easier for client to delete file

go/operation/delete_content.go

@@ -2,9 +2,24 @@ package operation
 
 import (
 	"code.google.com/p/weed-fs/go/glog"
+	"code.google.com/p/weed-fs/go/storage"
 	"net/http"
 )
 
+func DeleteFile(server string, fileId string) (error) {
+	fid, parseErr := storage.ParseFileId(fileId)
+	if parseErr != nil {
+		return parseErr
+	}
+	lookup, lookupError := Lookup(server,fid.VolumeId)
+	if lookupError != nil {
+	  return lookupError
+	}
+	if len(lookup.Locations) == 0 {
+	  return nil
+	}
+	return Delete("http://"+lookup.Locations[0].PublicUrl+"/"+fileId)
+}
 func Delete(url string) error {
 	req, err := http.NewRequest("DELETE", url, nil)
 	if err != nil {

go/storage/file_id.go

@@ -1,10 +1,11 @@
 package storage
 
 import (
+	"code.google.com/p/weed-fs/go/glog"
 	"code.google.com/p/weed-fs/go/util"
 	"encoding/hex"
+	"errors"
 	"strings"
-  "code.google.com/p/weed-fs/go/glog"
 )
 
 type FileId struct {
@@ -16,16 +17,16 @@ type FileId struct {
 func NewFileId(VolumeId VolumeId, Key uint64, Hashcode uint32) *FileId {
 	return &FileId{VolumeId: VolumeId, Key: Key, Hashcode: Hashcode}
 }
-func ParseFileId(fid string) *FileId {
+func ParseFileId(fid string) (*FileId, error) {
 	a := strings.Split(fid, ",")
 	if len(a) != 2 {
-		glog.V(1).Infoln("Invalid fid", fid, ", split length", len(a))
+		glog.V(1).Infoln("Invalid fid ", fid, ", split length ", len(a))
-		return nil
+		return nil, errors.New("Invalid fid " + fid)
 	}
 	vid_string, key_hash_string := a[0], a[1]
 	volumeId, _ := NewVolumeId(vid_string)
 	key, hash := ParseKeyHash(key_hash_string)
-	return &FileId{VolumeId: volumeId, Key: key, Hashcode: hash}
+	return &FileId{VolumeId: volumeId, Key: key, Hashcode: hash}, nil
 }
 func (n *FileId) String() string {
 	bytes := make([]byte, 12)

go/storage/needle.go

@@ -3,7 +3,6 @@ package storage
 import (
 	"code.google.com/p/weed-fs/go/util"
 	"encoding/hex"
-	"errors"
 	"io/ioutil"
 	"code.google.com/p/weed-fs/go/glog"
 	"mime"
@@ -54,10 +53,8 @@ func ParseUpload(r *http.Request) (fileName string, data []byte, mimeType string
 	fileName = part.FileName()
 	if fileName != "" {
 		fileName = path.Base(fileName)
-	} else {
-		e = errors.New("No file found!")
-		return
 	}
+
 	data, e = ioutil.ReadAll(part)
 	if e != nil {
 		glog.V(0).Infoln("Reading Content [ERROR]", e)