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package dockersave
import (
"fmt"
"os"
"github.com/mitchellh/packer/builder/docker"
"github.com/mitchellh/packer/common"
"github.com/mitchellh/packer/helper/config"
"github.com/mitchellh/packer/packer"
"github.com/mitchellh/packer/post-processor/docker-import"
"github.com/mitchellh/packer/post-processor/docker-tag"
"github.com/mitchellh/packer/template/interpolate"
)
const BuilderId = "packer.post-processor.docker-save"
type Config struct {
common.PackerConfig `mapstructure:",squash"`
Path string `mapstructure:"path"`
ctx interpolate.Context
}
type PostProcessor struct {
Driver docker.Driver
config Config
}
func (p *PostProcessor) Configure(raws ...interface{}) error {
err := config.Decode(&p.config, &config.DecodeOpts{
Interpolate: true,
InterpolateContext: &p.config.ctx,
InterpolateFilter: &interpolate.RenderFilter{
Exclude: []string{},
},
}, raws...)
if err != nil {
return err
}
return nil
}
func (p *PostProcessor) PostProcess(ui packer.Ui, artifact packer.Artifact) (packer.Artifact, bool, error) {
if artifact.BuilderId() != dockerimport.BuilderId &&
artifact.BuilderId() != dockertag.BuilderId {
err := fmt.Errorf(
"Unknown artifact type: %s\nCan only save Docker builder artifacts.",
artifact.BuilderId())
return nil, false, err
}
path := p.config.Path
// Open the file that we're going to write to
f, err := os.Create(path)
if err != nil {
err := fmt.Errorf("Error creating output file: %s", err)
return nil, false, err
}
driver := p.Driver
if driver == nil {
// If no driver is set, then we use the real driver
driver = &docker.DockerDriver{Ctx: &p.config.ctx, Ui: ui}
}
ui.Message("Saving image: " + artifact.Id())
if err := driver.SaveImage(artifact.Id(), f); err != nil {
f.Close()
os.Remove(f.Name())
return nil, false, err
}
f.Close()
ui.Message("Saved to: " + path)
return artifact, true, nil
}
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