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stemcell.go
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stemcell.go
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package stemcell
import (
"fmt"
boshcmd "github.com/cloudfoundry/bosh-utils/fileutil"
biproperty "github.com/cloudfoundry/bosh-utils/property"
boshsys "github.com/cloudfoundry/bosh-utils/system"
"path/filepath"
yaml "gopkg.in/yaml.v2"
)
type ExtractedStemcell interface {
Manifest() Manifest
Cleanup() error
OsAndVersion() string
SetName(string)
SetVersion(string)
SetCloudProperties(biproperty.Map)
GetExtractedPath() string
Pack(string) error
fmt.Stringer
}
type extractedStemcell struct {
manifest Manifest
extractedPath string
compressor boshcmd.Compressor
fs boshsys.FileSystem
}
func NewExtractedStemcell(
manifest Manifest,
extractedPath string,
compressor boshcmd.Compressor,
fs boshsys.FileSystem,
) ExtractedStemcell {
return &extractedStemcell{
manifest: manifest,
extractedPath: extractedPath,
compressor: compressor,
fs: fs,
}
}
func (s *extractedStemcell) Manifest() Manifest { return s.manifest }
func (s *extractedStemcell) Cleanup() error {
return s.fs.RemoveAll(s.extractedPath)
}
func (s *extractedStemcell) String() string {
return fmt.Sprintf("ExtractedStemcell{name=%s version=%s}", s.manifest.Name, s.manifest.Version)
}
func (s *extractedStemcell) OsAndVersion() string {
return fmt.Sprintf("%s/%s", s.manifest.OS, s.manifest.Version)
}
func (s *extractedStemcell) SetName(newName string) {
s.manifest.Name = newName
}
func (s *extractedStemcell) SetVersion(newVersion string) {
s.manifest.Version = newVersion
}
func (s *extractedStemcell) SetCloudProperties(newCloudProperties biproperty.Map) {
for key, value := range newCloudProperties {
s.manifest.CloudProperties[key] = value
}
}
func (s *extractedStemcell) Pack(destinationPath string) error {
defer s.Cleanup()
err := s.save()
if err != nil {
return err
}
intermediateStemcellPath, err := s.compressor.CompressFilesInDir(s.extractedPath)
if err != nil {
return err
}
return s.fs.Rename(intermediateStemcellPath, destinationPath)
}
func (s *extractedStemcell) GetExtractedPath() string {
return s.extractedPath
}
func (s *extractedStemcell) save() error {
stemcellMfPath := filepath.Join(s.extractedPath, "stemcell.MF")
contents, _ := yaml.Marshal(s.manifest)
err := s.fs.WriteFile(stemcellMfPath, contents)
if err != nil {
return err
}
return nil
}
type Manifest struct {
Name string `yaml:"name"`
Version string `yaml:"version"`
OS string `yaml:"operating_system"`
SHA1 string `yaml:"sha1"`
BoshProtocol string `yaml:"bosh_protocol"`
CloudProperties biproperty.Map `yaml:"cloud_properties"`
}