代码拉取完成,页面将自动刷新
/*
Copyright 2014 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 helper
import (
"crypto/md5"
"encoding/json"
"fmt"
"strings"
"time"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/conversion"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/selection"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/client-go/pkg/api"
)
// NonConvertibleFields iterates over the provided map and filters out all but
// any keys with the "non-convertible.kubernetes.io" prefix.
func NonConvertibleFields(annotations map[string]string) map[string]string {
nonConvertibleKeys := map[string]string{}
for key, value := range annotations {
if strings.HasPrefix(key, api.NonConvertibleAnnotationPrefix) {
nonConvertibleKeys[key] = value
}
}
return nonConvertibleKeys
}
// Semantic can do semantic deep equality checks for api objects.
// Example: apiequality.Semantic.DeepEqual(aPod, aPodWithNonNilButEmptyMaps) == true
var Semantic = conversion.EqualitiesOrDie(
func(a, b resource.Quantity) bool {
// Ignore formatting, only care that numeric value stayed the same.
// TODO: if we decide it's important, it should be safe to start comparing the format.
//
// Uninitialized quantities are equivalent to 0 quantities.
return a.Cmp(b) == 0
},
func(a, b metav1.Time) bool {
return a.UTC() == b.UTC()
},
func(a, b labels.Selector) bool {
return a.String() == b.String()
},
func(a, b fields.Selector) bool {
return a.String() == b.String()
},
)
var standardResourceQuotaScopes = sets.NewString(
string(api.ResourceQuotaScopeTerminating),
string(api.ResourceQuotaScopeNotTerminating),
string(api.ResourceQuotaScopeBestEffort),
string(api.ResourceQuotaScopeNotBestEffort),
)
// IsStandardResourceQuotaScope returns true if the scope is a standard value
func IsStandardResourceQuotaScope(str string) bool {
return standardResourceQuotaScopes.Has(str)
}
var podObjectCountQuotaResources = sets.NewString(
string(api.ResourcePods),
)
var podComputeQuotaResources = sets.NewString(
string(api.ResourceCPU),
string(api.ResourceMemory),
string(api.ResourceLimitsCPU),
string(api.ResourceLimitsMemory),
string(api.ResourceRequestsCPU),
string(api.ResourceRequestsMemory),
)
// IsResourceQuotaScopeValidForResource returns true if the resource applies to the specified scope
func IsResourceQuotaScopeValidForResource(scope api.ResourceQuotaScope, resource string) bool {
switch scope {
case api.ResourceQuotaScopeTerminating, api.ResourceQuotaScopeNotTerminating, api.ResourceQuotaScopeNotBestEffort:
return podObjectCountQuotaResources.Has(resource) || podComputeQuotaResources.Has(resource)
case api.ResourceQuotaScopeBestEffort:
return podObjectCountQuotaResources.Has(resource)
default:
return true
}
}
var standardContainerResources = sets.NewString(
string(api.ResourceCPU),
string(api.ResourceMemory),
)
// IsStandardContainerResourceName returns true if the container can make a resource request
// for the specified resource
func IsStandardContainerResourceName(str string) bool {
return standardContainerResources.Has(str)
}
// IsOpaqueIntResourceName returns true if the resource name has the opaque
// integer resource prefix.
func IsOpaqueIntResourceName(name api.ResourceName) bool {
return strings.HasPrefix(string(name), api.ResourceOpaqueIntPrefix)
}
// OpaqueIntResourceName returns a ResourceName with the canonical opaque
// integer prefix prepended. If the argument already has the prefix, it is
// returned unmodified.
func OpaqueIntResourceName(name string) api.ResourceName {
if IsOpaqueIntResourceName(api.ResourceName(name)) {
return api.ResourceName(name)
}
return api.ResourceName(fmt.Sprintf("%s%s", api.ResourceOpaqueIntPrefix, name))
}
var standardLimitRangeTypes = sets.NewString(
string(api.LimitTypePod),
string(api.LimitTypeContainer),
string(api.LimitTypePersistentVolumeClaim),
)
// IsStandardLimitRangeType returns true if the type is Pod or Container
func IsStandardLimitRangeType(str string) bool {
return standardLimitRangeTypes.Has(str)
}
var standardQuotaResources = sets.NewString(
string(api.ResourceCPU),
string(api.ResourceMemory),
string(api.ResourceRequestsCPU),
string(api.ResourceRequestsMemory),
string(api.ResourceRequestsStorage),
string(api.ResourceLimitsCPU),
string(api.ResourceLimitsMemory),
string(api.ResourcePods),
string(api.ResourceQuotas),
string(api.ResourceServices),
string(api.ResourceReplicationControllers),
string(api.ResourceSecrets),
string(api.ResourcePersistentVolumeClaims),
string(api.ResourceConfigMaps),
string(api.ResourceServicesNodePorts),
string(api.ResourceServicesLoadBalancers),
)
// IsStandardQuotaResourceName returns true if the resource is known to
// the quota tracking system
func IsStandardQuotaResourceName(str string) bool {
return standardQuotaResources.Has(str)
}
var standardResources = sets.NewString(
string(api.ResourceCPU),
string(api.ResourceMemory),
string(api.ResourceRequestsCPU),
string(api.ResourceRequestsMemory),
string(api.ResourceLimitsCPU),
string(api.ResourceLimitsMemory),
string(api.ResourcePods),
string(api.ResourceQuotas),
string(api.ResourceServices),
string(api.ResourceReplicationControllers),
string(api.ResourceSecrets),
string(api.ResourceConfigMaps),
string(api.ResourcePersistentVolumeClaims),
string(api.ResourceStorage),
string(api.ResourceRequestsStorage),
)
// IsStandardResourceName returns true if the resource is known to the system
func IsStandardResourceName(str string) bool {
return standardResources.Has(str)
}
var integerResources = sets.NewString(
string(api.ResourcePods),
string(api.ResourceQuotas),
string(api.ResourceServices),
string(api.ResourceReplicationControllers),
string(api.ResourceSecrets),
string(api.ResourceConfigMaps),
string(api.ResourcePersistentVolumeClaims),
string(api.ResourceServicesNodePorts),
string(api.ResourceServicesLoadBalancers),
)
// IsIntegerResourceName returns true if the resource is measured in integer values
func IsIntegerResourceName(str string) bool {
return integerResources.Has(str) || IsOpaqueIntResourceName(api.ResourceName(str))
}
// this function aims to check if the service's ClusterIP is set or not
// the objective is not to perform validation here
func IsServiceIPSet(service *api.Service) bool {
return service.Spec.ClusterIP != api.ClusterIPNone && service.Spec.ClusterIP != ""
}
// this function aims to check if the service's cluster IP is requested or not
func IsServiceIPRequested(service *api.Service) bool {
// ExternalName services are CNAME aliases to external ones. Ignore the IP.
if service.Spec.Type == api.ServiceTypeExternalName {
return false
}
return service.Spec.ClusterIP == ""
}
var standardFinalizers = sets.NewString(
string(api.FinalizerKubernetes),
metav1.FinalizerOrphanDependents,
)
// HasAnnotation returns a bool if passed in annotation exists
func HasAnnotation(obj api.ObjectMeta, ann string) bool {
_, found := obj.Annotations[ann]
return found
}
// SetMetaDataAnnotation sets the annotation and value
func SetMetaDataAnnotation(obj *api.ObjectMeta, ann string, value string) {
if obj.Annotations == nil {
obj.Annotations = make(map[string]string)
}
obj.Annotations[ann] = value
}
func IsStandardFinalizerName(str string) bool {
return standardFinalizers.Has(str)
}
// AddToNodeAddresses appends the NodeAddresses to the passed-by-pointer slice,
// only if they do not already exist
func AddToNodeAddresses(addresses *[]api.NodeAddress, addAddresses ...api.NodeAddress) {
for _, add := range addAddresses {
exists := false
for _, existing := range *addresses {
if existing.Address == add.Address && existing.Type == add.Type {
exists = true
break
}
}
if !exists {
*addresses = append(*addresses, add)
}
}
}
func HashObject(obj runtime.Object, codec runtime.Codec) (string, error) {
data, err := runtime.Encode(codec, obj)
if err != nil {
return "", err
}
return fmt.Sprintf("%x", md5.Sum(data)), nil
}
// TODO: make method on LoadBalancerStatus?
func LoadBalancerStatusEqual(l, r *api.LoadBalancerStatus) bool {
return ingressSliceEqual(l.Ingress, r.Ingress)
}
func ingressSliceEqual(lhs, rhs []api.LoadBalancerIngress) bool {
if len(lhs) != len(rhs) {
return false
}
for i := range lhs {
if !ingressEqual(&lhs[i], &rhs[i]) {
return false
}
}
return true
}
func ingressEqual(lhs, rhs *api.LoadBalancerIngress) bool {
if lhs.IP != rhs.IP {
return false
}
if lhs.Hostname != rhs.Hostname {
return false
}
return true
}
// TODO: make method on LoadBalancerStatus?
func LoadBalancerStatusDeepCopy(lb *api.LoadBalancerStatus) *api.LoadBalancerStatus {
c := &api.LoadBalancerStatus{}
c.Ingress = make([]api.LoadBalancerIngress, len(lb.Ingress))
for i := range lb.Ingress {
c.Ingress[i] = lb.Ingress[i]
}
return c
}
// GetAccessModesAsString returns a string representation of an array of access modes.
// modes, when present, are always in the same order: RWO,ROX,RWX.
func GetAccessModesAsString(modes []api.PersistentVolumeAccessMode) string {
modes = removeDuplicateAccessModes(modes)
modesStr := []string{}
if containsAccessMode(modes, api.ReadWriteOnce) {
modesStr = append(modesStr, "RWO")
}
if containsAccessMode(modes, api.ReadOnlyMany) {
modesStr = append(modesStr, "ROX")
}
if containsAccessMode(modes, api.ReadWriteMany) {
modesStr = append(modesStr, "RWX")
}
return strings.Join(modesStr, ",")
}
// GetAccessModesAsString returns an array of AccessModes from a string created by GetAccessModesAsString
func GetAccessModesFromString(modes string) []api.PersistentVolumeAccessMode {
strmodes := strings.Split(modes, ",")
accessModes := []api.PersistentVolumeAccessMode{}
for _, s := range strmodes {
s = strings.Trim(s, " ")
switch {
case s == "RWO":
accessModes = append(accessModes, api.ReadWriteOnce)
case s == "ROX":
accessModes = append(accessModes, api.ReadOnlyMany)
case s == "RWX":
accessModes = append(accessModes, api.ReadWriteMany)
}
}
return accessModes
}
// removeDuplicateAccessModes returns an array of access modes without any duplicates
func removeDuplicateAccessModes(modes []api.PersistentVolumeAccessMode) []api.PersistentVolumeAccessMode {
accessModes := []api.PersistentVolumeAccessMode{}
for _, m := range modes {
if !containsAccessMode(accessModes, m) {
accessModes = append(accessModes, m)
}
}
return accessModes
}
func containsAccessMode(modes []api.PersistentVolumeAccessMode, mode api.PersistentVolumeAccessMode) bool {
for _, m := range modes {
if m == mode {
return true
}
}
return false
}
// ParseRFC3339 parses an RFC3339 date in either RFC3339Nano or RFC3339 format.
func ParseRFC3339(s string, nowFn func() metav1.Time) (metav1.Time, error) {
if t, timeErr := time.Parse(time.RFC3339Nano, s); timeErr == nil {
return metav1.Time{Time: t}, nil
}
t, err := time.Parse(time.RFC3339, s)
if err != nil {
return metav1.Time{}, err
}
return metav1.Time{Time: t}, nil
}
// NodeSelectorRequirementsAsSelector converts the []NodeSelectorRequirement api type into a struct that implements
// labels.Selector.
func NodeSelectorRequirementsAsSelector(nsm []api.NodeSelectorRequirement) (labels.Selector, error) {
if len(nsm) == 0 {
return labels.Nothing(), nil
}
selector := labels.NewSelector()
for _, expr := range nsm {
var op selection.Operator
switch expr.Operator {
case api.NodeSelectorOpIn:
op = selection.In
case api.NodeSelectorOpNotIn:
op = selection.NotIn
case api.NodeSelectorOpExists:
op = selection.Exists
case api.NodeSelectorOpDoesNotExist:
op = selection.DoesNotExist
case api.NodeSelectorOpGt:
op = selection.GreaterThan
case api.NodeSelectorOpLt:
op = selection.LessThan
default:
return nil, fmt.Errorf("%q is not a valid node selector operator", expr.Operator)
}
r, err := labels.NewRequirement(expr.Key, op, expr.Values)
if err != nil {
return nil, err
}
selector = selector.Add(*r)
}
return selector, nil
}
// GetTolerationsFromPodAnnotations gets the json serialized tolerations data from Pod.Annotations
// and converts it to the []Toleration type in api.
func GetTolerationsFromPodAnnotations(annotations map[string]string) ([]api.Toleration, error) {
var tolerations []api.Toleration
if len(annotations) > 0 && annotations[api.TolerationsAnnotationKey] != "" {
err := json.Unmarshal([]byte(annotations[api.TolerationsAnnotationKey]), &tolerations)
if err != nil {
return tolerations, err
}
}
return tolerations, nil
}
// AddOrUpdateTolerationInPod tries to add a toleration to the pod's toleration list.
// Returns true if something was updated, false otherwise.
func AddOrUpdateTolerationInPod(pod *api.Pod, toleration *api.Toleration) bool {
podTolerations := pod.Spec.Tolerations
var newTolerations []api.Toleration
updated := false
for i := range podTolerations {
if toleration.MatchToleration(&podTolerations[i]) {
if Semantic.DeepEqual(toleration, podTolerations[i]) {
return false
}
newTolerations = append(newTolerations, *toleration)
updated = true
continue
}
newTolerations = append(newTolerations, podTolerations[i])
}
if !updated {
newTolerations = append(newTolerations, *toleration)
}
pod.Spec.Tolerations = newTolerations
return true
}
// TolerationToleratesTaint checks if the toleration tolerates the taint.
func TolerationToleratesTaint(toleration *api.Toleration, taint *api.Taint) bool {
if len(toleration.Effect) != 0 && toleration.Effect != taint.Effect {
return false
}
if toleration.Key != taint.Key {
return false
}
// TODO: Use proper defaulting when Toleration becomes a field of PodSpec
if (len(toleration.Operator) == 0 || toleration.Operator == api.TolerationOpEqual) && toleration.Value == taint.Value {
return true
}
if toleration.Operator == api.TolerationOpExists {
return true
}
return false
}
// TaintToleratedByTolerations checks if taint is tolerated by any of the tolerations.
func TaintToleratedByTolerations(taint *api.Taint, tolerations []api.Toleration) bool {
tolerated := false
for i := range tolerations {
if TolerationToleratesTaint(&tolerations[i], taint) {
tolerated = true
break
}
}
return tolerated
}
// GetTaintsFromNodeAnnotations gets the json serialized taints data from Pod.Annotations
// and converts it to the []Taint type in api.
func GetTaintsFromNodeAnnotations(annotations map[string]string) ([]api.Taint, error) {
var taints []api.Taint
if len(annotations) > 0 && annotations[api.TaintsAnnotationKey] != "" {
err := json.Unmarshal([]byte(annotations[api.TaintsAnnotationKey]), &taints)
if err != nil {
return []api.Taint{}, err
}
}
return taints, nil
}
// SysctlsFromPodAnnotations parses the sysctl annotations into a slice of safe Sysctls
// and a slice of unsafe Sysctls. This is only a convenience wrapper around
// SysctlsFromPodAnnotation.
func SysctlsFromPodAnnotations(a map[string]string) ([]api.Sysctl, []api.Sysctl, error) {
safe, err := SysctlsFromPodAnnotation(a[api.SysctlsPodAnnotationKey])
if err != nil {
return nil, nil, err
}
unsafe, err := SysctlsFromPodAnnotation(a[api.UnsafeSysctlsPodAnnotationKey])
if err != nil {
return nil, nil, err
}
return safe, unsafe, nil
}
// SysctlsFromPodAnnotation parses an annotation value into a slice of Sysctls.
func SysctlsFromPodAnnotation(annotation string) ([]api.Sysctl, error) {
if len(annotation) == 0 {
return nil, nil
}
kvs := strings.Split(annotation, ",")
sysctls := make([]api.Sysctl, len(kvs))
for i, kv := range kvs {
cs := strings.Split(kv, "=")
if len(cs) != 2 || len(cs[0]) == 0 {
return nil, fmt.Errorf("sysctl %q not of the format sysctl_name=value", kv)
}
sysctls[i].Name = cs[0]
sysctls[i].Value = cs[1]
}
return sysctls, nil
}
// PodAnnotationsFromSysctls creates an annotation value for a slice of Sysctls.
func PodAnnotationsFromSysctls(sysctls []api.Sysctl) string {
if len(sysctls) == 0 {
return ""
}
kvs := make([]string, len(sysctls))
for i := range sysctls {
kvs[i] = fmt.Sprintf("%s=%s", sysctls[i].Name, sysctls[i].Value)
}
return strings.Join(kvs, ",")
}
// GetAffinityFromPodAnnotations gets the json serialized affinity data from Pod.Annotations
// and converts it to the Affinity type in api.
// TODO: remove when alpha support for affinity is removed
func GetAffinityFromPodAnnotations(annotations map[string]string) (*api.Affinity, error) {
if len(annotations) > 0 && annotations[api.AffinityAnnotationKey] != "" {
var affinity api.Affinity
err := json.Unmarshal([]byte(annotations[api.AffinityAnnotationKey]), &affinity)
if err != nil {
return nil, err
}
return &affinity, nil
}
return nil, nil
}
// GetPersistentVolumeClass returns StorageClassName.
func GetPersistentVolumeClass(volume *api.PersistentVolume) string {
// Use beta annotation first
if class, found := volume.Annotations[api.BetaStorageClassAnnotation]; found {
return class
}
return volume.Spec.StorageClassName
}
// GetPersistentVolumeClaimClass returns StorageClassName. If no storage class was
// requested, it returns "".
func GetPersistentVolumeClaimClass(claim *api.PersistentVolumeClaim) string {
// Use beta annotation first
if class, found := claim.Annotations[api.BetaStorageClassAnnotation]; found {
return class
}
if claim.Spec.StorageClassName != nil {
return *claim.Spec.StorageClassName
}
return ""
}
// PersistentVolumeClaimHasClass returns true if given claim has set StorageClassName field.
func PersistentVolumeClaimHasClass(claim *api.PersistentVolumeClaim) bool {
// Use beta annotation first
if _, found := claim.Annotations[api.BetaStorageClassAnnotation]; found {
return true
}
if claim.Spec.StorageClassName != nil {
return true
}
return false
}
此处可能存在不合适展示的内容,页面不予展示。您可通过相关编辑功能自查并修改。
如您确认内容无涉及 不当用语 / 纯广告导流 / 暴力 / 低俗色情 / 侵权 / 盗版 / 虚假 / 无价值内容或违法国家有关法律法规的内容,可点击提交进行申诉,我们将尽快为您处理。