/
context.go
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/
context.go
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// Copyright © 2021 Alibaba Group Holding Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package buildinstruction
import (
"github.com/alibaba/sealer/common"
"github.com/alibaba/sealer/image"
"github.com/alibaba/sealer/image/cache"
"github.com/alibaba/sealer/image/store"
v1 "github.com/alibaba/sealer/types/api/v1"
"github.com/opencontainers/go-digest"
)
type ExecContext struct {
BuildContext string
BuildType string
//cache flag,will change for each layer ctx
ContinueCache bool
//cache chain to hit,will change for each layer ctx
ParentID cache.ChainID
//static method to do cache
CacheSvc cache.Service
Prober image.Prober
//used to gen layer
LayerStore store.LayerStore
}
type InstructionContext struct {
// dynamic method to init different instruction
CurrentLayer *v1.Layer
BaseLayers []v1.Layer
Rootfs string
}
type Out struct {
LayerID digest.Digest
ParentID cache.ChainID
ContinueCache bool
}
func NewInstruction(ic InstructionContext) (Interface, error) {
// init each inst via layer type
switch ic.CurrentLayer.Type {
case common.CMDCOMMAND, common.RUNCOMMAND:
return NewCmdInstruction(ic)
case common.COPYCOMMAND:
return NewCopyInstruction(ic)
}
return nil, nil
}
func NewExecContextWithoutCache(buildType, buildContext string, layerStore store.LayerStore) ExecContext {
return ExecContext{
LayerStore: layerStore,
BuildContext: buildContext,
BuildType: buildType,
}
}
func NewExecContext(buildType, buildContext string, imageService image.Service, layerStore store.LayerStore) ExecContext {
chainSvc, err := cache.NewService()
if err != nil {
return ExecContext{}
}
prober := image.NewImageProber(imageService, true)
return ExecContext{
LayerStore: layerStore,
BuildContext: buildContext,
BuildType: buildType,
CacheSvc: chainSvc,
ParentID: cache.ChainID(""),
Prober: prober,
ContinueCache: true,
}
}