go fmt

36 files changed, 101 insertions, 103 deletions

diff --git a/weed/command/filer.go b/weed/command/filer.go
index 5f0ceab48..fd9419772 100644
--- a/weed/command/filer.go
+++ b/weed/command/filer.go
@@ -5,14 +5,14 @@ import (
 	"strconv"
 	"time"
 
+	"github.com/chrislusf/seaweedfs/weed/filer2"
 	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/server"
 	"github.com/chrislusf/seaweedfs/weed/util"
 	"github.com/soheilhy/cmux"
-	"google.golang.org/grpc/reflection"
 	"google.golang.org/grpc"
-	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
-	"github.com/chrislusf/seaweedfs/weed/filer2"
+	"google.golang.org/grpc/reflection"
 )
 
 var (
diff --git a/weed/command/filer_copy.go b/weed/command/filer_copy.go
index 4c203fc94..8a754bb55 100644
--- a/weed/command/filer_copy.go
+++ b/weed/command/filer_copy.go
@@ -68,7 +68,7 @@ func runCopy(cmd *Command, args []string) bool {
 		return false
 	}
 	filerDestination := args[len(args)-1]
-	fileOrDirs := args[0: len(args)-1]
+	fileOrDirs := args[0 : len(args)-1]
 
 	filerUrl, err := url.Parse(filerDestination)
 	if err != nil {
diff --git a/weed/command/mount_std.go b/weed/command/mount_std.go
index 4908bdbff..b3f038cc2 100644
--- a/weed/command/mount_std.go
+++ b/weed/command/mount_std.go
@@ -8,9 +8,9 @@ import (
 
 	"bazil.org/fuse"
 	"bazil.org/fuse/fs"
+	"github.com/chrislusf/seaweedfs/weed/filesys"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/util"
-	"github.com/chrislusf/seaweedfs/weed/filesys"
 )
 
 func runMount(cmd *Command, args []string) bool {
diff --git a/weed/filer2/abstract_sql/abstract_sql_store.go b/weed/filer2/abstract_sql/abstract_sql_store.go
index e924fa16a..aa3b82c5b 100644
--- a/weed/filer2/abstract_sql/abstract_sql_store.go
+++ b/weed/filer2/abstract_sql/abstract_sql_store.go
@@ -1,8 +1,8 @@
 package abstract_sql
 
 import (
-	"fmt"
 	"database/sql"
+	"fmt"
 
 	"github.com/chrislusf/seaweedfs/weed/filer2"
 	"github.com/chrislusf/seaweedfs/weed/glog"
diff --git a/weed/filer2/cassandra/cassandra_store.go b/weed/filer2/cassandra/cassandra_store.go
index 316b6cce0..a1e63b87d 100644
--- a/weed/filer2/cassandra/cassandra_store.go
+++ b/weed/filer2/cassandra/cassandra_store.go
@@ -2,9 +2,9 @@ package cassandra
 
 import (
 	"fmt"
-	"github.com/gocql/gocql"
 	"github.com/chrislusf/seaweedfs/weed/filer2"
 	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/gocql/gocql"
 	"github.com/spf13/viper"
 )
 
diff --git a/weed/filer2/configuration.go b/weed/filer2/configuration.go
index 16c0f3fd0..46ed9e056 100644
--- a/weed/filer2/configuration.go
+++ b/weed/filer2/configuration.go
@@ -3,8 +3,8 @@ package filer2
 import (
 	"os"
 
-	"github.com/spf13/viper"
 	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/spf13/viper"
 )
 
 const (
@@ -20,12 +20,11 @@ enabled = false
 enabled = false
 dir = "."					# directory to store level db files
 
-[mysql]
+####################################################
 # multiple filers on shared storage, fairly scalable
-#
-# need to choose or create a database.
-# need to manually create a table "filemeta".
-#
+####################################################
+
+[mysql]
 # CREATE TABLE IF NOT EXISTS filemeta (
 #   dirhash     BIGINT        COMMENT 'first 64 bits of MD5 hash value of directory field',
 #   name        VARCHAR(1000) COMMENT 'directory or file name',
@@ -33,7 +32,6 @@ dir = "."					# directory to store level db files
 #   meta        BLOB,
 #   PRIMARY KEY (dirhash, name)
 # ) DEFAULT CHARSET=utf8;
-#
 enabled = true
 hostname = "localhost"
 port = 3306
@@ -90,10 +88,10 @@ var (
 func (f *Filer) LoadConfiguration() {
 
 	// find a filer store
-	viper.SetConfigName("filer")            // name of config file (without extension)
-	viper.AddConfigPath(".")                // optionally look for config in the working directory
-	viper.AddConfigPath("$HOME/.seaweedfs") // call multiple times to add many search paths
-	viper.AddConfigPath("/etc/seaweedfs/")  // path to look for the config file in
+	viper.SetConfigName("filer")                 // name of config file (without extension)
+	viper.AddConfigPath(".")                     // optionally look for config in the working directory
+	viper.AddConfigPath("$HOME/.seaweedfs")      // call multiple times to add many search paths
+	viper.AddConfigPath("/etc/seaweedfs/")       // path to look for the config file in
 	if err := viper.ReadInConfig(); err != nil { // Handle errors reading the config file
 		glog.Fatalf("Failed to load filer.toml file from current directory, or $HOME/.seaweedfs/, or /etc/seaweedfs/" +
 			"\n\nPlease follow this example and add a filer.toml file to " +
diff --git a/weed/filer2/entry.go b/weed/filer2/entry.go
index f741d4bb3..cf7ad08aa 100644
--- a/weed/filer2/entry.go
+++ b/weed/filer2/entry.go
@@ -15,7 +15,7 @@ type Attr struct {
 	Gid    uint32      // group gid
 }
 
-func (attr Attr) IsDirectory() (bool) {
+func (attr Attr) IsDirectory() bool {
 	return attr.Mode&os.ModeDir > 0
 }
 
diff --git a/weed/filer2/entry_codec.go b/weed/filer2/entry_codec.go
index 7fafea3e3..8019b2193 100644
--- a/weed/filer2/entry_codec.go
+++ b/weed/filer2/entry_codec.go
@@ -4,9 +4,9 @@ import (
 	"os"
 	"time"
 
+	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/gogo/protobuf/proto"
-	"fmt"
 )
 
 func (entry *Entry) EncodeAttributesAndChunks() ([]byte, error) {
@@ -23,7 +23,7 @@ func (entry *Entry) EncodeAttributesAndChunks() ([]byte, error) {
 	return proto.Marshal(message)
 }
 
-func (entry *Entry) DecodeAttributesAndChunks(blob []byte) (error) {
+func (entry *Entry) DecodeAttributesAndChunks(blob []byte) error {
 
 	message := &filer_pb.Entry{}
 
diff --git a/weed/filer2/filechunks.go b/weed/filer2/filechunks.go
index 5877f2f71..86b1a85b5 100644
--- a/weed/filer2/filechunks.go
+++ b/weed/filer2/filechunks.go
@@ -1,9 +1,9 @@
 package filer2
 
 import (
-	"sort"
 	"log"
 	"math"
+	"sort"
 
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 )
diff --git a/weed/filer2/filechunks_test.go b/weed/filer2/filechunks_test.go
index 033e66b1e..134bb9c19 100644
--- a/weed/filer2/filechunks_test.go
+++ b/weed/filer2/filechunks_test.go
@@ -1,8 +1,8 @@
 package filer2
 
 import (
-	"testing"
 	"log"
+	"testing"
 
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 )
@@ -163,9 +163,9 @@ func TestChunksReading(t *testing.T) {
 			Offset: 0,
 			Size:   250,
 			Expected: []*ChunkView{
-				{Offset: 0, Size: 100, FileId: "abc", LogicOffset:0},
-				{Offset: 0, Size: 100, FileId: "asdf", LogicOffset:100},
-				{Offset: 0, Size: 50, FileId: "fsad", LogicOffset:200},
+				{Offset: 0, Size: 100, FileId: "abc", LogicOffset: 0},
+				{Offset: 0, Size: 100, FileId: "asdf", LogicOffset: 100},
+				{Offset: 0, Size: 50, FileId: "fsad", LogicOffset: 200},
 			},
 		},
 		// case 1: updates overwrite full chunks
@@ -177,7 +177,7 @@ func TestChunksReading(t *testing.T) {
 			Offset: 50,
 			Size:   100,
 			Expected: []*ChunkView{
-				{Offset: 50, Size: 100, FileId: "asdf", LogicOffset:50},
+				{Offset: 50, Size: 100, FileId: "asdf", LogicOffset: 50},
 			},
 		},
 		// case 2: updates overwrite part of previous chunks
@@ -189,8 +189,8 @@ func TestChunksReading(t *testing.T) {
 			Offset: 25,
 			Size:   50,
 			Expected: []*ChunkView{
-				{Offset: 25, Size: 25, FileId: "asdf", LogicOffset:25},
-				{Offset: 0, Size: 25, FileId: "abc", LogicOffset:50},
+				{Offset: 25, Size: 25, FileId: "asdf", LogicOffset: 25},
+				{Offset: 0, Size: 25, FileId: "abc", LogicOffset: 50},
 			},
 		},
 		// case 3: updates overwrite full chunks
@@ -203,8 +203,8 @@ func TestChunksReading(t *testing.T) {
 			Offset: 0,
 			Size:   200,
 			Expected: []*ChunkView{
-				{Offset: 0, Size: 50, FileId: "asdf", LogicOffset:0},
-				{Offset: 0, Size: 150, FileId: "xxxx", LogicOffset:50},
+				{Offset: 0, Size: 50, FileId: "asdf", LogicOffset: 0},
+				{Offset: 0, Size: 150, FileId: "xxxx", LogicOffset: 50},
 			},
 		},
 		// case 4: updates far away from prev chunks
@@ -217,7 +217,7 @@ func TestChunksReading(t *testing.T) {
 			Offset: 0,
 			Size:   400,
 			Expected: []*ChunkView{
-				{Offset: 0, Size: 200, FileId: "asdf", LogicOffset:0},
+				{Offset: 0, Size: 200, FileId: "asdf", LogicOffset: 0},
 				// {Offset: 0, Size: 150, FileId: "xxxx"}, // missing intervals should not happen
 			},
 		},
@@ -232,8 +232,8 @@ func TestChunksReading(t *testing.T) {
 			Offset: 0,
 			Size:   220,
 			Expected: []*ChunkView{
-				{Offset: 0, Size: 200, FileId: "asdf", LogicOffset:0},
-				{Offset: 0, Size: 20, FileId: "abc", LogicOffset:200},
+				{Offset: 0, Size: 200, FileId: "asdf", LogicOffset: 0},
+				{Offset: 0, Size: 20, FileId: "abc", LogicOffset: 200},
 			},
 		},
 		// case 6: same updates
@@ -246,7 +246,7 @@ func TestChunksReading(t *testing.T) {
 			Offset: 0,
 			Size:   100,
 			Expected: []*ChunkView{
-				{Offset: 0, Size: 100, FileId: "abc", LogicOffset:0},
+				{Offset: 0, Size: 100, FileId: "abc", LogicOffset: 0},
 			},
 		},
 		// case 7: edge cases
@@ -259,8 +259,8 @@ func TestChunksReading(t *testing.T) {
 			Offset: 0,
 			Size:   200,
 			Expected: []*ChunkView{
-				{Offset: 0, Size: 100, FileId: "abc", LogicOffset:0},
-				{Offset: 0, Size: 100, FileId: "asdf", LogicOffset:100},
+				{Offset: 0, Size: 100, FileId: "abc", LogicOffset: 0},
+				{Offset: 0, Size: 100, FileId: "asdf", LogicOffset: 100},
 			},
 		},
 	}
diff --git a/weed/filer2/filer.go b/weed/filer2/filer.go
index 35d69b32e..f182adb13 100644
--- a/weed/filer2/filer.go
+++ b/weed/filer2/filer.go
@@ -3,12 +3,12 @@ package filer2
 import (
 	"fmt"
 
+	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/karlseguin/ccache"
-	"strings"
+	"os"
 	"path/filepath"
+	"strings"
 	"time"
-	"os"
-	"github.com/chrislusf/seaweedfs/weed/glog"
 )
 
 type Filer struct {
@@ -24,15 +24,15 @@ func NewFiler(master string) *Filer {
 	}
 }
 
-func (f *Filer) SetStore(store FilerStore) () {
+func (f *Filer) SetStore(store FilerStore) {
 	f.store = store
 }
 
-func (f *Filer) DisableDirectoryCache() () {
+func (f *Filer) DisableDirectoryCache() {
 	f.directoryCache = nil
 }
 
-func (f *Filer) CreateEntry(entry *Entry) (error) {
+func (f *Filer) CreateEntry(entry *Entry) error {
 
 	dirParts := strings.Split(string(entry.FullPath), "/")
 
@@ -94,11 +94,11 @@ func (f *Filer) CreateEntry(entry *Entry) (error) {
 	}
 
 	/*
-	if !hasWritePermission(lastDirectoryEntry, entry) {
-		glog.V(0).Infof("directory %s: %v, entry: uid=%d gid=%d",
-			lastDirectoryEntry.FullPath, lastDirectoryEntry.Attr, entry.Uid, entry.Gid)
-		return fmt.Errorf("no write permission in folder %v", lastDirectoryEntry.FullPath)
-	}
+		if !hasWritePermission(lastDirectoryEntry, entry) {
+			glog.V(0).Infof("directory %s: %v, entry: uid=%d gid=%d",
+				lastDirectoryEntry.FullPath, lastDirectoryEntry.Attr, entry.Uid, entry.Gid)
+			return fmt.Errorf("no write permission in folder %v", lastDirectoryEntry.FullPath)
+		}
 	*/
 
 	if err := f.store.InsertEntry(entry); err != nil {
@@ -135,12 +135,12 @@ func (f *Filer) DeleteEntry(p FullPath) (fileEntry *Entry, err error) {
 
 func (f *Filer) ListDirectoryEntries(p FullPath, startFileName string, inclusive bool, limit int) ([]*Entry, error) {
 	if strings.HasSuffix(string(p), "/") && len(p) > 1 {
-		p = p[0:len(p)-1]
+		p = p[0 : len(p)-1]
 	}
 	return f.store.ListDirectoryEntries(p, startFileName, inclusive, limit)
 }
 
-func (f *Filer) cacheGetDirectory(dirpath string) (*Entry) {
+func (f *Filer) cacheGetDirectory(dirpath string) *Entry {
 	if f.directoryCache == nil {
 		return nil
 	}
diff --git a/weed/filer2/filerstore.go b/weed/filer2/filerstore.go
index b9f7d1198..a5cd3352e 100644
--- a/weed/filer2/filerstore.go
+++ b/weed/filer2/filerstore.go
@@ -7,8 +7,8 @@ import (
 
 type FilerStore interface {
 	GetName() string
-	Initialize(viper *viper.Viper) (error)
-	InsertEntry(*Entry) (error)
+	Initialize(viper *viper.Viper) error
+	InsertEntry(*Entry) error
 	UpdateEntry(*Entry) (err error)
 	FindEntry(FullPath) (entry *Entry, err error)
 	DeleteEntry(FullPath) (fileEntry *Entry, err error)
diff --git a/weed/filer2/fullpath.go b/weed/filer2/fullpath.go
index 20e42e9b9..be6e34431 100644
--- a/weed/filer2/fullpath.go
+++ b/weed/filer2/fullpath.go
@@ -25,7 +25,7 @@ func (fp FullPath) DirAndName() (string, string) {
 	return dir[:len(dir)-1], name
 }
 
-func (fp FullPath) Name() (string) {
+func (fp FullPath) Name() string {
 	_, name := filepath.Split(string(fp))
 	return name
 }
diff --git a/weed/filer2/leveldb/leveldb_store.go b/weed/filer2/leveldb/leveldb_store.go
index 8b2df93ac..a3125e923 100644
--- a/weed/filer2/leveldb/leveldb_store.go
+++ b/weed/filer2/leveldb/leveldb_store.go
@@ -1,15 +1,15 @@
 package leveldb
 
 import (
-	"fmt"
 	"bytes"
+	"fmt"
 
-	"github.com/syndtr/goleveldb/leveldb"
 	"github.com/chrislusf/seaweedfs/weed/filer2"
-	leveldb_util "github.com/syndtr/goleveldb/leveldb/util"
 	"github.com/chrislusf/seaweedfs/weed/glog"
-	"github.com/spf13/viper"
 	weed_util "github.com/chrislusf/seaweedfs/weed/util"
+	"github.com/spf13/viper"
+	"github.com/syndtr/goleveldb/leveldb"
+	leveldb_util "github.com/syndtr/goleveldb/leveldb/util"
 )
 
 const (
@@ -162,7 +162,7 @@ func genDirectoryKeyPrefix(fullpath filer2.FullPath, startFileName string) (keyP
 	return keyPrefix
 }
 
-func getNameFromKey(key []byte) (string) {
+func getNameFromKey(key []byte) string {
 
 	sepIndex := len(key) - 1
 	for sepIndex >= 0 && key[sepIndex] != DIR_FILE_SEPARATOR {
diff --git a/weed/filer2/leveldb/leveldb_store_test.go b/weed/filer2/leveldb/leveldb_store_test.go
index 87f77d138..896dabdc3 100644
--- a/weed/filer2/leveldb/leveldb_store_test.go
+++ b/weed/filer2/leveldb/leveldb_store_test.go
@@ -1,10 +1,10 @@
 package leveldb
 
 import (
-	"testing"
 	"github.com/chrislusf/seaweedfs/weed/filer2"
 	"io/ioutil"
 	"os"
+	"testing"
 )
 
 func TestCreateAndFind(t *testing.T) {
diff --git a/weed/filer2/memdb/memdb_store.go b/weed/filer2/memdb/memdb_store.go
index 452e4970c..098ed5dce 100644
--- a/weed/filer2/memdb/memdb_store.go
+++ b/weed/filer2/memdb/memdb_store.go
@@ -1,11 +1,11 @@
 package memdb
 
 import (
+	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/filer2"
 	"github.com/google/btree"
-	"strings"
-	"fmt"
 	"github.com/spf13/viper"
+	"strings"
 )
 
 func init() {
diff --git a/weed/filer2/memdb/memdb_store_test.go b/weed/filer2/memdb/memdb_store_test.go
index a8631f969..bd1cdfdc0 100644
--- a/weed/filer2/memdb/memdb_store_test.go
+++ b/weed/filer2/memdb/memdb_store_test.go
@@ -1,8 +1,8 @@
 package memdb
 
 import (
-	"testing"
 	"github.com/chrislusf/seaweedfs/weed/filer2"
+	"testing"
 )
 
 func TestCreateAndFind(t *testing.T) {
diff --git a/weed/filer2/mysql/mysql_store.go b/weed/filer2/mysql/mysql_store.go
index e56b961bb..475e4a642 100644
--- a/weed/filer2/mysql/mysql_store.go
+++ b/weed/filer2/mysql/mysql_store.go
@@ -1,13 +1,13 @@
 package mysql
 
 import (
-	"fmt"
 	"database/sql"
+	"fmt"
 
 	"github.com/chrislusf/seaweedfs/weed/filer2"
-	"github.com/spf13/viper"
-	_ "github.com/go-sql-driver/mysql"
 	"github.com/chrislusf/seaweedfs/weed/filer2/abstract_sql"
+	_ "github.com/go-sql-driver/mysql"
+	"github.com/spf13/viper"
 )
 
 const (
diff --git a/weed/filer2/postgres/postgres_store.go b/weed/filer2/postgres/postgres_store.go
index 19d97b443..3bec55def 100644
--- a/weed/filer2/postgres/postgres_store.go
+++ b/weed/filer2/postgres/postgres_store.go
@@ -1,13 +1,13 @@
 package postgres
 
 import (
-	"fmt"
 	"database/sql"
+	"fmt"
 
 	"github.com/chrislusf/seaweedfs/weed/filer2"
-	"github.com/spf13/viper"
-	_ "github.com/lib/pq"
 	"github.com/chrislusf/seaweedfs/weed/filer2/abstract_sql"
+	_ "github.com/lib/pq"
+	"github.com/spf13/viper"
 )
 
 const (
diff --git a/weed/filer2/redis/redis_store.go b/weed/filer2/redis/redis_store.go
index cb8381bf5..5d1f51812 100644
--- a/weed/filer2/redis/redis_store.go
+++ b/weed/filer2/redis/redis_store.go
@@ -4,8 +4,8 @@ import (
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/filer2"
 	"github.com/chrislusf/seaweedfs/weed/glog"
-	"github.com/spf13/viper"
 	"github.com/go-redis/redis"
+	"github.com/spf13/viper"
 	"sort"
 	"strings"
 )
diff --git a/weed/filesys/dir.go b/weed/filesys/dir.go
index 6406dff95..e53c4cfaf 100644
--- a/weed/filesys/dir.go
+++ b/weed/filesys/dir.go
@@ -7,12 +7,12 @@ import (
 	"path"
 	"sync"
 
-	"bazil.org/fuse/fs"
 	"bazil.org/fuse"
+	"bazil.org/fuse/fs"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
-	"time"
 	"path/filepath"
+	"time"
 )
 
 type Dir struct {
diff --git a/weed/filesys/file.go b/weed/filesys/file.go
index d63f9d62d..7ea14cc49 100644
--- a/weed/filesys/file.go
+++ b/weed/filesys/file.go
@@ -1,15 +1,15 @@
 package filesys
 
 import (
-	"context"
 	"bazil.org/fuse"
 	"bazil.org/fuse/fs"
+	"context"
+	"github.com/chrislusf/seaweedfs/weed/filer2"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
-	"path/filepath"
 	"os"
+	"path/filepath"
 	"time"
-	"github.com/chrislusf/seaweedfs/weed/filer2"
 )
 
 var _ = fs.Node(&File{})
diff --git a/weed/filesys/filehandle.go b/weed/filesys/filehandle.go
index d9dc6795e..81aca42a4 100644
--- a/weed/filesys/filehandle.go
+++ b/weed/filesys/filehandle.go
@@ -1,19 +1,19 @@
 package filesys
 
 import (
+	"bazil.org/fuse"
 	"bazil.org/fuse/fs"
+	"bytes"
+	"context"
 	"fmt"
-	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/filer2"
-	"context"
 	"github.com/chrislusf/seaweedfs/weed/glog"
-	"bazil.org/fuse"
-	"bytes"
 	"github.com/chrislusf/seaweedfs/weed/operation"
-	"time"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"github.com/chrislusf/seaweedfs/weed/util"
 	"strings"
 	"sync"
-	"github.com/chrislusf/seaweedfs/weed/util"
+	"time"
 )
 
 type FileHandle struct {
@@ -32,6 +32,7 @@ type FileHandle struct {
 }
 
 var _ = fs.Handle(&FileHandle{})
+
 // var _ = fs.HandleReadAller(&FileHandle{})
 var _ = fs.HandleReader(&FileHandle{})
 var _ = fs.HandleFlusher(&FileHandle{})
diff --git a/weed/filesys/wfs.go b/weed/filesys/wfs.go
index 9f8f4649a..1b843e2d7 100644
--- a/weed/filesys/wfs.go
+++ b/weed/filesys/wfs.go
@@ -3,9 +3,9 @@ package filesys
 import (
 	"bazil.org/fuse/fs"
 	"fmt"
-	"google.golang.org/grpc"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/karlseguin/ccache"
+	"google.golang.org/grpc"
 )
 
 type WFS struct {
@@ -15,7 +15,7 @@ type WFS struct {
 
 func NewSeaweedFileSystem(filer string) *WFS {
 	return &WFS{
-		filer:                     filer,
+		filer: filer,
 		listDirectoryEntriesCache: ccache.New(ccache.Configure().MaxSize(6000).ItemsToPrune(100)),
 	}
 }
diff --git a/weed/images/favicon.go b/weed/images/favicon.go
index 09504976c..2f0af200d 100644
--- a/weed/images/favicon.go
+++ b/weed/images/favicon.go
@@ -181,6 +181,7 @@ type bintree struct {
 	Func     func() (*asset, error)
 	Children map[string]*bintree
 }
+
 var _bintree = &bintree{nil, map[string]*bintree{
 	"favicon": &bintree{nil, map[string]*bintree{
 		"favicon.ico": &bintree{favicon, map[string]*bintree{}},
@@ -233,4 +234,3 @@ func _filePath(dir, name string) string {
 	cannonicalName := strings.Replace(name, "\\", "/", -1)
 	return filepath.Join(append([]string{dir}, strings.Split(cannonicalName, "/")...)...)
 }
-
diff --git a/weed/server/filer_grpc_server.go b/weed/server/filer_grpc_server.go
index ffa24a0d8..44f5320cb 100644
--- a/weed/server/filer_grpc_server.go
+++ b/weed/server/filer_grpc_server.go
@@ -1,16 +1,16 @@
 package weed_server
 
 import (
-	"fmt"
 	"context"
-	"time"
+	"fmt"
 	"os"
 	"path/filepath"
+	"time"
 
-	"github.com/chrislusf/seaweedfs/weed/operation"
-	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/filer2"
 	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/operation"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 )
 
 func (fs *FilerServer) LookupDirectoryEntry(ctx context.Context, req *filer_pb.LookupDirectoryEntryRequest) (*filer_pb.LookupDirectoryEntryResponse, error) {
diff --git a/weed/server/filer_server.go b/weed/server/filer_server.go
index 012b0afbf..a1dc91650 100644
--- a/weed/server/filer_server.go
+++ b/weed/server/filer_server.go
@@ -7,10 +7,6 @@ import (
 	"sync"
 	"time"
 
-	"github.com/chrislusf/seaweedfs/weed/glog"
-	"github.com/chrislusf/seaweedfs/weed/security"
-	"github.com/chrislusf/seaweedfs/weed/storage"
-	"github.com/chrislusf/seaweedfs/weed/util"
 	"github.com/chrislusf/seaweedfs/weed/filer2"
 	_ "github.com/chrislusf/seaweedfs/weed/filer2/cassandra"
 	_ "github.com/chrislusf/seaweedfs/weed/filer2/leveldb"
@@ -18,6 +14,10 @@ import (
 	_ "github.com/chrislusf/seaweedfs/weed/filer2/mysql"
 	_ "github.com/chrislusf/seaweedfs/weed/filer2/postgres"
 	_ "github.com/chrislusf/seaweedfs/weed/filer2/redis"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/security"
+	"github.com/chrislusf/seaweedfs/weed/storage"
+	"github.com/chrislusf/seaweedfs/weed/util"
 )
 
 type FilerServer struct {
diff --git a/weed/server/filer_server_handlers_admin.go b/weed/server/filer_server_handlers_admin.go
index f3cf2754f..91a0e6fa0 100644
--- a/weed/server/filer_server_handlers_admin.go
+++ b/weed/server/filer_server_handlers_admin.go
@@ -3,10 +3,10 @@ package weed_server
 import (
 	"net/http"
 
-	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/filer2"
-	"strconv"
+	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
+	"strconv"
 	"time"
 )
 
diff --git a/weed/server/filer_server_handlers_read.go b/weed/server/filer_server_handlers_read.go
index e451a81de..782ed55f1 100644
--- a/weed/server/filer_server_handlers_read.go
+++ b/weed/server/filer_server_handlers_read.go
@@ -7,11 +7,11 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/chrislusf/seaweedfs/weed/filer2"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/operation"
 	ui "github.com/chrislusf/seaweedfs/weed/server/filer_ui"
 	"github.com/chrislusf/seaweedfs/weed/util"
-	"github.com/chrislusf/seaweedfs/weed/filer2"
 )
 
 // listDirectoryHandler lists directories and folers under a directory
diff --git a/weed/server/filer_server_handlers_write.go b/weed/server/filer_server_handlers_write.go
index 9d5c620de..78028051e 100644
--- a/weed/server/filer_server_handlers_write.go
+++ b/weed/server/filer_server_handlers_write.go
@@ -17,13 +17,12 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/chrislusf/seaweedfs/weed/filer"
+	"github.com/chrislusf/seaweedfs/weed/filer2"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/operation"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/storage"
 	"github.com/chrislusf/seaweedfs/weed/util"
-	"github.com/chrislusf/seaweedfs/weed/filer2"
-	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"time"
 )
 
diff --git a/weed/server/filer_ui/breadcrumb.go b/weed/server/filer_ui/breadcrumb.go
index 146b6c6c4..d056a4b25 100644
--- a/weed/server/filer_ui/breadcrumb.go
+++ b/weed/server/filer_ui/breadcrumb.go
@@ -1,8 +1,8 @@
 package master_ui
 
 import (
-	"strings"
 	"path/filepath"
+	"strings"
 )
 
 type Breadcrumb struct {
diff --git a/weed/server/raft_server.go b/weed/server/raft_server.go
index 591bc7caf..61adcdc59 100644
--- a/weed/server/raft_server.go
+++ b/weed/server/raft_server.go
@@ -198,7 +198,7 @@ func postFollowingOneRedirect(target string, contentType string, b bytes.Buffer)
 	reply := string(data)
 
 	if strings.HasPrefix(reply, "\"http") {
-		urlStr := reply[1: len(reply)-1]
+		urlStr := reply[1 : len(reply)-1]
 
 		glog.V(0).Infoln("Post redirected to ", urlStr)
 		resp2, err2 := http.Post(urlStr, contentType, backupReader)
diff --git a/weed/server/volume_server_handlers_admin.go b/weed/server/volume_server_handlers_admin.go
index 79bb89756..f66ab2306 100644
--- a/weed/server/volume_server_handlers_admin.go
+++ b/weed/server/volume_server_handlers_admin.go
@@ -8,8 +8,8 @@ import (
 
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/stats"
-	"github.com/chrislusf/seaweedfs/weed/util"
 	"github.com/chrislusf/seaweedfs/weed/storage"
+	"github.com/chrislusf/seaweedfs/weed/util"
 )
 
 func (vs *VolumeServer) statusHandler(w http.ResponseWriter, r *http.Request) {
diff --git a/weed/server/volume_server_handlers_ui.go b/weed/server/volume_server_handlers_ui.go
index 7923c95c0..6fc775a6d 100644
--- a/weed/server/volume_server_handlers_ui.go
+++ b/weed/server/volume_server_handlers_ui.go
@@ -5,9 +5,9 @@ import (
 	"path/filepath"
 	"time"
 
+	ui "github.com/chrislusf/seaweedfs/weed/server/volume_server_ui"
 	"github.com/chrislusf/seaweedfs/weed/stats"
 	"github.com/chrislusf/seaweedfs/weed/util"
-	ui "github.com/chrislusf/seaweedfs/weed/server/volume_server_ui"
 )
 
 func (vs *VolumeServer) uiStatusHandler(w http.ResponseWriter, r *http.Request) {
diff --git a/weed/storage/needle_map_memory.go b/weed/storage/needle_map_memory.go
index 6da4bf82b..261486cf8 100644
--- a/weed/storage/needle_map_memory.go
+++ b/weed/storage/needle_map_memory.go
@@ -86,7 +86,7 @@ func WalkIndexFile(r *os.File, fn func(key uint64, offset, size uint32) error) e
 
 	for count > 0 && e == nil || e == io.EOF {
 		for i = 0; i+16 <= count; i += 16 {
-			key, offset, size = idxFileEntry(bytes[i: i+16])
+			key, offset, size = idxFileEntry(bytes[i : i+16])
 			if e = fn(key, offset, size); e != nil {
 				return e
 			}
diff --git a/weed/storage/volume_checking.go b/weed/storage/volume_checking.go
index 67538ebb2..5603a878b 100644
--- a/weed/storage/volume_checking.go
+++ b/weed/storage/volume_checking.go
@@ -12,7 +12,7 @@ func getActualSize(size uint32) int64 {
 	return NeedleHeaderSize + int64(size) + NeedleChecksumSize + int64(padding)
 }
 
-func CheckVolumeDataIntegrity(v *Volume, indexFile *os.File) (error) {
+func CheckVolumeDataIntegrity(v *Volume, indexFile *os.File) error {
 	var indexSize int64
 	var e error
 	if indexSize, e = verifyIndexFileIntegrity(indexFile); e != nil {