channelz spec as defined in
+// https://github.com/grpc/proposal/blob/master/A14-channelz.md, is provided by
+// the `internal/channelz` package.
+//
+// Experimental
+//
+// Notice: All APIs in this package are experimental and may be removed in a
+// later release.
+package channelz
+
+import "google.golang.org/grpc/internal/channelz"
+
+// Identifier is an opaque identifier which uniquely identifies an entity in the
+// channelz database.
+type Identifier = channelz.Identifier

vendor/google.golang.org/grpc/connectivity/connectivity.go

@@ -18,7 +18,6 @@
 
 // Package connectivity defines connectivity semantics.
 // For details, see https://github.com/grpc/grpc/blob/master/doc/connectivity-semantics-and-api.md.
-// All APIs in this package are experimental.
 package connectivity
 
 import (
@@ -45,7 +44,7 @@ func (s State) String() string {
 		return "SHUTDOWN"
 	default:
 		logger.Errorf("unknown connectivity state: %d", s)
-		return "Invalid-State"
+		return "INVALID_STATE"
 	}
 }
 
@@ -61,3 +60,35 @@ const (
 	// Shutdown indicates the ClientConn has started shutting down.
 	Shutdown
 )
+
+// ServingMode indicates the current mode of operation of the server.
+//
+// Only xDS enabled gRPC servers currently report their serving mode.
+type ServingMode int
+
+const (
+	// ServingModeStarting indicates that the server is starting up.
+	ServingModeStarting ServingMode = iota
+	// ServingModeServing indicates that the server contains all required
+	// configuration and is serving RPCs.
+	ServingModeServing
+	// ServingModeNotServing indicates that the server is not accepting new
+	// connections. Existing connections will be closed gracefully, allowing
+	// in-progress RPCs to complete. A server enters this mode when it does not
+	// contain the required configuration to serve RPCs.
+	ServingModeNotServing
+)
+
+func (s ServingMode) String() string {
+	switch s {
+	case ServingModeStarting:
+		return "STARTING"
+	case ServingModeServing:
+		return "SERVING"
+	case ServingModeNotServing:
+		return "NOT_SERVING"
+	default:
+		logger.Errorf("unknown serving mode: %d", s)
+		return "INVALID_MODE"
+	}
+}

vendor/google.golang.org/grpc/credentials/credentials.go

@@ -140,6 +140,11 @@ type TransportCredentials interface {
 	// Additionally, ClientHandshakeInfo data will be available via the context
 	// passed to this call.
 	//
+	// The second argument to this method is the `:authority` header value used
+	// while creating new streams on this connection after authentication
+	// succeeds. Implementations must use this as the server name during the
+	// authentication handshake.
+	//
 	// If the returned net.Conn is closed, it MUST close the net.Conn provided.
 	ClientHandshake(context.Context, string, net.Conn) (net.Conn, AuthInfo, error)
 	// ServerHandshake does the authentication handshake for servers. It returns
@@ -153,9 +158,13 @@ type TransportCredentials interface {
 	Info() ProtocolInfo
 	// Clone makes a copy of this TransportCredentials.
 	Clone() TransportCredentials
-	// OverrideServerName overrides the server name used to verify the hostname on the returned certificates from the server.
+	// OverrideServerName specifies the value used for the following:
-	// gRPC internals also use it to override the virtual hosting name if it is set.
+	// - verifying the hostname on the returned certificates
-	// It must be called before dialing. Currently, this is only used by grpclb.
+	// - as SNI in the client's handshake to support virtual hosting
+	// - as the value for `:authority` header at stream creation time
+	//
+	// Deprecated: use grpc.WithAuthority instead. Will be supported
+	// throughout 1.x.
 	OverrideServerName(string) error
 }
 
@@ -169,8 +178,18 @@ type TransportCredentials interface {
 //
 // This API is experimental.
 type Bundle interface {
+	// TransportCredentials returns the transport credentials from the Bundle.
+	//
+	// Implementations must return non-nil transport credentials. If transport
+	// security is not needed by the Bundle, implementations may choose to
+	// return insecure.NewCredentials().
 	TransportCredentials() TransportCredentials
+
+	// PerRPCCredentials returns the per-RPC credentials from the Bundle.
+	//
+	// May be nil if per-RPC credentials are not needed.
 	PerRPCCredentials() PerRPCCredentials
+
 	// NewWithMode should make a copy of Bundle, and switch mode. Modifying the
 	// existing Bundle may cause races.
 	//

vendor/google.golang.org/grpc/credentials/go12.go

@@ -1,30 +0,0 @@
-// +build go1.12
-
-/*
- *
- * Copyright 2019 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package credentials
-
-import "crypto/tls"
-
-// This init function adds cipher suite constants only defined in Go 1.12.
-func init() {
-	cipherSuiteLookup[tls.TLS_AES_128_GCM_SHA256] = "TLS_AES_128_GCM_SHA256"
-	cipherSuiteLookup[tls.TLS_AES_256_GCM_SHA384] = "TLS_AES_256_GCM_SHA384"
-	cipherSuiteLookup[tls.TLS_CHACHA20_POLY1305_SHA256] = "TLS_CHACHA20_POLY1305_SHA256"
-}

vendor/google.golang.org/grpc/credentials/insecure/insecure.go

@@ -0,0 +1,98 @@
+/*
+ *
+ * Copyright 2020 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// Package insecure provides an implementation of the
+// credentials.TransportCredentials interface which disables transport security.
+package insecure
+
+import (
+	"context"
+	"net"
+
+	"google.golang.org/grpc/credentials"
+)
+
+// NewCredentials returns a credentials which disables transport security.
+//
+// Note that using this credentials with per-RPC credentials which require
+// transport security is incompatible and will cause grpc.Dial() to fail.
+func NewCredentials() credentials.TransportCredentials {
+	return insecureTC{}
+}
+
+// insecureTC implements the insecure transport credentials. The handshake
+// methods simply return the passed in net.Conn and set the security level to
+// NoSecurity.
+type insecureTC struct{}
+
+func (insecureTC) ClientHandshake(ctx context.Context, _ string, conn net.Conn) (net.Conn, credentials.AuthInfo, error) {
+	return conn, info{credentials.CommonAuthInfo{SecurityLevel: credentials.NoSecurity}}, nil
+}
+
+func (insecureTC) ServerHandshake(conn net.Conn) (net.Conn, credentials.AuthInfo, error) {
+	return conn, info{credentials.CommonAuthInfo{SecurityLevel: credentials.NoSecurity}}, nil
+}
+
+func (insecureTC) Info() credentials.ProtocolInfo {
+	return credentials.ProtocolInfo{SecurityProtocol: "insecure"}
+}
+
+func (insecureTC) Clone() credentials.TransportCredentials {
+	return insecureTC{}
+}
+
+func (insecureTC) OverrideServerName(string) error {
+	return nil
+}
+
+// info contains the auth information for an insecure connection.
+// It implements the AuthInfo interface.
+type info struct {
+	credentials.CommonAuthInfo
+}
+
+// AuthType returns the type of info as a string.
+func (info) AuthType() string {
+	return "insecure"
+}
+
+// insecureBundle implements an insecure bundle.
+// An insecure bundle provides a thin wrapper around insecureTC to support
+// the credentials.Bundle interface.
+type insecureBundle struct{}
+
+// NewBundle returns a bundle with disabled transport security and no per rpc credential.
+func NewBundle() credentials.Bundle {
+	return insecureBundle{}
+}
+
+// NewWithMode returns a new insecure Bundle. The mode is ignored.
+func (insecureBundle) NewWithMode(string) (credentials.Bundle, error) {
+	return insecureBundle{}, nil
+}
+
+// PerRPCCredentials returns an nil implementation as insecure
+// bundle does not support a per rpc credential.
+func (insecureBundle) PerRPCCredentials() credentials.PerRPCCredentials {
+	return nil
+}
+
+// TransportCredentials returns the underlying insecure transport credential.
+func (insecureBundle) TransportCredentials() credentials.TransportCredentials {
+	return NewCredentials()
+}

vendor/google.golang.org/grpc/credentials/tls.go

@@ -230,4 +230,7 @@ var cipherSuiteLookup = map[uint16]string{
 	tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256:   "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",
 	tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305:    "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305",
 	tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305:  "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305",
+	tls.TLS_AES_128_GCM_SHA256:                  "TLS_AES_128_GCM_SHA256",
+	tls.TLS_AES_256_GCM_SHA384:                  "TLS_AES_256_GCM_SHA384",
+	tls.TLS_CHACHA20_POLY1305_SHA256:            "TLS_CHACHA20_POLY1305_SHA256",
 }

vendor/google.golang.org/grpc/dialoptions.go

@@ -20,16 +20,15 @@ package grpc
 
 import (
 	"context"
-	"fmt"
 	"net"
 	"time"
 
 	"google.golang.org/grpc/backoff"
-	"google.golang.org/grpc/balancer"
+	"google.golang.org/grpc/channelz"
 	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/internal"
 	internalbackoff "google.golang.org/grpc/internal/backoff"
-	"google.golang.org/grpc/internal/envconfig"
 	"google.golang.org/grpc/internal/transport"
 	"google.golang.org/grpc/keepalive"
 	"google.golang.org/grpc/resolver"
@@ -45,20 +44,17 @@ type dialOptions struct {
 	chainUnaryInts  []UnaryClientInterceptor
 	chainStreamInts []StreamClientInterceptor
 
-	cp              Compressor
+	cp                          Compressor
-	dc              Decompressor
+	dc                          Decompressor
-	bs              internalbackoff.Strategy
+	bs                          internalbackoff.Strategy
-	block           bool
+	block                       bool
-	returnLastError bool
+	returnLastError             bool
-	insecure        bool
+	timeout                     time.Duration
-	timeout         time.Duration
+	scChan                      <-chan ServiceConfig
-	scChan          <-chan ServiceConfig
+	authority                   string
-	authority       string
+	copts                       transport.ConnectOptions
-	copts           transport.ConnectOptions
+	callOptions                 []CallOption
-	callOptions     []CallOption
+	channelzParentID            *channelz.Identifier
-	// This is used by WithBalancerName dial option.
-	balancerBuilder             balancer.Builder
-	channelzParentID            int64
 	disableServiceConfig        bool
 	disableRetry                bool
 	disableHealthCheck          bool
@@ -196,25 +192,6 @@ func WithDecompressor(dc Decompressor) DialOption {
 	})
 }
 
-// WithBalancerName sets the balancer that the ClientConn will be initialized
-// with. Balancer registered with balancerName will be used. This function
-// panics if no balancer was registered by balancerName.
-//
-// The balancer cannot be overridden by balancer option specified by service
-// config.
-//
-// Deprecated: use WithDefaultServiceConfig and WithDisableServiceConfig
-// instead.  Will be removed in a future 1.x release.
-func WithBalancerName(balancerName string) DialOption {
-	builder := balancer.Get(balancerName)
-	if builder == nil {
-		panic(fmt.Sprintf("grpc.WithBalancerName: no balancer is registered for name %v", balancerName))
-	}
-	return newFuncDialOption(func(o *dialOptions) {
-		o.balancerBuilder = builder
-	})
-}
-
 // WithServiceConfig returns a DialOption which has a channel to read the
 // service configuration.
 //
@@ -228,18 +205,14 @@ func WithServiceConfig(c <-chan ServiceConfig) DialOption {
 	})
 }
 
-// WithConnectParams configures the dialer to use the provided ConnectParams.
+// WithConnectParams configures the ClientConn to use the provided ConnectParams
+// for creating and maintaining connections to servers.
 //
 // The backoff configuration specified as part of the ConnectParams overrides
 // all defaults specified in
 // https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md. Consider
 // using the backoff.DefaultConfig as a base, in cases where you want to
 // override only a subset of the backoff configuration.
-//
-// Experimental
-//
-// Notice: This API is EXPERIMENTAL and may be changed or removed in a
-// later release.
 func WithConnectParams(p ConnectParams) DialOption {
 	return newFuncDialOption(func(o *dialOptions) {
 		o.bs = internalbackoff.Exponential{Config: p.Backoff}
@@ -277,7 +250,7 @@ func withBackoff(bs internalbackoff.Strategy) DialOption {
 	})
 }
 
-// WithBlock returns a DialOption which makes caller of Dial blocks until the
+// WithBlock returns a DialOption which makes callers of Dial block until the
 // underlying connection is up. Without this, Dial returns immediately and
 // connecting the server happens in background.
 func WithBlock() DialOption {
@@ -303,11 +276,17 @@ func WithReturnConnectionError() DialOption {
 }
 
 // WithInsecure returns a DialOption which disables transport security for this
-// ClientConn. Note that transport security is required unless WithInsecure is
+// ClientConn. Under the hood, it uses insecure.NewCredentials().
-// set.
+//
+// Note that using this DialOption with per-RPC credentials (through
+// WithCredentialsBundle or WithPerRPCCredentials) which require transport
+// security is incompatible and will cause grpc.Dial() to fail.
+//
+// Deprecated: use WithTransportCredentials and insecure.NewCredentials()
+// instead. Will be supported throughout 1.x.
 func WithInsecure() DialOption {
 	return newFuncDialOption(func(o *dialOptions) {
-		o.insecure = true
+		o.copts.TransportCredentials = insecure.NewCredentials()
 	})
 }
 
@@ -482,8 +461,7 @@ func WithChainStreamInterceptor(interceptors ...StreamClientInterceptor) DialOpt
 }
 
 // WithAuthority returns a DialOption that specifies the value to be used as the
-// :authority pseudo-header. This value only works with WithInsecure and has no
+// :authority pseudo-header and as the server name in authentication handshake.
-// effect if TransportCredentials are present.
 func WithAuthority(a string) DialOption {
 	return newFuncDialOption(func(o *dialOptions) {
 		o.authority = a
@@ -498,7 +476,7 @@ func WithAuthority(a string) DialOption {
 //
 // Notice: This API is EXPERIMENTAL and may be changed or removed in a
 // later release.
-func WithChannelzParentID(id int64) DialOption {
+func WithChannelzParentID(id *channelz.Identifier) DialOption {
 	return newFuncDialOption(func(o *dialOptions) {
 		o.channelzParentID = id
 	})
@@ -519,14 +497,16 @@ func WithDisableServiceConfig() DialOption {
 // WithDefaultServiceConfig returns a DialOption that configures the default
 // service config, which will be used in cases where:
 //
-// 1. WithDisableServiceConfig is also used.
+// 1. WithDisableServiceConfig is also used, or
-// 2. Resolver does not return a service config or if the resolver returns an
-//    invalid service config.
 //
-// Experimental
+// 2. The name resolver does not provide a service config or provides an
+// invalid service config.
 //
-// Notice: This API is EXPERIMENTAL and may be changed or removed in a
+// The parameter s is the JSON representation of the default service config.
-// later release.
+// For more information about service configs, see:
+// https://github.com/grpc/grpc/blob/master/doc/service_config.md
+// For a simple example of usage, see:
+// examples/features/load_balancing/client/main.go
 func WithDefaultServiceConfig(s string) DialOption {
 	return newFuncDialOption(func(o *dialOptions) {
 		o.defaultServiceConfigRawJSON = &s
@@ -538,14 +518,8 @@ func WithDefaultServiceConfig(s string) DialOption {
 // will happen automatically if no data is written to the wire or if the RPC is
 // unprocessed by the remote server.
 //
-// Retry support is currently disabled by default, but will be enabled by
+// Retry support is currently enabled by default, but may be disabled by
-// default in the future.  Until then, it may be enabled by setting the
+// setting the environment variable "GRPC_GO_RETRY" to "off".
-// environment variable "GRPC_GO_RETRY" to "on".
-//
-// Experimental
-//
-// Notice: This API is EXPERIMENTAL and may be changed or removed in a
-// later release.
 func WithDisableRetry() DialOption {
 	return newFuncDialOption(func(o *dialOptions) {
 		o.disableRetry = true
@@ -585,7 +559,6 @@ func withHealthCheckFunc(f internal.HealthChecker) DialOption {
 
 func defaultDialOptions() dialOptions {
 	return dialOptions{
-		disableRetry:    !envconfig.Retry,
 		healthCheckFunc: internal.HealthCheckFunc,
 		copts: transport.ConnectOptions{
 			WriteBufferSize: defaultWriteBufSize,

vendor/google.golang.org/grpc/encoding/encoding.go

@@ -108,7 +108,7 @@ var registeredCodecs = make(map[string]Codec)
 // more details.
 //
 // NOTE: this function must only be called during initialization time (i.e. in
-// an init() function), and is not thread-safe.  If multiple Compressors are
+// an init() function), and is not thread-safe.  If multiple Codecs are
 // registered with the same name, the one registered last will take effect.
 func RegisterCodec(codec Codec) {
 	if codec == nil {

vendor/google.golang.org/grpc/grpclog/loggerv2.go

@@ -19,11 +19,14 @@
 package grpclog
 
 import (
+	"encoding/json"
+	"fmt"
 	"io"
 	"io/ioutil"
 	"log"
 	"os"
 	"strconv"
+	"strings"
 
 	"google.golang.org/grpc/internal/grpclog"
 )
@@ -95,8 +98,9 @@ var severityName = []string{
 
 // loggerT is the default logger used by grpclog.
 type loggerT struct {
-	m []*log.Logger
+	m          []*log.Logger
-	v int
+	v          int
+	jsonFormat bool
 }
 
 // NewLoggerV2 creates a loggerV2 with the provided writers.
@@ -105,19 +109,32 @@ type loggerT struct {
 // Warning logs will be written to warningW and infoW.
 // Info logs will be written to infoW.
 func NewLoggerV2(infoW, warningW, errorW io.Writer) LoggerV2 {
-	return NewLoggerV2WithVerbosity(infoW, warningW, errorW, 0)
+	return newLoggerV2WithConfig(infoW, warningW, errorW, loggerV2Config{})
 }
 
 // NewLoggerV2WithVerbosity creates a loggerV2 with the provided writers and
 // verbosity level.
 func NewLoggerV2WithVerbosity(infoW, warningW, errorW io.Writer, v int) LoggerV2 {
+	return newLoggerV2WithConfig(infoW, warningW, errorW, loggerV2Config{verbose: v})
+}
+
+type loggerV2Config struct {
+	verbose    int
+	jsonFormat bool
+}
+
+func newLoggerV2WithConfig(infoW, warningW, errorW io.Writer, c loggerV2Config) LoggerV2 {
 	var m []*log.Logger
-	m = append(m, log.New(infoW, severityName[infoLog]+": ", log.LstdFlags))
+	flag := log.LstdFlags
-	m = append(m, log.New(io.MultiWriter(infoW, warningW), severityName[warningLog]+": ", log.LstdFlags))
+	if c.jsonFormat {
+		flag = 0
+	}
+	m = append(m, log.New(infoW, "", flag))
+	m = append(m, log.New(io.MultiWriter(infoW, warningW), "", flag))
 	ew := io.MultiWriter(infoW, warningW, errorW) // ew will be used for error and fatal.
-	m = append(m, log.New(ew, severityName[errorLog]+": ", log.LstdFlags))
+	m = append(m, log.New(ew, "", flag))
-	m = append(m, log.New(ew, severityName[fatalLog]+": ", log.LstdFlags))
+	m = append(m, log.New(ew, "", flag))
-	return &loggerT{m: m, v: v}
+	return &loggerT{m: m, v: c.verbose, jsonFormat: c.jsonFormat}
 }
 
 // newLoggerV2 creates a loggerV2 to be used as default logger.
@@ -142,58 +159,79 @@ func newLoggerV2() LoggerV2 {
 	if vl, err := strconv.Atoi(vLevel); err == nil {
 		v = vl
 	}
-	return NewLoggerV2WithVerbosity(infoW, warningW, errorW, v)
+
+	jsonFormat := strings.EqualFold(os.Getenv("GRPC_GO_LOG_FORMATTER"), "json")
+
+	return newLoggerV2WithConfig(infoW, warningW, errorW, loggerV2Config{
+		verbose:    v,
+		jsonFormat: jsonFormat,
+	})
+}
+
+func (g *loggerT) output(severity int, s string) {
+	sevStr := severityName[severity]
+	if !g.jsonFormat {
+		g.m[severity].Output(2, fmt.Sprintf("%v: %v", sevStr, s))
+		return
+	}
+	// TODO: we can also include the logging component, but that needs more
+	// (API) changes.
+	b, _ := json.Marshal(map[string]string{
+		"severity": sevStr,
+		"message":  s,
+	})
+	g.m[severity].Output(2, string(b))
 }
 
 func (g *loggerT) Info(args ...interface{}) {
-	g.m[infoLog].Print(args...)
+	g.output(infoLog, fmt.Sprint(args...))
 }
 
 func (g *loggerT) Infoln(args ...interface{}) {
-	g.m[infoLog].Println(args...)
+	g.output(infoLog, fmt.Sprintln(args...))
 }
 
 func (g *loggerT) Infof(format string, args ...interface{}) {
-	g.m[infoLog].Printf(format, args...)
+	g.output(infoLog, fmt.Sprintf(format, args...))
 }
 
 func (g *loggerT) Warning(args ...interface{}) {
-	g.m[warningLog].Print(args...)
+	g.output(warningLog, fmt.Sprint(args...))
 }
 
 func (g *loggerT) Warningln(args ...interface{}) {
-	g.m[warningLog].Println(args...)
+	g.output(warningLog, fmt.Sprintln(args...))
 }
 
 func (g *loggerT) Warningf(format string, args ...interface{}) {
-	g.m[warningLog].Printf(format, args...)
+	g.output(warningLog, fmt.Sprintf(format, args...))
 }
 
 func (g *loggerT) Error(args ...interface{}) {
-	g.m[errorLog].Print(args...)
+	g.output(errorLog, fmt.Sprint(args...))
 }
 
 func (g *loggerT) Errorln(args ...interface{}) {
-	g.m[errorLog].Println(args...)
+	g.output(errorLog, fmt.Sprintln(args...))
 }
 
 func (g *loggerT) Errorf(format string, args ...interface{}) {
-	g.m[errorLog].Printf(format, args...)
+	g.output(errorLog, fmt.Sprintf(format, args...))
 }
 
 func (g *loggerT) Fatal(args ...interface{}) {
-	g.m[fatalLog].Fatal(args...)
+	g.output(fatalLog, fmt.Sprint(args...))
-	// No need to call os.Exit() again because log.Logger.Fatal() calls os.Exit().
+	os.Exit(1)
 }
 
 func (g *loggerT) Fatalln(args ...interface{}) {
-	g.m[fatalLog].Fatalln(args...)
+	g.output(fatalLog, fmt.Sprintln(args...))
-	// No need to call os.Exit() again because log.Logger.Fatal() calls os.Exit().
+	os.Exit(1)
 }
 
 func (g *loggerT) Fatalf(format string, args ...interface{}) {
-	g.m[fatalLog].Fatalf(format, args...)
+	g.output(fatalLog, fmt.Sprintf(format, args...))
-	// No need to call os.Exit() again because log.Logger.Fatal() calls os.Exit().
+	os.Exit(1)
 }
 
 func (g *loggerT) V(l int) bool {
@@ -210,12 +248,12 @@ func (g *loggerT) V(l int) bool {
 // later release.
 type DepthLoggerV2 interface {
 	LoggerV2
-	// InfoDepth logs to INFO log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// InfoDepth logs to INFO log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	InfoDepth(depth int, args ...interface{})
-	// WarningDepth logs to WARNING log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// WarningDepth logs to WARNING log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	WarningDepth(depth int, args ...interface{})
-	// ErrorDetph logs to ERROR log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// ErrorDepth logs to ERROR log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	ErrorDepth(depth int, args ...interface{})
-	// FatalDepth logs to FATAL log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// FatalDepth logs to FATAL log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	FatalDepth(depth int, args ...interface{})
 }

vendor/google.golang.org/grpc/install_gae.sh

@@ -1,6 +0,0 @@
-#!/bin/bash
-
-TMP=$(mktemp -d /tmp/sdk.XXX) \
-&& curl -o $TMP.zip "https://storage.googleapis.com/appengine-sdks/featured/go_appengine_sdk_linux_amd64-1.9.68.zip" \
-&& unzip -q $TMP.zip -d $TMP \
-&& export PATH="$PATH:$TMP/go_appengine"

vendor/google.golang.org/grpc/interceptor.go

@@ -72,9 +72,12 @@ type UnaryServerInfo struct {
 }
 
 // UnaryHandler defines the handler invoked by UnaryServerInterceptor to complete the normal
-// execution of a unary RPC. If a UnaryHandler returns an error, it should be produced by the
+// execution of a unary RPC.
-// status package, or else gRPC will use codes.Unknown as the status code and err.Error() as
+//
-// the status message of the RPC.
+// If a UnaryHandler returns an error, it should either be produced by the
+// status package, or be one of the context errors. Otherwise, gRPC will use
+// codes.Unknown as the status code and err.Error() as the status message of the
+// RPC.
 type UnaryHandler func(ctx context.Context, req interface{}) (interface{}, error)
 
 // UnaryServerInterceptor provides a hook to intercept the execution of a unary RPC on the server. info

vendor/google.golang.org/grpc/internal/balancer/gracefulswitch/gracefulswitch.go

@@ -0,0 +1,382 @@
+/*
+ *
+ * Copyright 2022 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// Package gracefulswitch implements a graceful switch load balancer.
+package gracefulswitch
+
+import (
+	"errors"
+	"fmt"
+	"sync"
+
+	"google.golang.org/grpc/balancer"
+	"google.golang.org/grpc/balancer/base"
+	"google.golang.org/grpc/connectivity"
+	"google.golang.org/grpc/resolver"
+)
+
+var errBalancerClosed = errors.New("gracefulSwitchBalancer is closed")
+var _ balancer.Balancer = (*Balancer)(nil)
+
+// NewBalancer returns a graceful switch Balancer.
+func NewBalancer(cc balancer.ClientConn, opts balancer.BuildOptions) *Balancer {
+	return &Balancer{
+		cc:    cc,
+		bOpts: opts,
+	}
+}
+
+// Balancer is a utility to gracefully switch from one balancer to
+// a new balancer. It implements the balancer.Balancer interface.
+type Balancer struct {
+	bOpts balancer.BuildOptions
+	cc    balancer.ClientConn
+
+	// mu protects the following fields and all fields within balancerCurrent
+	// and balancerPending. mu does not need to be held when calling into the
+	// child balancers, as all calls into these children happen only as a direct
+	// result of a call into the gracefulSwitchBalancer, which are also
+	// guaranteed to be synchronous. There is one exception: an UpdateState call
+	// from a child balancer when current and pending are populated can lead to
+	// calling Close() on the current. To prevent that racing with an
+	// UpdateSubConnState from the channel, we hold currentMu during Close and
+	// UpdateSubConnState calls.
+	mu              sync.Mutex
+	balancerCurrent *balancerWrapper
+	balancerPending *balancerWrapper
+	closed          bool // set to true when this balancer is closed
+
+	// currentMu must be locked before mu. This mutex guards against this
+	// sequence of events: UpdateSubConnState() called, finds the
+	// balancerCurrent, gives up lock, updateState comes in, causes Close() on
+	// balancerCurrent before the UpdateSubConnState is called on the
+	// balancerCurrent.
+	currentMu sync.Mutex
+}
+
+// swap swaps out the current lb with the pending lb and updates the ClientConn.
+// The caller must hold gsb.mu.
+func (gsb *Balancer) swap() {
+	gsb.cc.UpdateState(gsb.balancerPending.lastState)
+	cur := gsb.balancerCurrent
+	gsb.balancerCurrent = gsb.balancerPending
+	gsb.balancerPending = nil
+	go func() {
+		gsb.currentMu.Lock()
+		defer gsb.currentMu.Unlock()
+		cur.Close()
+	}()
+}
+
+// Helper function that checks if the balancer passed in is current or pending.
+// The caller must hold gsb.mu.
+func (gsb *Balancer) balancerCurrentOrPending(bw *balancerWrapper) bool {
+	return bw == gsb.balancerCurrent || bw == gsb.balancerPending
+}
+
+// SwitchTo initializes the graceful switch process, which completes based on
+// connectivity state changes on the current/pending balancer. Thus, the switch
+// process is not complete when this method returns. This method must be called
+// synchronously alongside the rest of the balancer.Balancer methods this
+// Graceful Switch Balancer implements.
+func (gsb *Balancer) SwitchTo(builder balancer.Builder) error {
+	gsb.mu.Lock()
+	if gsb.closed {
+		gsb.mu.Unlock()
+		return errBalancerClosed
+	}
+	bw := &balancerWrapper{
+		gsb: gsb,
+		lastState: balancer.State{
+			ConnectivityState: connectivity.Connecting,
+			Picker:            base.NewErrPicker(balancer.ErrNoSubConnAvailable),
+		},
+		subconns: make(map[balancer.SubConn]bool),
+	}
+	balToClose := gsb.balancerPending // nil if there is no pending balancer
+	if gsb.balancerCurrent == nil {
+		gsb.balancerCurrent = bw
+	} else {
+		gsb.balancerPending = bw
+	}
+	gsb.mu.Unlock()
+	balToClose.Close()
+	// This function takes a builder instead of a balancer because builder.Build
+	// can call back inline, and this utility needs to handle the callbacks.
+	newBalancer := builder.Build(bw, gsb.bOpts)
+	if newBalancer == nil {
+		// This is illegal and should never happen; we clear the balancerWrapper
+		// we were constructing if it happens to avoid a potential panic.
+		gsb.mu.Lock()
+		if gsb.balancerPending != nil {
+			gsb.balancerPending = nil
+		} else {
+			gsb.balancerCurrent = nil
+		}
+		gsb.mu.Unlock()
+		return balancer.ErrBadResolverState
+	}
+
+	// This write doesn't need to take gsb.mu because this field never gets read
+	// or written to on any calls from the current or pending. Calls from grpc
+	// to this balancer are guaranteed to be called synchronously, so this
+	// bw.Balancer field will never be forwarded to until this SwitchTo()
+	// function returns.
+	bw.Balancer = newBalancer
+	return nil
+}
+
+// Returns nil if the graceful switch balancer is closed.
+func (gsb *Balancer) latestBalancer() *balancerWrapper {
+	gsb.mu.Lock()
+	defer gsb.mu.Unlock()
+	if gsb.balancerPending != nil {
+		return gsb.balancerPending
+	}
+	return gsb.balancerCurrent
+}
+
+// UpdateClientConnState forwards the update to the latest balancer created.
+func (gsb *Balancer) UpdateClientConnState(state balancer.ClientConnState) error {
+	// The resolver data is only relevant to the most recent LB Policy.
+	balToUpdate := gsb.latestBalancer()
+	if balToUpdate == nil {
+		return errBalancerClosed
+	}
+	// Perform this call without gsb.mu to prevent deadlocks if the child calls
+	// back into the channel. The latest balancer can never be closed during a
+	// call from the channel, even without gsb.mu held.
+	return balToUpdate.UpdateClientConnState(state)
+}
+
+// ResolverError forwards the error to the latest balancer created.
+func (gsb *Balancer) ResolverError(err error) {
+	// The resolver data is only relevant to the most recent LB Policy.
+	balToUpdate := gsb.latestBalancer()
+	if balToUpdate == nil {
+		return
+	}
+	// Perform this call without gsb.mu to prevent deadlocks if the child calls
+	// back into the channel. The latest balancer can never be closed during a
+	// call from the channel, even without gsb.mu held.
+	balToUpdate.ResolverError(err)
+}
+
+// ExitIdle forwards the call to the latest balancer created.
+//
+// If the latest balancer does not support ExitIdle, the subConns are
+// re-connected to manually.
+func (gsb *Balancer) ExitIdle() {
+	balToUpdate := gsb.latestBalancer()
+	if balToUpdate == nil {
+		return
+	}
+	// There is no need to protect this read with a mutex, as the write to the
+	// Balancer field happens in SwitchTo, which completes before this can be
+	// called.
+	if ei, ok := balToUpdate.Balancer.(balancer.ExitIdler); ok {
+		ei.ExitIdle()
+		return
+	}
+	for sc := range balToUpdate.subconns {
+		sc.Connect()
+	}
+}
+
+// UpdateSubConnState forwards the update to the appropriate child.
+func (gsb *Balancer) UpdateSubConnState(sc balancer.SubConn, state balancer.SubConnState) {
+	gsb.currentMu.Lock()
+	defer gsb.currentMu.Unlock()
+	gsb.mu.Lock()
+	// Forward update to the appropriate child.  Even if there is a pending
+	// balancer, the current balancer should continue to get SubConn updates to
+	// maintain the proper state while the pending is still connecting.
+	var balToUpdate *balancerWrapper
+	if gsb.balancerCurrent != nil && gsb.balancerCurrent.subconns[sc] {
+		balToUpdate = gsb.balancerCurrent
+	} else if gsb.balancerPending != nil && gsb.balancerPending.subconns[sc] {
+		balToUpdate = gsb.balancerPending
+	}
+	gsb.mu.Unlock()
+	if balToUpdate == nil {
+		// SubConn belonged to a stale lb policy that has not yet fully closed,
+		// or the balancer was already closed.
+		return
+	}
+	balToUpdate.UpdateSubConnState(sc, state)
+}
+
+// Close closes any active child balancers.
+func (gsb *Balancer) Close() {
+	gsb.mu.Lock()
+	gsb.closed = true
+	currentBalancerToClose := gsb.balancerCurrent
+	gsb.balancerCurrent = nil
+	pendingBalancerToClose := gsb.balancerPending
+	gsb.balancerPending = nil
+	gsb.mu.Unlock()
+
+	currentBalancerToClose.Close()
+	pendingBalancerToClose.Close()
+}
+
+// balancerWrapper wraps a balancer.Balancer, and overrides some Balancer
+// methods to help cleanup SubConns created by the wrapped balancer.
+//
+// It implements the balancer.ClientConn interface and is passed down in that
+// capacity to the wrapped balancer. It maintains a set of subConns created by
+// the wrapped balancer and calls from the latter to create/update/remove
+// SubConns update this set before being forwarded to the parent ClientConn.
+// State updates from the wrapped balancer can result in invocation of the
+// graceful switch logic.
+type balancerWrapper struct {
+	balancer.Balancer
+	gsb *Balancer
+
+	lastState balancer.State
+	subconns  map[balancer.SubConn]bool // subconns created by this balancer
+}
+
+func (bw *balancerWrapper) UpdateSubConnState(sc balancer.SubConn, state balancer.SubConnState) {
+	if state.ConnectivityState == connectivity.Shutdown {
+		bw.gsb.mu.Lock()
+		delete(bw.subconns, sc)
+		bw.gsb.mu.Unlock()
+	}
+	// There is no need to protect this read with a mutex, as the write to the
+	// Balancer field happens in SwitchTo, which completes before this can be
+	// called.
+	bw.Balancer.UpdateSubConnState(sc, state)
+}
+
+// Close closes the underlying LB policy and removes the subconns it created. bw
+// must not be referenced via balancerCurrent or balancerPending in gsb when
+// called. gsb.mu must not be held.  Does not panic with a nil receiver.
+func (bw *balancerWrapper) Close() {
+	// before Close is called.
+	if bw == nil {
+		return
+	}
+	// There is no need to protect this read with a mutex, as Close() is
+	// impossible to be called concurrently with the write in SwitchTo(). The
+	// callsites of Close() for this balancer in Graceful Switch Balancer will
+	// never be called until SwitchTo() returns.
+	bw.Balancer.Close()
+	bw.gsb.mu.Lock()
+	for sc := range bw.subconns {
+		bw.gsb.cc.RemoveSubConn(sc)
+	}
+	bw.gsb.mu.Unlock()
+}
+
+func (bw *balancerWrapper) UpdateState(state balancer.State) {
+	// Hold the mutex for this entire call to ensure it cannot occur
+	// concurrently with other updateState() calls. This causes updates to
+	// lastState and calls to cc.UpdateState to happen atomically.
+	bw.gsb.mu.Lock()
+	defer bw.gsb.mu.Unlock()
+	bw.lastState = state
+
+	if !bw.gsb.balancerCurrentOrPending(bw) {
+		return
+	}
+
+	if bw == bw.gsb.balancerCurrent {
+		// In the case that the current balancer exits READY, and there is a pending
+		// balancer, you can forward the pending balancer's cached State up to
+		// ClientConn and swap the pending into the current. This is because there
+		// is no reason to gracefully switch from and keep using the old policy as
+		// the ClientConn is not connected to any backends.
+		if state.ConnectivityState != connectivity.Ready && bw.gsb.balancerPending != nil {
+			bw.gsb.swap()
+			return
+		}
+		// Even if there is a pending balancer waiting to be gracefully switched to,
+		// continue to forward current balancer updates to the Client Conn. Ignoring
+		// state + picker from the current would cause undefined behavior/cause the
+		// system to behave incorrectly from the current LB policies perspective.
+		// Also, the current LB is still being used by grpc to choose SubConns per
+		// RPC, and thus should use the most updated form of the current balancer.
+		bw.gsb.cc.UpdateState(state)
+		return
+	}
+	// This method is now dealing with a state update from the pending balancer.
+	// If the current balancer is currently in a state other than READY, the new
+	// policy can be swapped into place immediately. This is because there is no
+	// reason to gracefully switch from and keep using the old policy as the
+	// ClientConn is not connected to any backends.
+	if state.ConnectivityState != connectivity.Connecting || bw.gsb.balancerCurrent.lastState.ConnectivityState != connectivity.Ready {
+		bw.gsb.swap()
+	}
+}
+
+func (bw *balancerWrapper) NewSubConn(addrs []resolver.Address, opts balancer.NewSubConnOptions) (balancer.SubConn, error) {
+	bw.gsb.mu.Lock()
+	if !bw.gsb.balancerCurrentOrPending(bw) {
+		bw.gsb.mu.Unlock()
+		return nil, fmt.Errorf("%T at address %p that called NewSubConn is deleted", bw, bw)
+	}
+	bw.gsb.mu.Unlock()
+
+	sc, err := bw.gsb.cc.NewSubConn(addrs, opts)
+	if err != nil {
+		return nil, err
+	}
+	bw.gsb.mu.Lock()
+	if !bw.gsb.balancerCurrentOrPending(bw) { // balancer was closed during this call
+		bw.gsb.cc.RemoveSubConn(sc)
+		bw.gsb.mu.Unlock()
+		return nil, fmt.Errorf("%T at address %p that called NewSubConn is deleted", bw, bw)
+	}
+	bw.subconns[sc] = true
+	bw.gsb.mu.Unlock()
+	return sc, nil
+}
+
+func (bw *balancerWrapper) ResolveNow(opts resolver.ResolveNowOptions) {
+	// Ignore ResolveNow requests from anything other than the most recent
+	// balancer, because older balancers were already removed from the config.
+	if bw != bw.gsb.latestBalancer() {
+		return
+	}
+	bw.gsb.cc.ResolveNow(opts)
+}
+
+func (bw *balancerWrapper) RemoveSubConn(sc balancer.SubConn) {
+	bw.gsb.mu.Lock()
+	if !bw.gsb.balancerCurrentOrPending(bw) {
+		bw.gsb.mu.Unlock()
+		return
+	}
+	bw.gsb.mu.Unlock()
+	bw.gsb.cc.RemoveSubConn(sc)
+}
+
+func (bw *balancerWrapper) UpdateAddresses(sc balancer.SubConn, addrs []resolver.Address) {
+	bw.gsb.mu.Lock()
+	if !bw.gsb.balancerCurrentOrPending(bw) {
+		bw.gsb.mu.Unlock()
+		return
+	}
+	bw.gsb.mu.Unlock()
+	bw.gsb.cc.UpdateAddresses(sc, addrs)
+}
+
+func (bw *balancerWrapper) Target() string {
+	return bw.gsb.cc.Target()
+}

vendor/google.golang.org/grpc/internal/binarylog/binarylog.go

@@ -31,7 +31,7 @@ import (
 // Logger is the global binary logger. It can be used to get binary logger for
 // each method.
 type Logger interface {
-	getMethodLogger(methodName string) *MethodLogger
+	GetMethodLogger(methodName string) MethodLogger
 }
 
 // binLogger is the global binary logger for the binary. One of this should be
@@ -49,17 +49,24 @@ func SetLogger(l Logger) {
 	binLogger = l
 }
 
+// GetLogger gets the binarg logger.
+//
+// Only call this at init time.
+func GetLogger() Logger {
+	return binLogger
+}
+
 // GetMethodLogger returns the methodLogger for the given methodName.
 //
 // methodName should be in the format of "/service/method".
 //
 // Each methodLogger returned by this method is a new instance. This is to
 // generate sequence id within the call.
-func GetMethodLogger(methodName string) *MethodLogger {
+func GetMethodLogger(methodName string) MethodLogger {
 	if binLogger == nil {
 		return nil
 	}
-	return binLogger.getMethodLogger(methodName)
+	return binLogger.GetMethodLogger(methodName)
 }
 
 func init() {
@@ -68,17 +75,29 @@ func init() {
 	binLogger = NewLoggerFromConfigString(configStr)
 }
 
-type methodLoggerConfig struct {
+// MethodLoggerConfig contains the setting for logging behavior of a method
+// logger. Currently, it contains the max length of header and message.
+type MethodLoggerConfig struct {
 	// Max length of header and message.
-	hdr, msg uint64
+	Header, Message uint64
+}
+
+// LoggerConfig contains the config for loggers to create method loggers.
+type LoggerConfig struct {
+	All      *MethodLoggerConfig
+	Services map[string]*MethodLoggerConfig
+	Methods  map[string]*MethodLoggerConfig
+
+	Blacklist map[string]struct{}
 }
 
 type logger struct {
-	all      *methodLoggerConfig
+	config LoggerConfig
-	services map[string]*methodLoggerConfig
+}
-	methods  map[string]*methodLoggerConfig
 
-	blacklist map[string]struct{}
+// NewLoggerFromConfig builds a logger with the given LoggerConfig.
+func NewLoggerFromConfig(config LoggerConfig) Logger {
+	return &logger{config: config}
 }
 
 // newEmptyLogger creates an empty logger. The map fields need to be filled in
@@ -88,57 +107,57 @@ func newEmptyLogger() *logger {
 }
 
 // Set method logger for "*".
-func (l *logger) setDefaultMethodLogger(ml *methodLoggerConfig) error {
+func (l *logger) setDefaultMethodLogger(ml *MethodLoggerConfig) error {
-	if l.all != nil {
+	if l.config.All != nil {
 		return fmt.Errorf("conflicting global rules found")
 	}
-	l.all = ml
+	l.config.All = ml
 	return nil
 }
 
 // Set method logger for "service/*".
 //
 // New methodLogger with same service overrides the old one.
-func (l *logger) setServiceMethodLogger(service string, ml *methodLoggerConfig) error {
+func (l *logger) setServiceMethodLogger(service string, ml *MethodLoggerConfig) error {
-	if _, ok := l.services[service]; ok {
+	if _, ok := l.config.Services[service]; ok {
 		return fmt.Errorf("conflicting service rules for service %v found", service)
 	}
-	if l.services == nil {
+	if l.config.Services == nil {
-		l.services = make(map[string]*methodLoggerConfig)
+		l.config.Services = make(map[string]*MethodLoggerConfig)
 	}
-	l.services[service] = ml
+	l.config.Services[service] = ml
 	return nil
 }
 
 // Set method logger for "service/method".
 //
 // New methodLogger with same method overrides the old one.
-func (l *logger) setMethodMethodLogger(method string, ml *methodLoggerConfig) error {
+func (l *logger) setMethodMethodLogger(method string, ml *MethodLoggerConfig) error {
-	if _, ok := l.blacklist[method]; ok {
+	if _, ok := l.config.Blacklist[method]; ok {
 		return fmt.Errorf("conflicting blacklist rules for method %v found", method)
 	}
-	if _, ok := l.methods[method]; ok {
+	if _, ok := l.config.Methods[method]; ok {
 		return fmt.Errorf("conflicting method rules for method %v found", method)
 	}
-	if l.methods == nil {
+	if l.config.Methods == nil {
-		l.methods = make(map[string]*methodLoggerConfig)
+		l.config.Methods = make(map[string]*MethodLoggerConfig)
 	}
-	l.methods[method] = ml
+	l.config.Methods[method] = ml
 	return nil
 }
 
 // Set blacklist method for "-service/method".
 func (l *logger) setBlacklist(method string) error {
-	if _, ok := l.blacklist[method]; ok {
+	if _, ok := l.config.Blacklist[method]; ok {
 		return fmt.Errorf("conflicting blacklist rules for method %v found", method)
 	}
-	if _, ok := l.methods[method]; ok {
+	if _, ok := l.config.Methods[method]; ok {
 		return fmt.Errorf("conflicting method rules for method %v found", method)
 	}
-	if l.blacklist == nil {
+	if l.config.Blacklist == nil {
-		l.blacklist = make(map[string]struct{})
+		l.config.Blacklist = make(map[string]struct{})
 	}
-	l.blacklist[method] = struct{}{}
+	l.config.Blacklist[method] = struct{}{}
 	return nil
 }
 
@@ -148,23 +167,23 @@ func (l *logger) setBlacklist(method string) error {
 //
 // Each methodLogger returned by this method is a new instance. This is to
 // generate sequence id within the call.
-func (l *logger) getMethodLogger(methodName string) *MethodLogger {
+func (l *logger) GetMethodLogger(methodName string) MethodLogger {
 	s, m, err := grpcutil.ParseMethod(methodName)
 	if err != nil {
 		grpclogLogger.Infof("binarylogging: failed to parse %q: %v", methodName, err)
 		return nil
 	}
-	if ml, ok := l.methods[s+"/"+m]; ok {
+	if ml, ok := l.config.Methods[s+"/"+m]; ok {
-		return newMethodLogger(ml.hdr, ml.msg)
+		return newMethodLogger(ml.Header, ml.Message)
 	}
-	if _, ok := l.blacklist[s+"/"+m]; ok {
+	if _, ok := l.config.Blacklist[s+"/"+m]; ok {
 		return nil
 	}
-	if ml, ok := l.services[s]; ok {
+	if ml, ok := l.config.Services[s]; ok {
-		return newMethodLogger(ml.hdr, ml.msg)
+		return newMethodLogger(ml.Header, ml.Message)
 	}
-	if l.all == nil {
+	if l.config.All == nil {
 		return nil
 	}
-	return newMethodLogger(l.all.hdr, l.all.msg)
+	return newMethodLogger(l.config.All.Header, l.config.All.Message)
 }

vendor/google.golang.org/grpc/internal/binarylog/env_config.go

@@ -89,7 +89,7 @@ func (l *logger) fillMethodLoggerWithConfigString(config string) error {
 		if err != nil {
 			return fmt.Errorf("invalid config: %q, %v", config, err)
 		}
-		if err := l.setDefaultMethodLogger(&methodLoggerConfig{hdr: hdr, msg: msg}); err != nil {
+		if err := l.setDefaultMethodLogger(&MethodLoggerConfig{Header: hdr, Message: msg}); err != nil {
 			return fmt.Errorf("invalid config: %v", err)
 		}
 		return nil
@@ -104,11 +104,11 @@ func (l *logger) fillMethodLoggerWithConfigString(config string) error {
 		return fmt.Errorf("invalid header/message length config: %q, %v", suffix, err)
 	}
 	if m == "*" {
-		if err := l.setServiceMethodLogger(s, &methodLoggerConfig{hdr: hdr, msg: msg}); err != nil {
+		if err := l.setServiceMethodLogger(s, &MethodLoggerConfig{Header: hdr, Message: msg}); err != nil {
 			return fmt.Errorf("invalid config: %v", err)
 		}
 	} else {
-		if err := l.setMethodMethodLogger(s+"/"+m, &methodLoggerConfig{hdr: hdr, msg: msg}); err != nil {
+		if err := l.setMethodMethodLogger(s+"/"+m, &MethodLoggerConfig{Header: hdr, Message: msg}); err != nil {
 			return fmt.Errorf("invalid config: %v", err)
 		}
 	}

vendor/google.golang.org/grpc/internal/binarylog/method_logger.go

@@ -48,7 +48,11 @@ func (g *callIDGenerator) reset() {
 var idGen callIDGenerator
 
 // MethodLogger is the sub-logger for each method.
-type MethodLogger struct {
+type MethodLogger interface {
+	Log(LogEntryConfig)
+}
+
+type methodLogger struct {
 	headerMaxLen, messageMaxLen uint64
 
 	callID          uint64
@@ -57,8 +61,8 @@ type MethodLogger struct {
 	sink Sink // TODO(blog): make this plugable.
 }
 
-func newMethodLogger(h, m uint64) *MethodLogger {
+func newMethodLogger(h, m uint64) *methodLogger {
-	return &MethodLogger{
+	return &methodLogger{
 		headerMaxLen:  h,
 		messageMaxLen: m,
 
@@ -69,8 +73,10 @@ func newMethodLogger(h, m uint64) *MethodLogger {
 	}
 }
 
-// Log creates a proto binary log entry, and logs it to the sink.
+// Build is an internal only method for building the proto message out of the
-func (ml *MethodLogger) Log(c LogEntryConfig) {
+// input event. It's made public to enable other library to reuse as much logic
+// in methodLogger as possible.
+func (ml *methodLogger) Build(c LogEntryConfig) *pb.GrpcLogEntry {
 	m := c.toProto()
 	timestamp, _ := ptypes.TimestampProto(time.Now())
 	m.Timestamp = timestamp
@@ -85,11 +91,15 @@ func (ml *MethodLogger) Log(c LogEntryConfig) {
 	case *pb.GrpcLogEntry_Message:
 		m.PayloadTruncated = ml.truncateMessage(pay.Message)
 	}
-
+	return m
-	ml.sink.Write(m)
 }
 
-func (ml *MethodLogger) truncateMetadata(mdPb *pb.Metadata) (truncated bool) {
+// Log creates a proto binary log entry, and logs it to the sink.
+func (ml *methodLogger) Log(c LogEntryConfig) {
+	ml.sink.Write(ml.Build(c))
+}
+
+func (ml *methodLogger) truncateMetadata(mdPb *pb.Metadata) (truncated bool) {
 	if ml.headerMaxLen == maxUInt {
 		return false
 	}
@@ -119,7 +129,7 @@ func (ml *MethodLogger) truncateMetadata(mdPb *pb.Metadata) (truncated bool) {
 	return truncated
 }
 
-func (ml *MethodLogger) truncateMessage(msgPb *pb.Message) (truncated bool) {
+func (ml *methodLogger) truncateMessage(msgPb *pb.Message) (truncated bool) {
 	if ml.messageMaxLen == maxUInt {
 		return false
 	}

vendor/google.golang.org/grpc/internal/channelz/funcs.go

@@ -24,6 +24,8 @@
 package channelz
 
 import (
+	"context"
+	"errors"
 	"fmt"
 	"sort"
 	"sync"
@@ -49,7 +51,8 @@ var (
 // TurnOn turns on channelz data collection.
 func TurnOn() {
 	if !IsOn() {
-		NewChannelzStorage()
+		db.set(newChannelMap())
+		idGen.reset()
 		atomic.StoreInt32(&curState, 1)
 	}
 }
@@ -94,46 +97,40 @@ func (d *dbWrapper) get() *channelMap {
 	return d.DB
 }
 
-// NewChannelzStorage initializes channelz data storage and id generator.
+// NewChannelzStorageForTesting initializes channelz data storage and id
+// generator for testing purposes.
 //
-// This function returns a cleanup function to wait for all channelz state to be reset by the
+// Returns a cleanup function to be invoked by the test, which waits for up to
-// grpc goroutines when those entities get closed. By using this cleanup function, we make sure tests
+// 10s for all channelz state to be reset by the grpc goroutines when those
-// don't mess up each other, i.e. lingering goroutine from previous test doing entity removal happen
+// entities get closed. This cleanup function helps with ensuring that tests
-// to remove some entity just register by the new test, since the id space is the same.
+// don't mess up each other.
-//
+func NewChannelzStorageForTesting() (cleanup func() error) {
-// Note: This function is exported for testing purpose only. User should not call
+	db.set(newChannelMap())
-// it in most cases.
-func NewChannelzStorage() (cleanup func() error) {
-	db.set(&channelMap{
-		topLevelChannels: make(map[int64]struct{}),
-		channels:         make(map[int64]*channel),
-		listenSockets:    make(map[int64]*listenSocket),
-		normalSockets:    make(map[int64]*normalSocket),
-		servers:          make(map[int64]*server),
-		subChannels:      make(map[int64]*subChannel),
-	})
 	idGen.reset()
+
 	return func() error {
-		var err error
 		cm := db.get()
 		if cm == nil {
 			return nil
 		}
-		for i := 0; i < 1000; i++ {
+
-			cm.mu.Lock()
+		ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
-			if len(cm.topLevelChannels) == 0 && len(cm.servers) == 0 && len(cm.channels) == 0 && len(cm.subChannels) == 0 && len(cm.listenSockets) == 0 && len(cm.normalSockets) == 0 {
+		defer cancel()
-				cm.mu.Unlock()
+		ticker := time.NewTicker(10 * time.Millisecond)
-				// all things stored in the channelz map have been cleared.
+		defer ticker.Stop()
+		for {
+			cm.mu.RLock()
+			topLevelChannels, servers, channels, subChannels, listenSockets, normalSockets := len(cm.topLevelChannels), len(cm.servers), len(cm.channels), len(cm.subChannels), len(cm.listenSockets), len(cm.normalSockets)
+			cm.mu.RUnlock()
+
+			if err := ctx.Err(); err != nil {
+				return fmt.Errorf("after 10s the channelz map has not been cleaned up yet, topchannels: %d, servers: %d, channels: %d, subchannels: %d, listen sockets: %d, normal sockets: %d", topLevelChannels, servers, channels, subChannels, listenSockets, normalSockets)
+			}
+			if topLevelChannels == 0 && servers == 0 && channels == 0 && subChannels == 0 && listenSockets == 0 && normalSockets == 0 {
 				return nil
 			}
-			cm.mu.Unlock()
+			<-ticker.C
-			time.Sleep(10 * time.Millisecond)
 		}
-
-		cm.mu.Lock()
-		err = fmt.Errorf("after 10s the channelz map has not been cleaned up yet, topchannels: %d, servers: %d, channels: %d, subchannels: %d, listen sockets: %d, normal sockets: %d", len(cm.topLevelChannels), len(cm.servers), len(cm.channels), len(cm.subChannels), len(cm.listenSockets), len(cm.normalSockets))
-		cm.mu.Unlock()
-		return err
 	}
 }
 
@@ -188,54 +185,77 @@ func GetServer(id int64) *ServerMetric {
 	return db.get().GetServer(id)
 }
 
-// RegisterChannel registers the given channel c in channelz database with ref
+// RegisterChannel registers the given channel c in the channelz database with
-// as its reference name, and add it to the child list of its parent (identified
+// ref as its reference name, and adds it to the child list of its parent
-// by pid). pid = 0 means no parent. It returns the unique channelz tracking id
+// (identified by pid). pid == nil means no parent.
-// assigned to this channel.
+//
-func RegisterChannel(c Channel, pid int64, ref string) int64 {
+// Returns a unique channelz identifier assigned to this channel.
+//
+// If channelz is not turned ON, the channelz database is not mutated.
+func RegisterChannel(c Channel, pid *Identifier, ref string) *Identifier {
 	id := idGen.genID()
+	var parent int64
+	isTopChannel := true
+	if pid != nil {
+		isTopChannel = false
+		parent = pid.Int()
+	}
+
+	if !IsOn() {
+		return newIdentifer(RefChannel, id, pid)
+	}
+
 	cn := &channel{
 		refName:     ref,
 		c:           c,
 		subChans:    make(map[int64]string),
 		nestedChans: make(map[int64]string),
 		id:          id,
-		pid:         pid,
+		pid:         parent,
 		trace:       &channelTrace{createdTime: time.Now(), events: make([]*TraceEvent, 0, getMaxTraceEntry())},
 	}
-	if pid == 0 {
+	db.get().addChannel(id, cn, isTopChannel, parent)
-		db.get().addChannel(id, cn, true, pid, ref)
+	return newIdentifer(RefChannel, id, pid)
-	} else {
-		db.get().addChannel(id, cn, false, pid, ref)
-	}
-	return id
 }
 
-// RegisterSubChannel registers the given channel c in channelz database with ref
+// RegisterSubChannel registers the given subChannel c in the channelz database
-// as its reference name, and add it to the child list of its parent (identified
+// with ref as its reference name, and adds it to the child list of its parent
-// by pid). It returns the unique channelz tracking id assigned to this subchannel.
+// (identified by pid).
-func RegisterSubChannel(c Channel, pid int64, ref string) int64 {
+//
-	if pid == 0 {
+// Returns a unique channelz identifier assigned to this subChannel.
-		logger.Error("a SubChannel's parent id cannot be 0")
+//
-		return 0
+// If channelz is not turned ON, the channelz database is not mutated.
+func RegisterSubChannel(c Channel, pid *Identifier, ref string) (*Identifier, error) {
+	if pid == nil {
+		return nil, errors.New("a SubChannel's parent id cannot be nil")
 	}
 	id := idGen.genID()
+	if !IsOn() {
+		return newIdentifer(RefSubChannel, id, pid), nil
+	}
+
 	sc := &subChannel{
 		refName: ref,
 		c:       c,
 		sockets: make(map[int64]string),
 		id:      id,
-		pid:     pid,
+		pid:     pid.Int(),
 		trace:   &channelTrace{createdTime: time.Now(), events: make([]*TraceEvent, 0, getMaxTraceEntry())},
 	}
-	db.get().addSubChannel(id, sc, pid, ref)
+	db.get().addSubChannel(id, sc, pid.Int())
-	return id
+	return newIdentifer(RefSubChannel, id, pid), nil
 }
 
 // RegisterServer registers the given server s in channelz database. It returns
 // the unique channelz tracking id assigned to this server.
-func RegisterServer(s Server, ref string) int64 {
+//
+// If channelz is not turned ON, the channelz database is not mutated.
+func RegisterServer(s Server, ref string) *Identifier {
 	id := idGen.genID()
+	if !IsOn() {
+		return newIdentifer(RefServer, id, nil)
+	}
+
 	svr := &server{
 		refName:       ref,
 		s:             s,
@@ -244,71 +264,92 @@ func RegisterServer(s Server, ref string) int64 {
 		id:            id,
 	}
 	db.get().addServer(id, svr)
-	return id
+	return newIdentifer(RefServer, id, nil)
 }
 
 // RegisterListenSocket registers the given listen socket s in channelz database
 // with ref as its reference name, and add it to the child list of its parent
 // (identified by pid). It returns the unique channelz tracking id assigned to
 // this listen socket.
-func RegisterListenSocket(s Socket, pid int64, ref string) int64 {
+//
-	if pid == 0 {
+// If channelz is not turned ON, the channelz database is not mutated.
-		logger.Error("a ListenSocket's parent id cannot be 0")
+func RegisterListenSocket(s Socket, pid *Identifier, ref string) (*Identifier, error) {
-		return 0
+	if pid == nil {
+		return nil, errors.New("a ListenSocket's parent id cannot be 0")
 	}
 	id := idGen.genID()
-	ls := &listenSocket{refName: ref, s: s, id: id, pid: pid}
+	if !IsOn() {
-	db.get().addListenSocket(id, ls, pid, ref)
+		return newIdentifer(RefListenSocket, id, pid), nil
-	return id
+	}
+
+	ls := &listenSocket{refName: ref, s: s, id: id, pid: pid.Int()}
+	db.get().addListenSocket(id, ls, pid.Int())
+	return newIdentifer(RefListenSocket, id, pid), nil
 }
 
 // RegisterNormalSocket registers the given normal socket s in channelz database
-// with ref as its reference name, and add it to the child list of its parent
+// with ref as its reference name, and adds it to the child list of its parent
 // (identified by pid). It returns the unique channelz tracking id assigned to
 // this normal socket.
-func RegisterNormalSocket(s Socket, pid int64, ref string) int64 {
+//
-	if pid == 0 {
+// If channelz is not turned ON, the channelz database is not mutated.
-		logger.Error("a NormalSocket's parent id cannot be 0")
+func RegisterNormalSocket(s Socket, pid *Identifier, ref string) (*Identifier, error) {
-		return 0
+	if pid == nil {
+		return nil, errors.New("a NormalSocket's parent id cannot be 0")
 	}
 	id := idGen.genID()
-	ns := &normalSocket{refName: ref, s: s, id: id, pid: pid}
+	if !IsOn() {
-	db.get().addNormalSocket(id, ns, pid, ref)
+		return newIdentifer(RefNormalSocket, id, pid), nil
-	return id
+	}
+
+	ns := &normalSocket{refName: ref, s: s, id: id, pid: pid.Int()}
+	db.get().addNormalSocket(id, ns, pid.Int())
+	return newIdentifer(RefNormalSocket, id, pid), nil
 }
 
-// RemoveEntry removes an entry with unique channelz trakcing id to be id from
+// RemoveEntry removes an entry with unique channelz tracking id to be id from
 // channelz database.
-func RemoveEntry(id int64) {
+//
-	db.get().removeEntry(id)
+// If channelz is not turned ON, this function is a no-op.
+func RemoveEntry(id *Identifier) {
+	if !IsOn() {
+		return
+	}
+	db.get().removeEntry(id.Int())
 }
 
-// TraceEventDesc is what the caller of AddTraceEvent should provide to describe the event to be added
+// TraceEventDesc is what the caller of AddTraceEvent should provide to describe
-// to the channel trace.
+// the event to be added to the channel trace.
-// The Parent field is optional. It is used for event that will be recorded in the entity's parent
+//
-// trace also.
+// The Parent field is optional. It is used for an event that will be recorded
+// in the entity's parent trace.
 type TraceEventDesc struct {
 	Desc     string
 	Severity Severity
 	Parent   *TraceEventDesc
 }
 
-// AddTraceEvent adds trace related to the entity with specified id, using the provided TraceEventDesc.
+// AddTraceEvent adds trace related to the entity with specified id, using the
-func AddTraceEvent(l grpclog.DepthLoggerV2, id int64, depth int, desc *TraceEventDesc) {
+// provided TraceEventDesc.
-	for d := desc; d != nil; d = d.Parent {
+//
-		switch d.Severity {
+// If channelz is not turned ON, this will simply log the event descriptions.
-		case CtUnknown, CtInfo:
+func AddTraceEvent(l grpclog.DepthLoggerV2, id *Identifier, depth int, desc *TraceEventDesc) {
-			l.InfoDepth(depth+1, d.Desc)
+	// Log only the trace description associated with the bottom most entity.
-		case CtWarning:
+	switch desc.Severity {
-			l.WarningDepth(depth+1, d.Desc)
+	case CtUnknown, CtInfo:
-		case CtError:
+		l.InfoDepth(depth+1, withParens(id)+desc.Desc)
-			l.ErrorDepth(depth+1, d.Desc)
+	case CtWarning:
-		}
+		l.WarningDepth(depth+1, withParens(id)+desc.Desc)
+	case CtError:
+		l.ErrorDepth(depth+1, withParens(id)+desc.Desc)
 	}
+
 	if getMaxTraceEntry() == 0 {
 		return
 	}
-	db.get().traceEvent(id, desc)
+	if IsOn() {
+		db.get().traceEvent(id.Int(), desc)
+	}
 }
 
 // channelMap is the storage data structure for channelz.
@@ -326,6 +367,17 @@ type channelMap struct {
 	normalSockets    map[int64]*normalSocket
 }
 
+func newChannelMap() *channelMap {
+	return &channelMap{
+		topLevelChannels: make(map[int64]struct{}),
+		channels:         make(map[int64]*channel),
+		listenSockets:    make(map[int64]*listenSocket),
+		normalSockets:    make(map[int64]*normalSocket),
+		servers:          make(map[int64]*server),
+		subChannels:      make(map[int64]*subChannel),
+	}
+}
+
 func (c *channelMap) addServer(id int64, s *server) {
 	c.mu.Lock()
 	s.cm = c
@@ -333,7 +385,7 @@ func (c *channelMap) addServer(id int64, s *server) {
 	c.mu.Unlock()
 }
 
-func (c *channelMap) addChannel(id int64, cn *channel, isTopChannel bool, pid int64, ref string) {
+func (c *channelMap) addChannel(id int64, cn *channel, isTopChannel bool, pid int64) {
 	c.mu.Lock()
 	cn.cm = c
 	cn.trace.cm = c
@@ -346,7 +398,7 @@ func (c *channelMap) addChannel(id int64, cn *channel, isTopChannel bool, pid in
 	c.mu.Unlock()
 }
 
-func (c *channelMap) addSubChannel(id int64, sc *subChannel, pid int64, ref string) {
+func (c *channelMap) addSubChannel(id int64, sc *subChannel, pid int64) {
 	c.mu.Lock()
 	sc.cm = c
 	sc.trace.cm = c
@@ -355,7 +407,7 @@ func (c *channelMap) addSubChannel(id int64, sc *subChannel, pid int64, ref stri
 	c.mu.Unlock()
 }
 
-func (c *channelMap) addListenSocket(id int64, ls *listenSocket, pid int64, ref string) {
+func (c *channelMap) addListenSocket(id int64, ls *listenSocket, pid int64) {
 	c.mu.Lock()
 	ls.cm = c
 	c.listenSockets[id] = ls
@@ -363,7 +415,7 @@ func (c *channelMap) addListenSocket(id int64, ls *listenSocket, pid int64, ref
 	c.mu.Unlock()
 }
 
-func (c *channelMap) addNormalSocket(id int64, ns *normalSocket, pid int64, ref string) {
+func (c *channelMap) addNormalSocket(id int64, ns *normalSocket, pid int64) {
 	c.mu.Lock()
 	ns.cm = c
 	c.normalSockets[id] = ns
@@ -630,7 +682,7 @@ func (c *channelMap) GetServerSockets(id int64, startID int64, maxResults int64)
 	if count == 0 {
 		end = true
 	}
-	var s []*SocketMetric
+	s := make([]*SocketMetric, 0, len(sks))
 	for _, ns := range sks {
 		sm := &SocketMetric{}
 		sm.SocketData = ns.s.ChannelzMetric()

vendor/google.golang.org/grpc/internal/channelz/id.go

@@ -0,0 +1,75 @@
+/*
+ *
+ * Copyright 2022 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package channelz
+
+import "fmt"
+
+// Identifier is an opaque identifier which uniquely identifies an entity in the
+// channelz database.
+type Identifier struct {
+	typ RefChannelType
+	id  int64
+	str string
+	pid *Identifier
+}
+
+// Type returns the entity type corresponding to id.
+func (id *Identifier) Type() RefChannelType {
+	return id.typ
+}
+
+// Int returns the integer identifier corresponding to id.
+func (id *Identifier) Int() int64 {
+	return id.id
+}
+
+// String returns a string representation of the entity corresponding to id.
+//
+// This includes some information about the parent as well. Examples:
+// Top-level channel: [Channel #channel-number]
+// Nested channel:    [Channel #parent-channel-number Channel #channel-number]
+// Sub channel:       [Channel #parent-channel SubChannel #subchannel-number]
+func (id *Identifier) String() string {
+	return id.str
+}
+
+// Equal returns true if other is the same as id.
+func (id *Identifier) Equal(other *Identifier) bool {
+	if (id != nil) != (other != nil) {
+		return false
+	}
+	if id == nil && other == nil {
+		return true
+	}
+	return id.typ == other.typ && id.id == other.id && id.pid == other.pid
+}
+
+// NewIdentifierForTesting returns a new opaque identifier to be used only for
+// testing purposes.
+func NewIdentifierForTesting(typ RefChannelType, id int64, pid *Identifier) *Identifier {
+	return newIdentifer(typ, id, pid)
+}
+
+func newIdentifer(typ RefChannelType, id int64, pid *Identifier) *Identifier {
+	str := fmt.Sprintf("%s #%d", typ, id)
+	if pid != nil {
+		str = fmt.Sprintf("%s %s", pid, str)
+	}
+	return &Identifier{typ: typ, id: id, str: str, pid: pid}
+}

vendor/google.golang.org/grpc/internal/channelz/logging.go

@@ -26,77 +26,54 @@ import (
 
 var logger = grpclog.Component("channelz")
 
+func withParens(id *Identifier) string {
+	return "[" + id.String() + "] "
+}
+
 // Info logs and adds a trace event if channelz is on.
-func Info(l grpclog.DepthLoggerV2, id int64, args ...interface{}) {
+func Info(l grpclog.DepthLoggerV2, id *Identifier, args ...interface{}) {
-	if IsOn() {
+	AddTraceEvent(l, id, 1, &TraceEventDesc{
-		AddTraceEvent(l, id, 1, &TraceEventDesc{
+		Desc:     fmt.Sprint(args...),
-			Desc:     fmt.Sprint(args...),
+		Severity: CtInfo,
-			Severity: CtInfo,
+	})
-		})
-	} else {
-		l.InfoDepth(1, args...)
-	}
 }
 
 // Infof logs and adds a trace event if channelz is on.
-func Infof(l grpclog.DepthLoggerV2, id int64, format string, args ...interface{}) {
+func Infof(l grpclog.DepthLoggerV2, id *Identifier, format string, args ...interface{}) {
-	msg := fmt.Sprintf(format, args...)
+	AddTraceEvent(l, id, 1, &TraceEventDesc{
-	if IsOn() {
+		Desc:     fmt.Sprintf(format, args...),
-		AddTraceEvent(l, id, 1, &TraceEventDesc{
+		Severity: CtInfo,
-			Desc:     msg,
+	})
-			Severity: CtInfo,
-		})
-	} else {
-		l.InfoDepth(1, msg)
-	}
 }
 
 // Warning logs and adds a trace event if channelz is on.
-func Warning(l grpclog.DepthLoggerV2, id int64, args ...interface{}) {
+func Warning(l grpclog.DepthLoggerV2, id *Identifier, args ...interface{}) {
-	if IsOn() {
+	AddTraceEvent(l, id, 1, &TraceEventDesc{
-		AddTraceEvent(l, id, 1, &TraceEventDesc{
+		Desc:     fmt.Sprint(args...),
-			Desc:     fmt.Sprint(args...),
+		Severity: CtWarning,
-			Severity: CtWarning,
+	})
-		})
-	} else {
-		l.WarningDepth(1, args...)
-	}
 }
 
 // Warningf logs and adds a trace event if channelz is on.
-func Warningf(l grpclog.DepthLoggerV2, id int64, format string, args ...interface{}) {
+func Warningf(l grpclog.DepthLoggerV2, id *Identifier, format string, args ...interface{}) {
-	msg := fmt.Sprintf(format, args...)
+	AddTraceEvent(l, id, 1, &TraceEventDesc{
-	if IsOn() {
+		Desc:     fmt.Sprintf(format, args...),
-		AddTraceEvent(l, id, 1, &TraceEventDesc{
+		Severity: CtWarning,
-			Desc:     msg,
+	})
-			Severity: CtWarning,
-		})
-	} else {
-		l.WarningDepth(1, msg)
-	}
 }
 
 // Error logs and adds a trace event if channelz is on.
-func Error(l grpclog.DepthLoggerV2, id int64, args ...interface{}) {
+func Error(l grpclog.DepthLoggerV2, id *Identifier, args ...interface{}) {
-	if IsOn() {
+	AddTraceEvent(l, id, 1, &TraceEventDesc{
-		AddTraceEvent(l, id, 1, &TraceEventDesc{
+		Desc:     fmt.Sprint(args...),
-			Desc:     fmt.Sprint(args...),
+		Severity: CtError,
-			Severity: CtError,
+	})
-		})
-	} else {
-		l.ErrorDepth(1, args...)
-	}
 }
 
 // Errorf logs and adds a trace event if channelz is on.
-func Errorf(l grpclog.DepthLoggerV2, id int64, format string, args ...interface{}) {
+func Errorf(l grpclog.DepthLoggerV2, id *Identifier, format string, args ...interface{}) {
-	msg := fmt.Sprintf(format, args...)
+	AddTraceEvent(l, id, 1, &TraceEventDesc{
-	if IsOn() {
+		Desc:     fmt.Sprintf(format, args...),
-		AddTraceEvent(l, id, 1, &TraceEventDesc{
+		Severity: CtError,
-			Desc:     msg,
+	})
-			Severity: CtError,
-		})
-	} else {
-		l.ErrorDepth(1, msg)
-	}
 }

vendor/google.golang.org/grpc/internal/channelz/types.go

@@ -686,12 +686,33 @@ const (
 type RefChannelType int
 
 const (
+	// RefUnknown indicates an unknown entity type, the zero value for this type.
+	RefUnknown RefChannelType = iota
 	// RefChannel indicates the referenced entity is a Channel.
-	RefChannel RefChannelType = iota
+	RefChannel
 	// RefSubChannel indicates the referenced entity is a SubChannel.
 	RefSubChannel
+	// RefServer indicates the referenced entity is a Server.
+	RefServer
+	// RefListenSocket indicates the referenced entity is a ListenSocket.
+	RefListenSocket
+	// RefNormalSocket indicates the referenced entity is a NormalSocket.
+	RefNormalSocket
 )
 
+var refChannelTypeToString = map[RefChannelType]string{
+	RefUnknown:      "Unknown",
+	RefChannel:      "Channel",
+	RefSubChannel:   "SubChannel",
+	RefServer:       "Server",
+	RefListenSocket: "ListenSocket",
+	RefNormalSocket: "NormalSocket",
+}
+
+func (r RefChannelType) String() string {
+	return refChannelTypeToString[r]
+}
+
 func (c *channelTrace) dumpData() *ChannelTrace {
 	c.mu.Lock()
 	ct := &ChannelTrace{EventNum: c.eventCount, CreationTime: c.createdTime}

vendor/google.golang.org/grpc/internal/channelz/types_linux.go

@@ -1,5 +1,3 @@
-// +build !appengine
-
 /*
  *
  * Copyright 2018 gRPC authors.

vendor/google.golang.org/grpc/internal/channelz/types_nonlinux.go

@@ -1,4 +1,5 @@
-// +build !linux appengine
+//go:build !linux
+// +build !linux
 
 /*
  *
@@ -37,6 +38,6 @@ type SocketOptionData struct {
 // Windows OS doesn't support Socket Option
 func (s *SocketOptionData) Getsockopt(fd uintptr) {
 	once.Do(func() {
-		logger.Warning("Channelz: socket options are not supported on non-linux os and appengine.")
+		logger.Warning("Channelz: socket options are not supported on non-linux environments")
 	})
 }

vendor/google.golang.org/grpc/internal/channelz/util_linux.go

@@ -1,5 +1,3 @@
-// +build linux,!appengine
-
 /*
  *
  * Copyright 2018 gRPC authors.

vendor/google.golang.org/grpc/internal/channelz/util_nonlinux.go

@@ -1,4 +1,5 @@
-// +build !linux appengine
+//go:build !linux
+// +build !linux
 
 /*
  *

vendor/google.golang.org/grpc/internal/credentials/spiffe.go

@@ -1,5 +1,3 @@
-// +build !appengine
-
 /*
  *
  * Copyright 2020 gRPC authors.

vendor/google.golang.org/grpc/internal/credentials/spiffe_appengine.go

@@ -1,31 +0,0 @@
-// +build appengine
-
-/*
- *
- * Copyright 2020 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package credentials
-
-import (
-	"crypto/tls"
-	"net/url"
-)
-
-// SPIFFEIDFromState is a no-op for appengine builds.
-func SPIFFEIDFromState(state tls.ConnectionState) *url.URL {
-	return nil
-}

vendor/google.golang.org/grpc/internal/credentials/syscallconn.go

@@ -1,5 +1,3 @@
-// +build !appengine
-
 /*
  *
  * Copyright 2018 gRPC authors.

vendor/google.golang.org/grpc/internal/credentials/util.go

@@ -18,7 +18,9 @@
 
 package credentials
 
-import "crypto/tls"
+import (
+	"crypto/tls"
+)
 
 const alpnProtoStrH2 = "h2"
 

vendor/google.golang.org/grpc/internal/envconfig/envconfig.go

@@ -26,13 +26,10 @@ import (
 
 const (
 	prefix          = "GRPC_GO_"
-	retryStr        = prefix + "RETRY"
 	txtErrIgnoreStr = prefix + "IGNORE_TXT_ERRORS"
 )
 
 var (
-	// Retry is set if retry is explicitly enabled via "GRPC_GO_RETRY=on".
-	Retry = strings.EqualFold(os.Getenv(retryStr), "on")
 	// TXTErrIgnore is set if TXT errors should be ignored ("GRPC_GO_IGNORE_TXT_ERRORS" is not "false").
 	TXTErrIgnore = !strings.EqualFold(os.Getenv(txtErrIgnoreStr), "false")
 )

vendor/google.golang.org/grpc/internal/envconfig/xds.go

@@ -0,0 +1,101 @@
+/*
+ *
+ * Copyright 2020 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package envconfig
+
+import (
+	"os"
+	"strings"
+)
+
+const (
+	// XDSBootstrapFileNameEnv is the env variable to set bootstrap file name.
+	// Do not use this and read from env directly. Its value is read and kept in
+	// variable XDSBootstrapFileName.
+	//
+	// When both bootstrap FileName and FileContent are set, FileName is used.
+	XDSBootstrapFileNameEnv = "GRPC_XDS_BOOTSTRAP"
+	// XDSBootstrapFileContentEnv is the env variable to set bootstrap file
+	// content. Do not use this and read from env directly. Its value is read
+	// and kept in variable XDSBootstrapFileContent.
+	//
+	// When both bootstrap FileName and FileContent are set, FileName is used.
+	XDSBootstrapFileContentEnv = "GRPC_XDS_BOOTSTRAP_CONFIG"
+
+	ringHashSupportEnv           = "GRPC_XDS_EXPERIMENTAL_ENABLE_RING_HASH"
+	clientSideSecuritySupportEnv = "GRPC_XDS_EXPERIMENTAL_SECURITY_SUPPORT"
+	aggregateAndDNSSupportEnv    = "GRPC_XDS_EXPERIMENTAL_ENABLE_AGGREGATE_AND_LOGICAL_DNS_CLUSTER"
+	rbacSupportEnv               = "GRPC_XDS_EXPERIMENTAL_RBAC"
+	outlierDetectionSupportEnv   = "GRPC_EXPERIMENTAL_ENABLE_OUTLIER_DETECTION"
+	federationEnv                = "GRPC_EXPERIMENTAL_XDS_FEDERATION"
+	rlsInXDSEnv                  = "GRPC_EXPERIMENTAL_XDS_RLS_LB"
+
+	c2pResolverTestOnlyTrafficDirectorURIEnv = "GRPC_TEST_ONLY_GOOGLE_C2P_RESOLVER_TRAFFIC_DIRECTOR_URI"
+)
+
+var (
+	// XDSBootstrapFileName holds the name of the file which contains xDS
+	// bootstrap configuration. Users can specify the location of the bootstrap
+	// file by setting the environment variable "GRPC_XDS_BOOTSTRAP".
+	//
+	// When both bootstrap FileName and FileContent are set, FileName is used.
+	XDSBootstrapFileName = os.Getenv(XDSBootstrapFileNameEnv)
+	// XDSBootstrapFileContent holds the content of the xDS bootstrap
+	// configuration. Users can specify the bootstrap config by setting the
+	// environment variable "GRPC_XDS_BOOTSTRAP_CONFIG".
+	//
+	// When both bootstrap FileName and FileContent are set, FileName is used.
+	XDSBootstrapFileContent = os.Getenv(XDSBootstrapFileContentEnv)
+	// XDSRingHash indicates whether ring hash support is enabled, which can be
+	// disabled by setting the environment variable
+	// "GRPC_XDS_EXPERIMENTAL_ENABLE_RING_HASH" to "false".
+	XDSRingHash = !strings.EqualFold(os.Getenv(ringHashSupportEnv), "false")
+	// XDSClientSideSecurity is used to control processing of security
+	// configuration on the client-side.
+	//
+	// Note that there is no env var protection for the server-side because we
+	// have a brand new API on the server-side and users explicitly need to use
+	// the new API to get security integration on the server.
+	XDSClientSideSecurity = !strings.EqualFold(os.Getenv(clientSideSecuritySupportEnv), "false")
+	// XDSAggregateAndDNS indicates whether processing of aggregated cluster
+	// and DNS cluster is enabled, which can be enabled by setting the
+	// environment variable
+	// "GRPC_XDS_EXPERIMENTAL_ENABLE_AGGREGATE_AND_LOGICAL_DNS_CLUSTER" to
+	// "true".
+	XDSAggregateAndDNS = strings.EqualFold(os.Getenv(aggregateAndDNSSupportEnv), "true")
+
+	// XDSRBAC indicates whether xDS configured RBAC HTTP Filter is enabled,
+	// which can be disabled by setting the environment variable
+	// "GRPC_XDS_EXPERIMENTAL_RBAC" to "false".
+	XDSRBAC = !strings.EqualFold(os.Getenv(rbacSupportEnv), "false")
+	// XDSOutlierDetection indicates whether outlier detection support is
+	// enabled, which can be enabled by setting the environment variable
+	// "GRPC_EXPERIMENTAL_ENABLE_OUTLIER_DETECTION" to "true".
+	XDSOutlierDetection = strings.EqualFold(os.Getenv(outlierDetectionSupportEnv), "true")
+	// XDSFederation indicates whether federation support is enabled.
+	XDSFederation = strings.EqualFold(os.Getenv(federationEnv), "true")
+
+	// XDSRLS indicates whether processing of Cluster Specifier plugins and
+	// support for the RLS CLuster Specifier is enabled, which can be enabled by
+	// setting the environment variable "GRPC_EXPERIMENTAL_XDS_RLS_LB" to
+	// "true".
+	XDSRLS = strings.EqualFold(os.Getenv(rlsInXDSEnv), "true")
+
+	// C2PResolverTestOnlyTrafficDirectorURI is the TD URI for testing.
+	C2PResolverTestOnlyTrafficDirectorURI = os.Getenv(c2pResolverTestOnlyTrafficDirectorURIEnv)
+)

vendor/google.golang.org/grpc/internal/grpclog/grpclog.go

@@ -115,12 +115,12 @@ type LoggerV2 interface {
 // Notice: This type is EXPERIMENTAL and may be changed or removed in a
 // later release.
 type DepthLoggerV2 interface {
-	// InfoDepth logs to INFO log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// InfoDepth logs to INFO log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	InfoDepth(depth int, args ...interface{})
-	// WarningDepth logs to WARNING log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// WarningDepth logs to WARNING log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	WarningDepth(depth int, args ...interface{})
-	// ErrorDetph logs to ERROR log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// ErrorDepth logs to ERROR log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	ErrorDepth(depth int, args ...interface{})
-	// FatalDepth logs to FATAL log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// FatalDepth logs to FATAL log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	FatalDepth(depth int, args ...interface{})
 }

vendor/google.golang.org/grpc/internal/grpcutil/grpcutil.go

@@ -1,8 +1,6 @@
-// +build appengine
-
 /*
  *
- * Copyright 2018 gRPC authors.
+ * Copyright 2021 gRPC authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,13 +16,5 @@
  *
  */
 
-package credentials
+// Package grpcutil provides utility functions used across the gRPC codebase.
-
+package grpcutil
-import (
-	"net"
-)
-
-// WrapSyscallConn returns newConn on appengine.
-func WrapSyscallConn(rawConn, newConn net.Conn) net.Conn {
-	return newConn
-}

vendor/google.golang.org/grpc/internal/grpcutil/regex.go

@@ -1,8 +1,6 @@
-// +build go1.13
-
 /*
  *
- * Copyright 2019 gRPC authors.
+ * Copyright 2021 gRPC authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,16 +16,16 @@
  *
  */
 
-package dns
+package grpcutil
 
-import "net"
+import "regexp"
 
-func init() {
+// FullMatchWithRegex returns whether the full text matches the regex provided.
-	filterError = func(err error) error {
+func FullMatchWithRegex(re *regexp.Regexp, text string) bool {
-		if dnsErr, ok := err.(*net.DNSError); ok && dnsErr.IsNotFound {
+	if len(text) == 0 {
-			// The name does not exist; not an error.
+		return re.MatchString(text)
-			return nil
-		}
-		return err
 	}
+	re.Longest()
+	rem := re.FindString(text)
+	return len(rem) == len(text)
 }

vendor/google.golang.org/grpc/internal/grpcutil/target.go

@@ -1,89 +0,0 @@
-/*
- *
- * Copyright 2020 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package grpcutil provides a bunch of utility functions to be used across the
-// gRPC codebase.
-package grpcutil
-
-import (
-	"strings"
-
-	"google.golang.org/grpc/resolver"
-)
-
-// split2 returns the values from strings.SplitN(s, sep, 2).
-// If sep is not found, it returns ("", "", false) instead.
-func split2(s, sep string) (string, string, bool) {
-	spl := strings.SplitN(s, sep, 2)
-	if len(spl) < 2 {
-		return "", "", false
-	}
-	return spl[0], spl[1], true
-}
-
-// ParseTarget splits target into a resolver.Target struct containing scheme,
-// authority and endpoint. skipUnixColonParsing indicates that the parse should
-// not parse "unix:[path]" cases. This should be true in cases where a custom
-// dialer is present, to prevent a behavior change.
-//
-// If target is not a valid scheme://authority/endpoint as specified in
-// https://github.com/grpc/grpc/blob/master/doc/naming.md,
-// it returns {Endpoint: target}.
-func ParseTarget(target string, skipUnixColonParsing bool) (ret resolver.Target) {
-	var ok bool
-	if strings.HasPrefix(target, "unix-abstract:") {
-		if strings.HasPrefix(target, "unix-abstract://") {
-			// Maybe, with Authority specified, try to parse it
-			var remain string
-			ret.Scheme, remain, _ = split2(target, "://")
-			ret.Authority, ret.Endpoint, ok = split2(remain, "/")
-			if !ok {
-				// No Authority, add the "//" back
-				ret.Endpoint = "//" + remain
-			} else {
-				// Found Authority, add the "/" back
-				ret.Endpoint = "/" + ret.Endpoint
-			}
-		} else {
-			// Without Authority specified, split target on ":"
-			ret.Scheme, ret.Endpoint, _ = split2(target, ":")
-		}
-		return ret
-	}
-	ret.Scheme, ret.Endpoint, ok = split2(target, "://")
-	if !ok {
-		if strings.HasPrefix(target, "unix:") && !skipUnixColonParsing {
-			// Handle the "unix:[local/path]" and "unix:[/absolute/path]" cases,
-			// because splitting on :// only handles the
-			// "unix://[/absolute/path]" case. Only handle if the dialer is nil,
-			// to avoid a behavior change with custom dialers.
-			return resolver.Target{Scheme: "unix", Endpoint: target[len("unix:"):]}
-		}
-		return resolver.Target{Endpoint: target}
-	}
-	ret.Authority, ret.Endpoint, ok = split2(ret.Endpoint, "/")
-	if !ok {
-		return resolver.Target{Endpoint: target}
-	}
-	if ret.Scheme == "unix" {
-		// Add the "/" back in the unix case, so the unix resolver receives the
-		// actual endpoint in the "unix://[/absolute/path]" case.
-		ret.Endpoint = "/" + ret.Endpoint
-	}
-	return ret
-}

vendor/google.golang.org/grpc/internal/internal.go

@@ -38,11 +38,10 @@ var (
 	// KeepaliveMinPingTime is the minimum ping interval.  This must be 10s by
 	// default, but tests may wish to set it lower for convenience.
 	KeepaliveMinPingTime = 10 * time.Second
-	// ParseServiceConfigForTesting is for creating a fake
+	// ParseServiceConfig parses a JSON representation of the service config.
-	// ClientConn for resolver testing only
+	ParseServiceConfig interface{} // func(string) *serviceconfig.ParseResult
-	ParseServiceConfigForTesting interface{} // func(string) *serviceconfig.ParseResult
 	// EqualServiceConfigForTesting is for testing service config generation and
-	// parsing. Both a and b should be returned by ParseServiceConfigForTesting.
+	// parsing. Both a and b should be returned by ParseServiceConfig.
 	// This function compares the config without rawJSON stripped, in case the
 	// there's difference in white space.
 	EqualServiceConfigForTesting func(a, b serviceconfig.Config) bool
@@ -86,3 +85,9 @@ const (
 	// that supports backend returned by grpclb balancer.
 	CredsBundleModeBackendFromBalancer = "backend-from-balancer"
 )
+
+// RLSLoadBalancingPolicyName is the name of the RLS LB policy.
+//
+// It currently has an experimental suffix which would be removed once
+// end-to-end testing of the policy is completed.
+const RLSLoadBalancingPolicyName = "rls_experimental"

vendor/google.golang.org/grpc/internal/metadata/metadata.go

@@ -22,6 +22,9 @@
 package metadata
 
 import (
+	"fmt"
+	"strings"
+
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/resolver"
 )
@@ -30,14 +33,38 @@ type mdKeyType string
 
 const mdKey = mdKeyType("grpc.internal.address.metadata")
 
+type mdValue metadata.MD
+
+func (m mdValue) Equal(o interface{}) bool {
+	om, ok := o.(mdValue)
+	if !ok {
+		return false
+	}
+	if len(m) != len(om) {
+		return false
+	}
+	for k, v := range m {
+		ov := om[k]
+		if len(ov) != len(v) {
+			return false
+		}
+		for i, ve := range v {
+			if ov[i] != ve {
+				return false
+			}
+		}
+	}
+	return true
+}
+
 // Get returns the metadata of addr.
 func Get(addr resolver.Address) metadata.MD {
 	attrs := addr.Attributes
 	if attrs == nil {
 		return nil
 	}
-	md, _ := attrs.Value(mdKey).(metadata.MD)
+	md, _ := attrs.Value(mdKey).(mdValue)
-	return md
+	return metadata.MD(md)
 }
 
 // Set sets (overrides) the metadata in addr.
@@ -45,6 +72,49 @@ func Get(addr resolver.Address) metadata.MD {
 // When a SubConn is created with this address, the RPCs sent on it will all
 // have this metadata.
 func Set(addr resolver.Address, md metadata.MD) resolver.Address {
-	addr.Attributes = addr.Attributes.WithValues(mdKey, md)
+	addr.Attributes = addr.Attributes.WithValue(mdKey, mdValue(md))
 	return addr
 }
+
+// Validate returns an error if the input md contains invalid keys or values.
+//
+// If the header is not a pseudo-header, the following items are checked:
+// - header names must contain one or more characters from this set [0-9 a-z _ - .].
+// - if the header-name ends with a "-bin" suffix, no validation of the header value is performed.
+// - otherwise, the header value must contain one or more characters from the set [%x20-%x7E].
+func Validate(md metadata.MD) error {
+	for k, vals := range md {
+		// pseudo-header will be ignored
+		if k[0] == ':' {
+			continue
+		}
+		// check key, for i that saving a conversion if not using for range
+		for i := 0; i < len(k); i++ {
+			r := k[i]
+			if !(r >= 'a' && r <= 'z') && !(r >= '0' && r <= '9') && r != '.' && r != '-' && r != '_' {
+				return fmt.Errorf("header key %q contains illegal characters not in [0-9a-z-_.]", k)
+			}
+		}
+		if strings.HasSuffix(k, "-bin") {
+			continue
+		}
+		// check value
+		for _, val := range vals {
+			if hasNotPrintable(val) {
+				return fmt.Errorf("header key %q contains value with non-printable ASCII characters", k)
+			}
+		}
+	}
+	return nil
+}
+
+// hasNotPrintable return true if msg contains any characters which are not in %x20-%x7E
+func hasNotPrintable(msg string) bool {
+	// for i that saving a conversion if not using for range
+	for i := 0; i < len(msg); i++ {
+		if msg[i] < 0x20 || msg[i] > 0x7E {
+			return true
+		}
+	}
+	return false
+}

vendor/google.golang.org/grpc/internal/pretty/pretty.go

@@ -0,0 +1,82 @@
+/*
+ *
+ * Copyright 2021 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// Package pretty defines helper functions to pretty-print structs for logging.
+package pretty
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+
+	"github.com/golang/protobuf/jsonpb"
+	protov1 "github.com/golang/protobuf/proto"
+	"google.golang.org/protobuf/encoding/protojson"
+	protov2 "google.golang.org/protobuf/proto"
+)
+
+const jsonIndent = "  "
+
+// ToJSON marshals the input into a json string.
+//
+// If marshal fails, it falls back to fmt.Sprintf("%+v").
+func ToJSON(e interface{}) string {
+	switch ee := e.(type) {
+	case protov1.Message:
+		mm := jsonpb.Marshaler{Indent: jsonIndent}
+		ret, err := mm.MarshalToString(ee)
+		if err != nil {
+			// This may fail for proto.Anys, e.g. for xDS v2, LDS, the v2
+			// messages are not imported, and this will fail because the message
+			// is not found.
+			return fmt.Sprintf("%+v", ee)
+		}
+		return ret
+	case protov2.Message:
+		mm := protojson.MarshalOptions{
+			Multiline: true,
+			Indent:    jsonIndent,
+		}
+		ret, err := mm.Marshal(ee)
+		if err != nil {
+			// This may fail for proto.Anys, e.g. for xDS v2, LDS, the v2
+			// messages are not imported, and this will fail because the message
+			// is not found.
+			return fmt.Sprintf("%+v", ee)
+		}
+		return string(ret)
+	default:
+		ret, err := json.MarshalIndent(ee, "", jsonIndent)
+		if err != nil {
+			return fmt.Sprintf("%+v", ee)
+		}
+		return string(ret)
+	}
+}
+
+// FormatJSON formats the input json bytes with indentation.
+//
+// If Indent fails, it returns the unchanged input as string.
+func FormatJSON(b []byte) string {
+	var out bytes.Buffer
+	err := json.Indent(&out, b, "", jsonIndent)
+	if err != nil {
+		return string(b)
+	}
+	return out.String()
+}

vendor/google.golang.org/grpc/internal/resolver/config_selector.go

@@ -117,9 +117,12 @@ type ClientInterceptor interface {
 	NewStream(ctx context.Context, ri RPCInfo, done func(), newStream func(ctx context.Context, done func()) (ClientStream, error)) (ClientStream, error)
 }
 
-// ServerInterceptor is unimplementable; do not use.
+// ServerInterceptor is an interceptor for incoming RPC's on gRPC server side.
 type ServerInterceptor interface {
-	notDefined()
+	// AllowRPC checks if an incoming RPC is allowed to proceed based on
+	// information about connection RPC was received on, and HTTP Headers. This
+	// information will be piped into context.
+	AllowRPC(ctx context.Context) error // TODO: Make this a real interceptor for filters such as rate limiting.
 }
 
 type csKeyType string
@@ -129,7 +132,7 @@ const csKey = csKeyType("grpc.internal.resolver.configSelector")
 // SetConfigSelector sets the config selector in state and returns the new
 // state.
 func SetConfigSelector(state resolver.State, cs ConfigSelector) resolver.State {
-	state.Attributes = state.Attributes.WithValues(csKey, cs)
+	state.Attributes = state.Attributes.WithValue(csKey, cs)
 	return state
 }
 

vendor/google.golang.org/grpc/internal/resolver/dns/dns_resolver.go

@@ -277,18 +277,13 @@ func (d *dnsResolver) lookupSRV() ([]resolver.Address, error) {
 	return newAddrs, nil
 }
 
-var filterError = func(err error) error {
+func handleDNSError(err error, lookupType string) error {
 	if dnsErr, ok := err.(*net.DNSError); ok && !dnsErr.IsTimeout && !dnsErr.IsTemporary {
 		// Timeouts and temporary errors should be communicated to gRPC to
 		// attempt another DNS query (with backoff).  Other errors should be
 		// suppressed (they may represent the absence of a TXT record).
 		return nil
 	}
-	return err
-}
-
-func handleDNSError(err error, lookupType string) error {
-	err = filterError(err)
 	if err != nil {
 		err = fmt.Errorf("dns: %v record lookup error: %v", lookupType, err)
 		logger.Info(err)
@@ -323,12 +318,12 @@ func (d *dnsResolver) lookupTXT() *serviceconfig.ParseResult {
 }
 
 func (d *dnsResolver) lookupHost() ([]resolver.Address, error) {
-	var newAddrs []resolver.Address
 	addrs, err := d.resolver.LookupHost(d.ctx, d.host)
 	if err != nil {
 		err = handleDNSError(err, "A")
 		return nil, err
 	}
+	newAddrs := make([]resolver.Address, 0, len(addrs))
 	for _, a := range addrs {
 		ip, ok := formatIP(a)
 		if !ok {

vendor/google.golang.org/grpc/internal/resolver/unix/unix.go

@@ -37,7 +37,17 @@ func (b *builder) Build(target resolver.Target, cc resolver.ClientConn, _ resolv
 	if target.Authority != "" {
 		return nil, fmt.Errorf("invalid (non-empty) authority: %v", target.Authority)
 	}
-	addr := resolver.Address{Addr: target.Endpoint}
+
+	// gRPC was parsing the dial target manually before PR #4817, and we
+	// switched to using url.Parse() in that PR. To avoid breaking existing
+	// resolver implementations we ended up stripping the leading "/" from the
+	// endpoint. This obviously does not work for the "unix" scheme. Hence we
+	// end up using the parsed URL instead.
+	endpoint := target.URL.Path
+	if endpoint == "" {
+		endpoint = target.URL.Opaque
+	}
+	addr := resolver.Address{Addr: endpoint}
 	if b.scheme == unixAbstractScheme {
 		// prepend "\x00" to address for unix-abstract
 		addr.Addr = "\x00" + addr.Addr

vendor/google.golang.org/grpc/internal/serviceconfig/serviceconfig.go

@@ -78,6 +78,7 @@ func (bc *BalancerConfig) UnmarshalJSON(b []byte) error {
 		return err
 	}
 
+	var names []string
 	for i, lbcfg := range ir {
 		if len(lbcfg) != 1 {
 			return fmt.Errorf("invalid loadBalancingConfig: entry %v does not contain exactly 1 policy/config pair: %q", i, lbcfg)
@@ -92,6 +93,7 @@ func (bc *BalancerConfig) UnmarshalJSON(b []byte) error {
 		for name, jsonCfg = range lbcfg {
 		}
 
+		names = append(names, name)
 		builder := balancer.Get(name)
 		if builder == nil {
 			// If the balancer is not registered, move on to the next config.
@@ -120,7 +122,7 @@ func (bc *BalancerConfig) UnmarshalJSON(b []byte) error {
 	// return. This means we had a loadBalancingConfig slice but did not
 	// encounter a registered policy. The config is considered invalid in this
 	// case.
-	return fmt.Errorf("invalid loadBalancingConfig: no supported policies found")
+	return fmt.Errorf("invalid loadBalancingConfig: no supported policies found in %v", names)
 }
 
 // MethodConfig defines the configuration recommended by the service providers for a

vendor/google.golang.org/grpc/internal/syscall/syscall_linux.go

@@ -1,5 +1,3 @@
-// +build !appengine
-
 /*
  *
  * Copyright 2018 gRPC authors.

vendor/google.golang.org/grpc/internal/syscall/syscall_nonlinux.go

@@ -1,4 +1,5 @@
-// +build !linux appengine
+//go:build !linux
+// +build !linux
 
 /*
  *
@@ -35,41 +36,41 @@ var logger = grpclog.Component("core")
 
 func log() {
 	once.Do(func() {
-		logger.Info("CPU time info is unavailable on non-linux or appengine environment.")
+		logger.Info("CPU time info is unavailable on non-linux environments.")
 	})
 }
 
-// GetCPUTime returns the how much CPU time has passed since the start of this process.
+// GetCPUTime returns the how much CPU time has passed since the start of this
-// It always returns 0 under non-linux or appengine environment.
+// process. It always returns 0 under non-linux environments.
 func GetCPUTime() int64 {
 	log()
 	return 0
 }
 
-// Rusage is an empty struct under non-linux or appengine environment.
+// Rusage is an empty struct under non-linux environments.
 type Rusage struct{}
 
-// GetRusage is a no-op function under non-linux or appengine environment.
+// GetRusage is a no-op function under non-linux environments.
 func GetRusage() *Rusage {
 	log()
 	return nil
 }
 
 // CPUTimeDiff returns the differences of user CPU time and system CPU time used
-// between two Rusage structs. It a no-op function for non-linux or appengine environment.
+// between two Rusage structs. It a no-op function for non-linux environments.
 func CPUTimeDiff(first *Rusage, latest *Rusage) (float64, float64) {
 	log()
 	return 0, 0
 }
 
-// SetTCPUserTimeout is a no-op function under non-linux or appengine environments
+// SetTCPUserTimeout is a no-op function under non-linux environments.
 func SetTCPUserTimeout(conn net.Conn, timeout time.Duration) error {
 	log()
 	return nil
 }
 
-// GetTCPUserTimeout is a no-op function under non-linux or appengine environments
+// GetTCPUserTimeout is a no-op function under non-linux environments.
-// a negative return value indicates the operation is not supported
+// A negative return value indicates the operation is not supported
 func GetTCPUserTimeout(conn net.Conn) (int, error) {
 	log()
 	return -1, nil

vendor/google.golang.org/grpc/internal/transport/controlbuf.go

@@ -133,9 +133,11 @@ type cleanupStream struct {
 func (c *cleanupStream) isTransportResponseFrame() bool { return c.rst } // Results in a RST_STREAM
 
 type earlyAbortStream struct {
+	httpStatus     uint32
 	streamID       uint32
 	contentSubtype string
 	status         *status.Status
+	rst            bool
 }
 
 func (*earlyAbortStream) isTransportResponseFrame() bool { return false }
@@ -771,9 +773,12 @@ func (l *loopyWriter) earlyAbortStreamHandler(eas *earlyAbortStream) error {
 	if l.side == clientSide {
 		return errors.New("earlyAbortStream not handled on client")
 	}
-
+	// In case the caller forgets to set the http status, default to 200.
+	if eas.httpStatus == 0 {
+		eas.httpStatus = 200
+	}
 	headerFields := []hpack.HeaderField{
-		{Name: ":status", Value: "200"},
+		{Name: ":status", Value: strconv.Itoa(int(eas.httpStatus))},
 		{Name: "content-type", Value: grpcutil.ContentType(eas.contentSubtype)},
 		{Name: "grpc-status", Value: strconv.Itoa(int(eas.status.Code()))},
 		{Name: "grpc-message", Value: encodeGrpcMessage(eas.status.Message())},
@@ -782,6 +787,11 @@ func (l *loopyWriter) earlyAbortStreamHandler(eas *earlyAbortStream) error {
 	if err := l.writeHeader(eas.streamID, true, headerFields, nil); err != nil {
 		return err
 	}
+	if eas.rst {
+		if err := l.framer.fr.WriteRSTStream(eas.streamID, http2.ErrCodeNo); err != nil {
+			return err
+		}
+	}
 	return nil
 }
 

vendor/google.golang.org/grpc/internal/transport/flowcontrol.go

@@ -136,12 +136,10 @@ type inFlow struct {
 
 // newLimit updates the inflow window to a new value n.
 // It assumes that n is always greater than the old limit.
-func (f *inFlow) newLimit(n uint32) uint32 {
+func (f *inFlow) newLimit(n uint32) {
 	f.mu.Lock()
-	d := n - f.limit
 	f.limit = n
 	f.mu.Unlock()
-	return d
 }
 
 func (f *inFlow) maybeAdjust(n uint32) uint32 {

vendor/google.golang.org/grpc/internal/transport/http2_client.go

@@ -25,6 +25,7 @@ import (
 	"math"
 	"net"
 	"net/http"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"sync"
@@ -131,7 +132,7 @@ type http2Client struct {
 	kpDormant bool
 
 	// Fields below are for channelz metric collection.
-	channelzID int64 // channelz unique identification number
+	channelzID *channelz.Identifier
 	czData     *channelzData
 
 	onGoAway func(GoAwayReason)
@@ -146,13 +147,20 @@ func dial(ctx context.Context, fn func(context.Context, string) (net.Conn, error
 	address := addr.Addr
 	networkType, ok := networktype.Get(addr)
 	if fn != nil {
+		// Special handling for unix scheme with custom dialer. Back in the day,
+		// we did not have a unix resolver and therefore targets with a unix
+		// scheme would end up using the passthrough resolver. So, user's used a
+		// custom dialer in this case and expected the original dial target to
+		// be passed to the custom dialer. Now, we have a unix resolver. But if
+		// a custom dialer is specified, we want to retain the old behavior in
+		// terms of the address being passed to the custom dialer.
 		if networkType == "unix" && !strings.HasPrefix(address, "\x00") {
-			// For backward compatibility, if the user dialed "unix:///path",
+			// Supported unix targets are either "unix://absolute-path" or
-			// the passthrough resolver would be used and the user's custom
+			// "unix:relative-path".
-			// dialer would see "unix:///path". Since the unix resolver is used
+			if filepath.IsAbs(address) {
-			// and the address is now "/path", prepend "unix://" so the user's
+				return fn(ctx, "unix://"+address)
-			// custom dialer sees the same address.
+			}
-			return fn(ctx, "unix://"+address)
+			return fn(ctx, "unix:"+address)
 		}
 		return fn(ctx, address)
 	}
@@ -193,6 +201,12 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts
 		}
 	}()
 
+	// gRPC, resolver, balancer etc. can specify arbitrary data in the
+	// Attributes field of resolver.Address, which is shoved into connectCtx
+	// and passed to the dialer and credential handshaker. This makes it possible for
+	// address specific arbitrary data to reach custom dialers and credential handshakers.
+	connectCtx = icredentials.NewClientHandshakeInfoContext(connectCtx, credentials.ClientHandshakeInfo{Attributes: addr.Attributes})
+
 	conn, err := dial(connectCtx, opts.Dialer, addr, opts.UseProxy, opts.UserAgent)
 	if err != nil {
 		if opts.FailOnNonTempDialError {
@@ -237,11 +251,6 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts
 		}
 	}
 	if transportCreds != nil {
-		// gRPC, resolver, balancer etc. can specify arbitrary data in the
-		// Attributes field of resolver.Address, which is shoved into connectCtx
-		// and passed to the credential handshaker. This makes it possible for
-		// address specific arbitrary data to reach the credential handshaker.
-		connectCtx = icredentials.NewClientHandshakeInfoContext(connectCtx, credentials.ClientHandshakeInfo{Attributes: addr.Attributes})
 		rawConn := conn
 		// Pull the deadline from the connectCtx, which will be used for
 		// timeouts in the authentication protocol handshake. Can ignore the
@@ -342,8 +351,9 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts
 		}
 		t.statsHandler.HandleConn(t.ctx, connBegin)
 	}
-	if channelz.IsOn() {
+	t.channelzID, err = channelz.RegisterNormalSocket(t, opts.ChannelzParentID, fmt.Sprintf("%s -> %s", t.localAddr, t.remoteAddr))
-		t.channelzID = channelz.RegisterNormalSocket(t, opts.ChannelzParentID, fmt.Sprintf("%s -> %s", t.localAddr, t.remoteAddr))
+	if err != nil {
+		return nil, err
 	}
 	if t.keepaliveEnabled {
 		t.kpDormancyCond = sync.NewCond(&t.mu)
@@ -579,7 +589,7 @@ func (t *http2Client) getTrAuthData(ctx context.Context, audience string) (map[s
 				return nil, err
 			}
 
-			return nil, status.Errorf(codes.Unauthenticated, "transport: %v", err)
+			return nil, status.Errorf(codes.Unauthenticated, "transport: per-RPC creds failed due to error: %v", err)
 		}
 		for k, v := range data {
 			// Capital header names are illegal in HTTP/2.
@@ -616,12 +626,21 @@ func (t *http2Client) getCallAuthData(ctx context.Context, audience string, call
 	return callAuthData, nil
 }
 
-// NewStreamError wraps an error and reports additional information.
+// NewStreamError wraps an error and reports additional information.  Typically
+// NewStream errors result in transparent retry, as they mean nothing went onto
+// the wire.  However, there are two notable exceptions:
+//
+// 1. If the stream headers violate the max header list size allowed by the
+//    server.  It's possible this could succeed on another transport, even if
+//    it's unlikely, but do not transparently retry.
+// 2. If the credentials errored when requesting their headers.  In this case,
+//    it's possible a retry can fix the problem, but indefinitely transparently
+//    retrying is not appropriate as it is likely the credentials, if they can
+//    eventually succeed, would need I/O to do so.
 type NewStreamError struct {
 	Err error
 
-	DoNotRetry  bool
+	AllowTransparentRetry bool
-	PerformedIO bool
 }
 
 func (e NewStreamError) Error() string {
@@ -630,25 +649,11 @@ func (e NewStreamError) Error() string {
 
 // NewStream creates a stream and registers it into the transport as "active"
 // streams.  All non-nil errors returned will be *NewStreamError.
-func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Stream, err error) {
+func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (*Stream, error) {
-	defer func() {
-		if err != nil {
-			nse, ok := err.(*NewStreamError)
-			if !ok {
-				nse = &NewStreamError{Err: err}
-			}
-			if len(t.perRPCCreds) > 0 || callHdr.Creds != nil {
-				// We may have performed I/O in the per-RPC creds callback, so do not
-				// allow transparent retry.
-				nse.PerformedIO = true
-			}
-			err = nse
-		}
-	}()
 	ctx = peer.NewContext(ctx, t.getPeer())
 	headerFields, err := t.createHeaderFields(ctx, callHdr)
 	if err != nil {
-		return nil, err
+		return nil, &NewStreamError{Err: err, AllowTransparentRetry: false}
 	}
 	s := t.newStream(ctx, callHdr)
 	cleanup := func(err error) {
@@ -748,23 +753,24 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea
 			return true
 		}, hdr)
 		if err != nil {
-			return nil, err
+			// Connection closed.
+			return nil, &NewStreamError{Err: err, AllowTransparentRetry: true}
 		}
 		if success {
 			break
 		}
 		if hdrListSizeErr != nil {
-			return nil, &NewStreamError{Err: hdrListSizeErr, DoNotRetry: true}
+			return nil, &NewStreamError{Err: hdrListSizeErr}
 		}
 		firstTry = false
 		select {
 		case <-ch:
-		case <-s.ctx.Done():
+		case <-ctx.Done():
-			return nil, ContextErr(s.ctx.Err())
+			return nil, &NewStreamError{Err: ContextErr(ctx.Err())}
 		case <-t.goAway:
-			return nil, errStreamDrain
+			return nil, &NewStreamError{Err: errStreamDrain, AllowTransparentRetry: true}
 		case <-t.ctx.Done():
-			return nil, ErrConnClosing
+			return nil, &NewStreamError{Err: ErrConnClosing, AllowTransparentRetry: true}
 		}
 	}
 	if t.statsHandler != nil {
@@ -893,9 +899,7 @@ func (t *http2Client) Close(err error) {
 	t.controlBuf.finish()
 	t.cancel()
 	t.conn.Close()
-	if channelz.IsOn() {
+	channelz.RemoveEntry(t.channelzID)
-		channelz.RemoveEntry(t.channelzID)
-	}
 	// Append info about previous goaways if there were any, since this may be important
 	// for understanding the root cause for this connection to be closed.
 	_, goAwayDebugMessage := t.GetGoAwayReason()
@@ -1077,7 +1081,7 @@ func (t *http2Client) handleData(f *http2.DataFrame) {
 	}
 	// The server has closed the stream without sending trailers.  Record that
 	// the read direction is closed, and set the status appropriately.
-	if f.FrameHeader.Flags.Has(http2.FlagDataEndStream) {
+	if f.StreamEnded() {
 		t.closeStream(s, io.EOF, false, http2.ErrCodeNo, status.New(codes.Internal, "server closed the stream without sending trailers"), nil, true)
 	}
 }
@@ -1407,26 +1411,6 @@ func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) {
 	}
 
 	isHeader := false
-	defer func() {
-		if t.statsHandler != nil {
-			if isHeader {
-				inHeader := &stats.InHeader{
-					Client:      true,
-					WireLength:  int(frame.Header().Length),
-					Header:      s.header.Copy(),
-					Compression: s.recvCompress,
-				}
-				t.statsHandler.HandleRPC(s.ctx, inHeader)
-			} else {
-				inTrailer := &stats.InTrailer{
-					Client:     true,
-					WireLength: int(frame.Header().Length),
-					Trailer:    s.trailer.Copy(),
-				}
-				t.statsHandler.HandleRPC(s.ctx, inTrailer)
-			}
-		}
-	}()
 
 	// If headerChan hasn't been closed yet
 	if atomic.CompareAndSwapUint32(&s.headerChanClosed, 0, 1) {
@@ -1448,6 +1432,25 @@ func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) {
 		close(s.headerChan)
 	}
 
+	if t.statsHandler != nil {
+		if isHeader {
+			inHeader := &stats.InHeader{
+				Client:      true,
+				WireLength:  int(frame.Header().Length),
+				Header:      metadata.MD(mdata).Copy(),
+				Compression: s.recvCompress,
+			}
+			t.statsHandler.HandleRPC(s.ctx, inHeader)
+		} else {
+			inTrailer := &stats.InTrailer{
+				Client:     true,
+				WireLength: int(frame.Header().Length),
+				Trailer:    metadata.MD(mdata).Copy(),
+			}
+			t.statsHandler.HandleRPC(s.ctx, inTrailer)
+		}
+	}
+
 	if !endStream {
 		return
 	}
@@ -1553,7 +1556,7 @@ func minTime(a, b time.Duration) time.Duration {
 	return b
 }
 
-// keepalive running in a separate goroutune makes sure the connection is alive by sending pings.
+// keepalive running in a separate goroutine makes sure the connection is alive by sending pings.
 func (t *http2Client) keepalive() {
 	p := &ping{data: [8]byte{}}
 	// True iff a ping has been sent, and no data has been received since then.

vendor/google.golang.org/grpc/internal/transport/http2_server.go

@@ -21,7 +21,6 @@ package transport
 import (
 	"bytes"
 	"context"
-	"errors"
 	"fmt"
 	"io"
 	"math"
@@ -36,6 +35,7 @@ import (
 	"golang.org/x/net/http2"
 	"golang.org/x/net/http2/hpack"
 	"google.golang.org/grpc/internal/grpcutil"
+	"google.golang.org/grpc/internal/syscall"
 
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/credentials"
@@ -52,10 +52,10 @@ import (
 var (
 	// ErrIllegalHeaderWrite indicates that setting header is illegal because of
 	// the stream's state.
-	ErrIllegalHeaderWrite = errors.New("transport: the stream is done or WriteHeader was already called")
+	ErrIllegalHeaderWrite = status.Error(codes.Internal, "transport: SendHeader called multiple times")
 	// ErrHeaderListSizeLimitViolation indicates that the header list size is larger
 	// than the limit set by peer.
-	ErrHeaderListSizeLimitViolation = errors.New("transport: trying to send header list size larger than the limit set by peer")
+	ErrHeaderListSizeLimitViolation = status.Error(codes.Internal, "transport: trying to send header list size larger than the limit set by peer")
 )
 
 // serverConnectionCounter counts the number of connections a server has seen
@@ -73,7 +73,6 @@ type http2Server struct {
 	writerDone  chan struct{} // sync point to enable testing.
 	remoteAddr  net.Addr
 	localAddr   net.Addr
-	maxStreamID uint32               // max stream ID ever seen
 	authInfo    credentials.AuthInfo // auth info about the connection
 	inTapHandle tap.ServerInHandle
 	framer      *framer
@@ -118,21 +117,42 @@ type http2Server struct {
 	idle time.Time
 
 	// Fields below are for channelz metric collection.
-	channelzID int64 // channelz unique identification number
+	channelzID *channelz.Identifier
 	czData     *channelzData
 	bufferPool *bufferPool
 
 	connectionID uint64
+
+	// maxStreamMu guards the maximum stream ID
+	// This lock may not be taken if mu is already held.
+	maxStreamMu sync.Mutex
+	maxStreamID uint32 // max stream ID ever seen
 }
 
 // NewServerTransport creates a http2 transport with conn and configuration
 // options from config.
 //
 // It returns a non-nil transport and a nil error on success. On failure, it
-// returns a non-nil transport and a nil-error. For a special case where the
+// returns a nil transport and a non-nil error. For a special case where the
 // underlying conn gets closed before the client preface could be read, it
 // returns a nil transport and a nil error.
 func NewServerTransport(conn net.Conn, config *ServerConfig) (_ ServerTransport, err error) {
+	var authInfo credentials.AuthInfo
+	rawConn := conn
+	if config.Credentials != nil {
+		var err error
+		conn, authInfo, err = config.Credentials.ServerHandshake(rawConn)
+		if err != nil {
+			// ErrConnDispatched means that the connection was dispatched away
+			// from gRPC; those connections should be left open. io.EOF means
+			// the connection was closed before handshaking completed, which can
+			// happen naturally from probers. Return these errors directly.
+			if err == credentials.ErrConnDispatched || err == io.EOF {
+				return nil, err
+			}
+			return nil, connectionErrorf(false, err, "ServerHandshake(%q) failed: %v", rawConn.RemoteAddr(), err)
+		}
+	}
 	writeBufSize := config.WriteBufferSize
 	readBufSize := config.ReadBufferSize
 	maxHeaderListSize := defaultServerMaxHeaderListSize
@@ -211,18 +231,24 @@ func NewServerTransport(conn net.Conn, config *ServerConfig) (_ ServerTransport,
 	if kp.Timeout == 0 {
 		kp.Timeout = defaultServerKeepaliveTimeout
 	}
+	if kp.Time != infinity {
+		if err = syscall.SetTCPUserTimeout(conn, kp.Timeout); err != nil {
+			return nil, connectionErrorf(false, err, "transport: failed to set TCP_USER_TIMEOUT: %v", err)
+		}
+	}
 	kep := config.KeepalivePolicy
 	if kep.MinTime == 0 {
 		kep.MinTime = defaultKeepalivePolicyMinTime
 	}
+
 	done := make(chan struct{})
 	t := &http2Server{
-		ctx:               context.Background(),
+		ctx:               setConnection(context.Background(), rawConn),
 		done:              done,
 		conn:              conn,
 		remoteAddr:        conn.RemoteAddr(),
 		localAddr:         conn.LocalAddr(),
-		authInfo:          config.AuthInfo,
+		authInfo:          authInfo,
 		framer:            framer,
 		readerDone:        make(chan struct{}),
 		writerDone:        make(chan struct{}),
@@ -254,12 +280,12 @@ func NewServerTransport(conn net.Conn, config *ServerConfig) (_ ServerTransport,
 		connBegin := &stats.ConnBegin{}
 		t.stats.HandleConn(t.ctx, connBegin)
 	}
-	if channelz.IsOn() {
+	t.channelzID, err = channelz.RegisterNormalSocket(t, config.ChannelzParentID, fmt.Sprintf("%s -> %s", t.remoteAddr, t.localAddr))
-		t.channelzID = channelz.RegisterNormalSocket(t, config.ChannelzParentID, fmt.Sprintf("%s -> %s", t.remoteAddr, t.localAddr))
+	if err != nil {
+		return nil, err
 	}
 
 	t.connectionID = atomic.AddUint64(&serverConnectionCounter, 1)
-
 	t.framer.writer.Flush()
 
 	defer func() {
@@ -273,10 +299,11 @@ func NewServerTransport(conn net.Conn, config *ServerConfig) (_ ServerTransport,
 	if _, err := io.ReadFull(t.conn, preface); err != nil {
 		// In deployments where a gRPC server runs behind a cloud load balancer
 		// which performs regular TCP level health checks, the connection is
-		// closed immediately by the latter. Skipping the error here will help
+		// closed immediately by the latter.  Returning io.EOF here allows the
-		// reduce log clutter.
+		// grpc server implementation to recognize this scenario and suppress
+		// logging to reduce spam.
 		if err == io.EOF {
-			return nil, nil
+			return nil, io.EOF
 		}
 		return nil, connectionErrorf(false, err, "transport: http2Server.HandleStreams failed to receive the preface from client: %v", err)
 	}
@@ -316,6 +343,10 @@ func NewServerTransport(conn net.Conn, config *ServerConfig) (_ ServerTransport,
 
 // operateHeader takes action on the decoded headers.
 func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(*Stream), traceCtx func(context.Context, string) context.Context) (fatal bool) {
+	// Acquire max stream ID lock for entire duration
+	t.maxStreamMu.Lock()
+	defer t.maxStreamMu.Unlock()
+
 	streamID := frame.Header().StreamID
 
 	// frame.Truncated is set to true when framer detects that the current header
@@ -330,6 +361,15 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(
 		return false
 	}
 
+	if streamID%2 != 1 || streamID <= t.maxStreamID {
+		// illegal gRPC stream id.
+		if logger.V(logLevel) {
+			logger.Errorf("transport: http2Server.HandleStreams received an illegal stream id: %v", streamID)
+		}
+		return true
+	}
+	t.maxStreamID = streamID
+
 	buf := newRecvBuffer()
 	s := &Stream{
 		id:  streamID,
@@ -337,7 +377,6 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(
 		buf: buf,
 		fc:  &inFlow{limit: uint32(t.initialWindowSize)},
 	}
-
 	var (
 		// If a gRPC Response-Headers has already been received, then it means
 		// that the peer is speaking gRPC and we are in gRPC mode.
@@ -373,6 +412,13 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(
 			if timeout, err = decodeTimeout(hf.Value); err != nil {
 				headerError = true
 			}
+		// "Transports must consider requests containing the Connection header
+		// as malformed." - A41
+		case "connection":
+			if logger.V(logLevel) {
+				logger.Errorf("transport: http2Server.operateHeaders parsed a :connection header which makes a request malformed as per the HTTP/2 spec")
+			}
+			headerError = true
 		default:
 			if isReservedHeader(hf.Name) && !isWhitelistedHeader(hf.Name) {
 				break
@@ -387,6 +433,26 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(
 		}
 	}
 
+	// "If multiple Host headers or multiple :authority headers are present, the
+	// request must be rejected with an HTTP status code 400 as required by Host
+	// validation in RFC 7230 §5.4, gRPC status code INTERNAL, or RST_STREAM
+	// with HTTP/2 error code PROTOCOL_ERROR." - A41. Since this is a HTTP/2
+	// error, this takes precedence over a client not speaking gRPC.
+	if len(mdata[":authority"]) > 1 || len(mdata["host"]) > 1 {
+		errMsg := fmt.Sprintf("num values of :authority: %v, num values of host: %v, both must only have 1 value as per HTTP/2 spec", len(mdata[":authority"]), len(mdata["host"]))
+		if logger.V(logLevel) {
+			logger.Errorf("transport: %v", errMsg)
+		}
+		t.controlBuf.put(&earlyAbortStream{
+			httpStatus:     400,
+			streamID:       streamID,
+			contentSubtype: s.contentSubtype,
+			status:         status.New(codes.Internal, errMsg),
+			rst:            !frame.StreamEnded(),
+		})
+		return false
+	}
+
 	if !isGRPC || headerError {
 		t.controlBuf.put(&cleanupStream{
 			streamID: streamID,
@@ -397,6 +463,19 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(
 		return false
 	}
 
+	// "If :authority is missing, Host must be renamed to :authority." - A41
+	if len(mdata[":authority"]) == 0 {
+		// No-op if host isn't present, no eventual :authority header is a valid
+		// RPC.
+		if host, ok := mdata["host"]; ok {
+			mdata[":authority"] = host
+			delete(mdata, "host")
+		}
+	} else {
+		// "If :authority is present, Host must be discarded" - A41
+		delete(mdata, "host")
+	}
+
 	if frame.StreamEnded() {
 		// s is just created by the caller. No lock needed.
 		s.state = streamReadDone
@@ -441,26 +520,18 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(
 		s.cancel()
 		return false
 	}
-	if streamID%2 != 1 || streamID <= t.maxStreamID {
-		t.mu.Unlock()
-		// illegal gRPC stream id.
-		if logger.V(logLevel) {
-			logger.Errorf("transport: http2Server.HandleStreams received an illegal stream id: %v", streamID)
-		}
-		s.cancel()
-		return true
-	}
-	t.maxStreamID = streamID
 	if httpMethod != http.MethodPost {
 		t.mu.Unlock()
+		errMsg := fmt.Sprintf("http2Server.operateHeaders parsed a :method field: %v which should be POST", httpMethod)
 		if logger.V(logLevel) {
-			logger.Infof("transport: http2Server.operateHeaders parsed a :method field: %v which should be POST", httpMethod)
+			logger.Infof("transport: %v", errMsg)
 		}
-		t.controlBuf.put(&cleanupStream{
+		t.controlBuf.put(&earlyAbortStream{
-			streamID: streamID,
+			httpStatus:     405,
-			rst:      true,
+			streamID:       streamID,
-			rstCode:  http2.ErrCodeProtocol,
+			contentSubtype: s.contentSubtype,
-			onWrite:  func() {},
+			status:         status.New(codes.Internal, errMsg),
+			rst:            !frame.StreamEnded(),
 		})
 		s.cancel()
 		return false
@@ -477,9 +548,11 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(
 				stat = status.New(codes.PermissionDenied, err.Error())
 			}
 			t.controlBuf.put(&earlyAbortStream{
+				httpStatus:     200,
 				streamID:       s.id,
 				contentSubtype: s.contentSubtype,
 				status:         stat,
+				rst:            !frame.StreamEnded(),
 			})
 			return false
 		}
@@ -717,7 +790,7 @@ func (t *http2Server) handleData(f *http2.DataFrame) {
 			s.write(recvMsg{buffer: buffer})
 		}
 	}
-	if f.Header().Flags.Has(http2.FlagDataEndStream) {
+	if f.StreamEnded() {
 		// Received the end of stream from the client.
 		s.compareAndSwapState(streamActive, streamReadDone)
 		s.write(recvMsg{err: io.EOF})
@@ -861,11 +934,25 @@ func (t *http2Server) checkForHeaderListSize(it interface{}) bool {
 	return true
 }
 
+func (t *http2Server) streamContextErr(s *Stream) error {
+	select {
+	case <-t.done:
+		return ErrConnClosing
+	default:
+	}
+	return ContextErr(s.ctx.Err())
+}
+
 // WriteHeader sends the header metadata md back to the client.
 func (t *http2Server) WriteHeader(s *Stream, md metadata.MD) error {
-	if s.updateHeaderSent() || s.getState() == streamDone {
+	if s.updateHeaderSent() {
 		return ErrIllegalHeaderWrite
 	}
+
+	if s.getState() == streamDone {
+		return t.streamContextErr(s)
+	}
+
 	s.hdrMu.Lock()
 	if md.Len() > 0 {
 		if s.header.Len() > 0 {
@@ -876,7 +963,7 @@ func (t *http2Server) WriteHeader(s *Stream, md metadata.MD) error {
 	}
 	if err := t.writeHeaderLocked(s); err != nil {
 		s.hdrMu.Unlock()
-		return err
+		return status.Convert(err).Err()
 	}
 	s.hdrMu.Unlock()
 	return nil
@@ -992,23 +1079,12 @@ func (t *http2Server) WriteStatus(s *Stream, st *status.Status) error {
 func (t *http2Server) Write(s *Stream, hdr []byte, data []byte, opts *Options) error {
 	if !s.isHeaderSent() { // Headers haven't been written yet.
 		if err := t.WriteHeader(s, nil); err != nil {
-			if _, ok := err.(ConnectionError); ok {
+			return err
-				return err
-			}
-			// TODO(mmukhi, dfawley): Make sure this is the right code to return.
-			return status.Errorf(codes.Internal, "transport: %v", err)
 		}
 	} else {
 		// Writing headers checks for this condition.
 		if s.getState() == streamDone {
-			// TODO(mmukhi, dfawley): Should the server write also return io.EOF?
+			return t.streamContextErr(s)
-			s.cancel()
-			select {
-			case <-t.done:
-				return ErrConnClosing
-			default:
-			}
-			return ContextErr(s.ctx.Err())
 		}
 	}
 	df := &dataFrame{
@@ -1018,12 +1094,7 @@ func (t *http2Server) Write(s *Stream, hdr []byte, data []byte, opts *Options) e
 		onEachWrite: t.setResetPingStrikes,
 	}
 	if err := s.wq.get(int32(len(hdr) + len(data))); err != nil {
-		select {
+		return t.streamContextErr(s)
-		case <-t.done:
-			return ErrConnClosing
-		default:
-		}
-		return ContextErr(s.ctx.Err())
 	}
 	return t.controlBuf.put(df)
 }
@@ -1146,9 +1217,7 @@ func (t *http2Server) Close() {
 	if err := t.conn.Close(); err != nil && logger.V(logLevel) {
 		logger.Infof("transport: error closing conn during Close: %v", err)
 	}
-	if channelz.IsOn() {
+	channelz.RemoveEntry(t.channelzID)
-		channelz.RemoveEntry(t.channelzID)
-	}
 	// Cancel all active streams.
 	for _, s := range streams {
 		s.cancel()
@@ -1161,10 +1230,6 @@ func (t *http2Server) Close() {
 
 // deleteStream deletes the stream s from transport's active streams.
 func (t *http2Server) deleteStream(s *Stream, eosReceived bool) {
-	// In case stream sending and receiving are invoked in separate
-	// goroutines (e.g., bi-directional streaming), cancel needs to be
-	// called to interrupt the potential blocking on other goroutines.
-	s.cancel()
 
 	t.mu.Lock()
 	if _, ok := t.activeStreams[s.id]; ok {
@@ -1186,6 +1251,11 @@ func (t *http2Server) deleteStream(s *Stream, eosReceived bool) {
 
 // finishStream closes the stream and puts the trailing headerFrame into controlbuf.
 func (t *http2Server) finishStream(s *Stream, rst bool, rstCode http2.ErrCode, hdr *headerFrame, eosReceived bool) {
+	// In case stream sending and receiving are invoked in separate
+	// goroutines (e.g., bi-directional streaming), cancel needs to be
+	// called to interrupt the potential blocking on other goroutines.
+	s.cancel()
+
 	oldState := s.swapState(streamDone)
 	if oldState == streamDone {
 		// If the stream was already done, return.
@@ -1205,6 +1275,11 @@ func (t *http2Server) finishStream(s *Stream, rst bool, rstCode http2.ErrCode, h
 
 // closeStream clears the footprint of a stream when the stream is not needed any more.
 func (t *http2Server) closeStream(s *Stream, rst bool, rstCode http2.ErrCode, eosReceived bool) {
+	// In case stream sending and receiving are invoked in separate
+	// goroutines (e.g., bi-directional streaming), cancel needs to be
+	// called to interrupt the potential blocking on other goroutines.
+	s.cancel()
+
 	s.swapState(streamDone)
 	t.deleteStream(s, eosReceived)
 
@@ -1235,20 +1310,23 @@ var goAwayPing = &ping{data: [8]byte{1, 6, 1, 8, 0, 3, 3, 9}}
 // Handles outgoing GoAway and returns true if loopy needs to put itself
 // in draining mode.
 func (t *http2Server) outgoingGoAwayHandler(g *goAway) (bool, error) {
+	t.maxStreamMu.Lock()
 	t.mu.Lock()
 	if t.state == closing { // TODO(mmukhi): This seems unnecessary.
 		t.mu.Unlock()
+		t.maxStreamMu.Unlock()
 		// The transport is closing.
 		return false, ErrConnClosing
 	}
-	sid := t.maxStreamID
 	if !g.headsUp {
 		// Stop accepting more streams now.
 		t.state = draining
+		sid := t.maxStreamID
 		if len(t.activeStreams) == 0 {
 			g.closeConn = true
 		}
 		t.mu.Unlock()
+		t.maxStreamMu.Unlock()
 		if err := t.framer.fr.WriteGoAway(sid, g.code, g.debugData); err != nil {
 			return false, err
 		}
@@ -1261,6 +1339,7 @@ func (t *http2Server) outgoingGoAwayHandler(g *goAway) (bool, error) {
 		return true, nil
 	}
 	t.mu.Unlock()
+	t.maxStreamMu.Unlock()
 	// For a graceful close, send out a GoAway with stream ID of MaxUInt32,
 	// Follow that with a ping and wait for the ack to come back or a timer
 	// to expire. During this time accept new streams since they might have
@@ -1345,3 +1424,18 @@ func getJitter(v time.Duration) time.Duration {
 	j := grpcrand.Int63n(2*r) - r
 	return time.Duration(j)
 }
+
+type connectionKey struct{}
+
+// GetConnection gets the connection from the context.
+func GetConnection(ctx context.Context) net.Conn {
+	conn, _ := ctx.Value(connectionKey{}).(net.Conn)
+	return conn
+}
+
+// SetConnection adds the connection to the context to be able to get
+// information about the destination ip and port for an incoming RPC. This also
+// allows any unary or streaming interceptors to see the connection.
+func setConnection(ctx context.Context, conn net.Conn) context.Context {
+	return context.WithValue(ctx, connectionKey{}, conn)
+}

vendor/google.golang.org/grpc/internal/transport/networktype/networktype.go

@@ -31,7 +31,7 @@ const key = keyType("grpc.internal.transport.networktype")
 
 // Set returns a copy of the provided address with attributes containing networkType.
 func Set(address resolver.Address, networkType string) resolver.Address {
-	address.Attributes = address.Attributes.WithValues(key, networkType)
+	address.Attributes = address.Attributes.WithValue(key, networkType)
 	return address
 }
 

vendor/google.golang.org/grpc/internal/transport/proxy.go

@@ -37,7 +37,7 @@ var (
 	httpProxyFromEnvironment = http.ProxyFromEnvironment
 )
 
-func mapAddress(ctx context.Context, address string) (*url.URL, error) {
+func mapAddress(address string) (*url.URL, error) {
 	req := &http.Request{
 		URL: &url.URL{
 			Scheme: "https",
@@ -114,7 +114,7 @@ func doHTTPConnectHandshake(ctx context.Context, conn net.Conn, backendAddr stri
 // connection.
 func proxyDial(ctx context.Context, addr string, grpcUA string) (conn net.Conn, err error) {
 	newAddr := addr
-	proxyURL, err := mapAddress(ctx, addr)
+	proxyURL, err := mapAddress(addr)
 	if err != nil {
 		return nil, err
 	}

vendor/google.golang.org/grpc/internal/transport/transport.go

@@ -30,9 +30,11 @@ import (
 	"net"
 	"sync"
 	"sync/atomic"
+	"time"
 
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/internal/channelz"
 	"google.golang.org/grpc/keepalive"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/resolver"
@@ -518,7 +520,8 @@ const (
 // ServerConfig consists of all the configurations to establish a server transport.
 type ServerConfig struct {
 	MaxStreams            uint32
-	AuthInfo              credentials.AuthInfo
+	ConnectionTimeout     time.Duration
+	Credentials           credentials.TransportCredentials
 	InTapHandle           tap.ServerInHandle
 	StatsHandler          stats.Handler
 	KeepaliveParams       keepalive.ServerParameters
@@ -527,7 +530,7 @@ type ServerConfig struct {
 	InitialConnWindowSize int32
 	WriteBufferSize       int
 	ReadBufferSize        int
-	ChannelzParentID      int64
+	ChannelzParentID      *channelz.Identifier
 	MaxHeaderListSize     *uint32
 	HeaderTableSize       *uint32
 }
@@ -561,7 +564,7 @@ type ConnectOptions struct {
 	// ReadBufferSize sets the size of read buffer, which in turn determines how much data can be read at most for one read syscall.
 	ReadBufferSize int
 	// ChannelzParentID sets the addrConn id which initiate the creation of this client transport.
-	ChannelzParentID int64
+	ChannelzParentID *channelz.Identifier
 	// MaxHeaderListSize sets the max (uncompressed) size of header list that is prepared to be received.
 	MaxHeaderListSize *uint32
 	// UseProxy specifies if a proxy should be used.
@@ -739,6 +742,12 @@ func (e ConnectionError) Origin() error {
 	return e.err
 }
 
+// Unwrap returns the original error of this connection error or nil when the
+// origin is nil.
+func (e ConnectionError) Unwrap() error {
+	return e.err
+}
+
 var (
 	// ErrConnClosing indicates that the transport is closing.
 	ErrConnClosing = connectionErrorf(true, nil, "transport is closing")

vendor/google.golang.org/grpc/internal/xds_handshake_cluster.go

@@ -28,7 +28,7 @@ type handshakeClusterNameKey struct{}
 // SetXDSHandshakeClusterName returns a copy of addr in which the Attributes field
 // is updated with the cluster name.
 func SetXDSHandshakeClusterName(addr resolver.Address, clusterName string) resolver.Address {
-	addr.Attributes = addr.Attributes.WithValues(handshakeClusterNameKey{}, clusterName)
+	addr.Attributes = addr.Attributes.WithValue(handshakeClusterNameKey{}, clusterName)
 	return addr
 }
 

vendor/google.golang.org/grpc/metadata/metadata.go

@@ -188,7 +188,9 @@ func FromIncomingContext(ctx context.Context) (MD, bool) {
 		// map, and there's no guarantee that the MD attached to the context is
 		// created using our helper functions.
 		key := strings.ToLower(k)
-		out[key] = v
+		s := make([]string, len(v))
+		copy(s, v)
+		out[key] = s
 	}
 	return out, true
 }
@@ -226,7 +228,9 @@ func FromOutgoingContext(ctx context.Context) (MD, bool) {
 		// map, and there's no guarantee that the MD attached to the context is
 		// created using our helper functions.
 		key := strings.ToLower(k)
-		out[key] = v
+		s := make([]string, len(v))
+		copy(s, v)
+		out[key] = s
 	}
 	for _, added := range raw.added {
 		if len(added)%2 == 1 {

vendor/google.golang.org/grpc/picker_wrapper.go

@@ -131,7 +131,7 @@ func (pw *pickerWrapper) pick(ctx context.Context, failfast bool, info balancer.
 			}
 			if _, ok := status.FromError(err); ok {
 				// Status error: end the RPC unconditionally with this status.
-				return nil, nil, err
+				return nil, nil, dropError{error: err}
 			}
 			// For all other errors, wait for ready RPCs should block and other
 			// RPCs should fail with unavailable.
@@ -144,7 +144,7 @@ func (pw *pickerWrapper) pick(ctx context.Context, failfast bool, info balancer.
 
 		acw, ok := pickResult.SubConn.(*acBalancerWrapper)
 		if !ok {
-			logger.Error("subconn returned from pick is not *acBalancerWrapper")
+			logger.Errorf("subconn returned from pick is type %T, not *acBalancerWrapper", pickResult.SubConn)
 			continue
 		}
 		if t := acw.getAddrConn().getReadyTransport(); t != nil {
@@ -175,3 +175,9 @@ func (pw *pickerWrapper) close() {
 	pw.done = true
 	close(pw.blockingCh)
 }
+
+// dropError is a wrapper error that indicates the LB policy wishes to drop the
+// RPC and not retry it.
+type dropError struct {
+	error
+}

vendor/google.golang.org/grpc/pickfirst.go

@@ -44,77 +44,107 @@ func (*pickfirstBuilder) Name() string {
 }
 
 type pickfirstBalancer struct {
-	state connectivity.State
+	state   connectivity.State
-	cc    balancer.ClientConn
+	cc      balancer.ClientConn
-	sc    balancer.SubConn
+	subConn balancer.SubConn
 }
 
 func (b *pickfirstBalancer) ResolverError(err error) {
-	switch b.state {
-	case connectivity.TransientFailure, connectivity.Idle, connectivity.Connecting:
-		// Set a failing picker if we don't have a good picker.
-		b.cc.UpdateState(balancer.State{ConnectivityState: connectivity.TransientFailure,
-			Picker: &picker{err: fmt.Errorf("name resolver error: %v", err)},
-		})
-	}
 	if logger.V(2) {
 		logger.Infof("pickfirstBalancer: ResolverError called with error %v", err)
 	}
+	if b.subConn == nil {
+		b.state = connectivity.TransientFailure
+	}
+
+	if b.state != connectivity.TransientFailure {
+		// The picker will not change since the balancer does not currently
+		// report an error.
+		return
+	}
+	b.cc.UpdateState(balancer.State{
+		ConnectivityState: connectivity.TransientFailure,
+		Picker:            &picker{err: fmt.Errorf("name resolver error: %v", err)},
+	})
 }
 
-func (b *pickfirstBalancer) UpdateClientConnState(cs balancer.ClientConnState) error {
+func (b *pickfirstBalancer) UpdateClientConnState(state balancer.ClientConnState) error {
-	if len(cs.ResolverState.Addresses) == 0 {
+	if len(state.ResolverState.Addresses) == 0 {
+		// The resolver reported an empty address list. Treat it like an error by
+		// calling b.ResolverError.
+		if b.subConn != nil {
+			// Remove the old subConn. All addresses were removed, so it is no longer
+			// valid.
+			b.cc.RemoveSubConn(b.subConn)
+			b.subConn = nil
+		}
 		b.ResolverError(errors.New("produced zero addresses"))
 		return balancer.ErrBadResolverState
 	}
-	if b.sc == nil {
+
-		var err error
+	if b.subConn != nil {
-		b.sc, err = b.cc.NewSubConn(cs.ResolverState.Addresses, balancer.NewSubConnOptions{})
+		b.cc.UpdateAddresses(b.subConn, state.ResolverState.Addresses)
-		if err != nil {
+		return nil
-			if logger.V(2) {
-				logger.Errorf("pickfirstBalancer: failed to NewSubConn: %v", err)
-			}
-			b.state = connectivity.TransientFailure
-			b.cc.UpdateState(balancer.State{ConnectivityState: connectivity.TransientFailure,
-				Picker: &picker{err: fmt.Errorf("error creating connection: %v", err)},
-			})
-			return balancer.ErrBadResolverState
-		}
-		b.state = connectivity.Idle
-		b.cc.UpdateState(balancer.State{ConnectivityState: connectivity.Idle, Picker: &picker{result: balancer.PickResult{SubConn: b.sc}}})
-		b.sc.Connect()
-	} else {
-		b.cc.UpdateAddresses(b.sc, cs.ResolverState.Addresses)
-		b.sc.Connect()
 	}
+
+	subConn, err := b.cc.NewSubConn(state.ResolverState.Addresses, balancer.NewSubConnOptions{})
+	if err != nil {
+		if logger.V(2) {
+			logger.Errorf("pickfirstBalancer: failed to NewSubConn: %v", err)
+		}
+		b.state = connectivity.TransientFailure
+		b.cc.UpdateState(balancer.State{
+			ConnectivityState: connectivity.TransientFailure,
+			Picker:            &picker{err: fmt.Errorf("error creating connection: %v", err)},
+		})
+		return balancer.ErrBadResolverState
+	}
+	b.subConn = subConn
+	b.state = connectivity.Idle
+	b.cc.UpdateState(balancer.State{
+		ConnectivityState: connectivity.Idle,
+		Picker:            &picker{result: balancer.PickResult{SubConn: b.subConn}},
+	})
+	b.subConn.Connect()
 	return nil
 }
 
-func (b *pickfirstBalancer) UpdateSubConnState(sc balancer.SubConn, s balancer.SubConnState) {
+func (b *pickfirstBalancer) UpdateSubConnState(subConn balancer.SubConn, state balancer.SubConnState) {
 	if logger.V(2) {
-		logger.Infof("pickfirstBalancer: UpdateSubConnState: %p, %v", sc, s)
+		logger.Infof("pickfirstBalancer: UpdateSubConnState: %p, %v", subConn, state)
 	}
-	if b.sc != sc {
+	if b.subConn != subConn {
 		if logger.V(2) {
-			logger.Infof("pickfirstBalancer: ignored state change because sc is not recognized")
+			logger.Infof("pickfirstBalancer: ignored state change because subConn is not recognized")
 		}
 		return
 	}
-	b.state = s.ConnectivityState
+	b.state = state.ConnectivityState
-	if s.ConnectivityState == connectivity.Shutdown {
+	if state.ConnectivityState == connectivity.Shutdown {
-		b.sc = nil
+		b.subConn = nil
 		return
 	}
 
-	switch s.ConnectivityState {
+	switch state.ConnectivityState {
-	case connectivity.Ready, connectivity.Idle:
+	case connectivity.Ready:
-		b.cc.UpdateState(balancer.State{ConnectivityState: s.ConnectivityState, Picker: &picker{result: balancer.PickResult{SubConn: sc}}})
+		b.cc.UpdateState(balancer.State{
+			ConnectivityState: state.ConnectivityState,
+			Picker:            &picker{result: balancer.PickResult{SubConn: subConn}},
+		})
 	case connectivity.Connecting:
-		b.cc.UpdateState(balancer.State{ConnectivityState: s.ConnectivityState, Picker: &picker{err: balancer.ErrNoSubConnAvailable}})
+		b.cc.UpdateState(balancer.State{
+			ConnectivityState: state.ConnectivityState,
+			Picker:            &picker{err: balancer.ErrNoSubConnAvailable},
+		})
+	case connectivity.Idle:
+		b.cc.UpdateState(balancer.State{
+			ConnectivityState: state.ConnectivityState,
+			Picker:            &idlePicker{subConn: subConn},
+		})
 	case connectivity.TransientFailure:
 		b.cc.UpdateState(balancer.State{
-			ConnectivityState: s.ConnectivityState,
+			ConnectivityState: state.ConnectivityState,
-			Picker:            &picker{err: s.ConnectionError},
+			Picker:            &picker{err: state.ConnectionError},
 		})
 	}
 }
@@ -122,15 +152,32 @@ func (b *pickfirstBalancer) UpdateSubConnState(sc balancer.SubConn, s balancer.S
 func (b *pickfirstBalancer) Close() {
 }
 
+func (b *pickfirstBalancer) ExitIdle() {
+	if b.subConn != nil && b.state == connectivity.Idle {
+		b.subConn.Connect()
+	}
+}
+
 type picker struct {
 	result balancer.PickResult
 	err    error
 }
 
-func (p *picker) Pick(info balancer.PickInfo) (balancer.PickResult, error) {
+func (p *picker) Pick(balancer.PickInfo) (balancer.PickResult, error) {
 	return p.result, p.err
 }
 
+// idlePicker is used when the SubConn is IDLE and kicks the SubConn into
+// CONNECTING when Pick is called.
+type idlePicker struct {
+	subConn balancer.SubConn
+}
+
+func (i *idlePicker) Pick(balancer.PickInfo) (balancer.PickResult, error) {
+	i.subConn.Connect()
+	return balancer.PickResult{}, balancer.ErrNoSubConnAvailable
+}
+
 func init() {
 	balancer.Register(newPickfirstBuilder())
 }

vendor/google.golang.org/grpc/reflection/grpc_reflection_v1alpha/reflection_grpc.pb.go

@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
-// - protoc-gen-go-grpc v1.1.0
+// - protoc-gen-go-grpc v1.2.0
 // - protoc             v3.14.0
 // source: reflection/grpc_reflection_v1alpha/reflection.proto
 

vendor/google.golang.org/grpc/reflection/serverreflection.go

@@ -37,21 +37,17 @@ To register server reflection on a gRPC server:
 package reflection // import "google.golang.org/grpc/reflection"
 
 import (
-	"bytes"
-	"compress/gzip"
-	"fmt"
 	"io"
-	"io/ioutil"
-	"reflect"
 	"sort"
-	"sync"
 
-	"github.com/golang/protobuf/proto"
-	dpb "github.com/golang/protobuf/protoc-gen-go/descriptor"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	rpb "google.golang.org/grpc/reflection/grpc_reflection_v1alpha"
 	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/reflect/protodesc"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
 )
 
 // GRPCServer is the interface provided by a gRPC server. It is implemented by
@@ -59,339 +55,174 @@ import (
 // as a registry, for accumulating the services exposed by the server.
 type GRPCServer interface {
 	grpc.ServiceRegistrar
-	GetServiceInfo() map[string]grpc.ServiceInfo
+	ServiceInfoProvider
 }
 
 var _ GRPCServer = (*grpc.Server)(nil)
 
-type serverReflectionServer struct {
-	rpb.UnimplementedServerReflectionServer
-	s GRPCServer
-
-	initSymbols  sync.Once
-	serviceNames []string
-	symbols      map[string]*dpb.FileDescriptorProto // map of fully-qualified names to files
-}
-
 // Register registers the server reflection service on the given gRPC server.
 func Register(s GRPCServer) {
-	rpb.RegisterServerReflectionServer(s, &serverReflectionServer{
+	svr := NewServer(ServerOptions{Services: s})
-		s: s,
+	rpb.RegisterServerReflectionServer(s, svr)
-	})
 }
 
-// protoMessage is used for type assertion on proto messages.
+// ServiceInfoProvider is an interface used to retrieve metadata about the
-// Generated proto message implements function Descriptor(), but Descriptor()
+// services to expose.
-// is not part of interface proto.Message. This interface is needed to
+//
-// call Descriptor().
+// The reflection service is only interested in the service names, but the
-type protoMessage interface {
+// signature is this way so that *grpc.Server implements it. So it is okay
-	Descriptor() ([]byte, []int)
+// for a custom implementation to return zero values for the
+// grpc.ServiceInfo values in the map.
+//
+// Experimental
+//
+// Notice: This type is EXPERIMENTAL and may be changed or removed in a
+// later release.
+type ServiceInfoProvider interface {
+	GetServiceInfo() map[string]grpc.ServiceInfo
 }
 
-func (s *serverReflectionServer) getSymbols() (svcNames []string, symbolIndex map[string]*dpb.FileDescriptorProto) {
+// ExtensionResolver is the interface used to query details about extensions.
-	s.initSymbols.Do(func() {
+// This interface is satisfied by protoregistry.GlobalTypes.
-		serviceInfo := s.s.GetServiceInfo()
+//
-
+// Experimental
-		s.symbols = map[string]*dpb.FileDescriptorProto{}
+//
-		s.serviceNames = make([]string, 0, len(serviceInfo))
+// Notice: This type is EXPERIMENTAL and may be changed or removed in a
-		processed := map[string]struct{}{}
+// later release.
-		for svc, info := range serviceInfo {
+type ExtensionResolver interface {
-			s.serviceNames = append(s.serviceNames, svc)
+	protoregistry.ExtensionTypeResolver
-			fdenc, ok := parseMetadata(info.Metadata)
+	RangeExtensionsByMessage(message protoreflect.FullName, f func(protoreflect.ExtensionType) bool)
-			if !ok {
-				continue
-			}
-			fd, err := decodeFileDesc(fdenc)
-			if err != nil {
-				continue
-			}
-			s.processFile(fd, processed)
-		}
-		sort.Strings(s.serviceNames)
-	})
-
-	return s.serviceNames, s.symbols
 }
 
-func (s *serverReflectionServer) processFile(fd *dpb.FileDescriptorProto, processed map[string]struct{}) {
+// ServerOptions represents the options used to construct a reflection server.
-	filename := fd.GetName()
+//
-	if _, ok := processed[filename]; ok {
+// Experimental
-		return
+//
-	}
+// Notice: This type is EXPERIMENTAL and may be changed or removed in a
-	processed[filename] = struct{}{}
+// later release.
+type ServerOptions struct {
+	// The source of advertised RPC services. If not specified, the reflection
+	// server will report an empty list when asked to list services.
+	//
+	// This value will typically be a *grpc.Server. But the set of advertised
+	// services can be customized by wrapping a *grpc.Server or using an
+	// alternate implementation that returns a custom set of service names.
+	Services ServiceInfoProvider
+	// Optional resolver used to load descriptors. If not specified,
+	// protoregistry.GlobalFiles will be used.
+	DescriptorResolver protodesc.Resolver
+	// Optional resolver used to query for known extensions. If not specified,
+	// protoregistry.GlobalTypes will be used.
+	ExtensionResolver ExtensionResolver
+}
 
-	prefix := fd.GetPackage()
+// NewServer returns a reflection server implementation using the given options.
-
+// This can be used to customize behavior of the reflection service. Most usages
-	for _, msg := range fd.MessageType {
+// should prefer to use Register instead.
-		s.processMessage(fd, prefix, msg)
+//
+// Experimental
+//
+// Notice: This function is EXPERIMENTAL and may be changed or removed in a
+// later release.
+func NewServer(opts ServerOptions) rpb.ServerReflectionServer {
+	if opts.DescriptorResolver == nil {
+		opts.DescriptorResolver = protoregistry.GlobalFiles
 	}
-	for _, en := range fd.EnumType {
+	if opts.ExtensionResolver == nil {
-		s.processEnum(fd, prefix, en)
+		opts.ExtensionResolver = protoregistry.GlobalTypes
 	}
-	for _, ext := range fd.Extension {
+	return &serverReflectionServer{
-		s.processField(fd, prefix, ext)
+		s:            opts.Services,
-	}
+		descResolver: opts.DescriptorResolver,
-	for _, svc := range fd.Service {
+		extResolver:  opts.ExtensionResolver,
-		svcName := fqn(prefix, svc.GetName())
-		s.symbols[svcName] = fd
-		for _, meth := range svc.Method {
-			name := fqn(svcName, meth.GetName())
-			s.symbols[name] = fd
-		}
-	}
-
-	for _, dep := range fd.Dependency {
-		fdenc := proto.FileDescriptor(dep)
-		fdDep, err := decodeFileDesc(fdenc)
-		if err != nil {
-			continue
-		}
-		s.processFile(fdDep, processed)
 	}
 }
 
-func (s *serverReflectionServer) processMessage(fd *dpb.FileDescriptorProto, prefix string, msg *dpb.DescriptorProto) {
+type serverReflectionServer struct {
-	msgName := fqn(prefix, msg.GetName())
+	rpb.UnimplementedServerReflectionServer
-	s.symbols[msgName] = fd
+	s            ServiceInfoProvider
-
+	descResolver protodesc.Resolver
-	for _, nested := range msg.NestedType {
+	extResolver  ExtensionResolver
-		s.processMessage(fd, msgName, nested)
-	}
-	for _, en := range msg.EnumType {
-		s.processEnum(fd, msgName, en)
-	}
-	for _, ext := range msg.Extension {
-		s.processField(fd, msgName, ext)
-	}
-	for _, fld := range msg.Field {
-		s.processField(fd, msgName, fld)
-	}
-	for _, oneof := range msg.OneofDecl {
-		oneofName := fqn(msgName, oneof.GetName())
-		s.symbols[oneofName] = fd
-	}
-}
-
-func (s *serverReflectionServer) processEnum(fd *dpb.FileDescriptorProto, prefix string, en *dpb.EnumDescriptorProto) {
-	enName := fqn(prefix, en.GetName())
-	s.symbols[enName] = fd
-
-	for _, val := range en.Value {
-		valName := fqn(enName, val.GetName())
-		s.symbols[valName] = fd
-	}
-}
-
-func (s *serverReflectionServer) processField(fd *dpb.FileDescriptorProto, prefix string, fld *dpb.FieldDescriptorProto) {
-	fldName := fqn(prefix, fld.GetName())
-	s.symbols[fldName] = fd
-}
-
-func fqn(prefix, name string) string {
-	if prefix == "" {
-		return name
-	}
-	return prefix + "." + name
-}
-
-// fileDescForType gets the file descriptor for the given type.
-// The given type should be a proto message.
-func (s *serverReflectionServer) fileDescForType(st reflect.Type) (*dpb.FileDescriptorProto, error) {
-	m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(protoMessage)
-	if !ok {
-		return nil, fmt.Errorf("failed to create message from type: %v", st)
-	}
-	enc, _ := m.Descriptor()
-
-	return decodeFileDesc(enc)
-}
-
-// decodeFileDesc does decompression and unmarshalling on the given
-// file descriptor byte slice.
-func decodeFileDesc(enc []byte) (*dpb.FileDescriptorProto, error) {
-	raw, err := decompress(enc)
-	if err != nil {
-		return nil, fmt.Errorf("failed to decompress enc: %v", err)
-	}
-
-	fd := new(dpb.FileDescriptorProto)
-	if err := proto.Unmarshal(raw, fd); err != nil {
-		return nil, fmt.Errorf("bad descriptor: %v", err)
-	}
-	return fd, nil
-}
-
-// decompress does gzip decompression.
-func decompress(b []byte) ([]byte, error) {
-	r, err := gzip.NewReader(bytes.NewReader(b))
-	if err != nil {
-		return nil, fmt.Errorf("bad gzipped descriptor: %v", err)
-	}
-	out, err := ioutil.ReadAll(r)
-	if err != nil {
-		return nil, fmt.Errorf("bad gzipped descriptor: %v", err)
-	}
-	return out, nil
-}
-
-func typeForName(name string) (reflect.Type, error) {
-	pt := proto.MessageType(name)
-	if pt == nil {
-		return nil, fmt.Errorf("unknown type: %q", name)
-	}
-	st := pt.Elem()
-
-	return st, nil
-}
-
-func fileDescContainingExtension(st reflect.Type, ext int32) (*dpb.FileDescriptorProto, error) {
-	m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(proto.Message)
-	if !ok {
-		return nil, fmt.Errorf("failed to create message from type: %v", st)
-	}
-
-	var extDesc *proto.ExtensionDesc
-	for id, desc := range proto.RegisteredExtensions(m) {
-		if id == ext {
-			extDesc = desc
-			break
-		}
-	}
-
-	if extDesc == nil {
-		return nil, fmt.Errorf("failed to find registered extension for extension number %v", ext)
-	}
-
-	return decodeFileDesc(proto.FileDescriptor(extDesc.Filename))
-}
-
-func (s *serverReflectionServer) allExtensionNumbersForType(st reflect.Type) ([]int32, error) {
-	m, ok := reflect.Zero(reflect.PtrTo(st)).Interface().(proto.Message)
-	if !ok {
-		return nil, fmt.Errorf("failed to create message from type: %v", st)
-	}
-
-	exts := proto.RegisteredExtensions(m)
-	out := make([]int32, 0, len(exts))
-	for id := range exts {
-		out = append(out, id)
-	}
-	return out, nil
 }
 
 // fileDescWithDependencies returns a slice of serialized fileDescriptors in
 // wire format ([]byte). The fileDescriptors will include fd and all the
 // transitive dependencies of fd with names not in sentFileDescriptors.
-func fileDescWithDependencies(fd *dpb.FileDescriptorProto, sentFileDescriptors map[string]bool) ([][]byte, error) {
+func (s *serverReflectionServer) fileDescWithDependencies(fd protoreflect.FileDescriptor, sentFileDescriptors map[string]bool) ([][]byte, error) {
-	r := [][]byte{}
+	var r [][]byte
-	queue := []*dpb.FileDescriptorProto{fd}
+	queue := []protoreflect.FileDescriptor{fd}
 	for len(queue) > 0 {
 		currentfd := queue[0]
 		queue = queue[1:]
-		if sent := sentFileDescriptors[currentfd.GetName()]; len(r) == 0 || !sent {
+		if sent := sentFileDescriptors[currentfd.Path()]; len(r) == 0 || !sent {
-			sentFileDescriptors[currentfd.GetName()] = true
+			sentFileDescriptors[currentfd.Path()] = true
-			currentfdEncoded, err := proto.Marshal(currentfd)
+			fdProto := protodesc.ToFileDescriptorProto(currentfd)
+			currentfdEncoded, err := proto.Marshal(fdProto)
 			if err != nil {
 				return nil, err
 			}
 			r = append(r, currentfdEncoded)
 		}
-		for _, dep := range currentfd.Dependency {
+		for i := 0; i < currentfd.Imports().Len(); i++ {
-			fdenc := proto.FileDescriptor(dep)
+			queue = append(queue, currentfd.Imports().Get(i))
-			fdDep, err := decodeFileDesc(fdenc)
-			if err != nil {
-				continue
-			}
-			queue = append(queue, fdDep)
 		}
 	}
 	return r, nil
 }
 
-// fileDescEncodingByFilename finds the file descriptor for given filename,
-// finds all of its previously unsent transitive dependencies, does marshalling
-// on them, and returns the marshalled result.
-func (s *serverReflectionServer) fileDescEncodingByFilename(name string, sentFileDescriptors map[string]bool) ([][]byte, error) {
-	enc := proto.FileDescriptor(name)
-	if enc == nil {
-		return nil, fmt.Errorf("unknown file: %v", name)
-	}
-	fd, err := decodeFileDesc(enc)
-	if err != nil {
-		return nil, err
-	}
-	return fileDescWithDependencies(fd, sentFileDescriptors)
-}
-
-// parseMetadata finds the file descriptor bytes specified meta.
-// For SupportPackageIsVersion4, m is the name of the proto file, we
-// call proto.FileDescriptor to get the byte slice.
-// For SupportPackageIsVersion3, m is a byte slice itself.
-func parseMetadata(meta interface{}) ([]byte, bool) {
-	// Check if meta is the file name.
-	if fileNameForMeta, ok := meta.(string); ok {
-		return proto.FileDescriptor(fileNameForMeta), true
-	}
-
-	// Check if meta is the byte slice.
-	if enc, ok := meta.([]byte); ok {
-		return enc, true
-	}
-
-	return nil, false
-}
-
 // fileDescEncodingContainingSymbol finds the file descriptor containing the
 // given symbol, finds all of its previously unsent transitive dependencies,
 // does marshalling on them, and returns the marshalled result. The given symbol
 // can be a type, a service or a method.
 func (s *serverReflectionServer) fileDescEncodingContainingSymbol(name string, sentFileDescriptors map[string]bool) ([][]byte, error) {
-	_, symbols := s.getSymbols()
+	d, err := s.descResolver.FindDescriptorByName(protoreflect.FullName(name))
-	fd := symbols[name]
+	if err != nil {
-	if fd == nil {
+		return nil, err
-		// Check if it's a type name that was not present in the
-		// transitive dependencies of the registered services.
-		if st, err := typeForName(name); err == nil {
-			fd, err = s.fileDescForType(st)
-			if err != nil {
-				return nil, err
-			}
-		}
 	}
-
+	return s.fileDescWithDependencies(d.ParentFile(), sentFileDescriptors)
-	if fd == nil {
-		return nil, fmt.Errorf("unknown symbol: %v", name)
-	}
-
-	return fileDescWithDependencies(fd, sentFileDescriptors)
 }
 
 // fileDescEncodingContainingExtension finds the file descriptor containing
 // given extension, finds all of its previously unsent transitive dependencies,
 // does marshalling on them, and returns the marshalled result.
 func (s *serverReflectionServer) fileDescEncodingContainingExtension(typeName string, extNum int32, sentFileDescriptors map[string]bool) ([][]byte, error) {
-	st, err := typeForName(typeName)
+	xt, err := s.extResolver.FindExtensionByNumber(protoreflect.FullName(typeName), protoreflect.FieldNumber(extNum))
 	if err != nil {
 		return nil, err
 	}
-	fd, err := fileDescContainingExtension(st, extNum)
+	return s.fileDescWithDependencies(xt.TypeDescriptor().ParentFile(), sentFileDescriptors)
-	if err != nil {
-		return nil, err
-	}
-	return fileDescWithDependencies(fd, sentFileDescriptors)
 }
 
 // allExtensionNumbersForTypeName returns all extension numbers for the given type.
 func (s *serverReflectionServer) allExtensionNumbersForTypeName(name string) ([]int32, error) {
-	st, err := typeForName(name)
+	var numbers []int32
-	if err != nil {
+	s.extResolver.RangeExtensionsByMessage(protoreflect.FullName(name), func(xt protoreflect.ExtensionType) bool {
-		return nil, err
+		numbers = append(numbers, int32(xt.TypeDescriptor().Number()))
+		return true
+	})
+	sort.Slice(numbers, func(i, j int) bool {
+		return numbers[i] < numbers[j]
+	})
+	if len(numbers) == 0 {
+		// maybe return an error if given type name is not known
+		if _, err := s.descResolver.FindDescriptorByName(protoreflect.FullName(name)); err != nil {
+			return nil, err
+		}
 	}
-	extNums, err := s.allExtensionNumbersForType(st)
+	return numbers, nil
-	if err != nil {
+}
-		return nil, err
+
+// listServices returns the names of services this server exposes.
+func (s *serverReflectionServer) listServices() []*rpb.ServiceResponse {
+	serviceInfo := s.s.GetServiceInfo()
+	resp := make([]*rpb.ServiceResponse, 0, len(serviceInfo))
+	for svc := range serviceInfo {
+		resp = append(resp, &rpb.ServiceResponse{Name: svc})
 	}
-	return extNums, nil
+	sort.Slice(resp, func(i, j int) bool {
+		return resp[i].Name < resp[j].Name
+	})
+	return resp
 }
 
 // ServerReflectionInfo is the reflection service handler.
@@ -412,7 +243,11 @@ func (s *serverReflectionServer) ServerReflectionInfo(stream rpb.ServerReflectio
 		}
 		switch req := in.MessageRequest.(type) {
 		case *rpb.ServerReflectionRequest_FileByFilename:
-			b, err := s.fileDescEncodingByFilename(req.FileByFilename, sentFileDescriptors)
+			var b [][]byte
+			fd, err := s.descResolver.FindFileByPath(req.FileByFilename)
+			if err == nil {
+				b, err = s.fileDescWithDependencies(fd, sentFileDescriptors)
+			}
 			if err != nil {
 				out.MessageResponse = &rpb.ServerReflectionResponse_ErrorResponse{
 					ErrorResponse: &rpb.ErrorResponse{
@@ -473,16 +308,9 @@ func (s *serverReflectionServer) ServerReflectionInfo(stream rpb.ServerReflectio
 				}
 			}
 		case *rpb.ServerReflectionRequest_ListServices:
-			svcNames, _ := s.getSymbols()
-			serviceResponses := make([]*rpb.ServiceResponse, len(svcNames))
-			for i, n := range svcNames {
-				serviceResponses[i] = &rpb.ServiceResponse{
-					Name: n,
-				}
-			}
 			out.MessageResponse = &rpb.ServerReflectionResponse_ListServicesResponse{
 				ListServicesResponse: &rpb.ListServiceResponse{
-					Service: serviceResponses,
+					Service: s.listServices(),
 				},
 			}
 		default:

vendor/google.golang.org/grpc/regenerate.sh

@@ -27,9 +27,9 @@ export PATH=${GOBIN}:${PATH}
 mkdir -p ${GOBIN}
 
 echo "remove existing generated files"
-# grpc_testingv3/testv3.pb.go is not re-generated because it was
+# grpc_testing_not_regenerate/*.pb.go is not re-generated,
-# intentionally generated by an older version of protoc-gen-go.
+# see grpc_testing_not_regenerate/README.md for details.
-rm -f $(find . -name '*.pb.go' | grep -v 'grpc_testingv3/testv3.pb.go')
+rm -f $(find . -name '*.pb.go' | grep -v 'grpc_testing_not_regenerate')
 
 echo "go install google.golang.org/protobuf/cmd/protoc-gen-go"
 (cd test/tools && go install google.golang.org/protobuf/cmd/protoc-gen-go)
@@ -76,7 +76,21 @@ SOURCES=(
 # These options of the form 'Mfoo.proto=bar' instruct the codegen to use an
 # import path of 'bar' in the generated code when 'foo.proto' is imported in
 # one of the sources.
-OPTS=Mgrpc/service_config/service_config.proto=/internal/proto/grpc_service_config,Mgrpc/core/stats.proto=google.golang.org/grpc/interop/grpc_testing/core
+#
+# Note that the protos listed here are all for testing purposes. All protos to
+# be used externally should have a go_package option (and they don't need to be
+# listed here).
+OPTS=Mgrpc/service_config/service_config.proto=/internal/proto/grpc_service_config,\
+Mgrpc/core/stats.proto=google.golang.org/grpc/interop/grpc_testing/core,\
+Mgrpc/testing/benchmark_service.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/stats.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/report_qps_scenario_service.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/messages.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/worker_service.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/control.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/test.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/payloads.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/empty.proto=google.golang.org/grpc/interop/grpc_testing
 
 for src in ${SOURCES[@]}; do
   echo "protoc ${src}"
@@ -85,7 +99,6 @@ for src in ${SOURCES[@]}; do
     -I${WORKDIR}/grpc-proto \
     -I${WORKDIR}/googleapis \
     -I${WORKDIR}/protobuf/src \
-    -I${WORKDIR}/istio \
     ${src}
 done
 
@@ -96,18 +109,17 @@ for src in ${LEGACY_SOURCES[@]}; do
     -I${WORKDIR}/grpc-proto \
     -I${WORKDIR}/googleapis \
     -I${WORKDIR}/protobuf/src \
-    -I${WORKDIR}/istio \
     ${src}
 done
 
 # The go_package option in grpc/lookup/v1/rls.proto doesn't match the
 # current location. Move it into the right place.
-mkdir -p ${WORKDIR}/out/google.golang.org/grpc/balancer/rls/internal/proto/grpc_lookup_v1
+mkdir -p ${WORKDIR}/out/google.golang.org/grpc/internal/proto/grpc_lookup_v1
-mv ${WORKDIR}/out/google.golang.org/grpc/lookup/grpc_lookup_v1/* ${WORKDIR}/out/google.golang.org/grpc/balancer/rls/internal/proto/grpc_lookup_v1
+mv ${WORKDIR}/out/google.golang.org/grpc/lookup/grpc_lookup_v1/* ${WORKDIR}/out/google.golang.org/grpc/internal/proto/grpc_lookup_v1
 
-# grpc_testingv3/testv3.pb.go is not re-generated because it was
+# grpc_testing_not_regenerate/*.pb.go are not re-generated,
-# intentionally generated by an older version of protoc-gen-go.
+# see grpc_testing_not_regenerate/README.md for details.
-rm ${WORKDIR}/out/google.golang.org/grpc/reflection/grpc_testingv3/*.pb.go
+rm ${WORKDIR}/out/google.golang.org/grpc/reflection/grpc_testing_not_regenerate/*.pb.go
 
 # grpc/service_config/service_config.proto does not have a go_package option.
 mv ${WORKDIR}/out/grpc/service_config/service_config.pb.go internal/proto/grpc_service_config

vendor/google.golang.org/grpc/resolver/map.go

@@ -0,0 +1,109 @@
+/*
+ *
+ * Copyright 2021 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package resolver
+
+type addressMapEntry struct {
+	addr  Address
+	value interface{}
+}
+
+// AddressMap is a map of addresses to arbitrary values taking into account
+// Attributes.  BalancerAttributes are ignored, as are Metadata and Type.
+// Multiple accesses may not be performed concurrently.  Must be created via
+// NewAddressMap; do not construct directly.
+type AddressMap struct {
+	m map[string]addressMapEntryList
+}
+
+type addressMapEntryList []*addressMapEntry
+
+// NewAddressMap creates a new AddressMap.
+func NewAddressMap() *AddressMap {
+	return &AddressMap{m: make(map[string]addressMapEntryList)}
+}
+
+// find returns the index of addr in the addressMapEntry slice, or -1 if not
+// present.
+func (l addressMapEntryList) find(addr Address) int {
+	if len(l) == 0 {
+		return -1
+	}
+	for i, entry := range l {
+		if entry.addr.ServerName == addr.ServerName &&
+			entry.addr.Attributes.Equal(addr.Attributes) {
+			return i
+		}
+	}
+	return -1
+}
+
+// Get returns the value for the address in the map, if present.
+func (a *AddressMap) Get(addr Address) (value interface{}, ok bool) {
+	entryList := a.m[addr.Addr]
+	if entry := entryList.find(addr); entry != -1 {
+		return entryList[entry].value, true
+	}
+	return nil, false
+}
+
+// Set updates or adds the value to the address in the map.
+func (a *AddressMap) Set(addr Address, value interface{}) {
+	entryList := a.m[addr.Addr]
+	if entry := entryList.find(addr); entry != -1 {
+		a.m[addr.Addr][entry].value = value
+		return
+	}
+	a.m[addr.Addr] = append(a.m[addr.Addr], &addressMapEntry{addr: addr, value: value})
+}
+
+// Delete removes addr from the map.
+func (a *AddressMap) Delete(addr Address) {
+	entryList := a.m[addr.Addr]
+	entry := entryList.find(addr)
+	if entry == -1 {
+		return
+	}
+	if len(entryList) == 1 {
+		entryList = nil
+	} else {
+		copy(entryList[entry:], entryList[entry+1:])
+		entryList = entryList[:len(entryList)-1]
+	}
+	a.m[addr.Addr] = entryList
+}
+
+// Len returns the number of entries in the map.
+func (a *AddressMap) Len() int {
+	ret := 0
+	for _, entryList := range a.m {
+		ret += len(entryList)
+	}
+	return ret
+}
+
+// Keys returns a slice of all current map keys.
+func (a *AddressMap) Keys() []Address {
+	ret := make([]Address, 0, a.Len())
+	for _, entryList := range a.m {
+		for _, entry := range entryList {
+			ret = append(ret, entry.addr)
+		}
+	}
+	return ret
+}

vendor/google.golang.org/grpc/resolver/resolver.go

@@ -23,9 +23,11 @@ package resolver
 import (
 	"context"
 	"net"
+	"net/url"
 
 	"google.golang.org/grpc/attributes"
 	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/internal/pretty"
 	"google.golang.org/grpc/serviceconfig"
 )
 
@@ -116,9 +118,14 @@ type Address struct {
 	ServerName string
 
 	// Attributes contains arbitrary data about this address intended for
-	// consumption by the load balancing policy.
+	// consumption by the SubConn.
 	Attributes *attributes.Attributes
 
+	// BalancerAttributes contains arbitrary data about this address intended
+	// for consumption by the LB policy.  These attribes do not affect SubConn
+	// creation, connection establishment, handshaking, etc.
+	BalancerAttributes *attributes.Attributes
+
 	// Type is the type of this address.
 	//
 	// Deprecated: use Attributes instead.
@@ -131,6 +138,20 @@ type Address struct {
 	Metadata interface{}
 }
 
+// Equal returns whether a and o are identical.  Metadata is compared directly,
+// not with any recursive introspection.
+func (a Address) Equal(o Address) bool {
+	return a.Addr == o.Addr && a.ServerName == o.ServerName &&
+		a.Attributes.Equal(o.Attributes) &&
+		a.BalancerAttributes.Equal(o.BalancerAttributes) &&
+		a.Type == o.Type && a.Metadata == o.Metadata
+}
+
+// String returns JSON formatted string representation of the address.
+func (a Address) String() string {
+	return pretty.ToJSON(a)
+}
+
 // BuildOptions includes additional information for the builder to create
 // the resolver.
 type BuildOptions struct {
@@ -204,25 +225,36 @@ type ClientConn interface {
 
 // Target represents a target for gRPC, as specified in:
 // https://github.com/grpc/grpc/blob/master/doc/naming.md.
-// It is parsed from the target string that gets passed into Dial or DialContext by the user. And
+// It is parsed from the target string that gets passed into Dial or DialContext
-// grpc passes it to the resolver and the balancer.
+// by the user. And gRPC passes it to the resolver and the balancer.
 //
-// If the target follows the naming spec, and the parsed scheme is registered with grpc, we will
+// If the target follows the naming spec, and the parsed scheme is registered
-// parse the target string according to the spec. e.g. "dns://some_authority/foo.bar" will be parsed
+// with gRPC, we will parse the target string according to the spec. If the
-// into &Target{Scheme: "dns", Authority: "some_authority", Endpoint: "foo.bar"}
+// target does not contain a scheme or if the parsed scheme is not registered
+// (i.e. no corresponding resolver available to resolve the endpoint), we will
+// apply the default scheme, and will attempt to reparse it.
 //
-// If the target does not contain a scheme, we will apply the default scheme, and set the Target to
+// Examples:
-// be the full target string. e.g. "foo.bar" will be parsed into
-// &Target{Scheme: resolver.GetDefaultScheme(), Endpoint: "foo.bar"}.
 //
-// If the parsed scheme is not registered (i.e. no corresponding resolver available to resolve the
+// - "dns://some_authority/foo.bar"
-// endpoint), we set the Scheme to be the default scheme, and set the Endpoint to be the full target
+//   Target{Scheme: "dns", Authority: "some_authority", Endpoint: "foo.bar"}
-// string. e.g. target string "unknown_scheme://authority/endpoint" will be parsed into
+// - "foo.bar"
-// &Target{Scheme: resolver.GetDefaultScheme(), Endpoint: "unknown_scheme://authority/endpoint"}.
+//   Target{Scheme: resolver.GetDefaultScheme(), Endpoint: "foo.bar"}
+// - "unknown_scheme://authority/endpoint"
+//   Target{Scheme: resolver.GetDefaultScheme(), Endpoint: "unknown_scheme://authority/endpoint"}
 type Target struct {
-	Scheme    string
+	// Deprecated: use URL.Scheme instead.
+	Scheme string
+	// Deprecated: use URL.Host instead.
 	Authority string
-	Endpoint  string
+	// Deprecated: use URL.Path or URL.Opaque instead. The latter is set when
+	// the former is empty.
+	Endpoint string
+	// URL contains the parsed dial target with an optional default scheme added
+	// to it if the original dial target contained no scheme or contained an
+	// unregistered scheme. Any query params specified in the original dial
+	// target can be accessed from here.
+	URL url.URL
 }
 
 // Builder creates a resolver that will be used to watch name resolution updates.

vendor/google.golang.org/grpc/resolver_conn_wrapper.go

@@ -19,7 +19,6 @@
 package grpc
 
 import (
-	"fmt"
 	"strings"
 	"sync"
 
@@ -27,6 +26,7 @@ import (
 	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/internal/channelz"
 	"google.golang.org/grpc/internal/grpcsync"
+	"google.golang.org/grpc/internal/pretty"
 	"google.golang.org/grpc/resolver"
 	"google.golang.org/grpc/serviceconfig"
 )
@@ -97,10 +97,7 @@ func (ccr *ccResolverWrapper) UpdateState(s resolver.State) error {
 	if ccr.done.HasFired() {
 		return nil
 	}
-	channelz.Infof(logger, ccr.cc.channelzID, "ccResolverWrapper: sending update to cc: %v", s)
+	ccr.addChannelzTraceEvent(s)
-	if channelz.IsOn() {
-		ccr.addChannelzTraceEvent(s)
-	}
 	ccr.curState = s
 	if err := ccr.cc.updateResolverState(ccr.curState, nil); err == balancer.ErrBadResolverState {
 		return balancer.ErrBadResolverState
@@ -125,10 +122,7 @@ func (ccr *ccResolverWrapper) NewAddress(addrs []resolver.Address) {
 	if ccr.done.HasFired() {
 		return
 	}
-	channelz.Infof(logger, ccr.cc.channelzID, "ccResolverWrapper: sending new addresses to cc: %v", addrs)
+	ccr.addChannelzTraceEvent(resolver.State{Addresses: addrs, ServiceConfig: ccr.curState.ServiceConfig})
-	if channelz.IsOn() {
-		ccr.addChannelzTraceEvent(resolver.State{Addresses: addrs, ServiceConfig: ccr.curState.ServiceConfig})
-	}
 	ccr.curState.Addresses = addrs
 	ccr.cc.updateResolverState(ccr.curState, nil)
 }
@@ -141,7 +135,7 @@ func (ccr *ccResolverWrapper) NewServiceConfig(sc string) {
 	if ccr.done.HasFired() {
 		return
 	}
-	channelz.Infof(logger, ccr.cc.channelzID, "ccResolverWrapper: got new service config: %v", sc)
+	channelz.Infof(logger, ccr.cc.channelzID, "ccResolverWrapper: got new service config: %s", sc)
 	if ccr.cc.dopts.disableServiceConfig {
 		channelz.Info(logger, ccr.cc.channelzID, "Service config lookups disabled; ignoring config")
 		return
@@ -151,9 +145,7 @@ func (ccr *ccResolverWrapper) NewServiceConfig(sc string) {
 		channelz.Warningf(logger, ccr.cc.channelzID, "ccResolverWrapper: error parsing service config: %v", scpr.Err)
 		return
 	}
-	if channelz.IsOn() {
+	ccr.addChannelzTraceEvent(resolver.State{Addresses: ccr.curState.Addresses, ServiceConfig: scpr})
-		ccr.addChannelzTraceEvent(resolver.State{Addresses: ccr.curState.Addresses, ServiceConfig: scpr})
-	}
 	ccr.curState.ServiceConfig = scpr
 	ccr.cc.updateResolverState(ccr.curState, nil)
 }
@@ -180,8 +172,5 @@ func (ccr *ccResolverWrapper) addChannelzTraceEvent(s resolver.State) {
 	} else if len(ccr.curState.Addresses) == 0 && len(s.Addresses) > 0 {
 		updates = append(updates, "resolver returned new addresses")
 	}
-	channelz.AddTraceEvent(logger, ccr.cc.channelzID, 0, &channelz.TraceEventDesc{
+	channelz.Infof(logger, ccr.cc.channelzID, "Resolver state updated: %s (%v)", pretty.ToJSON(s), strings.Join(updates, "; "))
-		Desc:     fmt.Sprintf("Resolver state updated: %+v (%v)", s, strings.Join(updates, "; ")),
-		Severity: channelz.CtInfo,
-	})
 }

vendor/google.golang.org/grpc/rpc_util.go

@@ -712,13 +712,11 @@ func recvAndDecompress(p *parser, s *transport.Stream, dc Decompressor, maxRecei
 		if err != nil {
 			return nil, status.Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err)
 		}
-	} else {
+		if size > maxReceiveMessageSize {
-		size = len(d)
+			// TODO: Revisit the error code. Currently keep it consistent with java
-	}
+			// implementation.
-	if size > maxReceiveMessageSize {
+			return nil, status.Errorf(codes.ResourceExhausted, "grpc: received message after decompression larger than max (%d vs. %d)", size, maxReceiveMessageSize)
-		// TODO: Revisit the error code. Currently keep it consistent with java
+		}
-		// implementation.
-		return nil, status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", size, maxReceiveMessageSize)
 	}
 	return d, nil
 }

vendor/google.golang.org/grpc/server.go

@@ -134,7 +134,7 @@ type Server struct {
 	channelzRemoveOnce sync.Once
 	serveWG            sync.WaitGroup // counts active Serve goroutines for GracefulStop
 
-	channelzID int64 // channelz unique identification number
+	channelzID *channelz.Identifier
 	czData     *channelzData
 
 	serverWorkerChannels []chan *serverWorkerData
@@ -584,9 +584,8 @@ func NewServer(opt ...ServerOption) *Server {
 		s.initServerWorkers()
 	}
 
-	if channelz.IsOn() {
+	s.channelzID = channelz.RegisterServer(&channelzServer{s}, "")
-		s.channelzID = channelz.RegisterServer(&channelzServer{s}, "")
+	channelz.Info(logger, s.channelzID, "Server created")
-	}
 	return s
 }
 
@@ -710,16 +709,9 @@ func (s *Server) GetServiceInfo() map[string]ServiceInfo {
 // the server being stopped.
 var ErrServerStopped = errors.New("grpc: the server has been stopped")
 
-func (s *Server) useTransportAuthenticator(rawConn net.Conn) (net.Conn, credentials.AuthInfo, error) {
-	if s.opts.creds == nil {
-		return rawConn, nil, nil
-	}
-	return s.opts.creds.ServerHandshake(rawConn)
-}
-
 type listenSocket struct {
 	net.Listener
-	channelzID int64
+	channelzID *channelz.Identifier
 }
 
 func (l *listenSocket) ChannelzMetric() *channelz.SocketInternalMetric {
@@ -731,9 +723,8 @@ func (l *listenSocket) ChannelzMetric() *channelz.SocketInternalMetric {
 
 func (l *listenSocket) Close() error {
 	err := l.Listener.Close()
-	if channelz.IsOn() {
+	channelz.RemoveEntry(l.channelzID)
-		channelz.RemoveEntry(l.channelzID)
+	channelz.Info(logger, l.channelzID, "ListenSocket deleted")
-	}
 	return err
 }
 
@@ -766,11 +757,6 @@ func (s *Server) Serve(lis net.Listener) error {
 	ls := &listenSocket{Listener: lis}
 	s.lis[ls] = true
 
-	if channelz.IsOn() {
-		ls.channelzID = channelz.RegisterListenSocket(ls, s.channelzID, lis.Addr().String())
-	}
-	s.mu.Unlock()
-
 	defer func() {
 		s.mu.Lock()
 		if s.lis != nil && s.lis[ls] {
@@ -780,8 +766,16 @@ func (s *Server) Serve(lis net.Listener) error {
 		s.mu.Unlock()
 	}()
 
-	var tempDelay time.Duration // how long to sleep on accept failure
+	var err error
+	ls.channelzID, err = channelz.RegisterListenSocket(ls, s.channelzID, lis.Addr().String())
+	if err != nil {
+		s.mu.Unlock()
+		return err
+	}
+	s.mu.Unlock()
+	channelz.Info(logger, ls.channelzID, "ListenSocket created")
 
+	var tempDelay time.Duration // how long to sleep on accept failure
 	for {
 		rawConn, err := lis.Accept()
 		if err != nil {
@@ -839,35 +833,14 @@ func (s *Server) handleRawConn(lisAddr string, rawConn net.Conn) {
 		return
 	}
 	rawConn.SetDeadline(time.Now().Add(s.opts.connectionTimeout))
-	conn, authInfo, err := s.useTransportAuthenticator(rawConn)
-	if err != nil {
-		// ErrConnDispatched means that the connection was dispatched away from
-		// gRPC; those connections should be left open.
-		if err != credentials.ErrConnDispatched {
-			// In deployments where a gRPC server runs behind a cloud load
-			// balancer which performs regular TCP level health checks, the
-			// connection is closed immediately by the latter. Skipping the
-			// error here will help reduce log clutter.
-			if err != io.EOF {
-				s.mu.Lock()
-				s.errorf("ServerHandshake(%q) failed: %v", rawConn.RemoteAddr(), err)
-				s.mu.Unlock()
-				channelz.Warningf(logger, s.channelzID, "grpc: Server.Serve failed to complete security handshake from %q: %v", rawConn.RemoteAddr(), err)
-			}
-			rawConn.Close()
-		}
-		rawConn.SetDeadline(time.Time{})
-		return
-	}
 
 	// Finish handshaking (HTTP2)
-	st := s.newHTTP2Transport(conn, authInfo)
+	st := s.newHTTP2Transport(rawConn)
+	rawConn.SetDeadline(time.Time{})
 	if st == nil {
-		conn.Close()
 		return
 	}
 
-	rawConn.SetDeadline(time.Time{})
 	if !s.addConn(lisAddr, st) {
 		return
 	}
@@ -888,10 +861,11 @@ func (s *Server) drainServerTransports(addr string) {
 
 // newHTTP2Transport sets up a http/2 transport (using the
 // gRPC http2 server transport in transport/http2_server.go).
-func (s *Server) newHTTP2Transport(c net.Conn, authInfo credentials.AuthInfo) transport.ServerTransport {
+func (s *Server) newHTTP2Transport(c net.Conn) transport.ServerTransport {
 	config := &transport.ServerConfig{
 		MaxStreams:            s.opts.maxConcurrentStreams,
-		AuthInfo:              authInfo,
+		ConnectionTimeout:     s.opts.connectionTimeout,
+		Credentials:           s.opts.creds,
 		InTapHandle:           s.opts.inTapHandle,
 		StatsHandler:          s.opts.statsHandler,
 		KeepaliveParams:       s.opts.keepaliveParams,
@@ -909,8 +883,15 @@ func (s *Server) newHTTP2Transport(c net.Conn, authInfo credentials.AuthInfo) tr
 		s.mu.Lock()
 		s.errorf("NewServerTransport(%q) failed: %v", c.RemoteAddr(), err)
 		s.mu.Unlock()
-		c.Close()
+		// ErrConnDispatched means that the connection was dispatched away from
-		channelz.Warning(logger, s.channelzID, "grpc: Server.Serve failed to create ServerTransport: ", err)
+		// gRPC; those connections should be left open.
+		if err != credentials.ErrConnDispatched {
+			// Don't log on ErrConnDispatched and io.EOF to prevent log spam.
+			if err != io.EOF {
+				channelz.Warning(logger, s.channelzID, "grpc: Server.Serve failed to create ServerTransport: ", err)
+			}
+			c.Close()
+		}
 		return nil
 	}
 
@@ -1124,16 +1105,21 @@ func chainUnaryServerInterceptors(s *Server) {
 
 func chainUnaryInterceptors(interceptors []UnaryServerInterceptor) UnaryServerInterceptor {
 	return func(ctx context.Context, req interface{}, info *UnaryServerInfo, handler UnaryHandler) (interface{}, error) {
-		var i int
+		// the struct ensures the variables are allocated together, rather than separately, since we
-		var next UnaryHandler
+		// know they should be garbage collected together. This saves 1 allocation and decreases
-		next = func(ctx context.Context, req interface{}) (interface{}, error) {
+		// time/call by about 10% on the microbenchmark.
-			if i == len(interceptors)-1 {
+		var state struct {
-				return interceptors[i](ctx, req, info, handler)
+			i    int
-			}
+			next UnaryHandler
-			i++
-			return interceptors[i-1](ctx, req, info, next)
 		}
-		return next(ctx, req)
+		state.next = func(ctx context.Context, req interface{}) (interface{}, error) {
+			if state.i == len(interceptors)-1 {
+				return interceptors[state.i](ctx, req, info, handler)
+			}
+			state.i++
+			return interceptors[state.i-1](ctx, req, info, state.next)
+		}
+		return state.next(ctx, req)
 	}
 }
 
@@ -1298,9 +1284,10 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport.
 	if appErr != nil {
 		appStatus, ok := status.FromError(appErr)
 		if !ok {
-			// Convert appErr if it is not a grpc status error.
+			// Convert non-status application error to a status error with code
-			appErr = status.Error(codes.Unknown, appErr.Error())
+			// Unknown, but handle context errors specifically.
-			appStatus, _ = status.FromError(appErr)
+			appStatus = status.FromContextError(appErr)
+			appErr = appStatus.Err()
 		}
 		if trInfo != nil {
 			trInfo.tr.LazyLog(stringer(appStatus.Message()), true)
@@ -1409,16 +1396,21 @@ func chainStreamServerInterceptors(s *Server) {
 
 func chainStreamInterceptors(interceptors []StreamServerInterceptor) StreamServerInterceptor {
 	return func(srv interface{}, ss ServerStream, info *StreamServerInfo, handler StreamHandler) error {
-		var i int
+		// the struct ensures the variables are allocated together, rather than separately, since we
-		var next StreamHandler
+		// know they should be garbage collected together. This saves 1 allocation and decreases
-		next = func(srv interface{}, ss ServerStream) error {
+		// time/call by about 10% on the microbenchmark.
-			if i == len(interceptors)-1 {
+		var state struct {
-				return interceptors[i](srv, ss, info, handler)
+			i    int
-			}
+			next StreamHandler
-			i++
-			return interceptors[i-1](srv, ss, info, next)
 		}
-		return next(srv, ss)
+		state.next = func(srv interface{}, ss ServerStream) error {
+			if state.i == len(interceptors)-1 {
+				return interceptors[state.i](srv, ss, info, handler)
+			}
+			state.i++
+			return interceptors[state.i-1](srv, ss, info, state.next)
+		}
+		return state.next(srv, ss)
 	}
 }
 
@@ -1559,7 +1551,9 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp
 	if appErr != nil {
 		appStatus, ok := status.FromError(appErr)
 		if !ok {
-			appStatus = status.New(codes.Unknown, appErr.Error())
+			// Convert non-status application error to a status error with code
+			// Unknown, but handle context errors specifically.
+			appStatus = status.FromContextError(appErr)
 			appErr = appStatus.Err()
 		}
 		if trInfo != nil {
@@ -1716,11 +1710,7 @@ func (s *Server) Stop() {
 		s.done.Fire()
 	}()
 
-	s.channelzRemoveOnce.Do(func() {
+	s.channelzRemoveOnce.Do(func() { channelz.RemoveEntry(s.channelzID) })
-		if channelz.IsOn() {
-			channelz.RemoveEntry(s.channelzID)
-		}
-	})
 
 	s.mu.Lock()
 	listeners := s.lis
@@ -1758,11 +1748,7 @@ func (s *Server) GracefulStop() {
 	s.quit.Fire()
 	defer s.done.Fire()
 
-	s.channelzRemoveOnce.Do(func() {
+	s.channelzRemoveOnce.Do(func() { channelz.RemoveEntry(s.channelzID) })
-		if channelz.IsOn() {
-			channelz.RemoveEntry(s.channelzID)
-		}
-	})
 	s.mu.Lock()
 	if s.conns == nil {
 		s.mu.Unlock()
@@ -1815,12 +1801,26 @@ func (s *Server) getCodec(contentSubtype string) baseCodec {
 	return codec
 }
 
-// SetHeader sets the header metadata.
+// SetHeader sets the header metadata to be sent from the server to the client.
-// When called multiple times, all the provided metadata will be merged.
+// The context provided must be the context passed to the server's handler.
-// All the metadata will be sent out when one of the following happens:
+//
-//  - grpc.SendHeader() is called;
+// Streaming RPCs should prefer the SetHeader method of the ServerStream.
-//  - The first response is sent out;
+//
-//  - An RPC status is sent out (error or success).
+// When called multiple times, all the provided metadata will be merged.  All
+// the metadata will be sent out when one of the following happens:
+//
+// - grpc.SendHeader is called, or for streaming handlers, stream.SendHeader.
+// - The first response message is sent.  For unary handlers, this occurs when
+//   the handler returns; for streaming handlers, this can happen when stream's
+//   SendMsg method is called.
+// - An RPC status is sent out (error or success).  This occurs when the handler
+//   returns.
+//
+// SetHeader will fail if called after any of the events above.
+//
+// The error returned is compatible with the status package.  However, the
+// status code will often not match the RPC status as seen by the client
+// application, and therefore, should not be relied upon for this purpose.
 func SetHeader(ctx context.Context, md metadata.MD) error {
 	if md.Len() == 0 {
 		return nil
@@ -1832,8 +1832,14 @@ func SetHeader(ctx context.Context, md metadata.MD) error {
 	return stream.SetHeader(md)
 }
 
-// SendHeader sends header metadata. It may be called at most once.
+// SendHeader sends header metadata. It may be called at most once, and may not
-// The provided md and headers set by SetHeader() will be sent.
+// be called after any event that causes headers to be sent (see SetHeader for
+// a complete list).  The provided md and headers set by SetHeader() will be
+// sent.
+//
+// The error returned is compatible with the status package.  However, the
+// status code will often not match the RPC status as seen by the client
+// application, and therefore, should not be relied upon for this purpose.
 func SendHeader(ctx context.Context, md metadata.MD) error {
 	stream := ServerTransportStreamFromContext(ctx)
 	if stream == nil {
@@ -1847,6 +1853,10 @@ func SendHeader(ctx context.Context, md metadata.MD) error {
 
 // SetTrailer sets the trailer metadata that will be sent when an RPC returns.
 // When called more than once, all the provided metadata will be merged.
+//
+// The error returned is compatible with the status package.  However, the
+// status code will often not match the RPC status as seen by the client
+// application, and therefore, should not be relied upon for this purpose.
 func SetTrailer(ctx context.Context, md metadata.MD) error {
 	if md.Len() == 0 {
 		return nil

vendor/google.golang.org/grpc/service_config.go

@@ -218,7 +218,7 @@ type jsonSC struct {
 }
 
 func init() {
-	internal.ParseServiceConfigForTesting = parseServiceConfig
+	internal.ParseServiceConfig = parseServiceConfig
 }
 func parseServiceConfig(js string) *serviceconfig.ParseResult {
 	if len(js) == 0 {
@@ -381,6 +381,9 @@ func init() {
 //
 // If any of them is NOT *ServiceConfig, return false.
 func equalServiceConfig(a, b serviceconfig.Config) bool {
+	if a == nil && b == nil {
+		return true
+	}
 	aa, ok := a.(*ServiceConfig)
 	if !ok {
 		return false