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6b3a6e6b98
Instead of saying "Google Inc." (which is not always correct) say "The Kubernetes Authors", which is generic.
64 lines
2.0 KiB
Go
64 lines
2.0 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors 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 container
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import (
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"sync"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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)
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// RefManager manages the references for the containers.
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// The references are used for reporting events such as creation,
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// failure, etc. This manager is thread-safe, no locks are necessary
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// for the caller.
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type RefManager struct {
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sync.RWMutex
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// TODO(yifan): To use strong type.
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containerIDToRef map[string]*api.ObjectReference
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}
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// NewRefManager creates and returns a container reference manager
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// with empty contents.
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func NewRefManager() *RefManager {
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return &RefManager{containerIDToRef: make(map[string]*api.ObjectReference)}
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}
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// SetRef stores a reference to a pod's container, associating it with the given container ID.
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func (c *RefManager) SetRef(id string, ref *api.ObjectReference) {
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c.Lock()
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defer c.Unlock()
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c.containerIDToRef[id] = ref
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}
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// ClearRef forgets the given container id and its associated container reference.
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// TODO(yifan): This is currently never called. Consider to remove this function,
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// or figure out when to clear the references.
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func (c *RefManager) ClearRef(id string) {
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c.Lock()
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defer c.Unlock()
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delete(c.containerIDToRef, id)
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}
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// GetRef returns the container reference of the given ID, or (nil, false) if none is stored.
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func (c *RefManager) GetRef(id string) (ref *api.ObjectReference, ok bool) {
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c.RLock()
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defer c.RUnlock()
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ref, ok = c.containerIDToRef[id]
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return ref, ok
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}
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