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ctrd_cio_cache.go
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/
ctrd_cio_cache.go
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// Copyright (c) 2021 Contributors to the Eclipse Foundation
//
// See the NOTICE file(s) distributed with this work for additional
// information regarding copyright ownership.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
// which is available at https://www.apache.org/licenses/LICENSE-2.0.
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
package ctr
import "sync"
// Cache saves the all container's io.
type cioCache struct {
m *sync.Map
}
// нewCache creates a container's io storage.
func newCache() *cioCache {
return &cioCache{
m: &sync.Map{},
}
}
// Put writes a container's io into storage.
func (c *cioCache) Put(id string, io IO) error {
c.m.Store(id, io)
return nil
}
// Get reads a container's io by id.
func (c *cioCache) Get(id string) IO {
obj, ok := c.m.Load(id)
if !ok {
return nil
}
if io, ok := obj.(IO); ok {
return io
}
return nil
}
// Remove removes the container's io.
func (c *cioCache) Remove(id string) {
c.m.Delete(id)
}