105 lines
2.1 KiB
Go
105 lines
2.1 KiB
Go
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package dockersave
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import (
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"fmt"
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"github.com/mitchellh/packer/builder/docker"
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"github.com/mitchellh/packer/common"
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"github.com/mitchellh/packer/packer"
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"github.com/mitchellh/packer/post-processor/docker-import"
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"os"
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)
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const BuilderId = "packer.post-processor.docker-save"
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type Config struct {
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common.PackerConfig `mapstructure:",squash"`
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Path string `mapstructure:"path"`
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tpl *packer.ConfigTemplate
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}
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type PostProcessor struct {
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Driver docker.Driver
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config Config
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}
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func (p *PostProcessor) Configure(raws ...interface{}) error {
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_, err := common.DecodeConfig(&p.config, raws...)
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if err != nil {
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return err
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}
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p.config.tpl, err = packer.NewConfigTemplate()
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if err != nil {
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return err
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}
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p.config.tpl.UserVars = p.config.PackerUserVars
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// Accumulate any errors
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errs := new(packer.MultiError)
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templates := map[string]*string{
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"path": &p.config.Path,
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}
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for key, ptr := range templates {
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if *ptr == "" {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("%s must be set", key))
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}
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*ptr, err = p.config.tpl.Process(*ptr, nil)
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Error processing %s: %s", key, err))
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}
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}
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if len(errs.Errors) > 0 {
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return errs
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}
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return nil
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}
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func (p *PostProcessor) PostProcess(ui packer.Ui, artifact packer.Artifact) (packer.Artifact, bool, error) {
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if artifact.BuilderId() != dockerimport.BuilderId {
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err := fmt.Errorf(
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"Unknown artifact type: %s\nCan only save Docker builder artifacts.",
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artifact.BuilderId())
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return nil, false, err
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}
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path := p.config.Path
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// Open the file that we're going to write to
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f, err := os.Create(path)
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if err != nil {
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err := fmt.Errorf("Error creating output file: %s", err)
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return nil, false, err
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}
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driver := p.Driver
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if driver == nil {
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// If no driver is set, then we use the real driver
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driver = &docker.DockerDriver{Tpl: p.config.tpl, Ui: ui}
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}
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ui.Message("Saving image: " + artifact.Id())
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if err := driver.SaveImage(artifact.Id(), f); err != nil {
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f.Close()
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os.Remove(f.Name())
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return nil, false, err
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}
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f.Close()
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ui.Message("Saved to: " + path)
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return artifact, true, nil
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}
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