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Add Map() method to LayerStore interface

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This method return a map associating a chain ID to its layer object

Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>
This commit is contained in:
Kenfe-Mickael Laventure 2016-08-23 16:08:43 -07:00
parent ad398f132b
commit 148aef9199
3 changed files with 24 additions and 0 deletions
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10
distribution/xfer/download_test.go
View file

@ -71,6 +71,16 @@ func createChainIDFromParent(parent layer.ChainID, dgsts ...layer.DiffID) layer.
return createChainIDFromParent(layer.ChainID(dgst), dgsts[1:]...)
}
func (ls *mockLayerStore) Map() map[layer.ChainID]layer.Layer {
layers := map[layer.ChainID]layer.Layer{}
for k, v := range ls.layers {
layers[k] = v
}
return layers
}
func (ls *mockLayerStore) Register(reader io.Reader, parentID layer.ChainID) (layer.Layer, error) {
return ls.RegisterWithDescriptor(reader, parentID, distribution.Descriptor{})
}

1
layer/layer.go
View file

@ -170,6 +170,7 @@ type MountInit func(root string) error
type Store interface {
Register(io.Reader, ChainID) (Layer, error)
Get(ChainID) (Layer, error)
Map() map[ChainID]Layer
Release(Layer) ([]Metadata, error)
CreateRWLayer(id string, parent ChainID, mountLabel string, initFunc MountInit, storageOpt map[string]string) (RWLayer, error)

13
layer/layer_store.go
View file

@ -360,6 +360,19 @@ func (ls *layerStore) Get(l ChainID) (Layer, error) {
return layer.getReference(), nil
}
func (ls *layerStore) Map() map[ChainID]Layer {
ls.layerL.Lock()
defer ls.layerL.Unlock()
layers := map[ChainID]Layer{}
for k, v := range ls.layerMap {
layers[k] = v
}
return layers
}
func (ls *layerStore) deleteLayer(layer *roLayer, metadata *Metadata) error {
err := ls.driver.Remove(layer.cacheID)
if err != nil {