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Update dependency go modules in client for k8s v1.26.0-rc.0

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Sunny Song
2022-12-05 18:24:18 +00:00
parent 7dcacc1a9f
commit 8aeed25ba0
2123 changed files with 989488 additions and 42 deletions
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108
client/vendor/k8s.io/client-go/discovery/aggregated_discovery.go generated vendored Normal file
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/*
Copyright 2022 The Kubernetes 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 discovery
import (
"fmt"
apidiscovery "k8s.io/api/apidiscovery/v2beta1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
)
// SplitGroupsAndResources transforms "aggregated" discovery top-level structure into
// the previous "unaggregated" discovery groups and resources.
func SplitGroupsAndResources(aggregatedGroups apidiscovery.APIGroupDiscoveryList) (*metav1.APIGroupList, map[schema.GroupVersion]*metav1.APIResourceList) {
// Aggregated group list will contain the entirety of discovery, including
// groups, versions, and resources.
groups := []*metav1.APIGroup{}
resourcesByGV := map[schema.GroupVersion]*metav1.APIResourceList{}
for _, aggGroup := range aggregatedGroups.Items {
group, resources := convertAPIGroup(aggGroup)
groups = append(groups, group)
for gv, resourceList := range resources {
resourcesByGV[gv] = resourceList
}
}
// Transform slice of groups to group list before returning.
groupList := &metav1.APIGroupList{}
groupList.Groups = make([]metav1.APIGroup, 0, len(groups))
for _, group := range groups {
groupList.Groups = append(groupList.Groups, *group)
}
return groupList, resourcesByGV
}
// convertAPIGroup tranforms an "aggregated" APIGroupDiscovery to an "legacy" APIGroup,
// also returning the map of APIResourceList for resources within GroupVersions.
func convertAPIGroup(g apidiscovery.APIGroupDiscovery) (*metav1.APIGroup, map[schema.GroupVersion]*metav1.APIResourceList) {
// Iterate through versions to convert to group and resources.
group := &metav1.APIGroup{}
gvResources := map[schema.GroupVersion]*metav1.APIResourceList{}
group.Name = g.ObjectMeta.Name
for i, v := range g.Versions {
version := metav1.GroupVersionForDiscovery{}
gv := schema.GroupVersion{Group: g.Name, Version: v.Version}
version.GroupVersion = gv.String()
version.Version = v.Version
group.Versions = append(group.Versions, version)
if i == 0 {
group.PreferredVersion = version
}
resourceList := &metav1.APIResourceList{}
resourceList.GroupVersion = gv.String()
for _, r := range v.Resources {
resource := convertAPIResource(r)
resourceList.APIResources = append(resourceList.APIResources, resource)
// Subresources field in new format get transformed into full APIResources.
for _, subresource := range r.Subresources {
sr := convertAPISubresource(resource, subresource)
resourceList.APIResources = append(resourceList.APIResources, sr)
}
}
gvResources[gv] = resourceList
}
return group, gvResources
}
// convertAPIResource tranforms a APIResourceDiscovery to an APIResource.
func convertAPIResource(in apidiscovery.APIResourceDiscovery) metav1.APIResource {
return metav1.APIResource{
Name: in.Resource,
SingularName: in.SingularResource,
Namespaced: in.Scope == apidiscovery.ScopeNamespace,
Group: in.ResponseKind.Group,
Version: in.ResponseKind.Version,
Kind: in.ResponseKind.Kind,
Verbs: in.Verbs,
ShortNames: in.ShortNames,
Categories: in.Categories,
}
}
// convertAPISubresource tranforms a APISubresourceDiscovery to an APIResource.
func convertAPISubresource(parent metav1.APIResource, in apidiscovery.APISubresourceDiscovery) metav1.APIResource {
return metav1.APIResource{
Name: fmt.Sprintf("%s/%s", parent.Name, in.Subresource),
SingularName: parent.SingularName,
Namespaced: parent.Namespaced,
Group: in.ResponseKind.Group,
Version: in.ResponseKind.Version,
Kind: in.ResponseKind.Kind,
Verbs: in.Verbs,
}
}

705
client/vendor/k8s.io/client-go/discovery/discovery_client.go generated vendored Normal file
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/*
Copyright 2015 The Kubernetes 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 discovery
import (
"context"
"encoding/json"
"fmt"
"net/http"
"net/url"
"sort"
"strings"
"sync"
"time"
//nolint:staticcheck // SA1019 Keep using module since it's still being maintained and the api of google.golang.org/protobuf/proto differs
"github.com/golang/protobuf/proto"
openapi_v2 "github.com/google/gnostic/openapiv2"
apidiscovery "k8s.io/api/apidiscovery/v2beta1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/runtime/serializer"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/version"
"k8s.io/client-go/kubernetes/scheme"
"k8s.io/client-go/openapi"
restclient "k8s.io/client-go/rest"
)
const (
// defaultRetries is the number of times a resource discovery is repeated if an api group disappears on the fly (e.g. CustomResourceDefinitions).
defaultRetries = 2
// protobuf mime type
openAPIV2mimePb = "application/com.github.proto-openapi.spec.v2@v1.0+protobuf"
// defaultTimeout is the maximum amount of time per request when no timeout has been set on a RESTClient.
// Defaults to 32s in order to have a distinguishable length of time, relative to other timeouts that exist.
defaultTimeout = 32 * time.Second
// defaultBurst is the default burst to be used with the discovery client's token bucket rate limiter
defaultBurst = 300
AcceptV1 = runtime.ContentTypeJSON
// Aggregated discovery content-type (currently v2beta1). NOTE: Currently, we are assuming the order
// for "g", "v", and "as" from the server. We can only compare this string if we can make that assumption.
AcceptV2Beta1 = runtime.ContentTypeJSON + ";" + "g=apidiscovery.k8s.io;v=v2beta1;as=APIGroupDiscoveryList"
// Prioritize aggregated discovery by placing first in the order of discovery accept types.
acceptDiscoveryFormats = AcceptV2Beta1 + "," + AcceptV1
)
// DiscoveryInterface holds the methods that discover server-supported API groups,
// versions and resources.
type DiscoveryInterface interface {
RESTClient() restclient.Interface
ServerGroupsInterface
ServerResourcesInterface
ServerVersionInterface
OpenAPISchemaInterface
OpenAPIV3SchemaInterface
// Returns copy of current discovery client that will only
// receive the legacy discovery format, or pointer to current
// discovery client if it does not support legacy-only discovery.
WithLegacy() DiscoveryInterface
}
// AggregatedDiscoveryInterface extends DiscoveryInterface to include a method to possibly
// return discovery resources along with the discovery groups, which is what the newer
// aggregated discovery format does (APIGroupDiscoveryList).
type AggregatedDiscoveryInterface interface {
DiscoveryInterface
GroupsAndMaybeResources() (*metav1.APIGroupList, map[schema.GroupVersion]*metav1.APIResourceList, error)
}
// CachedDiscoveryInterface is a DiscoveryInterface with cache invalidation and freshness.
// Note that If the ServerResourcesForGroupVersion method returns a cache miss
// error, the user needs to explicitly call Invalidate to clear the cache,
// otherwise the same cache miss error will be returned next time.
type CachedDiscoveryInterface interface {
DiscoveryInterface
// Fresh is supposed to tell the caller whether or not to retry if the cache
// fails to find something (false = retry, true = no need to retry).
//
// TODO: this needs to be revisited, this interface can't be locked properly
// and doesn't make a lot of sense.
Fresh() bool
// Invalidate enforces that no cached data that is older than the current time
// is used.
Invalidate()
}
// ServerGroupsInterface has methods for obtaining supported groups on the API server
type ServerGroupsInterface interface {
// ServerGroups returns the supported groups, with information like supported versions and the
// preferred version.
ServerGroups() (*metav1.APIGroupList, error)
}
// ServerResourcesInterface has methods for obtaining supported resources on the API server
type ServerResourcesInterface interface {
// ServerResourcesForGroupVersion returns the supported resources for a group and version.
ServerResourcesForGroupVersion(groupVersion string) (*metav1.APIResourceList, error)
// ServerGroupsAndResources returns the supported groups and resources for all groups and versions.
//
// The returned group and resource lists might be non-nil with partial results even in the
// case of non-nil error.
ServerGroupsAndResources() ([]*metav1.APIGroup, []*metav1.APIResourceList, error)
// ServerPreferredResources returns the supported resources with the version preferred by the
// server.
//
// The returned group and resource lists might be non-nil with partial results even in the
// case of non-nil error.
ServerPreferredResources() ([]*metav1.APIResourceList, error)
// ServerPreferredNamespacedResources returns the supported namespaced resources with the
// version preferred by the server.
//
// The returned resource list might be non-nil with partial results even in the case of
// non-nil error.
ServerPreferredNamespacedResources() ([]*metav1.APIResourceList, error)
}
// ServerVersionInterface has a method for retrieving the server's version.
type ServerVersionInterface interface {
// ServerVersion retrieves and parses the server's version (git version).
ServerVersion() (*version.Info, error)
}
// OpenAPISchemaInterface has a method to retrieve the open API schema.
type OpenAPISchemaInterface interface {
// OpenAPISchema retrieves and parses the swagger API schema the server supports.
OpenAPISchema() (*openapi_v2.Document, error)
}
type OpenAPIV3SchemaInterface interface {
OpenAPIV3() openapi.Client
}
// DiscoveryClient implements the functions that discover server-supported API groups,
// versions and resources.
type DiscoveryClient struct {
restClient restclient.Interface
LegacyPrefix string
// Forces the client to request only "unaggregated" (legacy) discovery.
UseLegacyDiscovery bool
}
var _ AggregatedDiscoveryInterface = &DiscoveryClient{}
// Convert metav1.APIVersions to metav1.APIGroup. APIVersions is used by legacy v1, so
// group would be "".
func apiVersionsToAPIGroup(apiVersions *metav1.APIVersions) (apiGroup metav1.APIGroup) {
groupVersions := []metav1.GroupVersionForDiscovery{}
for _, version := range apiVersions.Versions {
groupVersion := metav1.GroupVersionForDiscovery{
GroupVersion: version,
Version: version,
}
groupVersions = append(groupVersions, groupVersion)
}
apiGroup.Versions = groupVersions
// There should be only one groupVersion returned at /api
apiGroup.PreferredVersion = groupVersions[0]
return
}
// GroupsAndMaybeResources returns the discovery groups, and (if new aggregated
// discovery format) the resources keyed by group/version. Merges discovery groups
// and resources from /api and /apis (either aggregated or not). Legacy groups
// must be ordered first. The server will either return both endpoints (/api, /apis)
// as aggregated discovery format or legacy format. For safety, resources will only
// be returned if both endpoints returned resources.
func (d *DiscoveryClient) GroupsAndMaybeResources() (*metav1.APIGroupList, map[schema.GroupVersion]*metav1.APIResourceList, error) {
// Legacy group ordered first (there is only one -- core/v1 group). Returned groups must
// be non-nil, but it could be empty. Returned resources, apiResources map could be nil.
groups, resources, err := d.downloadLegacy()
if err != nil {
return nil, nil, err
}
// Discovery groups and (possibly) resources downloaded from /apis.
apiGroups, apiResources, aerr := d.downloadAPIs()
if err != nil {
return nil, nil, aerr
}
// Merge apis groups into the legacy groups.
for _, group := range apiGroups.Groups {
groups.Groups = append(groups.Groups, group)
}
// For safety, only return resources if both endpoints returned resources.
if resources != nil && apiResources != nil {
for gv, resourceList := range apiResources {
resources[gv] = resourceList
}
} else if resources != nil {
resources = nil
}
return groups, resources, err
}
// downloadLegacy returns the discovery groups and possibly resources
// for the legacy v1 GVR at /api, or an error if one occurred. It is
// possible for the resource map to be nil if the server returned
// the unaggregated discovery.
func (d *DiscoveryClient) downloadLegacy() (*metav1.APIGroupList, map[schema.GroupVersion]*metav1.APIResourceList, error) {
accept := acceptDiscoveryFormats
if d.UseLegacyDiscovery {
accept = AcceptV1
}
var responseContentType string
body, err := d.restClient.Get().
AbsPath("/api").
SetHeader("Accept", accept).
Do(context.TODO()).
ContentType(&responseContentType).
Raw()
// Special error handling for 403 or 404 to be compatible with older v1.0 servers.
// Return empty group list to be merged with /apis.
if err != nil && !errors.IsNotFound(err) && !errors.IsForbidden(err) {
return nil, nil, err
}
if err != nil && (errors.IsNotFound(err) || errors.IsForbidden(err)) {
return &metav1.APIGroupList{}, nil, nil
}
apiGroupList := &metav1.APIGroupList{}
var resourcesByGV map[schema.GroupVersion]*metav1.APIResourceList
// Switch on content-type server responded with: aggregated or unaggregated.
switch responseContentType {
case AcceptV1:
var v metav1.APIVersions
err = json.Unmarshal(body, &v)
if err != nil {
return nil, nil, err
}
apiGroup := metav1.APIGroup{}
if len(v.Versions) != 0 {
apiGroup = apiVersionsToAPIGroup(&v)
}
apiGroupList.Groups = []metav1.APIGroup{apiGroup}
case AcceptV2Beta1:
var aggregatedDiscovery apidiscovery.APIGroupDiscoveryList
err = json.Unmarshal(body, &aggregatedDiscovery)
if err != nil {
return nil, nil, err
}
apiGroupList, resourcesByGV = SplitGroupsAndResources(aggregatedDiscovery)
default:
return nil, nil, fmt.Errorf("Unknown discovery response content-type: %s", responseContentType)
}
return apiGroupList, resourcesByGV, nil
}
// downloadAPIs returns the discovery groups and (if aggregated format) the
// discovery resources. The returned groups will always exist, but the
// resources map may be nil.
func (d *DiscoveryClient) downloadAPIs() (*metav1.APIGroupList, map[schema.GroupVersion]*metav1.APIResourceList, error) {
accept := acceptDiscoveryFormats
if d.UseLegacyDiscovery {
accept = AcceptV1
}
var responseContentType string
body, err := d.restClient.Get().
AbsPath("/apis").
SetHeader("Accept", accept).
Do(context.TODO()).
ContentType(&responseContentType).
Raw()
// Special error handling for 403 or 404 to be compatible with older v1.0 servers.
// Return empty group list to be merged with /api.
if err != nil && !errors.IsNotFound(err) && !errors.IsForbidden(err) {
return nil, nil, err
}
if err != nil && (errors.IsNotFound(err) || errors.IsForbidden(err)) {
return &metav1.APIGroupList{}, nil, nil
}
apiGroupList := &metav1.APIGroupList{}
var resourcesByGV map[schema.GroupVersion]*metav1.APIResourceList
// Switch on content-type server responded with: aggregated or unaggregated.
switch responseContentType {
case AcceptV1:
err = json.Unmarshal(body, apiGroupList)
if err != nil {
return nil, nil, err
}
case AcceptV2Beta1:
var aggregatedDiscovery apidiscovery.APIGroupDiscoveryList
err = json.Unmarshal(body, &aggregatedDiscovery)
if err != nil {
return nil, nil, err
}
apiGroupList, resourcesByGV = SplitGroupsAndResources(aggregatedDiscovery)
default:
return nil, nil, fmt.Errorf("Unknown discovery response content-type: %s", responseContentType)
}
return apiGroupList, resourcesByGV, nil
}
// ServerGroups returns the supported groups, with information like supported versions and the
// preferred version.
func (d *DiscoveryClient) ServerGroups() (*metav1.APIGroupList, error) {
groups, _, err := d.GroupsAndMaybeResources()
if err != nil {
return nil, err
}
return groups, nil
}
// ServerResourcesForGroupVersion returns the supported resources for a group and version.
func (d *DiscoveryClient) ServerResourcesForGroupVersion(groupVersion string) (resources *metav1.APIResourceList, err error) {
url := url.URL{}
if len(groupVersion) == 0 {
return nil, fmt.Errorf("groupVersion shouldn't be empty")
}
if len(d.LegacyPrefix) > 0 && groupVersion == "v1" {
url.Path = d.LegacyPrefix + "/" + groupVersion
} else {
url.Path = "/apis/" + groupVersion
}
resources = &metav1.APIResourceList{
GroupVersion: groupVersion,
}
err = d.restClient.Get().AbsPath(url.String()).Do(context.TODO()).Into(resources)
if err != nil {
// ignore 403 or 404 error to be compatible with an v1.0 server.
if groupVersion == "v1" && (errors.IsNotFound(err) || errors.IsForbidden(err)) {
return resources, nil
}
return nil, err
}
return resources, nil
}
// ServerGroupsAndResources returns the supported resources for all groups and versions.
func (d *DiscoveryClient) ServerGroupsAndResources() ([]*metav1.APIGroup, []*metav1.APIResourceList, error) {
return withRetries(defaultRetries, func() ([]*metav1.APIGroup, []*metav1.APIResourceList, error) {
return ServerGroupsAndResources(d)
})
}
// ErrGroupDiscoveryFailed is returned if one or more API groups fail to load.
type ErrGroupDiscoveryFailed struct {
// Groups is a list of the groups that failed to load and the error cause
Groups map[schema.GroupVersion]error
}
// Error implements the error interface
func (e *ErrGroupDiscoveryFailed) Error() string {
var groups []string
for k, v := range e.Groups {
groups = append(groups, fmt.Sprintf("%s: %v", k, v))
}
sort.Strings(groups)
return fmt.Sprintf("unable to retrieve the complete list of server APIs: %s", strings.Join(groups, ", "))
}
// IsGroupDiscoveryFailedError returns true if the provided error indicates the server was unable to discover
// a complete list of APIs for the client to use.
func IsGroupDiscoveryFailedError(err error) bool {
_, ok := err.(*ErrGroupDiscoveryFailed)
return err != nil && ok
}
func ServerGroupsAndResources(d DiscoveryInterface) ([]*metav1.APIGroup, []*metav1.APIResourceList, error) {
var sgs *metav1.APIGroupList
var resources []*metav1.APIResourceList
var err error
// If the passed discovery object implements the wider AggregatedDiscoveryInterface,
// then attempt to retrieve aggregated discovery with both groups and the resources.
if ad, ok := d.(AggregatedDiscoveryInterface); ok {
var resourcesByGV map[schema.GroupVersion]*metav1.APIResourceList
sgs, resourcesByGV, err = ad.GroupsAndMaybeResources()
for _, resourceList := range resourcesByGV {
resources = append(resources, resourceList)
}
} else {
sgs, err = d.ServerGroups()
}
if sgs == nil {
return nil, nil, err
}
resultGroups := []*metav1.APIGroup{}
for i := range sgs.Groups {
resultGroups = append(resultGroups, &sgs.Groups[i])
}
if resources != nil {
return resultGroups, resources, nil
}
groupVersionResources, failedGroups := fetchGroupVersionResources(d, sgs)
// order results by group/version discovery order
result := []*metav1.APIResourceList{}
for _, apiGroup := range sgs.Groups {
for _, version := range apiGroup.Versions {
gv := schema.GroupVersion{Group: apiGroup.Name, Version: version.Version}
if resources, ok := groupVersionResources[gv]; ok {
result = append(result, resources)
}
}
}
if len(failedGroups) == 0 {
return resultGroups, result, nil
}
return resultGroups, result, &ErrGroupDiscoveryFailed{Groups: failedGroups}
}
// ServerPreferredResources uses the provided discovery interface to look up preferred resources
func ServerPreferredResources(d DiscoveryInterface) ([]*metav1.APIResourceList, error) {
var serverGroupList *metav1.APIGroupList
var failedGroups map[schema.GroupVersion]error
var groupVersionResources map[schema.GroupVersion]*metav1.APIResourceList
var err error
// If the passed discovery object implements the wider AggregatedDiscoveryInterface,
// then it is attempt to retrieve both the groups and the resources.
ad, ok := d.(AggregatedDiscoveryInterface)
if ok {
serverGroupList, groupVersionResources, err = ad.GroupsAndMaybeResources()
} else {
serverGroupList, err = d.ServerGroups()
}
if err != nil {
return nil, err
}
if groupVersionResources == nil {
groupVersionResources, failedGroups = fetchGroupVersionResources(d, serverGroupList)
}
result := []*metav1.APIResourceList{}
grVersions := map[schema.GroupResource]string{} // selected version of a GroupResource
grAPIResources := map[schema.GroupResource]*metav1.APIResource{} // selected APIResource for a GroupResource
gvAPIResourceLists := map[schema.GroupVersion]*metav1.APIResourceList{} // blueprint for a APIResourceList for later grouping
for _, apiGroup := range serverGroupList.Groups {
for _, version := range apiGroup.Versions {
groupVersion := schema.GroupVersion{Group: apiGroup.Name, Version: version.Version}
apiResourceList, ok := groupVersionResources[groupVersion]
if !ok {
continue
}
// create empty list which is filled later in another loop
emptyAPIResourceList := metav1.APIResourceList{
GroupVersion: version.GroupVersion,
}
gvAPIResourceLists[groupVersion] = &emptyAPIResourceList
result = append(result, &emptyAPIResourceList)
for i := range apiResourceList.APIResources {
apiResource := &apiResourceList.APIResources[i]
if strings.Contains(apiResource.Name, "/") {
continue
}
gv := schema.GroupResource{Group: apiGroup.Name, Resource: apiResource.Name}
if _, ok := grAPIResources[gv]; ok && version.Version != apiGroup.PreferredVersion.Version {
// only override with preferred version
continue
}
grVersions[gv] = version.Version
grAPIResources[gv] = apiResource
}
}
}
// group selected APIResources according to GroupVersion into APIResourceLists
for groupResource, apiResource := range grAPIResources {
version := grVersions[groupResource]
groupVersion := schema.GroupVersion{Group: groupResource.Group, Version: version}
apiResourceList := gvAPIResourceLists[groupVersion]
apiResourceList.APIResources = append(apiResourceList.APIResources, *apiResource)
}
if len(failedGroups) == 0 {
return result, nil
}
return result, &ErrGroupDiscoveryFailed{Groups: failedGroups}
}
// fetchServerResourcesForGroupVersions uses the discovery client to fetch the resources for the specified groups in parallel.
func fetchGroupVersionResources(d DiscoveryInterface, apiGroups *metav1.APIGroupList) (map[schema.GroupVersion]*metav1.APIResourceList, map[schema.GroupVersion]error) {
groupVersionResources := make(map[schema.GroupVersion]*metav1.APIResourceList)
failedGroups := make(map[schema.GroupVersion]error)
wg := &sync.WaitGroup{}
resultLock := &sync.Mutex{}
for _, apiGroup := range apiGroups.Groups {
for _, version := range apiGroup.Versions {
groupVersion := schema.GroupVersion{Group: apiGroup.Name, Version: version.Version}
wg.Add(1)
go func() {
defer wg.Done()
defer utilruntime.HandleCrash()
apiResourceList, err := d.ServerResourcesForGroupVersion(groupVersion.String())
// lock to record results
resultLock.Lock()
defer resultLock.Unlock()
if err != nil {
// TODO: maybe restrict this to NotFound errors
failedGroups[groupVersion] = err
}
if apiResourceList != nil {
// even in case of error, some fallback might have been returned
groupVersionResources[groupVersion] = apiResourceList
}
}()
}
}
wg.Wait()
return groupVersionResources, failedGroups
}
// ServerPreferredResources returns the supported resources with the version preferred by the
// server.
func (d *DiscoveryClient) ServerPreferredResources() ([]*metav1.APIResourceList, error) {
_, rs, err := withRetries(defaultRetries, func() ([]*metav1.APIGroup, []*metav1.APIResourceList, error) {
rs, err := ServerPreferredResources(d)
return nil, rs, err
})
return rs, err
}
// ServerPreferredNamespacedResources returns the supported namespaced resources with the
// version preferred by the server.
func (d *DiscoveryClient) ServerPreferredNamespacedResources() ([]*metav1.APIResourceList, error) {
return ServerPreferredNamespacedResources(d)
}
// ServerPreferredNamespacedResources uses the provided discovery interface to look up preferred namespaced resources
func ServerPreferredNamespacedResources(d DiscoveryInterface) ([]*metav1.APIResourceList, error) {
all, err := ServerPreferredResources(d)
return FilteredBy(ResourcePredicateFunc(func(groupVersion string, r *metav1.APIResource) bool {
return r.Namespaced
}), all), err
}
// ServerVersion retrieves and parses the server's version (git version).
func (d *DiscoveryClient) ServerVersion() (*version.Info, error) {
body, err := d.restClient.Get().AbsPath("/version").Do(context.TODO()).Raw()
if err != nil {
return nil, err
}
var info version.Info
err = json.Unmarshal(body, &info)
if err != nil {
return nil, fmt.Errorf("unable to parse the server version: %v", err)
}
return &info, nil
}
// OpenAPISchema fetches the open api v2 schema using a rest client and parses the proto.
func (d *DiscoveryClient) OpenAPISchema() (*openapi_v2.Document, error) {
data, err := d.restClient.Get().AbsPath("/openapi/v2").SetHeader("Accept", openAPIV2mimePb).Do(context.TODO()).Raw()
if err != nil {
if errors.IsForbidden(err) || errors.IsNotFound(err) || errors.IsNotAcceptable(err) {
// single endpoint not found/registered in old server, try to fetch old endpoint
// TODO: remove this when kubectl/client-go don't work with 1.9 server
data, err = d.restClient.Get().AbsPath("/swagger-2.0.0.pb-v1").Do(context.TODO()).Raw()
if err != nil {
return nil, err
}
} else {
return nil, err
}
}
document := &openapi_v2.Document{}
err = proto.Unmarshal(data, document)
if err != nil {
return nil, err
}
return document, nil
}
func (d *DiscoveryClient) OpenAPIV3() openapi.Client {
return openapi.NewClient(d.restClient)
}
// WithLegacy returns copy of current discovery client that will only
// receive the legacy discovery format.
func (d *DiscoveryClient) WithLegacy() DiscoveryInterface {
client := *d
client.UseLegacyDiscovery = true
return &client
}
// withRetries retries the given recovery function in case the groups supported by the server change after ServerGroup() returns.
func withRetries(maxRetries int, f func() ([]*metav1.APIGroup, []*metav1.APIResourceList, error)) ([]*metav1.APIGroup, []*metav1.APIResourceList, error) {
var result []*metav1.APIResourceList
var resultGroups []*metav1.APIGroup
var err error
for i := 0; i < maxRetries; i++ {
resultGroups, result, err = f()
if err == nil {
return resultGroups, result, nil
}
if _, ok := err.(*ErrGroupDiscoveryFailed); !ok {
return nil, nil, err
}
}
return resultGroups, result, err
}
func setDiscoveryDefaults(config *restclient.Config) error {
config.APIPath = ""
config.GroupVersion = nil
if config.Timeout == 0 {
config.Timeout = defaultTimeout
}
// if a burst limit is not already configured
if config.Burst == 0 {
// discovery is expected to be bursty, increase the default burst
// to accommodate looking up resource info for many API groups.
// matches burst set by ConfigFlags#ToDiscoveryClient().
// see https://issue.k8s.io/86149
config.Burst = defaultBurst
}
codec := runtime.NoopEncoder{Decoder: scheme.Codecs.UniversalDecoder()}
config.NegotiatedSerializer = serializer.NegotiatedSerializerWrapper(runtime.SerializerInfo{Serializer: codec})
if len(config.UserAgent) == 0 {
config.UserAgent = restclient.DefaultKubernetesUserAgent()
}
return nil
}
// NewDiscoveryClientForConfig creates a new DiscoveryClient for the given config. This client
// can be used to discover supported resources in the API server.
// NewDiscoveryClientForConfig is equivalent to NewDiscoveryClientForConfigAndClient(c, httpClient),
// where httpClient was generated with rest.HTTPClientFor(c).
func NewDiscoveryClientForConfig(c *restclient.Config) (*DiscoveryClient, error) {
config := *c
if err := setDiscoveryDefaults(&config); err != nil {
return nil, err
}
httpClient, err := restclient.HTTPClientFor(&config)
if err != nil {
return nil, err
}
return NewDiscoveryClientForConfigAndClient(&config, httpClient)
}
// NewDiscoveryClientForConfigAndClient creates a new DiscoveryClient for the given config. This client
// can be used to discover supported resources in the API server.
// Note the http client provided takes precedence over the configured transport values.
func NewDiscoveryClientForConfigAndClient(c *restclient.Config, httpClient *http.Client) (*DiscoveryClient, error) {
config := *c
if err := setDiscoveryDefaults(&config); err != nil {
return nil, err
}
client, err := restclient.UnversionedRESTClientForConfigAndClient(&config, httpClient)
return &DiscoveryClient{restClient: client, LegacyPrefix: "/api", UseLegacyDiscovery: false}, err
}
// NewDiscoveryClientForConfigOrDie creates a new DiscoveryClient for the given config. If
// there is an error, it panics.
func NewDiscoveryClientForConfigOrDie(c *restclient.Config) *DiscoveryClient {
client, err := NewDiscoveryClientForConfig(c)
if err != nil {
panic(err)
}
return client
}
// NewDiscoveryClient returns a new DiscoveryClient for the given RESTClient.
func NewDiscoveryClient(c restclient.Interface) *DiscoveryClient {
return &DiscoveryClient{restClient: c, LegacyPrefix: "/api", UseLegacyDiscovery: false}
}
// RESTClient returns a RESTClient that is used to communicate
// with API server by this client implementation.
func (d *DiscoveryClient) RESTClient() restclient.Interface {
if d == nil {
return nil
}
return d.restClient
}

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/*
Copyright 2018 The Kubernetes 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 discovery provides ways to discover server-supported
// API groups, versions and resources.
package discovery // import "k8s.io/client-go/discovery"

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/*
Copyright 2016 The Kubernetes 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 fake
import (
"fmt"
"net/http"
openapi_v2 "github.com/google/gnostic/openapiv2"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/version"
"k8s.io/client-go/discovery"
"k8s.io/client-go/openapi"
kubeversion "k8s.io/client-go/pkg/version"
restclient "k8s.io/client-go/rest"
"k8s.io/client-go/testing"
)
// FakeDiscovery implements discovery.DiscoveryInterface and sometimes calls testing.Fake.Invoke with an action,
// but doesn't respect the return value if any. There is a way to fake static values like ServerVersion by using the Faked... fields on the struct.
type FakeDiscovery struct {
*testing.Fake
FakedServerVersion *version.Info
}
// ServerResourcesForGroupVersion returns the supported resources for a group
// and version.
func (c *FakeDiscovery) ServerResourcesForGroupVersion(groupVersion string) (*metav1.APIResourceList, error) {
action := testing.ActionImpl{
Verb: "get",
Resource: schema.GroupVersionResource{Resource: "resource"},
}
c.Invokes(action, nil)
for _, resourceList := range c.Resources {
if resourceList.GroupVersion == groupVersion {
return resourceList, nil
}
}
return nil, &errors.StatusError{
ErrStatus: metav1.Status{
Status: metav1.StatusFailure,
Code: http.StatusNotFound,
Reason: metav1.StatusReasonNotFound,
Message: fmt.Sprintf("the server could not find the requested resource, GroupVersion %q not found", groupVersion),
}}
}
// ServerGroupsAndResources returns the supported groups and resources for all groups and versions.
func (c *FakeDiscovery) ServerGroupsAndResources() ([]*metav1.APIGroup, []*metav1.APIResourceList, error) {
sgs, err := c.ServerGroups()
if err != nil {
return nil, nil, err
}
resultGroups := []*metav1.APIGroup{}
for i := range sgs.Groups {
resultGroups = append(resultGroups, &sgs.Groups[i])
}
action := testing.ActionImpl{
Verb: "get",
Resource: schema.GroupVersionResource{Resource: "resource"},
}
c.Invokes(action, nil)
return resultGroups, c.Resources, nil
}
// ServerPreferredResources returns the supported resources with the version
// preferred by the server.
func (c *FakeDiscovery) ServerPreferredResources() ([]*metav1.APIResourceList, error) {
return nil, nil
}
// ServerPreferredNamespacedResources returns the supported namespaced resources
// with the version preferred by the server.
func (c *FakeDiscovery) ServerPreferredNamespacedResources() ([]*metav1.APIResourceList, error) {
return nil, nil
}
// ServerGroups returns the supported groups, with information like supported
// versions and the preferred version.
func (c *FakeDiscovery) ServerGroups() (*metav1.APIGroupList, error) {
action := testing.ActionImpl{
Verb: "get",
Resource: schema.GroupVersionResource{Resource: "group"},
}
c.Invokes(action, nil)
groups := map[string]*metav1.APIGroup{}
for _, res := range c.Resources {
gv, err := schema.ParseGroupVersion(res.GroupVersion)
if err != nil {
return nil, err
}
group := groups[gv.Group]
if group == nil {
group = &metav1.APIGroup{
Name: gv.Group,
PreferredVersion: metav1.GroupVersionForDiscovery{
GroupVersion: res.GroupVersion,
Version: gv.Version,
},
}
groups[gv.Group] = group
}
group.Versions = append(group.Versions, metav1.GroupVersionForDiscovery{
GroupVersion: res.GroupVersion,
Version: gv.Version,
})
}
list := &metav1.APIGroupList{}
for _, apiGroup := range groups {
list.Groups = append(list.Groups, *apiGroup)
}
return list, nil
}
// ServerVersion retrieves and parses the server's version.
func (c *FakeDiscovery) ServerVersion() (*version.Info, error) {
action := testing.ActionImpl{}
action.Verb = "get"
action.Resource = schema.GroupVersionResource{Resource: "version"}
c.Invokes(action, nil)
if c.FakedServerVersion != nil {
return c.FakedServerVersion, nil
}
versionInfo := kubeversion.Get()
return &versionInfo, nil
}
// OpenAPISchema retrieves and parses the swagger API schema the server supports.
func (c *FakeDiscovery) OpenAPISchema() (*openapi_v2.Document, error) {
return &openapi_v2.Document{}, nil
}
func (c *FakeDiscovery) OpenAPIV3() openapi.Client {
panic("unimplemented")
}
// RESTClient returns a RESTClient that is used to communicate with API server
// by this client implementation.
func (c *FakeDiscovery) RESTClient() restclient.Interface {
return nil
}
func (c *FakeDiscovery) WithLegacy() discovery.DiscoveryInterface {
panic("unimplemented")
}

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/*
Copyright 2016 The Kubernetes 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 discovery
import (
"fmt"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/util/sets"
apimachineryversion "k8s.io/apimachinery/pkg/version"
)
// IsResourceEnabled queries the server to determine if the resource specified is present on the server.
// This is particularly helpful when writing a controller or an e2e test that requires a particular resource to function.
func IsResourceEnabled(client DiscoveryInterface, resourceToCheck schema.GroupVersionResource) (bool, error) {
// this is a single request. The ServerResourcesForGroupVersion handles the core v1 group as legacy.
resourceList, err := client.ServerResourcesForGroupVersion(resourceToCheck.GroupVersion().String())
if apierrors.IsNotFound(err) { // if the discovery endpoint isn't present, then the resource isn't present.
return false, nil
}
if err != nil {
return false, err
}
for _, actualResource := range resourceList.APIResources {
if actualResource.Name == resourceToCheck.Resource {
return true, nil
}
}
return false, nil
}
// MatchesServerVersion queries the server to compares the build version
// (git hash) of the client with the server's build version. It returns an error
// if it failed to contact the server or if the versions are not an exact match.
func MatchesServerVersion(clientVersion apimachineryversion.Info, client DiscoveryInterface) error {
sVer, err := client.ServerVersion()
if err != nil {
return fmt.Errorf("couldn't read version from server: %v", err)
}
// GitVersion includes GitCommit and GitTreeState, but best to be safe?
if clientVersion.GitVersion != sVer.GitVersion || clientVersion.GitCommit != sVer.GitCommit || clientVersion.GitTreeState != sVer.GitTreeState {
return fmt.Errorf("server version (%#v) differs from client version (%#v)", sVer, clientVersion)
}
return nil
}
// ServerSupportsVersion returns an error if the server doesn't have the required version
func ServerSupportsVersion(client DiscoveryInterface, requiredGV schema.GroupVersion) error {
groups, err := client.ServerGroups()
if err != nil {
// This is almost always a connection error, and higher level code should treat this as a generic error,
// not a negotiation specific error.
return err
}
versions := metav1.ExtractGroupVersions(groups)
serverVersions := sets.String{}
for _, v := range versions {
serverVersions.Insert(v)
}
if serverVersions.Has(requiredGV.String()) {
return nil
}
// If the server supports no versions, then we should pretend it has the version because of old servers.
// This can happen because discovery fails due to 403 Forbidden errors
if len(serverVersions) == 0 {
return nil
}
return fmt.Errorf("server does not support API version %q", requiredGV)
}
// GroupVersionResources converts APIResourceLists to the GroupVersionResources.
func GroupVersionResources(rls []*metav1.APIResourceList) (map[schema.GroupVersionResource]struct{}, error) {
gvrs := map[schema.GroupVersionResource]struct{}{}
for _, rl := range rls {
gv, err := schema.ParseGroupVersion(rl.GroupVersion)
if err != nil {
return nil, err
}
for i := range rl.APIResources {
gvrs[schema.GroupVersionResource{Group: gv.Group, Version: gv.Version, Resource: rl.APIResources[i].Name}] = struct{}{}
}
}
return gvrs, nil
}
// FilteredBy filters by the given predicate. Empty APIResourceLists are dropped.
func FilteredBy(pred ResourcePredicate, rls []*metav1.APIResourceList) []*metav1.APIResourceList {
result := []*metav1.APIResourceList{}
for _, rl := range rls {
filtered := *rl
filtered.APIResources = nil
for i := range rl.APIResources {
if pred.Match(rl.GroupVersion, &rl.APIResources[i]) {
filtered.APIResources = append(filtered.APIResources, rl.APIResources[i])
}
}
if filtered.APIResources != nil {
result = append(result, &filtered)
}
}
return result
}
// ResourcePredicate has a method to check if a resource matches a given condition.
type ResourcePredicate interface {
Match(groupVersion string, r *metav1.APIResource) bool
}
// ResourcePredicateFunc returns true if it matches a resource based on a custom condition.
type ResourcePredicateFunc func(groupVersion string, r *metav1.APIResource) bool
// Match is a wrapper around ResourcePredicateFunc.
func (fn ResourcePredicateFunc) Match(groupVersion string, r *metav1.APIResource) bool {
return fn(groupVersion, r)
}
// SupportsAllVerbs is a predicate matching a resource iff all given verbs are supported.
type SupportsAllVerbs struct {
Verbs []string
}
// Match checks if a resource contains all the given verbs.
func (p SupportsAllVerbs) Match(groupVersion string, r *metav1.APIResource) bool {
return sets.NewString([]string(r.Verbs)...).HasAll(p.Verbs...)
}