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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 types
import (
"encoding/json"
"errors"
)
type Dependencies []Dependency
type Dependency struct {
ImageName ACIdentifier `json:"imageName"`
ImageID *Hash `json:"imageID,omitempty"`
Labels Labels `json:"labels,omitempty"`
Size uint `json:"size,omitempty"`
}
type dependency Dependency
func (d Dependency) assertValid() error {
if len(d.ImageName) < 1 {
return errors.New(`imageName cannot be empty`)
}
return nil
}
func (d Dependency) MarshalJSON() ([]byte, error) {
if err := d.assertValid(); err != nil {
return nil, err
}
return json.Marshal(dependency(d))
}
func (d *Dependency) UnmarshalJSON(data []byte) error {
var jd dependency
if err := json.Unmarshal(data, &jd); err != nil {
return err
}
nd := Dependency(jd)
if err := nd.assertValid(); err != nil {
return err
}
*d = nd
return nil
}
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