91 lines
2.1 KiB
Go
91 lines
2.1 KiB
Go
/*
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Copyright The containerd 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 docker
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import (
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"fmt"
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"sync"
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"github.com/containerd/containerd/content"
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"github.com/containerd/containerd/errdefs"
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"github.com/moby/locker"
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)
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// Status of a content operation
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type Status struct {
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content.Status
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Committed bool
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// ErrClosed contains error encountered on close.
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ErrClosed error
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// UploadUUID is used by the Docker registry to reference blob uploads
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UploadUUID string
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}
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// StatusTracker to track status of operations
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type StatusTracker interface {
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GetStatus(string) (Status, error)
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SetStatus(string, Status)
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}
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// StatusTrackLocker to track status of operations with lock
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type StatusTrackLocker interface {
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StatusTracker
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Lock(string)
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Unlock(string)
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}
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type memoryStatusTracker struct {
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statuses map[string]Status
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m sync.Mutex
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locker *locker.Locker
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}
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// NewInMemoryTracker returns a StatusTracker that tracks content status in-memory
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func NewInMemoryTracker() StatusTrackLocker {
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return &memoryStatusTracker{
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statuses: map[string]Status{},
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locker: locker.New(),
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}
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}
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func (t *memoryStatusTracker) GetStatus(ref string) (Status, error) {
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t.m.Lock()
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defer t.m.Unlock()
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status, ok := t.statuses[ref]
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if !ok {
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return Status{}, fmt.Errorf("status for ref %v: %w", ref, errdefs.ErrNotFound)
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}
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return status, nil
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}
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func (t *memoryStatusTracker) SetStatus(ref string, status Status) {
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t.m.Lock()
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t.statuses[ref] = status
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t.m.Unlock()
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}
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func (t *memoryStatusTracker) Lock(ref string) {
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t.locker.Lock(ref)
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}
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func (t *memoryStatusTracker) Unlock(ref string) {
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t.locker.Unlock(ref)
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}
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