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virtual: add multi-level hierarchy support
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| /* | ||
| Copyright 2022 The KCP 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 builder | ||
|
|
||
| import ( | ||
| "time" | ||
|
|
||
| "k8s.io/apimachinery/pkg/fields" | ||
| "k8s.io/apimachinery/pkg/labels" | ||
| "k8s.io/apiserver/pkg/authentication/user" | ||
| rbacinformers "k8s.io/client-go/informers/rbac/v1" | ||
|
|
||
| tenancyv1alpha1 "github.com/kcp-dev/kcp/pkg/apis/tenancy/v1alpha1" | ||
| workspaceinformer "github.com/kcp-dev/kcp/pkg/client/informers/externalversions/tenancy/v1alpha1" | ||
| frameworkrbac "github.com/kcp-dev/kcp/pkg/virtual/framework/rbac" | ||
| workspaceauth "github.com/kcp-dev/kcp/pkg/virtual/workspaces/authorization" | ||
| "github.com/kcp-dev/kcp/pkg/virtual/workspaces/registry" | ||
| ) | ||
|
|
||
| var _ registry.FilteredClusterWorkspaces = &authCacheClusterWorkspaces{} | ||
|
|
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| // authCacheClusterWorkspaces implement registry.FilteredClusterWorkspaces using an | ||
| // authorization cache. | ||
| type authCacheClusterWorkspaces struct { | ||
| // workspaceLister can enumerate workspace lists that enforce policy | ||
| clusterWorkspaceLister workspaceauth.Lister | ||
| // authCache is a cache of cluster workspaces and associated subjects for a given org. | ||
| authCache *workspaceauth.AuthorizationCache | ||
| // stopCh allows stopping the authCache for this org. | ||
| stopCh chan struct{} | ||
| } | ||
|
|
||
| // CreateAndStartOrg creates an Org that contains all the required clients and caches to retrieve user workspaces inside an org | ||
| // As part of an Org, a WorkspaceAuthCache is created and ensured to be started. | ||
| func CreateAndStartOrg( | ||
| rbacInformers rbacinformers.Interface, | ||
| clusterWorkspaceInformer workspaceinformer.ClusterWorkspaceInformer, | ||
| initialWatchers []workspaceauth.CacheWatcher, | ||
| ) *authCacheClusterWorkspaces { | ||
| authCache := workspaceauth.NewAuthorizationCache( | ||
| clusterWorkspaceInformer.Lister(), | ||
| clusterWorkspaceInformer.Informer(), | ||
| workspaceauth.NewReviewer(frameworkrbac.NewSubjectLocator(rbacInformers)), | ||
| *workspaceauth.NewAttributesBuilder(). | ||
| Verb("get"). | ||
| Resource(tenancyv1alpha1.SchemeGroupVersion.WithResource("clusterworkspaces"), "workspace"). | ||
| AttributesRecord, | ||
| rbacInformers, | ||
| ) | ||
|
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| cws := &authCacheClusterWorkspaces{ | ||
| clusterWorkspaceLister: authCache, | ||
| stopCh: make(chan struct{}), | ||
| authCache: authCache, | ||
| } | ||
|
|
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| for _, watcher := range initialWatchers { | ||
| authCache.AddWatcher(watcher) | ||
| } | ||
|
|
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| cws.authCache.Run(1*time.Second, cws.stopCh) | ||
|
|
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| return cws | ||
| } | ||
|
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| func (o *authCacheClusterWorkspaces) List(user user.Info, labelSelector labels.Selector, fieldSelector fields.Selector) (*tenancyv1alpha1.ClusterWorkspaceList, error) { | ||
| return o.clusterWorkspaceLister.List(user, labelSelector, fieldSelector) | ||
| } | ||
|
|
||
| func (o *authCacheClusterWorkspaces) RemoveWatcher(watcher workspaceauth.CacheWatcher) { | ||
| o.authCache.RemoveWatcher(watcher) | ||
| } | ||
|
|
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| func (o *authCacheClusterWorkspaces) AddWatcher(watcher workspaceauth.CacheWatcher) { | ||
| o.authCache.AddWatcher(watcher) | ||
| } | ||
|
|
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| func (o *authCacheClusterWorkspaces) Ready() bool { | ||
| return o.authCache.ReadyForAccess() | ||
| } | ||
|
|
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| func (o *authCacheClusterWorkspaces) Stop() { | ||
| o.stopCh <- struct{}{} | ||
| } |
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