packer-cn/builder/vagrant/step_create_vagrantfile.go

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package vagrant
import (
"context"
"fmt"
"log"
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"os"
"path/filepath"
"text/template"
"github.com/hashicorp/packer/helper/multistep"
"github.com/hashicorp/packer/packer"
)
type StepCreateVagrantfile struct {
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Template string
SourceBox string
OutputDir string
SyncedFolder string
GlobalID string
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}
var DEFAULT_TEMPLATE = `Vagrant.configure("2") do |config|
config.vm.box = "{{.BoxName}}"
{{ if ne .SyncedFolder "" -}}
config.vm.synced_folder "{{.SyncedFolder}}", "/vagrant"
{{- else -}}
config.vm.synced_folder ".", "/vagrant", disabled: true
{{- end}}
end`
type VagrantfileOptions struct {
SyncedFolder string
BoxName string
}
func (s *StepCreateVagrantfile) createVagrantfile() (string, error) {
tplPath := filepath.Join(s.OutputDir, "Vagrantfile")
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templateFile, err := os.Create(tplPath)
if err != nil {
retErr := fmt.Errorf("Error creating vagrantfile %s", err.Error())
return "", retErr
}
var tpl *template.Template
if s.Template == "" {
// Generate vagrantfile template based on our default
tpl = template.Must(template.New("VagrantTpl").Parse(DEFAULT_TEMPLATE))
} else {
// Read in the template from provided file.
tpl, err = template.ParseFiles(s.Template)
if err != nil {
return "", err
}
}
opts := &VagrantfileOptions{
SyncedFolder: s.SyncedFolder,
BoxName: s.SourceBox,
}
err = tpl.Execute(templateFile, opts)
if err != nil {
return "", err
}
abspath, err := filepath.Abs(tplPath)
if err != nil {
return "", err
}
return abspath, nil
}
func (s *StepCreateVagrantfile) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
ui := state.Get("ui").(packer.Ui)
// Skip the initialize step if we're trying to launch from a global ID.
if s.GlobalID != "" {
ui.Say("Using a global-id; skipping Vagrant init in this directory...")
return multistep.ActionContinue
}
ui.Say("Creating a Vagrantfile in the build directory...")
vagrantfilePath, err := s.createVagrantfile()
if err != nil {
state.Put("error", err)
return multistep.ActionHalt
}
log.Printf("Created vagrantfile at %s", vagrantfilePath)
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return multistep.ActionContinue
}
func (s *StepCreateVagrantfile) Cleanup(state multistep.StateBag) {
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}