Can compile now. not working just yet.

go/filer/directory.go

@@ -11,8 +11,10 @@ type DirectoryEntry struct {
 
 type DirectoryManager interface {
 	FindDirectory(dirPath string) (DirectoryId, error)
-	ListDirectories(dirPath string) (dirNames []DirectoryEntry, err error)
+	ListDirectories(dirPath string) (dirs []DirectoryEntry, err error)
 	MakeDirectory(currentDirPath string, dirName string) (DirectoryId, error)
 	MoveUnderDirectory(oldDirPath string, newParentDirPath string) error
 	DeleteDirectory(dirPath string) error
+	//functions used by FUSE
+	FindDirectoryById(DirectoryId, error)
 }

go/filer/filer.go

@@ -5,8 +5,8 @@ import ()
 type FileId string //file id on weedfs
 
 type FileEntry struct {
-	Name string //file name without path
-	Id   FileId
+	Name string `json:"name,omitempty"` //file name without path
+	Id   FileId `json:"fid,omitempty"`
 }
 
 type Filer interface {

go/filer/operations.go

@@ -0,0 +1,58 @@
+package filer
+
+import ()
+
+import (
+	"code.google.com/p/weed-fs/go/util"
+	"encoding/json"
+	"errors"
+	_ "fmt"
+	"net/url"
+	"strconv"
+)
+
+type ListFilesResult struct {
+	Files []FileEntry
+	Error string `json:"error,omitempty"`
+}
+
+func ListFiles(server string, directoryId DirectoryId, fileName string) (*ListFilesResult, error) {
+	values := make(url.Values)
+	values.Add("directoryId", strconv.Itoa(int(directoryId)))
+	jsonBlob, err := util.Post("http://"+server+"/dir/lookup", values)
+	if err != nil {
+		return nil, err
+	}
+	var ret ListFilesResult
+	err = json.Unmarshal(jsonBlob, &ret)
+	if err != nil {
+		return nil, err
+	}
+	if ret.Error != "" {
+		return nil, errors.New(ret.Error)
+	}
+	return &ret, nil
+}
+
+type ListDirectoriesResult struct {
+	Directories []DirectoryEntry
+	Error       string `json:"error,omitempty"`
+}
+
+func ListDirectories(server string, directoryId DirectoryId) (*ListDirectoriesResult, error) {
+	values := make(url.Values)
+	values.Add("directoryId", strconv.Itoa(int(directoryId)))
+	jsonBlob, err := util.Post("http://"+server+"/dir/lookup", values)
+	if err != nil {
+		return nil, err
+	}
+	var ret ListDirectoriesResult
+	err = json.Unmarshal(jsonBlob, &ret)
+	if err != nil {
+		return nil, err
+	}
+	if ret.Error != "" {
+		return nil, errors.New(ret.Error)
+	}
+	return &ret, nil
+}

go/weed/mount.go

@@ -0,0 +1,144 @@
+package main
+
+import (
+	"bazil.org/fuse"
+	"bazil.org/fuse/fs"
+	"code.google.com/p/weed-fs/go/filer"
+	"code.google.com/p/weed-fs/go/glog"
+	"code.google.com/p/weed-fs/go/storage"
+	"code.google.com/p/weed-fs/go/util"
+	"fmt"
+	"os"
+	"os/signal"
+	"runtime"
+)
+
+type MountOptions struct {
+	filer *string
+	dir   *string
+}
+
+var (
+	mountOptions MountOptions
+)
+
+func init() {
+	cmdMount.Run = runMount // break init cycle
+	cmdMount.IsDebug = cmdMount.Flag.Bool("debug", false, "verbose debug information")
+	mountOptions.filer = cmdMount.Flag.String("filer", "localhost:8888", "weedfs filer location")
+	mountOptions.dir = cmdMount.Flag.String("dir", "", "mount weed filer to this directory")
+}
+
+var cmdMount = &Command{
+	UsageLine: "mount -filer=localhost:8888 -dir=/some/dir",
+	Short:     "mount weed filer to a directory as file system in userspace(FUSE)",
+	Long: `mount weed file system to userspace.
+  
+  Pre-requisites:
+  1) have a weed file system running
+  2) have a "weed filer" running
+  These 2 requirements can be achieved with one command "weed server -filer=true"
+
+  This uses bazil.org/fuse, whichenables writing FUSE file systems on
+  FreeBSD, Linux, and OS X.
+
+  On OS X, it requires OSXFUSE (http://osxfuse.github.com/).
+
+  `,
+}
+
+func runMount(cmd *Command, args []string) bool {
+	fmt.Printf("This is Weed File System version %s %s %s\n", util.VERSION, runtime.GOOS, runtime.GOARCH)
+	if *mountOptions.dir == "" {
+		fmt.Printf("Please specify the mount directory via \"-dir\"")
+		return false
+	}
+
+	c, err := fuse.Mount(*mountOptions.dir)
+	if err != nil {
+		glog.Fatal(err)
+		return false
+	}
+
+	signalChan := make(chan os.Signal, 1)
+	signal.Notify(signalChan, os.Interrupt)
+	go func() {
+		for _ = range signalChan {
+			// sig is a ^C, handle it
+			fuse.Unmount(*mountOptions.dir)
+			c.Close()
+			os.Exit(0)
+		}
+	}()
+
+	err = fs.Serve(c, WFS{})
+	if err != nil {
+		fuse.Unmount(*mountOptions.dir)
+	}
+
+	// check if the mount process has an error to report
+	<-c.Ready
+	if err := c.MountError; err != nil {
+		glog.Fatal(err)
+	}
+
+	return true
+}
+
+type File struct {
+	FileId filer.FileId
+	Name   string
+}
+
+func (File) Attr() fuse.Attr {
+	return fuse.Attr{Mode: 0444}
+}
+func (File) ReadAll(intr fs.Intr) ([]byte, fuse.Error) {
+	return []byte("hello, world\n"), nil
+}
+
+type Dir struct {
+	DirectoryId filer.DirectoryId
+	Name        string
+}
+
+func (dir Dir) Attr() fuse.Attr {
+	return fuse.Attr{Inode: 1, Mode: os.ModeDir | 0555}
+}
+
+func (dir Dir) Lookup(name string, intr fs.Intr) (fs.Node, fuse.Error) {
+	files_result, e := filer.ListFiles(*mountOptions.filer, dir.DirectoryId, name)
+	if e != nil {
+		return nil, fuse.ENOENT
+	}
+	if len(files_result.Files) > 0 {
+		return File{files_result.Files[0].Id, files_result.Files[0].Name}, nil
+	}
+	return nil, fmt.Errorf("File Not Found for %s", name)
+}
+
+type WFS struct{}
+
+func (WFS) Root() (fs.Node, fuse.Error) {
+	return Dir{}, nil
+}
+
+func (dir *Dir) ReadDir(intr fs.Intr) ([]fuse.Dirent, fuse.Error) {
+	ret := make([]fuse.Dirent, 0)
+	if dirs, e := filer.ListDirectories(*mountOptions.filer, dir.DirectoryId); e == nil {
+		for _, d := range dirs.Directories {
+			dirId := uint64(d.Id)
+			ret = append(ret, fuse.Dirent{Inode: dirId, Name: d.Name, Type: fuse.DT_Dir})
+		}
+	}
+	if files, e := filer.ListFiles(*mountOptions.filer, dir.DirectoryId, ""); e == nil {
+		for _, f := range files.Files {
+			if fileId, e := storage.ParseFileId(string(f.Id)); e == nil {
+				fileInode := uint64(fileId.VolumeId)<<32 + fileId.Key
+				ret = append(ret, fuse.Dirent{Inode: fileInode, Name: f.Name, Type: fuse.DT_File})
+			}
+
+		}
+	}
+	return ret, nil
+}

go/weed/weed.go

@@ -21,16 +21,17 @@ var server *string
 var commands = []*Command{
 	cmdBenchmark,
 	cmdCompact,
-	cmdFiler,
 	cmdFix,
 	cmdServer,
 	cmdMaster,
+	cmdFiler,
 	cmdUpload,
 	cmdDownload,
 	cmdShell,
 	cmdVersion,
 	cmdVolume,
 	cmdExport,
+	cmdMount,
 }
 
 var exitStatus = 0