mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
88 lines
2.5 KiB
Go
88 lines
2.5 KiB
Go
package storage
|
|
|
|
import (
|
|
"os"
|
|
|
|
"github.com/chrislusf/seaweedfs/weed/glog"
|
|
"github.com/chrislusf/seaweedfs/weed/storage/idx"
|
|
"github.com/chrislusf/seaweedfs/weed/storage/needle_map"
|
|
. "github.com/chrislusf/seaweedfs/weed/storage/types"
|
|
)
|
|
|
|
type NeedleMap struct {
|
|
baseNeedleMapper
|
|
m needle_map.NeedleValueMap
|
|
}
|
|
|
|
func NewCompactNeedleMap(file *os.File) *NeedleMap {
|
|
nm := &NeedleMap{
|
|
m: needle_map.NewCompactMap(),
|
|
}
|
|
nm.indexFile = file
|
|
return nm
|
|
}
|
|
|
|
func NewBtreeNeedleMap(file *os.File) *NeedleMap {
|
|
nm := &NeedleMap{
|
|
m: needle_map.NewBtreeMap(),
|
|
}
|
|
nm.indexFile = file
|
|
return nm
|
|
}
|
|
|
|
func LoadCompactNeedleMap(file *os.File) (*NeedleMap, error) {
|
|
nm := NewCompactNeedleMap(file)
|
|
return doLoading(file, nm)
|
|
}
|
|
|
|
func LoadBtreeNeedleMap(file *os.File) (*NeedleMap, error) {
|
|
nm := NewBtreeNeedleMap(file)
|
|
return doLoading(file, nm)
|
|
}
|
|
|
|
func doLoading(file *os.File, nm *NeedleMap) (*NeedleMap, error) {
|
|
e := idx.WalkIndexFile(file, func(key NeedleId, offset Offset, size uint32) error {
|
|
nm.MaybeSetMaxFileKey(key)
|
|
if !offset.IsZero() && size != TombstoneFileSize {
|
|
nm.FileCounter++
|
|
nm.FileByteCounter = nm.FileByteCounter + uint64(size)
|
|
oldOffset, oldSize := nm.m.Set(NeedleId(key), offset, size)
|
|
// glog.V(3).Infoln("reading key", key, "offset", offset*NeedlePaddingSize, "size", size, "oldSize", oldSize)
|
|
if !oldOffset.IsZero() && oldSize != TombstoneFileSize {
|
|
nm.DeletionCounter++
|
|
nm.DeletionByteCounter = nm.DeletionByteCounter + uint64(oldSize)
|
|
}
|
|
} else {
|
|
oldSize := nm.m.Delete(NeedleId(key))
|
|
// glog.V(3).Infoln("removing key", key, "offset", offset*NeedlePaddingSize, "size", size, "oldSize", oldSize)
|
|
nm.DeletionCounter++
|
|
nm.DeletionByteCounter = nm.DeletionByteCounter + uint64(oldSize)
|
|
}
|
|
return nil
|
|
})
|
|
glog.V(1).Infof("max file key: %d for file: %s", nm.MaxFileKey(), file.Name())
|
|
return nm, e
|
|
}
|
|
|
|
func (nm *NeedleMap) Put(key NeedleId, offset Offset, size uint32) error {
|
|
_, oldSize := nm.m.Set(NeedleId(key), offset, size)
|
|
nm.logPut(key, oldSize, size)
|
|
return nm.appendToIndexFile(key, offset, size)
|
|
}
|
|
func (nm *NeedleMap) Get(key NeedleId) (element *needle_map.NeedleValue, ok bool) {
|
|
element, ok = nm.m.Get(NeedleId(key))
|
|
return
|
|
}
|
|
func (nm *NeedleMap) Delete(key NeedleId, offset Offset) error {
|
|
deletedBytes := nm.m.Delete(NeedleId(key))
|
|
nm.logDelete(deletedBytes)
|
|
return nm.appendToIndexFile(key, offset, TombstoneFileSize)
|
|
}
|
|
func (nm *NeedleMap) Close() {
|
|
_ = nm.indexFile.Close()
|
|
}
|
|
func (nm *NeedleMap) Destroy() error {
|
|
nm.Close()
|
|
return os.Remove(nm.indexFile.Name())
|
|
}
|