packer-cn/post-processor/docker-import/post-processor.go

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package dockerimport
import (
"fmt"
"github.com/mitchellh/packer/builder/docker"
"github.com/mitchellh/packer/common"
"github.com/mitchellh/packer/packer"
)
const BuilderId = "packer.post-processor.docker-import"
type Config struct {
common.PackerConfig `mapstructure:",squash"`
Repository string `mapstructure:"repository"`
Tag string `mapstructure:"tag"`
tpl *packer.ConfigTemplate
}
type PostProcessor struct {
config Config
}
func (p *PostProcessor) Configure(raws ...interface{}) error {
_, err := common.DecodeConfig(&p.config, raws...)
if err != nil {
return err
}
p.config.tpl, err = packer.NewConfigTemplate()
if err != nil {
return err
}
p.config.tpl.UserVars = p.config.PackerUserVars
// Accumulate any errors
errs := new(packer.MultiError)
templates := map[string]*string{
"repository": &p.config.Repository,
"tag": &p.config.Tag,
}
for key, ptr := range templates {
if *ptr == "" {
errs = packer.MultiErrorAppend(
errs, fmt.Errorf("%s must be set", key))
}
*ptr, err = p.config.tpl.Process(*ptr, nil)
if err != nil {
errs = packer.MultiErrorAppend(
errs, fmt.Errorf("Error processing %s: %s", key, err))
}
}
if len(errs.Errors) > 0 {
return errs
}
return nil
}
func (p *PostProcessor) PostProcess(ui packer.Ui, artifact packer.Artifact) (packer.Artifact, bool, error) {
if artifact.BuilderId() != docker.BuilderId {
err := fmt.Errorf(
"Unknown artifact type: %s\nCan only import from Docker builder artifacts.",
artifact.BuilderId())
return nil, false, err
}
importRepo := p.config.Repository
if p.config.Tag != "" {
importRepo += ":" + p.config.Tag
}
driver := &docker.DockerDriver{Tpl: p.config.tpl, Ui: ui}
ui.Message("Importing image: " + artifact.Id())
ui.Message("Repository: " + importRepo)
id, err := driver.Import(artifact.Files()[0], importRepo)
if err != nil {
return nil, false, err
}
ui.Message("Imported ID: " + id)
// Build the artifact
artifact = &docker.ImportArtifact{
BuilderIdValue: BuilderId,
Driver: driver,
IdValue: importRepo,
}
return artifact, false, nil
}