packer-cn/post-processor/vagrant/virtualbox.go

164 lines
3.5 KiB
Go

package vagrant
import (
"errors"
"fmt"
"github.com/mitchellh/mapstructure"
"github.com/mitchellh/packer/packer"
"io"
"io/ioutil"
"log"
"os"
"path/filepath"
"regexp"
"strings"
"text/template"
)
type VBoxBoxConfig struct {
OutputPath string `mapstructure:"output"`
VagrantfileTemplate string `mapstructure:"vagrantfile_template"`
}
type VBoxVagrantfileTemplate struct {
BaseMacAddress string
}
type VBoxBoxPostProcessor struct {
config VBoxBoxConfig
}
func (p *VBoxBoxPostProcessor) Configure(raw interface{}) error {
err := mapstructure.Decode(raw, &p.config)
if err != nil {
return err
}
return nil
}
func (p *VBoxBoxPostProcessor) PostProcess(ui packer.Ui, artifact packer.Artifact) (packer.Artifact, error) {
var err error
tplData := &VBoxVagrantfileTemplate{}
tplData.BaseMacAddress, err = p.findBaseMacAddress(artifact)
if err != nil {
return nil, err
}
// Compile the output path
outputPath, err := ProcessOutputPath(p.config.OutputPath, "virtualbox", artifact)
if err != nil {
return nil, err
}
// Create a temporary directory for us to build the contents of the box in
dir, err := ioutil.TempDir("", "packer")
if err != nil {
return nil, err
}
defer os.RemoveAll(dir)
// Copy all of the original contents into the temporary directory
for _, path := range artifact.Files() {
ui.Message(fmt.Sprintf("Copying: %s", path))
src, err := os.Open(path)
if err != nil {
return nil, err
}
defer src.Close()
dst, err := os.Create(filepath.Join(dir, filepath.Base(path)))
if err != nil {
return nil, err
}
defer dst.Close()
if _, err := io.Copy(dst, src); err != nil {
return nil, err
}
}
// Create the Vagrantfile from the template
vf, err := os.Create(filepath.Join(dir, "Vagrantfile"))
if err != nil {
return nil, err
}
defer vf.Close()
vagrantfileContents := defaultVBoxVagrantfile
if p.config.VagrantfileTemplate != "" {
f, err := os.Open(p.config.VagrantfileTemplate)
if err != nil {
return nil, err
}
defer f.Close()
contents, err := ioutil.ReadAll(f)
if err != nil {
return nil, err
}
vagrantfileContents = string(contents)
}
t := template.Must(template.New("vagrantfile").Parse(vagrantfileContents))
t.Execute(vf, tplData)
vf.Close()
// Create the metadata
metadata := map[string]string{"provider": "virtualbox"}
if err := WriteMetadata(dir, metadata); err != nil {
return nil, err
}
// Compress the directory to the given output path
ui.Message(fmt.Sprintf("Compressing box..."))
if err := DirToBox(outputPath, dir); err != nil {
return nil, err
}
return NewArtifact("virtualbox", outputPath), nil
}
func (p *VBoxBoxPostProcessor) findBaseMacAddress(a packer.Artifact) (string, error) {
log.Println("Looking for OVF for base mac address...")
var ovf string
for _, f := range a.Files() {
if strings.HasSuffix(f, ".ovf") {
log.Printf("OVF found: %s", f)
ovf = f
break
}
}
if ovf == "" {
return "", errors.New("ovf file couldn't be found")
}
f, err := os.Open(ovf)
if err != nil {
return "", err
}
defer f.Close()
data, err := ioutil.ReadAll(f)
if err != nil {
return "", err
}
re := regexp.MustCompile(`<Adapter slot="0".+?MACAddress="(.+?)"`)
matches := re.FindSubmatch(data)
if matches == nil {
return "", errors.New("can't find base mac address in OVF")
}
log.Printf("Base mac address: %s", string(matches[1]))
return string(matches[1]), nil
}
var defaultVBoxVagrantfile = `
Vagrant.configure("2") do |config|
config.vm.base_mac = "{{ .BaseMacAddress }}"
end
`