428d2263e5
This commit adds support to core resources to enable deferred deletion of resources. Clients may optionally specify a time period after which resources must be deleted via an object sent with their DELETE. That object may define an optional grace period in seconds, or allow the default "preferred" value for a resource to be used. Once the object is marked as pending deletion, the deletionTimestamp field will be set and an etcd TTL will be in place. Clients should assume resources that have deletionTimestamp set will be deleted at some point in the future. Other changes will come later to enable graceful deletion on a per resource basis.
52 lines
1.9 KiB
Go
52 lines
1.9 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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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 rest
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import (
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
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)
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// RESTDeleteStrategy defines deletion behavior on an object that follows Kubernetes
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// API conventions.
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type RESTDeleteStrategy interface {
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runtime.ObjectTyper
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// CheckGracefulDelete should return true if the object can be gracefully deleted and set
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// any default values on the DeleteOptions.
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CheckGracefulDelete(obj runtime.Object, options *api.DeleteOptions) bool
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}
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// BeforeDelete tests whether the object can be gracefully deleted. If graceful is set the object
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// should be gracefully deleted, if gracefulPending is set the object has already been gracefully deleted
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// (and the provided grace period is longer than the time to deletion), and an error is returned if the
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// condition cannot be checked or the gracePeriodSeconds is invalid. The options argument may be updated with
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// default values if graceful is true.
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func BeforeDelete(strategy RESTDeleteStrategy, ctx api.Context, obj runtime.Object, options *api.DeleteOptions) (graceful, gracefulPending bool, err error) {
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if strategy == nil {
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return false, false, nil
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}
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_, _, kerr := objectMetaAndKind(strategy, obj)
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if kerr != nil {
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return false, false, kerr
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}
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if !strategy.CheckGracefulDelete(obj, options) {
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return false, false, nil
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}
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return true, false, nil
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}
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