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

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// vagrant implements the packer.PostProcessor interface and adds a
// post-processor that turns artifacts of known builders into Vagrant
// boxes.
package vagrant
import (
"fmt"
"github.com/mitchellh/mapstructure"
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"github.com/mitchellh/packer/packer"
"log"
"text/template"
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)
var builtins = map[string]string{
"mitchellh.amazonebs": "aws",
"mitchellh.virtualbox": "virtualbox",
"mitchellh.vmware": "vmware",
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}
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type Config struct {
OutputPath string `mapstructure:"output"`
}
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type PostProcessor struct {
config Config
premade map[string]packer.PostProcessor
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}
func (p *PostProcessor) Configure(raw interface{}) error {
err := mapstructure.Decode(raw, &p.config)
if err != nil {
return err
}
if p.config.OutputPath == "" {
p.config.OutputPath = "packer_{{.Provider}}.box"
}
_, err = template.New("output").Parse(p.config.OutputPath)
if err != nil {
return fmt.Errorf("output invalid template: %s", err)
}
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/*
TODO(mitchellh): We need a way to get the keys...
mapConfig, ok := raw.(map[string]interface{})
if !ok {
panic("Raw configuration not a map")
}
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errors := make([]error, 0)
for k, raw := range mapConfig {
pp := keyToPostProcessor(k)
if pp == nil {
continue
}
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if err := pp.Configure(raw); err != nil {
errors = append(errors, err)
}
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p.premade[k] = pp
}
if len(errors) > 0 {
return &packer.MultiError{errors}
}
*/
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return nil
}
func (p *PostProcessor) PostProcess(ui packer.Ui, artifact packer.Artifact) (packer.Artifact, error) {
ppName, ok := builtins[artifact.BuilderId()]
if !ok {
return nil, fmt.Errorf("Unknown artifact type, can't build box: %s", artifact.BuilderId())
}
// Use the premade PostProcessor if we have one. Otherwise, we
// create it and configure it here.
pp, ok := p.premade[ppName]
if !ok {
log.Printf("Premade post-processor for '%s' not found. Creating.", ppName)
pp = keyToPostProcessor(ppName)
if pp == nil {
return nil, fmt.Errorf("Vagrant box post-processor not found: %s", ppName)
}
config := map[string]string{"output": p.config.OutputPath}
if err := pp.Configure(config); err != nil {
return nil, err
}
}
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ui.Say(fmt.Sprintf("Creating Vagrant box for '%s' provider", ppName))
return pp.PostProcess(ui, artifact)
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}
func keyToPostProcessor(key string) packer.PostProcessor {
switch key {
case "aws":
return new(AWSBoxPostProcessor)
case "virtualbox":
return new(VBoxBoxPostProcessor)
case "vmware":
return new(VMwareBoxPostProcessor)
default:
return nil
}
}