1 files changed, 0 insertions, 238 deletions
diff --git a/go/storage/cdb_map.go b/go/storage/cdb_map.go
deleted file mode 100644
index 8b70a1fd3..000000000
--- a/go/storage/cdb_map.go
+++ /dev/null
@@ -1,238 +0,0 @@
-package storage
-
-import (
-	"encoding/json"
-	"errors"
-	"fmt"
-	"os"
-	"path/filepath"
-
-	"github.com/chrislusf/weed-fs/go/util"
-	"github.com/tgulacsi/go-cdb"
-)
-
-// CDB-backed read-only needle map
-type cdbMap struct {
-	c1, c2   *cdb.Cdb
-	fn1, fn2 string
-	mapMetric
-}
-
-const maxCdbRecCount = 100000000
-
-var errReadOnly = errors.New("cannot modify a read-only map")
-
-// opens the cdb file(s) (base.cdb OR base.1.cdb AND base.2.cdb)
-// in case of two files, the metric (at key 'M') must be in base.2.cdb
-func OpenCdbMap(fileName string) (m *cdbMap, err error) {
-	m = new(cdbMap)
-	if m.c1, err = cdb.Open(fileName); err == nil {
-		m.fn1 = fileName
-		err = getMetric(m.c1, &m.mapMetric)
-		return
-	}
-	if os.IsNotExist(err) {
-		bn, ext := baseFilename(fileName)
-		m.fn1 = bn + ".1" + ext
-		if m.c1, err = cdb.Open(m.fn1); err != nil {
-			return nil, err
-		}
-		m.fn2 = bn + ".2" + ext
-		if m.c2, err = cdb.Open(m.fn2); err != nil {
-			return nil, err
-		}
-		err = getMetric(m.c2, &m.mapMetric)
-		return
-	}
-	return nil, err
-}
-
-func (m *cdbMap) Put(key uint64, offset uint32, size uint32) (int, error) {
-	return -1, errReadOnly
-}
-func (m *cdbMap) Delete(key uint64) error {
-	return errReadOnly
-}
-
-func (m *cdbMap) Close() {
-	if m.c2 != nil {
-		m.c2.Close()
-		m.c2 = nil
-	}
-	if m.c1 != nil {
-		m.c1.Close()
-		m.c1 = nil
-	}
-}
-
-func (m *cdbMap) Destroy() error {
-	return errors.New("Can not delete readonly volumes")
-}
-
-func (m cdbMap) ContentSize() uint64 {
-	return m.FileByteCounter
-}
-func (m cdbMap) DeletedSize() uint64 {
-	return m.DeletionByteCounter
-}
-func (m cdbMap) FileCount() int {
-	return m.FileCounter
-}
-func (m *cdbMap) DeletedCount() int {
-	return m.DeletionCounter
-}
-func (m *cdbMap) MaxFileKey() uint64 {
-	return m.MaximumFileKey
-}
-
-func getMetric(c *cdb.Cdb, m *mapMetric) error {
-	data, err := c.Data([]byte{'M'})
-	if err != nil {
-		return err
-	}
-	return json.Unmarshal(data, m)
-}
-
-func (m cdbMap) Get(key uint64) (element *NeedleValue, ok bool) {
-	var (
-		data []byte
-		k    = make([]byte, 8)
-		err  error
-	)
-	util.Uint64toBytes(k, key)
-	if data, err = m.c1.Data(k); err != nil || data == nil {
-		if m.c2 == nil {
-			return nil, false
-		}
-		if data, err = m.c2.Data(k); err != nil || data == nil {
-			return nil, false
-		}
-	}
-	return &NeedleValue{Key: Key(key), Offset: util.BytesToUint32(data[:4]),
-		Size: util.BytesToUint32(data[4:])}, true
-}
-
-func (m cdbMap) Visit(visit func(NeedleValue) error) (err error) {
-	fh, err := os.Open(m.fn1)
-	if err != nil {
-		return fmt.Errorf("cannot open %s: %s", m.fn1, err)
-	}
-	defer fh.Close()
-	walk := func(elt cdb.Element) error {
-		if len(elt.Key) != 8 {
-			return nil
-		}
-		return visit(NeedleValue{Key: Key(util.BytesToUint64(elt.Key)),
-			Offset: util.BytesToUint32(elt.Data[:4]),
-			Size:   util.BytesToUint32(elt.Data[4:8])})
-	}
-	if err = cdb.DumpMap(fh, walk); err != nil {
-		return err
-	}
-	if m.c2 == nil {
-		return nil
-	}
-	fh.Close()
-	if fh, err = os.Open(m.fn2); err != nil {
-		return fmt.Errorf("cannot open %s: %s", m.fn2, err)
-	}
-	return cdb.DumpMap(fh, walk)
-}
-
-// converts an .idx index to a cdb
-func ConvertIndexToCdb(cdbName string, index *os.File) error {
-	idx, err := LoadNeedleMap(index)
-	if err != nil {
-		return fmt.Errorf("error loading needle map %s: %s", index.Name(), err)
-	}
-	defer idx.Close()
-	return DumpNeedleMapToCdb(cdbName, idx)
-}
-
-// dumps a NeedleMap into a cdb
-func DumpNeedleMapToCdb(cdbName string, nm *NeedleMap) error {
-	tempnam := cdbName + "t"
-	fnames := make([]string, 1, 2)
-	adder, closer, err := openTempCdb(tempnam)
-	if err != nil {
-		return fmt.Errorf("error creating factory: %s", err)
-	}
-	fnames[0] = tempnam
-
-	elt := cdb.Element{Key: make([]byte, 8), Data: make([]byte, 8)}
-
-	fcount := uint64(0)
-	walk := func(key uint64, offset, size uint32) error {
-		if fcount >= maxCdbRecCount {
-			if err = closer(); err != nil {
-				return err
-			}
-			tempnam = cdbName + "t2"
-			if adder, closer, err = openTempCdb(tempnam); err != nil {
-				return fmt.Errorf("error creating second factory: %s", err)
-			}
-			fnames = append(fnames, tempnam)
-			fcount = 0
-		}
-		util.Uint64toBytes(elt.Key, key)
-		util.Uint32toBytes(elt.Data[:4], offset)
-		util.Uint32toBytes(elt.Data[4:], size)
-		fcount++
-		return adder(elt)
-	}
-	// and write out the cdb from there
-	err = nm.Visit(func(nv NeedleValue) error {
-		return walk(uint64(nv.Key), nv.Offset, nv.Size)
-	})
-	if err != nil {
-		closer()
-		return fmt.Errorf("error walking index %v: %s", nm, err)
-	}
-	// store fileBytes
-	data, e := json.Marshal(nm.mapMetric)
-	if e != nil {
-		return fmt.Errorf("error marshaling metric %v: %s", nm.mapMetric, e)
-	}
-	if err = adder(cdb.Element{Key: []byte{'M'}, Data: data}); err != nil {
-		return err
-	}
-	if err = closer(); err != nil {
-		return err
-	}
-
-	os.Remove(cdbName)
-	if len(fnames) == 1 {
-		return os.Rename(fnames[0], cdbName)
-	}
-	bn, ext := baseFilename(cdbName)
-	if err = os.Rename(fnames[0], bn+".1"+ext); err != nil {
-		return err
-	}
-	return os.Rename(fnames[1], bn+".2"+ext)
-}
-
-func openTempCdb(fileName string) (cdb.AdderFunc, cdb.CloserFunc, error) {
-	fh, err := os.Create(fileName)
-	if err != nil {
-		return nil, nil, fmt.Errorf("cannot create cdb file %s: %v", fileName, err)
-	}
-	adder, closer, err := cdb.MakeFactory(fh)
-	if err != nil {
-		fh.Close()
-		return nil, nil, fmt.Errorf("error creating factory: %v", err)
-	}
-	return adder, func() error {
-		if e := closer(); e != nil {
-			fh.Close()
-			return e
-		}
-		fh.Close()
-		return nil
-	}, nil
-}
-
-// returns filename without extension, and the extension
-func baseFilename(fileName string) (string, string) {
-	ext := filepath.Ext(fileName)
-	return fileName[:len(fileName)-len(ext)], ext
-}