moby · creack · Jun 21, 2013 · Jun 6, 2013 · Jun 6, 2013 · Jun 6, 2013
diff --git a/FIXME b/FIXME
@@ -33,3 +33,4 @@ to put them - so we put them here :)
 * Caching after an ADD
 * entry point config
 * bring back git revision info, looks like it was lost
+* Clean up the ProgressReader api, it's a PITA to use
diff --git a/api.go b/api.go
@@ -7,15 +7,17 @@ import (
 	"github.com/dotcloud/docker/utils"
 	"github.com/gorilla/mux"
 	"io"
+	"io/ioutil"
 	"log"
 	"net"
 	"net/http"
 	"os"
+	"os/exec"
 	"strconv"
 	"strings"
 )
 
-const APIVERSION = 1.2
+const APIVERSION = 1.3
 const DEFAULTHTTPHOST string = "127.0.0.1"
 const DEFAULTHTTPPORT int = 4243
 
@@ -719,34 +721,65 @@ func postImagesGetCache(srv *Server, version float64, w http.ResponseWriter, r *
 }
 
 func postBuild(srv *Server, version float64, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
-	if err := r.ParseMultipartForm(4096); err != nil {
-		return err
+	if version < 1.3 {
+		return fmt.Errorf("Multipart upload for build is no longer supported. Please upgrade your docker client.")
 	}
-	remote := r.FormValue("t")
+	remoteURL := r.FormValue("remote")
+	repoName := r.FormValue("t")
 	tag := ""
-	if strings.Contains(remote, ":") {
-		remoteParts := strings.Split(remote, ":")
+	if strings.Contains(repoName, ":") {
+		remoteParts := strings.Split(repoName, ":")
 		tag = remoteParts[1]
-		remote = remoteParts[0]
+		repoName = remoteParts[0]
 	}
 
-	dockerfile, _, err := r.FormFile("Dockerfile")
-	if err != nil {
-		return err
-	}
+	var context io.Reader
 
-	context, _, err := r.FormFile("Context")
-	if err != nil {
-		if err != http.ErrMissingFile {
+	if remoteURL == "" {
+		context = r.Body
+	} else if utils.IsGIT(remoteURL) {
+		if !strings.HasPrefix(remoteURL, "git://") {
+			remoteURL = "https://" + remoteURL
+		}
+		root, err := ioutil.TempDir("", "docker-build-git")
+		if err != nil {
 			return err
 		}
-	}
+		defer os.RemoveAll(root)
+
+		if output, err := exec.Command("git", "clone", remoteURL, root).CombinedOutput(); err != nil {
+			return fmt.Errorf("Error trying to use git: %s (%s)", err, output)
+		}
 
+		c, err := Tar(root, Bzip2)
+		if err != nil {
+			return err
+		}
+		context = c
+	} else if utils.IsURL(remoteURL) {
+		f, err := utils.Download(remoteURL, ioutil.Discard)
+		if err != nil {
+			return err
+		}
+		defer f.Body.Close()
+		dockerFile, err := ioutil.ReadAll(f.Body)
+		if err != nil {
+			return err
+		}
+		c, err := mkBuildContext(string(dockerFile), nil)
+		if err != nil {
+			return err
+		}
+		context = c
+	}
 	b := NewBuildFile(srv, utils.NewWriteFlusher(w))
-	if id, err := b.Build(dockerfile, context); err != nil {
+	id, err := b.Build(context)
+	if err != nil {
 		fmt.Fprintf(w, "Error build: %s\n", err)
-	} else if remote != "" {
-		srv.runtime.repositories.Set(remote, tag, id, false)
+		return err
+	}
+	if repoName != "" {
+		srv.runtime.repositories.Set(repoName, tag, id, false)
 	}
 	return nil
 }

diff --git a/archive.go b/archive.go
@@ -1,7 +1,9 @@
 package docker
 
 import (
+	"archive/tar"
 	"bufio"
+	"bytes"
 	"errors"
 	"fmt"
 	"github.com/dotcloud/docker/utils"
@@ -10,6 +12,7 @@ import (
 	"os"
 	"os/exec"
 	"path"
+	"path/filepath"
 )
 
 type Archive io.Reader
@@ -160,51 +163,60 @@ func CopyWithTar(src, dst string) error {
 	if err != nil {
 		return err
 	}
-	var dstExists bool
-	dstSt, err := os.Stat(dst)
+	if !srcSt.IsDir() {
+		return CopyFileWithTar(src, dst)
+	}
+	// Create dst, copy src's content into it
+	utils.Debugf("Creating dest directory: %s", dst)
+	if err := os.MkdirAll(dst, 0700); err != nil && !os.IsExist(err) {
+		return err
+	}
+	utils.Debugf("Calling TarUntar(%s, %s)", src, dst)
+	return TarUntar(src, nil, dst)
+}
+
+// CopyFileWithTar emulates the behavior of the 'cp' command-line
+// for a single file. It copies a regular file from path `src` to
+// path `dst`, and preserves all its metadata.
+//
+// If `dst` ends with a trailing slash '/', the final destination path
+// will be `dst/base(src)`.
+func CopyFileWithTar(src, dst string) error {
+	utils.Debugf("CopyFileWithTar(%s, %s)", src, dst)
+	srcSt, err := os.Stat(src)
 	if err != nil {
-		if !os.IsNotExist(err) {
-			return err
-		}
-	} else {
-		dstExists = true
+		return err
 	}
-	// Things that can go wrong if the source is a directory
 	if srcSt.IsDir() {
-		// The destination exists and is a regular file
-		if dstExists && !dstSt.IsDir() {
-			return fmt.Errorf("Can't copy a directory over a regular file")
-		}
-		// Things that can go wrong if the source is a regular file
-	} else {
-		utils.Debugf("The destination exists, it's a directory, and doesn't end in /")
-		// The destination exists, it's a directory, and doesn't end in /
-		if dstExists && dstSt.IsDir() && dst[len(dst)-1] != '/' {
-			return fmt.Errorf("Can't copy a regular file over a directory %s |%s|", dst, dst[len(dst)-1])
-		}
+		return fmt.Errorf("Can't copy a directory")
 	}
-	// Create the destination
-	var dstDir string
-	if srcSt.IsDir() || dst[len(dst)-1] == '/' {
-		// The destination ends in /, or the source is a directory
-		//   --> dst is the holding directory and needs to be created for -C
-		dstDir = dst
-	} else {
-		// The destination doesn't end in /
-		//   --> dst is the file
-		dstDir = path.Dir(dst)
+	// Clean up the trailing /
+	if dst[len(dst)-1] == '/' {
+		dst = path.Join(dst, filepath.Base(src))
 	}
-	if !dstExists {
-		// Create the holding directory if necessary
-		utils.Debugf("Creating the holding directory %s", dstDir)
-		if err := os.MkdirAll(dstDir, 0700); err != nil && !os.IsExist(err) {
-			return err
-		}
+	// Create the holding directory if necessary
+	if err := os.MkdirAll(filepath.Dir(dst), 0700); err != nil && !os.IsExist(err) {
+		return err
 	}
-	if !srcSt.IsDir() {
-		return TarUntar(path.Dir(src), []string{path.Base(src)}, dstDir)
+	buf := new(bytes.Buffer)
+	tw := tar.NewWriter(buf)
+	hdr, err := tar.FileInfoHeader(srcSt, "")
+	if err != nil {
+		return err
+	}
+	hdr.Name = filepath.Base(dst)
+	if err := tw.WriteHeader(hdr); err != nil {
+		return err
+	}
+	srcF, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	if _, err := io.Copy(tw, srcF); err != nil {
+		return err
 	}
-	return TarUntar(src, nil, dstDir)
+	tw.Close()
+	return Untar(buf, filepath.Dir(dst))
 }
 
 // CmdStream executes a command, and returns its stdout as a stream.