github.com/alibaba/sealer@v0.8.6-0.20220430115802-37a2bdaa8173/pkg/image/store/layer_interface.go (about)

     1  // Copyright © 2021 Alibaba Group Holding Ltd.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package store
    16  
    17  import (
    18  	"io"
    19  
    20  	"github.com/opencontainers/go-digest"
    21  
    22  	"github.com/alibaba/sealer/pkg/image/reference"
    23  )
    24  
    25  type LayerStore interface {
    26  	Get(id LayerID) Layer
    27  	RegisterLayerIfNotPresent(layer Layer) error
    28  	RegisterLayerForBuilder(diffPath string) (digest.Digest, error)
    29  	Delete(id LayerID) error
    30  	DisassembleTar(layerID digest.Digest, streamReader io.ReadCloser) error
    31  	AddDistributionMetadata(layerID LayerID, named reference.Named, descriptorDigest digest.Digest) error
    32  }
    33  
    34  type Layer interface {
    35  	ID() LayerID
    36  	TarStream() (io.ReadCloser, error)
    37  	SimpleID() string
    38  	Size() int64
    39  	MediaType() string
    40  	DistributionMetadata() map[string]digest.Digest
    41  	SetSize(size int64)
    42  }