Bump dependencies to Kubernetes 1.20

vendor/k8s.io/apimachinery/pkg/util/cache/expiring.go

@@ -145,7 +145,7 @@ func (c *Expiring) gc(now time.Time) {
 		// expired.
 		//
 		// heap[0] is a peek at the next element in the heap, which is not obvious
-		// from looking at the (*expiringHeap).Pop() implmentation below.
+		// from looking at the (*expiringHeap).Pop() implementation below.
 		// heap.Pop() swaps the first entry with the last entry of the heap, then
 		// calls (*expiringHeap).Pop() which returns the last element.
 		if len(c.heap) == 0 || now.Before(c.heap[0].expiry) {

vendor/k8s.io/apimachinery/pkg/util/clock/clock.go

@@ -348,7 +348,13 @@ func (f *fakeTimer) Stop() bool {
 // Reset conditionally updates the firing time of the timer.  If the
 // timer has neither fired nor been stopped then this call resets the
 // timer to the fake clock's "now" + d and returns true, otherwise
-// this call returns false.  This is like time.Timer::Reset.
+// it creates a new waiter, adds it to the clock, and returns true.
+//
+// It is not possible to return false, because a fake timer can be reset
+// from any state (waiting to fire, already fired, and stopped).
+//
+// See the GoDoc for time.Timer::Reset for more context on why
+// the return value of Reset() is not useful.
 func (f *fakeTimer) Reset(d time.Duration) bool {
 	f.fakeClock.lock.Lock()
 	defer f.fakeClock.lock.Unlock()
@@ -360,7 +366,15 @@ func (f *fakeTimer) Reset(d time.Duration) bool {
 			return true
 		}
 	}
-	return false
+	// No existing waiter, timer has already fired or been reset.
+	// We should still enable Reset() to succeed by creating a
+	// new waiter and adding it to the clock's waiters.
+	newWaiter := fakeClockWaiter{
+		targetTime: f.fakeClock.time.Add(d),
+		destChan:   seekChan,
+	}
+	f.fakeClock.waiters = append(f.fakeClock.waiters, newWaiter)
+	return true
 }
 
 // Ticker defines the Ticker interface

vendor/k8s.io/apimachinery/pkg/util/errors/errors.go

@@ -163,7 +163,7 @@ func matchesError(err error, fns ...Matcher) bool {
 
 // filterErrors returns any errors (or nested errors, if the list contains
 // nested Errors) for which all fns return false. If no errors
-// remain a nil list is returned. The resulting silec will have all
+// remain a nil list is returned. The resulting slice will have all
 // nested slices flattened as a side effect.
 func filterErrors(list []error, fns ...Matcher) []error {
 	result := []error{}

vendor/k8s.io/apimachinery/pkg/util/framer/framer.go

@@ -132,12 +132,14 @@ func (r *jsonFrameReader) Read(data []byte) (int, error) {
 	// Return whatever remaining data exists from an in progress frame
 	if n := len(r.remaining); n > 0 {
 		if n <= len(data) {
+			//lint:ignore SA4006,SA4010 underlying array of data is modified here.
 			data = append(data[0:0], r.remaining...)
 			r.remaining = nil
 			return n, nil
 		}
 
 		n = len(data)
+		//lint:ignore SA4006,SA4010 underlying array of data is modified here.
 		data = append(data[0:0], r.remaining[:n]...)
 		r.remaining = r.remaining[n:]
 		return n, io.ErrShortBuffer
@@ -155,6 +157,7 @@ func (r *jsonFrameReader) Read(data []byte) (int, error) {
 	// and set m to it, which means we need to copy the partial result back into data and preserve
 	// the remaining result for subsequent reads.
 	if len(m) > n {
+		//lint:ignore SA4006,SA4010 underlying array of data is modified here.
 		data = append(data[0:0], m[:n]...)
 		r.remaining = m[n:]
 		return n, io.ErrShortBuffer

vendor/k8s.io/apimachinery/pkg/util/intstr/generated.proto

@@ -17,7 +17,7 @@ limitations under the License.
 
 // This file was autogenerated by go-to-protobuf. Do not edit it manually!
 
-syntax = 'proto2';
+syntax = "proto2";
 
 package k8s.io.apimachinery.pkg.util.intstr;
 

vendor/k8s.io/apimachinery/pkg/util/intstr/instr_fuzz.go

@@ -0,0 +1,42 @@
+// +build !notest
+
+/*
+Copyright 2020 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 intstr
+
+import (
+	fuzz "github.com/google/gofuzz"
+)
+
+// Fuzz satisfies fuzz.Interface
+func (intstr *IntOrString) Fuzz(c fuzz.Continue) {
+	if intstr == nil {
+		return
+	}
+	if c.RandBool() {
+		intstr.Type = Int
+		c.Fuzz(&intstr.IntVal)
+		intstr.StrVal = ""
+	} else {
+		intstr.Type = String
+		intstr.IntVal = 0
+		c.Fuzz(&intstr.StrVal)
+	}
+}
+
+// ensure IntOrString implements fuzz.Interface
+var _ fuzz.Interface = &IntOrString{}

vendor/k8s.io/apimachinery/pkg/util/intstr/intstr.go

@@ -25,7 +25,6 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/google/gofuzz"
 	"k8s.io/klog/v2"
 )
 
@@ -90,6 +89,9 @@ func (intstr *IntOrString) UnmarshalJSON(value []byte) error {
 
 // String returns the string value, or the Itoa of the int value.
 func (intstr *IntOrString) String() string {
+	if intstr == nil {
+		return "<nil>"
+	}
 	if intstr.Type == String {
 		return intstr.StrVal
 	}
@@ -129,21 +131,6 @@ func (IntOrString) OpenAPISchemaType() []string { return []string{"string"} }
 // the OpenAPI spec of this type.
 func (IntOrString) OpenAPISchemaFormat() string { return "int-or-string" }
 
-func (intstr *IntOrString) Fuzz(c fuzz.Continue) {
-	if intstr == nil {
-		return
-	}
-	if c.RandBool() {
-		intstr.Type = Int
-		c.Fuzz(&intstr.IntVal)
-		intstr.StrVal = ""
-	} else {
-		intstr.Type = String
-		intstr.IntVal = 0
-		c.Fuzz(&intstr.StrVal)
-	}
-}
-
 func ValueOrDefault(intOrPercent *IntOrString, defaultValue IntOrString) *IntOrString {
 	if intOrPercent == nil {
 		return &defaultValue
@@ -151,6 +138,33 @@ func ValueOrDefault(intOrPercent *IntOrString, defaultValue IntOrString) *IntOrS
 	return intOrPercent
 }
 
+// GetScaledValueFromIntOrPercent is meant to replace GetValueFromIntOrPercent.
+// This method returns a scaled value from an IntOrString type. If the IntOrString
+// is a percentage string value it's treated as a percentage and scaled appropriately
+// in accordance to the total, if it's an int value it's treated as a a simple value and
+// if it is a string value which is either non-numeric or numeric but lacking a trailing '%' it returns an error.
+func GetScaledValueFromIntOrPercent(intOrPercent *IntOrString, total int, roundUp bool) (int, error) {
+	if intOrPercent == nil {
+		return 0, errors.New("nil value for IntOrString")
+	}
+	value, isPercent, err := getIntOrPercentValueSafely(intOrPercent)
+	if err != nil {
+		return 0, fmt.Errorf("invalid value for IntOrString: %v", err)
+	}
+	if isPercent {
+		if roundUp {
+			value = int(math.Ceil(float64(value) * (float64(total)) / 100))
+		} else {
+			value = int(math.Floor(float64(value) * (float64(total)) / 100))
+		}
+	}
+	return value, nil
+}
+
+// GetValueFromIntOrPercent was deprecated in favor of
+// GetScaledValueFromIntOrPercent. This method was treating all int as a numeric value and all
+// strings with or without a percent symbol as a percentage value.
+// Deprecated
 func GetValueFromIntOrPercent(intOrPercent *IntOrString, total int, roundUp bool) (int, error) {
 	if intOrPercent == nil {
 		return 0, errors.New("nil value for IntOrString")
@@ -169,6 +183,8 @@ func GetValueFromIntOrPercent(intOrPercent *IntOrString, total int, roundUp bool
 	return value, nil
 }
 
+// getIntOrPercentValue is a legacy function and only meant to be called by GetValueFromIntOrPercent
+// For a more correct implementation call getIntOrPercentSafely
 func getIntOrPercentValue(intOrStr *IntOrString) (int, bool, error) {
 	switch intOrStr.Type {
 	case Int:
@@ -183,3 +199,25 @@ func getIntOrPercentValue(intOrStr *IntOrString) (int, bool, error) {
 	}
 	return 0, false, fmt.Errorf("invalid type: neither int nor percentage")
 }
+
+func getIntOrPercentValueSafely(intOrStr *IntOrString) (int, bool, error) {
+	switch intOrStr.Type {
+	case Int:
+		return intOrStr.IntValue(), false, nil
+	case String:
+		isPercent := false
+		s := intOrStr.StrVal
+		if strings.HasSuffix(s, "%") {
+			isPercent = true
+			s = strings.TrimSuffix(intOrStr.StrVal, "%")
+		} else {
+			return 0, false, fmt.Errorf("invalid type: string is not a percentage")
+		}
+		v, err := strconv.Atoi(s)
+		if err != nil {
+			return 0, false, fmt.Errorf("invalid value %q: %v", intOrStr.StrVal, err)
+		}
+		return int(v), isPercent, nil
+	}
+	return 0, false, fmt.Errorf("invalid type: neither int nor percentage")
+}

vendor/k8s.io/apimachinery/pkg/util/json/json.go

@@ -39,7 +39,8 @@ func Marshal(v interface{}) ([]byte, error) {
 const maxDepth = 10000
 
 // Unmarshal unmarshals the given data
-// If v is a *map[string]interface{}, numbers are converted to int64 or float64
+// If v is a *map[string]interface{}, *[]interface{}, or *interface{} numbers
+// are converted to int64 or float64
 func Unmarshal(data []byte, v interface{}) error {
 	switch v := v.(type) {
 	case *map[string]interface{}:
@@ -52,7 +53,7 @@ func Unmarshal(data []byte, v interface{}) error {
 			return err
 		}
 		// If the decode succeeds, post-process the map to convert json.Number objects to int64 or float64
-		return convertMapNumbers(*v, 0)
+		return ConvertMapNumbers(*v, 0)
 
 	case *[]interface{}:
 		// Build a decoder from the given data
@@ -64,7 +65,7 @@ func Unmarshal(data []byte, v interface{}) error {
 			return err
 		}
 		// If the decode succeeds, post-process the map to convert json.Number objects to int64 or float64
-		return convertSliceNumbers(*v, 0)
+		return ConvertSliceNumbers(*v, 0)
 
 	case *interface{}:
 		// Build a decoder from the given data
@@ -76,29 +77,31 @@ func Unmarshal(data []byte, v interface{}) error {
 			return err
 		}
 		// If the decode succeeds, post-process the map to convert json.Number objects to int64 or float64
-		return convertInterfaceNumbers(v, 0)
+		return ConvertInterfaceNumbers(v, 0)
 
 	default:
 		return json.Unmarshal(data, v)
 	}
 }
 
-func convertInterfaceNumbers(v *interface{}, depth int) error {
+// ConvertInterfaceNumbers converts any json.Number values to int64 or float64.
+// Values which are map[string]interface{} or []interface{} are recursively visited
+func ConvertInterfaceNumbers(v *interface{}, depth int) error {
 	var err error
 	switch v2 := (*v).(type) {
 	case json.Number:
 		*v, err = convertNumber(v2)
 	case map[string]interface{}:
-		err = convertMapNumbers(v2, depth+1)
+		err = ConvertMapNumbers(v2, depth+1)
 	case []interface{}:
-		err = convertSliceNumbers(v2, depth+1)
+		err = ConvertSliceNumbers(v2, depth+1)
 	}
 	return err
 }
 
-// convertMapNumbers traverses the map, converting any json.Number values to int64 or float64.
+// ConvertMapNumbers traverses the map, converting any json.Number values to int64 or float64.
 // values which are map[string]interface{} or []interface{} are recursively visited
-func convertMapNumbers(m map[string]interface{}, depth int) error {
+func ConvertMapNumbers(m map[string]interface{}, depth int) error {
 	if depth > maxDepth {
 		return fmt.Errorf("exceeded max depth of %d", maxDepth)
 	}
@@ -109,9 +112,9 @@ func convertMapNumbers(m map[string]interface{}, depth int) error {
 		case json.Number:
 			m[k], err = convertNumber(v)
 		case map[string]interface{}:
-			err = convertMapNumbers(v, depth+1)
+			err = ConvertMapNumbers(v, depth+1)
 		case []interface{}:
-			err = convertSliceNumbers(v, depth+1)
+			err = ConvertSliceNumbers(v, depth+1)
 		}
 		if err != nil {
 			return err
@@ -120,9 +123,9 @@ func convertMapNumbers(m map[string]interface{}, depth int) error {
 	return nil
 }
 
-// convertSliceNumbers traverses the slice, converting any json.Number values to int64 or float64.
+// ConvertSliceNumbers traverses the slice, converting any json.Number values to int64 or float64.
 // values which are map[string]interface{} or []interface{} are recursively visited
-func convertSliceNumbers(s []interface{}, depth int) error {
+func ConvertSliceNumbers(s []interface{}, depth int) error {
 	if depth > maxDepth {
 		return fmt.Errorf("exceeded max depth of %d", maxDepth)
 	}
@@ -133,9 +136,9 @@ func convertSliceNumbers(s []interface{}, depth int) error {
 		case json.Number:
 			s[i], err = convertNumber(v)
 		case map[string]interface{}:
-			err = convertMapNumbers(v, depth+1)
+			err = ConvertMapNumbers(v, depth+1)
 		case []interface{}:
-			err = convertSliceNumbers(v, depth+1)
+			err = ConvertSliceNumbers(v, depth+1)
 		}
 		if err != nil {
 			return err

vendor/k8s.io/apimachinery/pkg/util/net/http.go

@@ -33,6 +33,7 @@ import (
 	"regexp"
 	"strconv"
 	"strings"
+	"time"
 	"unicode"
 	"unicode/utf8"
 
@@ -132,13 +133,61 @@ func SetTransportDefaults(t *http.Transport) *http.Transport {
 	if s := os.Getenv("DISABLE_HTTP2"); len(s) > 0 {
 		klog.Infof("HTTP2 has been explicitly disabled")
 	} else if allowsHTTP2(t) {
-		if err := http2.ConfigureTransport(t); err != nil {
+		if err := configureHTTP2Transport(t); err != nil {
 			klog.Warningf("Transport failed http2 configuration: %v", err)
 		}
 	}
 	return t
 }
 
+func readIdleTimeoutSeconds() int {
+	ret := 30
+	// User can set the readIdleTimeout to 0 to disable the HTTP/2
+	// connection health check.
+	if s := os.Getenv("HTTP2_READ_IDLE_TIMEOUT_SECONDS"); len(s) > 0 {
+		i, err := strconv.Atoi(s)
+		if err != nil {
+			klog.Warningf("Illegal HTTP2_READ_IDLE_TIMEOUT_SECONDS(%q): %v."+
+				" Default value %d is used", s, err, ret)
+			return ret
+		}
+		ret = i
+	}
+	return ret
+}
+
+func pingTimeoutSeconds() int {
+	ret := 15
+	if s := os.Getenv("HTTP2_PING_TIMEOUT_SECONDS"); len(s) > 0 {
+		i, err := strconv.Atoi(s)
+		if err != nil {
+			klog.Warningf("Illegal HTTP2_PING_TIMEOUT_SECONDS(%q): %v."+
+				" Default value %d is used", s, err, ret)
+			return ret
+		}
+		ret = i
+	}
+	return ret
+}
+
+func configureHTTP2Transport(t *http.Transport) error {
+	t2, err := http2.ConfigureTransports(t)
+	if err != nil {
+		return err
+	}
+	// The following enables the HTTP/2 connection health check added in
+	// https://github.com/golang/net/pull/55. The health check detects and
+	// closes broken transport layer connections. Without the health check,
+	// a broken connection can linger too long, e.g., a broken TCP
+	// connection will be closed by the Linux kernel after 13 to 30 minutes
+	// by default, which caused
+	// https://github.com/kubernetes/client-go/issues/374 and
+	// https://github.com/kubernetes/kubernetes/issues/87615.
+	t2.ReadIdleTimeout = time.Duration(readIdleTimeoutSeconds()) * time.Second
+	t2.PingTimeout = time.Duration(pingTimeoutSeconds()) * time.Second
+	return nil
+}
+
 func allowsHTTP2(t *http.Transport) bool {
 	if t.TLSClientConfig == nil || len(t.TLSClientConfig.NextProtos) == 0 {
 		// the transport expressed no NextProto preference, allow

vendor/k8s.io/apimachinery/pkg/util/net/port_range.go

@@ -130,7 +130,7 @@ func (*PortRange) Type() string {
 }
 
 // ParsePortRange parses a string of the form "min-max", inclusive at both
-// ends, and initializs a new PortRange from it.
+// ends, and initializes a new PortRange from it.
 func ParsePortRange(value string) (*PortRange, error) {
 	pr := &PortRange{}
 	err := pr.Set(value)

vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go

@@ -79,7 +79,7 @@ func logPanic(r interface{}) {
 	}
 }
 
-// ErrorHandlers is a list of functions which will be invoked when an unreturnable
+// ErrorHandlers is a list of functions which will be invoked when a nonreturnable
 // error occurs.
 // TODO(lavalamp): for testability, this and the below HandleError function
 // should be packaged up into a testable and reusable object.
@@ -165,7 +165,7 @@ func RecoverFromPanic(err *error) {
 	}
 }
 
-// Must panics on non-nil errors.  Useful to handling programmer level errors.
+// Must panics on non-nil errors. Useful to handling programmer level errors.
 func Must(err error) {
 	if err != nil {
 		panic(err)

vendor/k8s.io/apimachinery/pkg/util/validation/field/path.go

@@ -67,6 +67,9 @@ func (p *Path) Key(key string) *Path {
 
 // String produces a string representation of the Path.
 func (p *Path) String() string {
+	if p == nil {
+		return "<nil>"
+	}
 	// make a slice to iterate
 	elems := []*Path{}
 	for ; p != nil; p = p.parent {

vendor/k8s.io/apimachinery/pkg/util/validation/validation.go

@@ -175,7 +175,7 @@ func IsValidLabelValue(value string) []string {
 }
 
 const dns1123LabelFmt string = "[a-z0-9]([-a-z0-9]*[a-z0-9])?"
-const dns1123LabelErrMsg string = "a DNS-1123 label must consist of lower case alphanumeric characters or '-', and must start and end with an alphanumeric character"
+const dns1123LabelErrMsg string = "a lowercase RFC 1123 label must consist of lower case alphanumeric characters or '-', and must start and end with an alphanumeric character"
 
 // DNS1123LabelMaxLength is a label's max length in DNS (RFC 1123)
 const DNS1123LabelMaxLength int = 63
@@ -196,7 +196,7 @@ func IsDNS1123Label(value string) []string {
 }
 
 const dns1123SubdomainFmt string = dns1123LabelFmt + "(\\." + dns1123LabelFmt + ")*"
-const dns1123SubdomainErrorMsg string = "a DNS-1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character"
+const dns1123SubdomainErrorMsg string = "a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character"
 
 // DNS1123SubdomainMaxLength is a subdomain's max length in DNS (RFC 1123)
 const DNS1123SubdomainMaxLength int = 253
@@ -347,7 +347,7 @@ func IsValidPortName(port string) []string {
 // IsValidIP tests that the argument is a valid IP address.
 func IsValidIP(value string) []string {
 	if net.ParseIP(value) == nil {
-		return []string{"must be a valid IP address, (e.g. 10.9.8.7)"}
+		return []string{"must be a valid IP address, (e.g. 10.9.8.7 or 2001:db8::ffff)"}
 	}
 	return nil
 }

vendor/k8s.io/apimachinery/pkg/util/wait/wait.go

@@ -604,3 +604,32 @@ func poller(interval, timeout time.Duration) WaitFunc {
 		return ch
 	})
 }
+
+// ExponentialBackoffWithContext works with a request context and a Backoff. It ensures that the retry wait never
+// exceeds the deadline specified by the request context.
+func ExponentialBackoffWithContext(ctx context.Context, backoff Backoff, condition ConditionFunc) error {
+	for backoff.Steps > 0 {
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		default:
+		}
+
+		if ok, err := runConditionWithCrashProtection(condition); err != nil || ok {
+			return err
+		}
+
+		if backoff.Steps == 1 {
+			break
+		}
+
+		waitBeforeRetry := backoff.Step()
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		case <-time.After(waitBeforeRetry):
+		}
+	}
+
+	return ErrWaitTimeout
+}

vendor/k8s.io/apimachinery/pkg/util/yaml/decoder.go

@@ -26,10 +26,41 @@ import (
 	"strings"
 	"unicode"
 
+	jsonutil "k8s.io/apimachinery/pkg/util/json"
+
 	"k8s.io/klog/v2"
 	"sigs.k8s.io/yaml"
 )
 
+// Unmarshal unmarshals the given data
+// If v is a *map[string]interface{}, *[]interface{}, or *interface{} numbers
+// are converted to int64 or float64
+func Unmarshal(data []byte, v interface{}) error {
+	preserveIntFloat := func(d *json.Decoder) *json.Decoder {
+		d.UseNumber()
+		return d
+	}
+	switch v := v.(type) {
+	case *map[string]interface{}:
+		if err := yaml.Unmarshal(data, v, preserveIntFloat); err != nil {
+			return err
+		}
+		return jsonutil.ConvertMapNumbers(*v, 0)
+	case *[]interface{}:
+		if err := yaml.Unmarshal(data, v, preserveIntFloat); err != nil {
+			return err
+		}
+		return jsonutil.ConvertSliceNumbers(*v, 0)
+	case *interface{}:
+		if err := yaml.Unmarshal(data, v, preserveIntFloat); err != nil {
+			return err
+		}
+		return jsonutil.ConvertInterfaceNumbers(v, 0)
+	default:
+		return yaml.Unmarshal(data, v)
+	}
+}
+
 // ToJSON converts a single YAML document into a JSON document
 // or returns an error. If the document appears to be JSON the
 // YAML decoding path is not used (so that error messages are