93 lines
2.2 KiB
Go
93 lines
2.2 KiB
Go
package lxc
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import (
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"context"
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"os"
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"path/filepath"
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"github.com/hashicorp/hcl/v2/hcldec"
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"github.com/hashicorp/packer/packer"
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"github.com/hashicorp/packer/packer-plugin-sdk/multistep"
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"github.com/hashicorp/packer/packer-plugin-sdk/multistep/commonsteps"
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packersdk "github.com/hashicorp/packer/packer-plugin-sdk/packer"
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"github.com/hashicorp/packer/packer-plugin-sdk/template/interpolate"
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)
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// The unique ID for this builder
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const BuilderId = "ustream.lxc"
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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) ConfigSpec() hcldec.ObjectSpec { return b.config.FlatMapstructure().HCL2Spec() }
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func (b *Builder) Prepare(raws ...interface{}) ([]string, []string, error) {
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errs := b.config.Prepare(raws...)
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if errs != nil {
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return nil, nil, errs
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}
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return nil, nil, nil
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}
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func (b *Builder) Run(ctx context.Context, ui packersdk.Ui, hook packer.Hook) (packersdk.Artifact, error) {
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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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new(stepPrepareOutputDir),
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new(stepLxcCreate),
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&StepWaitInit{
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WaitTimeout: b.config.InitTimeout,
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},
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new(StepProvision),
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new(stepExport),
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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("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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b.runner = commonsteps.NewRunnerWithPauseFn(steps, b.config.PackerConfig, ui, state)
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b.runner.Run(ctx, 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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// Compile the artifact list
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files := make([]string, 0, 5)
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visit := func(path string, info os.FileInfo, err error) error {
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if !info.IsDir() {
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files = append(files, path)
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}
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return err
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}
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if err := filepath.Walk(b.config.OutputDir, visit); err != nil {
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return nil, err
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}
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artifact := &Artifact{
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dir: b.config.OutputDir,
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f: files,
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StateData: map[string]interface{}{"generated_data": state.Get("generated_data")},
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}
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return artifact, nil
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}
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