refactoring: remove unused functions

weed/storage/needle_map.go

@@ -2,7 +2,6 @@ package storage
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"sync"
 
@@ -31,8 +30,6 @@ type NeedleMapper interface {
 	DeletedCount() int
 	MaxFileKey() NeedleId
 	IndexFileSize() uint64
-	IndexFileContent() ([]byte, error)
-	IndexFileName() string
 }
 
 type baseNeedleMapper struct {
@@ -50,10 +47,6 @@ func (nm *baseNeedleMapper) IndexFileSize() uint64 {
 	return 0
 }
 
-func (nm *baseNeedleMapper) IndexFileName() string {
-	return nm.indexFile.Name()
-}
-
 func (nm *baseNeedleMapper) appendToIndexFile(key NeedleId, offset Offset, size uint32) error {
 	bytes := needle_map.ToBytes(key, offset, size)
 
@@ -66,9 +59,3 @@ func (nm *baseNeedleMapper) appendToIndexFile(key NeedleId, offset Offset, size
 	_, err := nm.indexFile.Write(bytes)
 	return err
 }
-
-func (nm *baseNeedleMapper) IndexFileContent() ([]byte, error) {
-	nm.indexFileAccessLock.Lock()
-	defer nm.indexFileAccessLock.Unlock()
-	return ioutil.ReadFile(nm.indexFile.Name())
-}

weed/storage/volume.go

@@ -140,24 +140,6 @@ func (v *Volume) IndexFileSize() uint64 {
 	return v.nm.IndexFileSize()
 }
 
-func (v *Volume) IndexFileContent() ([]byte, error) {
-	v.dataFileAccessLock.Lock()
-	defer v.dataFileAccessLock.Unlock()
-	if v.nm == nil {
-		return nil, nil
-	}
-	return v.nm.IndexFileContent()
-}
-
-func (v *Volume) IndexFileName() string {
-	v.dataFileAccessLock.Lock()
-	defer v.dataFileAccessLock.Unlock()
-	if v.nm == nil {
-		return ""
-	}
-	return v.nm.IndexFileName()
-}
-
 // Close cleanly shuts down this volume
 func (v *Volume) Close() {
 	v.dataFileAccessLock.Lock()