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61 lines
2.1 KiB
Go
61 lines
2.1 KiB
Go
/*
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Copyright 2018 The Kubernetes 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 manager
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import (
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"k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/runtime"
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)
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// Manager is the interface for registering and unregistering
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// objects referenced by pods in the underlying cache and
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// extracting those from that cache if needed.
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type Manager interface {
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// Get object by its namespace and name.
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GetObject(namespace, name string) (runtime.Object, error)
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// WARNING: Register/UnregisterPod functions should be efficient,
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// i.e. should not block on network operations.
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// RegisterPod registers all objects referenced from a given pod.
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//
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// NOTE: All implementations of RegisterPod should be idempotent.
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RegisterPod(pod *v1.Pod)
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// UnregisterPod unregisters objects referenced from a given pod that are not
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// used by any other registered pod.
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//
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// NOTE: All implementations of UnregisterPod should be idempotent.
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UnregisterPod(pod *v1.Pod)
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}
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// Store is the interface for a object cache that
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// can be used by cacheBasedManager.
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type Store interface {
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// AddReference adds a reference to the object to the store.
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// Note that multiple additions to the store has to be allowed
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// in the implementations and effectively treated as refcounted.
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AddReference(namespace, name string)
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// DeleteReference deletes reference to the object from the store.
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// Note that object should be deleted only when there was a
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// corresponding Delete call for each of Add calls (effectively
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// when refcount was reduced to zero).
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DeleteReference(namespace, name string)
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// Get an object from a store.
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Get(namespace, name string) (runtime.Object, error)
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}
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