78 lines
1.5 KiB
Go
78 lines
1.5 KiB
Go
package docker
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import (
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"github.com/mitchellh/multistep"
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"github.com/mitchellh/packer/common"
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"github.com/mitchellh/packer/packer"
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"log"
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)
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const BuilderId = "packer.docker"
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type Builder struct {
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config *Config
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runner multistep.Runner
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}
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func (b *Builder) Prepare(raws ...interface{}) ([]string, error) {
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c, warnings, errs := NewConfig(raws...)
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if errs != nil {
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return warnings, errs
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}
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b.config = c
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return warnings, nil
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}
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func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packer.Artifact, error) {
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driver := &DockerDriver{Ui: ui}
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if err := driver.Verify(); err != nil {
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return nil, err
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}
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steps := []multistep.Step{
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&StepTempDir{},
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&StepPull{},
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&StepRun{},
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&StepProvision{},
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&StepExport{},
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}
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// Setup the state bag and initial state for the steps
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state := new(multistep.BasicStateBag)
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state.Put("config", b.config)
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state.Put("hook", hook)
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state.Put("ui", ui)
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// Setup the driver that will talk to Docker
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state.Put("driver", driver)
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// Run!
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if b.config.PackerDebug {
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b.runner = &multistep.DebugRunner{
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Steps: steps,
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PauseFn: common.MultistepDebugFn(ui),
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}
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} else {
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b.runner = &multistep.BasicRunner{Steps: steps}
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}
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b.runner.Run(state)
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// If there was an error, return that
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if rawErr, ok := state.GetOk("error"); ok {
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return nil, rawErr.(error)
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}
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// No errors, must've worked
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artifact := &ExportArtifact{path: b.config.ExportPath}
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return artifact, nil
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}
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func (b *Builder) Cancel() {
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if b.runner != nil {
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log.Println("Cancelling the step runner...")
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b.runner.Cancel()
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}
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}
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