mirror of https://github.com/kubevela/kubevela.git
135 lines
4.1 KiB
Go
135 lines
4.1 KiB
Go
/*
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Copyright 2021 The KubeVela 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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package resourcekeeper
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import (
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"context"
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pkgmaps "github.com/kubevela/pkg/util/maps"
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"github.com/pkg/errors"
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"k8s.io/apimachinery/pkg/api/meta"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"github.com/oam-dev/kubevela/apis/core.oam.dev/v1beta1"
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"github.com/oam-dev/kubevela/pkg/multicluster"
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"github.com/oam-dev/kubevela/pkg/oam"
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"github.com/oam-dev/kubevela/pkg/utils/apply"
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)
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type resourceCacheEntry struct {
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exists bool
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err error
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obj *unstructured.Unstructured
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mr v1beta1.ManagedResource
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loaded bool
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usedBy []*v1beta1.ResourceTracker
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latestActiveRT *v1beta1.ResourceTracker
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gcExecutorRT *v1beta1.ResourceTracker
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}
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type resourceCache struct {
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app *v1beta1.Application
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cli client.Client
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m *pkgmaps.SyncMap[string, *resourceCacheEntry]
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}
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func newResourceCache(cli client.Client, app *v1beta1.Application) *resourceCache {
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return &resourceCache{
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app: app,
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cli: cli,
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m: pkgmaps.NewSyncMap[string, *resourceCacheEntry](),
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}
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}
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func (cache *resourceCache) registerResourceTrackers(rts ...*v1beta1.ResourceTracker) {
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for _, rt := range rts {
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if rt == nil {
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continue
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}
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for _, mr := range rt.Spec.ManagedResources {
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key := mr.ResourceKey()
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entry, cached := cache.m.Get(key)
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if !cached {
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entry = &resourceCacheEntry{obj: mr.ToUnstructured(), mr: mr}
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cache.m.Set(key, entry)
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}
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entry.usedBy = append(entry.usedBy, rt)
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}
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}
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for _, entry := range cache.m.Data() {
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for i := len(entry.usedBy) - 1; i >= 0; i-- {
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if entry.usedBy[i].GetDeletionTimestamp() == nil {
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entry.latestActiveRT = entry.usedBy[i]
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break
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}
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}
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if entry.latestActiveRT != nil {
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entry.gcExecutorRT = entry.latestActiveRT
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} else if len(entry.usedBy) > 0 {
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entry.gcExecutorRT = entry.usedBy[len(entry.usedBy)-1]
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}
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}
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}
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func (cache *resourceCache) get(ctx context.Context, mr v1beta1.ManagedResource) *resourceCacheEntry {
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key := mr.ResourceKey()
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entry, cached := cache.m.Get(key)
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if !cached {
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entry = &resourceCacheEntry{obj: mr.ToUnstructured(), mr: mr}
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cache.m.Set(key, entry)
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}
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if !entry.loaded {
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if err := cache.cli.Get(multicluster.ContextWithClusterName(ctx, mr.Cluster), mr.NamespacedName(), entry.obj); err != nil {
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if multicluster.IsNotFoundOrClusterNotExists(err) || meta.IsNoMatchError(err) || runtime.IsNotRegisteredError(err) {
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entry.exists = false
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} else {
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entry.err = errors.Wrapf(err, "failed to get resource %s", key)
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}
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} else {
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entry.exists = cache.exists(entry.obj)
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}
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entry.loaded = true
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}
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return entry
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}
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func (cache *resourceCache) exists(manifest *unstructured.Unstructured) bool {
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if cache.app == nil {
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return true
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}
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return IsResourceManagedByApplication(manifest, cache.app)
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}
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// IsResourceManagedByApplication check if resource is managed by application
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// If the resource has no ResourceVersion, always return true.
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// If the owner label of the resource equals the given app, return true.
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// If the sharer label of the resource contains the given app, return true.
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// Otherwise, return false.
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func IsResourceManagedByApplication(manifest *unstructured.Unstructured, app *v1beta1.Application) bool {
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appKey, controlledBy := apply.GetAppKey(app), apply.GetControlledBy(manifest)
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if appKey == controlledBy || (manifest.GetResourceVersion() == "" && !hasOrphanFinalizer(app)) {
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return true
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}
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annotations := manifest.GetAnnotations()
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if annotations == nil || annotations[oam.AnnotationAppSharedBy] == "" {
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return false
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}
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return apply.ContainsSharer(annotations[oam.AnnotationAppSharedBy], app)
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}
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