98 lines
2.1 KiB
Go
98 lines
2.1 KiB
Go
package lxd
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import (
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"errors"
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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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"github.com/mitchellh/packer/template/interpolate"
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"log"
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"runtime"
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)
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// The unique ID for this builder
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const BuilderId = "lxd"
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type wrappedCommandTemplate struct {
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Command string
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}
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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, errs := NewConfig(raws...)
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if errs != nil {
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return nil, errs
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}
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b.config = c
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return nil, 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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if runtime.GOOS != "linux" {
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return nil, errors.New("The lxc builder only works on linux environments.")
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}
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wrappedCommand := func(command string) (string, error) {
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b.config.ctx.Data = &wrappedCommandTemplate{Command: command}
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return interpolate.Render(b.config.CommandWrapper, &b.config.ctx)
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}
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steps := []multistep.Step{
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&stepLxdLaunch{},
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&StepProvision{},
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&stepPublish{},
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}
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// Setup the state bag
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state := new(multistep.BasicStateBag)
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state.Put("config", b.config)
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state.Put("cache", cache)
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state.Put("hook", hook)
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state.Put("ui", ui)
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state.Put("wrappedCommand", CommandWrapper(wrappedCommand))
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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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// If we were interrupted or cancelled, then just exit.
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if _, ok := state.GetOk(multistep.StateCancelled); ok {
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return nil, errors.New("Build was cancelled.")
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}
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if _, ok := state.GetOk(multistep.StateHalted); ok {
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return nil, errors.New("Build was halted.")
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}
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artifact := &Artifact{
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id: state.Get("imageFingerprint").(string),
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}
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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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