Merge pull request #85225 from DataDog/eric.mountain/cleanup_refmanager_master

Removes container RefManager

pkg/kubelet/container/BUILD

@@ -5,7 +5,6 @@ go_library(
     srcs = [
         "cache.go",
         "container_gc.go",
-        "container_reference_manager.go",
         "helpers.go",
         "os.go",
         "ref.go",

pkg/kubelet/container/container_reference_manager.go

@@ -1,60 +0,0 @@
-/*
-Copyright 2015 The Kubernetes 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 container
-
-import (
-	"sync"
-
-	"k8s.io/api/core/v1"
-)
-
-// RefManager manages the references for the containers.
-// The references are used for reporting events such as creation,
-// failure, etc. This manager is thread-safe, no locks are necessary
-// for the caller.
-type RefManager struct {
-	sync.RWMutex
-	containerIDToRef map[ContainerID]*v1.ObjectReference
-}
-
-// NewRefManager creates and returns a container reference manager
-// with empty contents.
-func NewRefManager() *RefManager {
-	return &RefManager{containerIDToRef: make(map[ContainerID]*v1.ObjectReference)}
-}
-
-// SetRef stores a reference to a pod's container, associating it with the given container ID.
-func (c *RefManager) SetRef(id ContainerID, ref *v1.ObjectReference) {
-	c.Lock()
-	defer c.Unlock()
-	c.containerIDToRef[id] = ref
-}
-
-// ClearRef forgets the given container id and its associated container reference.
-func (c *RefManager) ClearRef(id ContainerID) {
-	c.Lock()
-	defer c.Unlock()
-	delete(c.containerIDToRef, id)
-}
-
-// GetRef returns the container reference of the given ID, or (nil, false) if none is stored.
-func (c *RefManager) GetRef(id ContainerID) (ref *v1.ObjectReference, ok bool) {
-	c.RLock()
-	defer c.RUnlock()
-	ref, ok = c.containerIDToRef[id]
-	return ref, ok
-}