Merge pull request #1395 from mrlihanbo/dependenciesInterpreter
add default dependenciesInterpreter framework
This commit is contained in:
karmada-bot
GitHub
commit
2e939ba9f3
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@ -275,3 +275,18 @@ func applyPatch(object *unstructured.Unstructured, patch []byte, patchType confi
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return nil, fmt.Errorf("return patch type %s is not support", patchType)
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}
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}
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// GetDependencies returns the dependencies of give object.
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// return matched value to indicate whether there is a matching hook.
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func (e *CustomizedInterpreter) GetDependencies(ctx context.Context, attributes *webhook.RequestAttributes) (dependencies []configv1alpha1.DependentObjectReference, matched bool, err error) {
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var response *webhook.ResponseAttributes
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response, matched, err = e.interpret(ctx, attributes)
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if err != nil {
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return
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}
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if !matched {
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return
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}
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return response.Dependencies, matched, nil
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}
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@ -18,6 +18,7 @@ type DefaultInterpreter struct {
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reviseReplicaHandlers map[schema.GroupVersionKind]reviseReplicaInterpreter
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retentionHandlers map[schema.GroupVersionKind]retentionInterpreter
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aggregateStatusHandlers map[schema.GroupVersionKind]aggregateStatusInterpreter
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dependenciesHandlers map[schema.GroupVersionKind]dependenciesInterpreter
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}
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// NewDefaultInterpreter return a new DefaultInterpreter.
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@ -27,6 +28,7 @@ func NewDefaultInterpreter() *DefaultInterpreter {
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reviseReplicaHandlers: getAllDefaultReviseReplicaInterpreter(),
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retentionHandlers: getAllDefaultRetentionInterpreter(),
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aggregateStatusHandlers: getAllDefaultAggregateStatusInterpreter(),
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dependenciesHandlers: getAllDefaultDependenciesInterpreter(),
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}
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}
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@ -49,7 +51,10 @@ func (e *DefaultInterpreter) HookEnabled(kind schema.GroupVersionKind, operation
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if _, exist := e.aggregateStatusHandlers[kind]; exist {
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return true
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}
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case configv1alpha1.InterpreterOperationInterpretDependency:
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if _, exist := e.dependenciesHandlers[kind]; exist {
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return true
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}
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// TODO(RainbowMango): more cases should be added here
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}
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@ -92,3 +97,12 @@ func (e *DefaultInterpreter) AggregateStatus(object *unstructured.Unstructured,
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}
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return handler(object, aggregatedStatusItems)
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}
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// GetDependencies returns the dependent resources of the given object.
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func (e *DefaultInterpreter) GetDependencies(object *unstructured.Unstructured) (dependencies []configv1alpha1.DependentObjectReference, err error) {
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handler, exist := e.dependenciesHandlers[object.GroupVersionKind()]
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if !exist {
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return dependencies, fmt.Errorf("defalut interpreter for operation %s not found", configv1alpha1.InterpreterOperationInterpretDependency)
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}
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return handler(object)
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}
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@ -0,0 +1,118 @@
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package defaultinterpreter
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import (
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"fmt"
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appsv1 "k8s.io/api/apps/v1"
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batchv1 "k8s.io/api/batch/v1"
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corev1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime/schema"
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configv1alpha1 "github.com/karmada-io/karmada/pkg/apis/config/v1alpha1"
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"github.com/karmada-io/karmada/pkg/util"
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"github.com/karmada-io/karmada/pkg/util/helper"
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)
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type dependenciesInterpreter func(object *unstructured.Unstructured) ([]configv1alpha1.DependentObjectReference, error)
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func getAllDefaultDependenciesInterpreter() map[schema.GroupVersionKind]dependenciesInterpreter {
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s := make(map[schema.GroupVersionKind]dependenciesInterpreter)
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s[appsv1.SchemeGroupVersion.WithKind(util.DeploymentKind)] = getDeploymentDependencies
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s[batchv1.SchemeGroupVersion.WithKind(util.JobKind)] = getJobDependencies
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s[corev1.SchemeGroupVersion.WithKind(util.PodKind)] = getPodDependencies
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s[appsv1.SchemeGroupVersion.WithKind(util.DaemonSetKind)] = getDaemonSetDependencies
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s[appsv1.SchemeGroupVersion.WithKind(util.StatefulSetKind)] = getStatefulSetDependencies
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return s
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}
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func getDeploymentDependencies(object *unstructured.Unstructured) ([]configv1alpha1.DependentObjectReference, error) {
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deploymentObj, err := helper.ConvertToDeployment(object)
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if err != nil {
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return nil, fmt.Errorf("failed to convert Deployment from unstructured object: %v", err)
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}
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podObj, err := GetPodFromTemplate(&deploymentObj.Spec.Template, deploymentObj, nil)
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if err != nil {
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return nil, err
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}
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return getDependenciesFromPodTemplate(podObj)
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}
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func getJobDependencies(object *unstructured.Unstructured) ([]configv1alpha1.DependentObjectReference, error) {
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jobObj, err := helper.ConvertToJob(object)
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if err != nil {
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return nil, fmt.Errorf("failed to convert Job from unstructured object: %v", err)
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}
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podObj, err := GetPodFromTemplate(&jobObj.Spec.Template, jobObj, nil)
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if err != nil {
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return nil, err
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}
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return getDependenciesFromPodTemplate(podObj)
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}
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func getPodDependencies(object *unstructured.Unstructured) ([]configv1alpha1.DependentObjectReference, error) {
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podObj, err := helper.ConvertToPod(object)
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if err != nil {
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return nil, fmt.Errorf("failed to convert Pod from unstructured object: %v", err)
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}
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return getDependenciesFromPodTemplate(podObj)
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}
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func getDaemonSetDependencies(object *unstructured.Unstructured) ([]configv1alpha1.DependentObjectReference, error) {
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daemonSetObj, err := helper.ConvertToDaemonSet(object)
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if err != nil {
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return nil, fmt.Errorf("failed to convert DaemonSet from unstructured object: %v", err)
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}
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podObj, err := GetPodFromTemplate(&daemonSetObj.Spec.Template, daemonSetObj, nil)
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if err != nil {
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return nil, err
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}
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return getDependenciesFromPodTemplate(podObj)
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}
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func getStatefulSetDependencies(object *unstructured.Unstructured) ([]configv1alpha1.DependentObjectReference, error) {
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statefulSetObj, err := helper.ConvertToStatefulSet(object)
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if err != nil {
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return nil, fmt.Errorf("failed to convert StatefulSet from unstructured object: %v", err)
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}
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podObj, err := GetPodFromTemplate(&statefulSetObj.Spec.Template, statefulSetObj, nil)
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if err != nil {
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return nil, err
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}
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return getDependenciesFromPodTemplate(podObj)
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}
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func getDependenciesFromPodTemplate(podObj *corev1.Pod) ([]configv1alpha1.DependentObjectReference, error) {
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dependentConfigMaps := getConfigMapNames(podObj)
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dependentSecrets := getSecretNames(podObj)
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var dependentObjectRefs []configv1alpha1.DependentObjectReference
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for cm := range dependentConfigMaps {
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dependentObjectRefs = append(dependentObjectRefs, configv1alpha1.DependentObjectReference{
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APIVersion: "v1",
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Kind: "ConfigMap",
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Namespace: podObj.Namespace,
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Name: cm,
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})
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}
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for secret := range dependentSecrets {
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dependentObjectRefs = append(dependentObjectRefs, configv1alpha1.DependentObjectReference{
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APIVersion: "v1",
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Kind: "Secret",
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Namespace: podObj.Namespace,
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Name: secret,
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})
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}
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return dependentObjectRefs, nil
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}
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@ -0,0 +1,318 @@
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/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// This code is directly lifted from the Kubernetes codebase in order to avoid relying on the k8s.io/kubernetes package.
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// For reference: https://github.com/kubernetes/kubernetes/blob/release-1.22/pkg/api/v1/pod/util.go,
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// https://github.com/kubernetes/kubernetes/blob/release-1.22/pkg/apis/core/validation/validation.go#L228,
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// https://github.com/kubernetes/kubernetes/blob/release-1.22/pkg/kubelet/configmap/configmap_manager.go#L101-L108,
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// https://github.com/kubernetes/kubernetes/blob/release-1.22/pkg/kubelet/secret/secret_manager.go#L102-L109
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//
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package defaultinterpreter
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import (
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"fmt"
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corev1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/meta"
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apimachineryvalidation "k8s.io/apimachinery/pkg/api/validation"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/util/sets"
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)
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// ValidatePodName can be used to check whether the given pod name is valid.
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// Prefix indicates this name will be used as part of generation, in which case
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// trailing dashes are allowed.
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var ValidatePodName = apimachineryvalidation.NameIsDNSSubdomain
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// ContainerType signifies container type
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type ContainerType int
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const (
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// Containers is for normal containers
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Containers ContainerType = 1 << iota
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// InitContainers is for init containers
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InitContainers
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// EphemeralContainers is for ephemeral containers
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EphemeralContainers
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)
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// AllContainers specifies that all containers be visited
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const AllContainers ContainerType = (InitContainers | Containers | EphemeralContainers)
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// Visitor is called with each object name, and returns true if visiting should continue
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type Visitor func(name string) (shouldContinue bool)
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// ContainerVisitor is called with each container spec, and returns true
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// if visiting should continue.
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type ContainerVisitor func(container *corev1.Container, containerType ContainerType) (shouldContinue bool)
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// VisitContainers invokes the visitor function with a pointer to every container
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// spec in the given pod spec with type set in mask. If visitor returns false,
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// visiting is short-circuited. VisitContainers returns true if visiting completes,
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// false if visiting was short-circuited.
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func VisitContainers(podSpec *corev1.PodSpec, mask ContainerType, visitor ContainerVisitor) bool {
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if mask&InitContainers != 0 {
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for i := range podSpec.InitContainers {
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if !visitor(&podSpec.InitContainers[i], InitContainers) {
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return false
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}
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}
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}
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if mask&Containers != 0 {
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for i := range podSpec.Containers {
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if !visitor(&podSpec.Containers[i], Containers) {
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return false
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}
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}
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}
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if mask&EphemeralContainers != 0 {
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for i := range podSpec.EphemeralContainers {
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if !visitor((*corev1.Container)(&podSpec.EphemeralContainers[i].EphemeralContainerCommon), EphemeralContainers) {
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return false
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}
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}
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}
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return true
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}
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func visitContainerSecretNames(container *corev1.Container, visitor Visitor) bool {
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for _, env := range container.EnvFrom {
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if env.SecretRef != nil {
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if !visitor(env.SecretRef.Name) {
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return false
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}
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}
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}
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for _, envVar := range container.Env {
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if envVar.ValueFrom != nil && envVar.ValueFrom.SecretKeyRef != nil {
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if !visitor(envVar.ValueFrom.SecretKeyRef.Name) {
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return false
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}
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}
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}
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return true
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}
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func visitContainerConfigmapNames(container *corev1.Container, visitor Visitor) bool {
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for _, env := range container.EnvFrom {
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if env.ConfigMapRef != nil {
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if !visitor(env.ConfigMapRef.Name) {
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return false
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}
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}
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}
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for _, envVar := range container.Env {
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if envVar.ValueFrom != nil && envVar.ValueFrom.ConfigMapKeyRef != nil {
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if !visitor(envVar.ValueFrom.ConfigMapKeyRef.Name) {
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return false
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}
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}
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}
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return true
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}
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// GetPodFromTemplate generates pod object from a template.
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func GetPodFromTemplate(template *corev1.PodTemplateSpec, parentObject runtime.Object, controllerRef *metav1.OwnerReference) (*corev1.Pod, error) {
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desiredLabels := getPodsLabelSet(template)
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desiredFinalizers := getPodsFinalizers(template)
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desiredAnnotations := getPodsAnnotationSet(template)
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accessor, err := meta.Accessor(parentObject)
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if err != nil {
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return nil, fmt.Errorf("parentObject does not have ObjectMeta, %v", err)
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}
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prefix := getPodsPrefix(accessor.GetName())
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pod := &corev1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Labels: desiredLabels,
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Annotations: desiredAnnotations,
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GenerateName: prefix,
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Finalizers: desiredFinalizers,
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Namespace: accessor.GetNamespace(),
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},
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}
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if controllerRef != nil {
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pod.OwnerReferences = append(pod.OwnerReferences, *controllerRef)
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}
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pod.Spec = *template.Spec.DeepCopy()
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return pod, nil
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}
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func getPodsLabelSet(template *corev1.PodTemplateSpec) labels.Set {
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desiredLabels := make(labels.Set)
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for k, v := range template.Labels {
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desiredLabels[k] = v
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}
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return desiredLabels
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}
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func getPodsFinalizers(template *corev1.PodTemplateSpec) []string {
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desiredFinalizers := make([]string, len(template.Finalizers))
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copy(desiredFinalizers, template.Finalizers)
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return desiredFinalizers
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}
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func getPodsAnnotationSet(template *corev1.PodTemplateSpec) labels.Set {
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desiredAnnotations := make(labels.Set)
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for k, v := range template.Annotations {
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desiredAnnotations[k] = v
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}
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return desiredAnnotations
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}
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func getPodsPrefix(controllerName string) string {
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// use the dash (if the name isn't too long) to make the pod name a bit prettier
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prefix := fmt.Sprintf("%s-", controllerName)
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if len(ValidatePodName(prefix, true)) != 0 {
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prefix = controllerName
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}
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return prefix
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}
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func skipEmptyNames(visitor Visitor) Visitor {
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return func(name string) bool {
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if len(name) == 0 {
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// continue visiting
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return true
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}
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// delegate to visitor
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return visitor(name)
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}
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}
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// VisitPodConfigmapNames invokes the visitor function with the name of every configmap
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// referenced by the pod spec. If visitor returns false, visiting is short-circuited.
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// Transitive references (e.g. pod -> pvc -> pv -> secret) are not visited.
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// Returns true if visiting completed, false if visiting was short-circuited.
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func VisitPodConfigmapNames(pod *corev1.Pod, visitor Visitor) bool {
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visitor = skipEmptyNames(visitor)
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VisitContainers(&pod.Spec, AllContainers, func(c *corev1.Container, containerType ContainerType) bool {
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return visitContainerConfigmapNames(c, visitor)
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})
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var source *corev1.VolumeSource
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for i := range pod.Spec.Volumes {
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source = &pod.Spec.Volumes[i].VolumeSource
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switch {
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case source.Projected != nil:
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for j := range source.Projected.Sources {
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if source.Projected.Sources[j].ConfigMap != nil {
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if !visitor(source.Projected.Sources[j].ConfigMap.Name) {
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return false
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}
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}
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}
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case source.ConfigMap != nil:
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if !visitor(source.ConfigMap.Name) {
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return false
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}
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}
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}
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return true
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}
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// VisitPodSecretNames invokes the visitor function with the name of every secret
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// referenced by the pod spec. If visitor returns false, visiting is short-circuited.
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// Transitive references (e.g. pod -> pvc -> pv -> secret) are not visited.
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// Returns true if visiting completed, false if visiting was short-circuited.
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//nolint:gocyclo
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func VisitPodSecretNames(pod *corev1.Pod, visitor Visitor) bool {
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visitor = skipEmptyNames(visitor)
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for _, reference := range pod.Spec.ImagePullSecrets {
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if !visitor(reference.Name) {
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return false
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}
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}
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VisitContainers(&pod.Spec, AllContainers, func(c *corev1.Container, containerType ContainerType) bool {
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return visitContainerSecretNames(c, visitor)
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})
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var source *corev1.VolumeSource
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for i := range pod.Spec.Volumes {
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source = &pod.Spec.Volumes[i].VolumeSource
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switch {
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case source.AzureFile != nil:
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if len(source.AzureFile.SecretName) > 0 && !visitor(source.AzureFile.SecretName) {
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return false
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}
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case source.CephFS != nil:
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if source.CephFS.SecretRef != nil && !visitor(source.CephFS.SecretRef.Name) {
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return false
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}
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case source.Cinder != nil:
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if source.Cinder.SecretRef != nil && !visitor(source.Cinder.SecretRef.Name) {
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return false
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}
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case source.FlexVolume != nil:
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if source.FlexVolume.SecretRef != nil && !visitor(source.FlexVolume.SecretRef.Name) {
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return false
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}
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case source.Projected != nil:
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for j := range source.Projected.Sources {
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if source.Projected.Sources[j].Secret != nil {
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if !visitor(source.Projected.Sources[j].Secret.Name) {
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return false
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}
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}
|
||||
}
|
||||
case source.RBD != nil:
|
||||
if source.RBD.SecretRef != nil && !visitor(source.RBD.SecretRef.Name) {
|
||||
return false
|
||||
}
|
||||
case source.Secret != nil:
|
||||
if !visitor(source.Secret.SecretName) {
|
||||
return false
|
||||
}
|
||||
case source.ScaleIO != nil:
|
||||
if source.ScaleIO.SecretRef != nil && !visitor(source.ScaleIO.SecretRef.Name) {
|
||||
return false
|
||||
}
|
||||
case source.ISCSI != nil:
|
||||
if source.ISCSI.SecretRef != nil && !visitor(source.ISCSI.SecretRef.Name) {
|
||||
return false
|
||||
}
|
||||
case source.StorageOS != nil:
|
||||
if source.StorageOS.SecretRef != nil && !visitor(source.StorageOS.SecretRef.Name) {
|
||||
return false
|
||||
}
|
||||
case source.CSI != nil:
|
||||
if source.CSI.NodePublishSecretRef != nil && !visitor(source.CSI.NodePublishSecretRef.Name) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
func getSecretNames(pod *corev1.Pod) sets.String {
|
||||
result := sets.NewString()
|
||||
VisitPodSecretNames(pod, func(name string) bool {
|
||||
result.Insert(name)
|
||||
return true
|
||||
})
|
||||
return result
|
||||
}
|
||||
|
||||
func getConfigMapNames(pod *corev1.Pod) sets.String {
|
||||
result := sets.NewString()
|
||||
VisitPodConfigmapNames(pod, func(name string) bool {
|
||||
result.Insert(name)
|
||||
return true
|
||||
})
|
||||
return result
|
||||
}
|
||||
|
|
@ -35,6 +35,8 @@ type ResourceInterpreter interface {
|
|||
// AggregateStatus returns the objects that based on the 'object' but with status aggregated.
|
||||
AggregateStatus(object *unstructured.Unstructured, aggregatedStatusItems []workv1alpha2.AggregatedStatusItem) (*unstructured.Unstructured, error)
|
||||
|
||||
// GetDependencies returns the dependent resources of the given object.
|
||||
GetDependencies(object *unstructured.Unstructured) (dependencies []configv1alpha1.DependentObjectReference, err error)
|
||||
// other common method
|
||||
}
|
||||
|
||||
|
|
@ -153,3 +155,22 @@ func (i *customResourceInterpreterImpl) AggregateStatus(object *unstructured.Uns
|
|||
|
||||
return i.defaultInterpreter.AggregateStatus(object, aggregatedStatusItems)
|
||||
}
|
||||
|
||||
// GetDependencies returns the dependent resources of the given object.
|
||||
func (i *customResourceInterpreterImpl) GetDependencies(object *unstructured.Unstructured) (dependencies []configv1alpha1.DependentObjectReference, err error) {
|
||||
klog.V(4).Infof("Begin to get dependencies for object: %v %s/%s.", object.GroupVersionKind(), object.GetNamespace(), object.GetName())
|
||||
|
||||
dependencies, hookEnabled, err := i.customizedInterpreter.GetDependencies(context.TODO(), &webhook.RequestAttributes{
|
||||
Operation: configv1alpha1.InterpreterOperationInterpretDependency,
|
||||
Object: object,
|
||||
})
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if hookEnabled {
|
||||
return
|
||||
}
|
||||
|
||||
dependencies, err = i.defaultInterpreter.GetDependencies(object)
|
||||
return
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue