Move "load" to graph/load.go

Signed-off-by: Solomon Hykes <solomon@docker.com>
This commit is contained in:
Solomon Hykes 2014-08-05 05:19:23 +00:00 committed by Tibor Vass
parent 77781440f1
commit f2029f7be1
4 changed files with 119 additions and 106 deletions

118
graph/load.go Normal file
View File

@ -0,0 +1,118 @@
package graph
import (
"encoding/json"
"io"
"io/ioutil"
"os"
"path"
"github.com/docker/docker/archive"
"github.com/docker/docker/engine"
"github.com/docker/docker/image"
"github.com/docker/docker/utils"
)
// Loads a set of images into the repository. This is the complementary of ImageExport.
// The input stream is an uncompressed tar ball containing images and metadata.
func (s *TagStore) CmdLoad(job *engine.Job) engine.Status {
tmpImageDir, err := ioutil.TempDir("", "docker-import-")
if err != nil {
return job.Error(err)
}
defer os.RemoveAll(tmpImageDir)
var (
repoTarFile = path.Join(tmpImageDir, "repo.tar")
repoDir = path.Join(tmpImageDir, "repo")
)
tarFile, err := os.Create(repoTarFile)
if err != nil {
return job.Error(err)
}
if _, err := io.Copy(tarFile, job.Stdin); err != nil {
return job.Error(err)
}
tarFile.Close()
repoFile, err := os.Open(repoTarFile)
if err != nil {
return job.Error(err)
}
if err := os.Mkdir(repoDir, os.ModeDir); err != nil {
return job.Error(err)
}
if err := archive.Untar(repoFile, repoDir, nil); err != nil {
return job.Error(err)
}
dirs, err := ioutil.ReadDir(repoDir)
if err != nil {
return job.Error(err)
}
for _, d := range dirs {
if d.IsDir() {
if err := s.recursiveLoad(job.Eng, d.Name(), tmpImageDir); err != nil {
return job.Error(err)
}
}
}
repositoriesJson, err := ioutil.ReadFile(path.Join(tmpImageDir, "repo", "repositories"))
if err == nil {
repositories := map[string]Repository{}
if err := json.Unmarshal(repositoriesJson, &repositories); err != nil {
return job.Error(err)
}
for imageName, tagMap := range repositories {
for tag, address := range tagMap {
if err := s.Set(imageName, tag, address, true); err != nil {
return job.Error(err)
}
}
}
} else if !os.IsNotExist(err) {
return job.Error(err)
}
return engine.StatusOK
}
func (s *TagStore) recursiveLoad(eng *engine.Engine, address, tmpImageDir string) error {
if err := eng.Job("image_get", address).Run(); err != nil {
utils.Debugf("Loading %s", address)
imageJson, err := ioutil.ReadFile(path.Join(tmpImageDir, "repo", address, "json"))
if err != nil {
utils.Debugf("Error reading json", err)
return err
}
layer, err := os.Open(path.Join(tmpImageDir, "repo", address, "layer.tar"))
if err != nil {
utils.Debugf("Error reading embedded tar", err)
return err
}
img, err := image.NewImgJSON(imageJson)
if err != nil {
utils.Debugf("Error unmarshalling json", err)
return err
}
if img.Parent != "" {
if !s.graph.Exists(img.Parent) {
if err := s.recursiveLoad(eng, img.Parent, tmpImageDir); err != nil {
return err
}
}
}
if err := s.graph.Register(imageJson, layer, img); err != nil {
return err
}
}
utils.Debugf("Completed processing %s", address)
return nil
}

View File

@ -19,6 +19,7 @@ func (s *TagStore) Install(eng *engine.Engine) error {
eng.Register("history", s.CmdHistory)
eng.Register("images", s.CmdImages)
eng.Register("viz", s.CmdViz)
eng.Register("load", s.CmdLoad)
return nil
}

View File

@ -5,7 +5,6 @@
package server
import (
"encoding/json"
"fmt"
"io"
"io/ioutil"
@ -108,110 +107,6 @@ func (srv *Server) Build(job *engine.Job) engine.Status {
return engine.StatusOK
}
// Loads a set of images into the repository. This is the complementary of ImageExport.
// The input stream is an uncompressed tar ball containing images and metadata.
func (srv *Server) ImageLoad(job *engine.Job) engine.Status {
tmpImageDir, err := ioutil.TempDir("", "docker-import-")
if err != nil {
return job.Error(err)
}
defer os.RemoveAll(tmpImageDir)
var (
repoTarFile = path.Join(tmpImageDir, "repo.tar")
repoDir = path.Join(tmpImageDir, "repo")
)
tarFile, err := os.Create(repoTarFile)
if err != nil {
return job.Error(err)
}
if _, err := io.Copy(tarFile, job.Stdin); err != nil {
return job.Error(err)
}
tarFile.Close()
repoFile, err := os.Open(repoTarFile)
if err != nil {
return job.Error(err)
}
if err := os.Mkdir(repoDir, os.ModeDir); err != nil {
return job.Error(err)
}
if err := archive.Untar(repoFile, repoDir, nil); err != nil {
return job.Error(err)
}
dirs, err := ioutil.ReadDir(repoDir)
if err != nil {
return job.Error(err)
}
for _, d := range dirs {
if d.IsDir() {
if err := srv.recursiveLoad(job.Eng, d.Name(), tmpImageDir); err != nil {
return job.Error(err)
}
}
}
repositoriesJson, err := ioutil.ReadFile(path.Join(tmpImageDir, "repo", "repositories"))
if err == nil {
repositories := map[string]graph.Repository{}
if err := json.Unmarshal(repositoriesJson, &repositories); err != nil {
return job.Error(err)
}
for imageName, tagMap := range repositories {
for tag, address := range tagMap {
if err := srv.daemon.Repositories().Set(imageName, tag, address, true); err != nil {
return job.Error(err)
}
}
}
} else if !os.IsNotExist(err) {
return job.Error(err)
}
return engine.StatusOK
}
func (srv *Server) recursiveLoad(eng *engine.Engine, address, tmpImageDir string) error {
if err := eng.Job("image_get", address).Run(); err != nil {
utils.Debugf("Loading %s", address)
imageJson, err := ioutil.ReadFile(path.Join(tmpImageDir, "repo", address, "json"))
if err != nil {
utils.Debugf("Error reading json", err)
return err
}
layer, err := os.Open(path.Join(tmpImageDir, "repo", address, "layer.tar"))
if err != nil {
utils.Debugf("Error reading embedded tar", err)
return err
}
img, err := image.NewImgJSON(imageJson)
if err != nil {
utils.Debugf("Error unmarshalling json", err)
return err
}
if img.Parent != "" {
if !srv.daemon.Graph().Exists(img.Parent) {
if err := srv.recursiveLoad(eng, img.Parent, tmpImageDir); err != nil {
return err
}
}
}
if err := srv.daemon.Graph().Register(imageJson, layer, img); err != nil {
return err
}
}
utils.Debugf("Completed processing %s", address)
return nil
}
func (srv *Server) ImageTag(job *engine.Job) engine.Status {
if len(job.Args) != 2 && len(job.Args) != 3 {
return job.Errorf("Usage: %s IMAGE REPOSITORY [TAG]\n", job.Name)

View File

@ -89,7 +89,6 @@ func InitServer(job *engine.Job) engine.Status {
"tag": srv.ImageTag, // FIXME merge with "image_tag"
"info": srv.DockerInfo,
"log": srv.Log,
"load": srv.ImageLoad,
"build": srv.Build,
"pull": srv.ImagePull,
"import": srv.ImageImport,