forked from containers/build
/
dependencies.go
87 lines (78 loc) · 2.32 KB
/
dependencies.go
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// Copyright 2015 The appc Authors
//
// 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 lib
import (
"github.com/appc/acbuild/util"
"github.com/appc/spec/schema"
"github.com/appc/spec/schema/types"
)
func removeDep(imageName types.ACIdentifier) func(*schema.ImageManifest) error {
return func(s *schema.ImageManifest) error {
foundOne := false
for i := len(s.Dependencies) - 1; i >= 0; i-- {
if s.Dependencies[i].ImageName == imageName {
foundOne = true
s.Dependencies = append(
s.Dependencies[:i],
s.Dependencies[i+1:]...)
}
}
if !foundOne {
return ErrNotFound
}
return nil
}
}
// AddDependency will add a dependency with the given name, id, labels, and size
// to the untarred ACI stored at a.CurrentACIPath. If the dependency already
// exists its fields will be updated to the new values.
func (a *ACBuild) AddDependency(imageName types.ACIdentifier, imageId *types.Hash, labels types.Labels, size uint) (err error) {
if err = a.lock(); err != nil {
return err
}
defer func() {
if err1 := a.unlock(); err == nil {
err = err1
}
}()
fn := func(s *schema.ImageManifest) error {
removeDep(imageName)(s)
s.Dependencies = append(s.Dependencies,
types.Dependency{
ImageName: imageName,
ImageID: imageId,
Labels: labels,
Size: size,
})
return nil
}
return util.ModifyManifest(fn, a.CurrentACIPath)
}
// RemoveDependency will remove the dependency with the given name from the
// untarred ACI stored at a.CurrentACIPath.
func (a *ACBuild) RemoveDependency(imageName string) (err error) {
if err = a.lock(); err != nil {
return err
}
defer func() {
if err1 := a.unlock(); err == nil {
err = err1
}
}()
acid, err := types.NewACIdentifier(imageName)
if err != nil {
return err
}
return util.ModifyManifest(removeDep(*acid), a.CurrentACIPath)
}