// NewRespositoryCache will create a new repoCache or rehydrate
// an existing repoCache from the portlayer k/v store
func NewRepositoryCache(client *client.PortLayer) error {
defer trace.End(trace.Begin(""))
rCache.client = client
val, err := kv.Get(client, repoKey)
if err != nil && err != kv.ErrKeyNotFound {
return err
}
if val != "" {
if err = json.Unmarshal([]byte(val), rCache); err != nil {
return fmt.Errorf("Failed to unmarshal repository cache: %s", err)
}
// hydrate refByIDCache
for _, repository := range rCache.Repositories {
for refStr, refID := range repository {
ref, _ := reference.ParseNamed(refStr)
if rCache.referencesByIDCache[refID] == nil {
rCache.referencesByIDCache[refID] = make(map[string]reference.Named)
}
rCache.referencesByIDCache[refID][refStr] = ref
}
}
// hydrate image -> layer cache
for image, layer := range rCache.Layers {
rCache.images[image] = layer
}
log.Infof("found %d repositories", len(rCache.Repositories))
log.Infof("found %d image layers", len(rCache.Layers))
}
return nil
}
// InitializeImageCache will create a new image cache or rehydrate an
// existing image cache from the portlayer k/v store
func InitializeImageCache(client *client.PortLayer) error {
defer trace.End(trace.Begin(""))
imageCache.client = client
log.Debugf("Initializing image cache")
val, err := kv.Get(client, imageCacheKey)
if err != nil && err != kv.ErrKeyNotFound {
return err
}
i := struct {
IDIndex *truncindex.TruncIndex
CacheByID map[string]*metadata.ImageConfig
CacheByName map[string]*metadata.ImageConfig
}{}
if val != "" {
if err = json.Unmarshal([]byte(val), &i); err != nil {
return fmt.Errorf("Failed to unmarshal image cache: %s", err)
}
// populate the trie with IDs
for k := range i.CacheByID {
imageCache.iDIndex.Add(k)
}
imageCache.cacheByID = i.CacheByID
imageCache.cacheByName = i.CacheByName
}
return nil
}
// InitializeLayerCache will create a new layer cache or rehydrate an
// existing layer cache from the portlayer k/v store
func InitializeLayerCache(client *client.PortLayer) error {
defer trace.End(trace.Begin(""))
log.Debugf("Initializing layer cache")
layerCache.client = client
val, err := kv.Get(client, layerCacheKey)
if err != nil && err != kv.ErrKeyNotFound {
return err
}
l := struct {
Layers map[string]*ImageWithMeta
}{}
if val != "" {
if err = json.Unmarshal([]byte(val), &l); err != nil {
return fmt.Errorf("Failed to unmarshal layer cache: %s", err)
}
layerCache.layers = l.Layers
}
return nil
}