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image: Add lock around image cache access

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Signed-off-by: Mrunal Patel <mrunalp@gmail.com>
This commit is contained in:
Mrunal Patel 2018-02-14 17:55:31 -08:00 committed by Nalin Dahyabhai
parent c53211eacd
commit 125ec8a7bd
1 changed files with 10 additions and 1 deletions
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11
pkg/storage/image.go
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@ -5,6 +5,7 @@ import (
"net"
"path"
"strings"
"sync"
"github.com/containers/image/copy"
"github.com/containers/image/docker/reference"
@ -63,6 +64,7 @@ type imageService struct {
indexConfigs map[string]*indexInfo
registries []string
imageCache map[string]imageCacheItem
imageCacheLock sync.Mutex
}
// sizer knows its size.
@ -249,16 +251,21 @@ func (svc *imageService) ListImages(systemContext *types.SystemContext, filter s
}
}
// Handle the removals.
svc.imageCacheLock.Lock()
for _, removedID := range removedIDs {
delete(svc.imageCache, removedID)
}
svc.imageCacheLock.Unlock()
}()
for _, image := range images {
visited[image.ID] = struct{}{}
var user string
var size *uint64
var configDigest digest.Digest
if cacheItem, ok := svc.imageCache[image.ID]; ok {
svc.imageCacheLock.Lock()
cacheItem, ok := svc.imageCache[image.ID]
svc.imageCacheLock.Unlock()
if ok {
user, size, configDigest = cacheItem.user, cacheItem.size, cacheItem.configDigest
} else {
ref, err := istorage.Transport.ParseStoreReference(svc.store, "@"+image.ID)
@ -291,7 +298,9 @@ func (svc *imageService) ListImages(systemContext *types.SystemContext, filter s
size: size,
configDigest: configDigest,
}
svc.imageCacheLock.Lock()
svc.imageCache[image.ID] = cacheItem
svc.imageCacheLock.Unlock()
}
name, tags, digests := sortNamesByType(image.Names)
imageDigest, repoDigests := svc.makeRepoDigests(digests, tags, image.ID)