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

154 lines
3.6 KiB
Go

package vagrant
import (
"fmt"
"github.com/mitchellh/packer/common"
"github.com/mitchellh/packer/packer"
"io/ioutil"
"log"
"os"
"path/filepath"
"strings"
)
type AWSBoxConfig struct {
common.PackerConfig `mapstructure:",squash"`
OutputPath string `mapstructure:"output"`
VagrantfileTemplate string `mapstructure:"vagrantfile_template"`
tpl *packer.ConfigTemplate
}
type AWSVagrantfileTemplate struct {
Images map[string]string
}
type AWSBoxPostProcessor struct {
config AWSBoxConfig
}
func (p *AWSBoxPostProcessor) Configure(raws ...interface{}) error {
md, err := common.DecodeConfig(&p.config, raws...)
if err != nil {
return err
}
p.config.tpl, err = packer.NewConfigTemplate()
if err != nil {
return err
}
p.config.tpl.UserVars = p.config.PackerUserVars
// Accumulate any errors
errs := common.CheckUnusedConfig(md)
validates := map[string]*string{
"output": &p.config.OutputPath,
"vagrantfile_template": &p.config.VagrantfileTemplate,
}
for n, ptr := range validates {
if err := p.config.tpl.Validate(*ptr); err != nil {
errs = packer.MultiErrorAppend(
errs, fmt.Errorf("Error parsing %s: %s", n, err))
}
}
if errs != nil && len(errs.Errors) > 0 {
return errs
}
return nil
}
func (p *AWSBoxPostProcessor) PostProcess(ui packer.Ui, artifact packer.Artifact) (packer.Artifact, bool, error) {
// Determine the regions...
tplData := &AWSVagrantfileTemplate{
Images: make(map[string]string),
}
for _, regions := range strings.Split(artifact.Id(), ",") {
parts := strings.Split(regions, ":")
if len(parts) != 2 {
return nil, false, fmt.Errorf("Poorly formatted artifact ID: %s", artifact.Id())
}
tplData.Images[parts[0]] = parts[1]
}
// Compile the output path
outputPath, err := p.config.tpl.Process(p.config.OutputPath, &OutputPathTemplate{
ArtifactId: artifact.Id(),
BuildName: p.config.PackerBuildName,
Provider: "aws",
})
if err != nil {
return nil, false, 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, false, err
}
defer os.RemoveAll(dir)
// Create the Vagrantfile from the template
vf, err := os.Create(filepath.Join(dir, "Vagrantfile"))
if err != nil {
return nil, false, err
}
defer vf.Close()
vagrantfileContents := defaultAWSVagrantfile
if p.config.VagrantfileTemplate != "" {
log.Printf("Using vagrantfile template: %s", p.config.VagrantfileTemplate)
f, err := os.Open(p.config.VagrantfileTemplate)
if err != nil {
err = fmt.Errorf("error opening vagrantfile template: %s", err)
return nil, false, err
}
defer f.Close()
contents, err := ioutil.ReadAll(f)
if err != nil {
err = fmt.Errorf("error reading vagrantfile template: %s", err)
return nil, false, err
}
vagrantfileContents = string(contents)
}
vagrantfileContents, err = p.config.tpl.Process(vagrantfileContents, tplData)
if err != nil {
return nil, false, fmt.Errorf("Error writing Vagrantfile: %s", err)
}
vf.Write([]byte(vagrantfileContents))
vf.Close()
// Create the metadata
metadata := map[string]string{"provider": "aws"}
if err := WriteMetadata(dir, metadata); err != nil {
return nil, false, err
}
// Compress the directory to the given output path
if err := DirToBox(outputPath, dir, ui); err != nil {
err = fmt.Errorf("error creating box: %s", err)
return nil, false, err
}
return NewArtifact("aws", outputPath), true, nil
}
var defaultAWSVagrantfile = `
Vagrant.configure("2") do |config|
config.vm.provider "aws" do |aws|
{{ range $region, $ami := .Images }}
aws.region_config "{{ $region }}", ami: "{{ $ami }}"
{{ end }}
end
end
`