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package storage
import (
"os"
"github.com/seaweedfs/seaweedfs/weed/glog"
"github.com/seaweedfs/seaweedfs/weed/storage/idx"
"github.com/seaweedfs/seaweedfs/weed/storage/needle_map"
. "github.com/seaweedfs/seaweedfs/weed/storage/types"
"github.com/syndtr/goleveldb/leveldb/opt"
)
type NeedleMap struct {
baseNeedleMapper
m needle_map.NeedleValueMap
}
func NewCompactNeedleMap(file *os.File) *NeedleMap {
nm := &NeedleMap{
m: needle_map.NewCompactMap(),
}
nm.indexFile = file
stat, err := file.Stat()
if err != nil {
glog.Fatalf("stat file %s: %v", file.Name(), err)
}
nm.indexFileOffset = stat.Size()
return nm
}
func LoadCompactNeedleMap(file *os.File) (*NeedleMap, error) {
nm := NewCompactNeedleMap(file)
return doLoading(file, nm)
}
func doLoading(file *os.File, nm *NeedleMap) (*NeedleMap, error) {
e := idx.WalkIndexFile(file, 0, func(key NeedleId, offset Offset, size Size) error {
nm.MaybeSetMaxFileKey(key)
if !offset.IsZero() && !size.IsDeleted() {
nm.FileCounter++
nm.FileByteCounter = nm.FileByteCounter + uint64(size)
oldOffset, oldSize := nm.m.Set(NeedleId(key), offset, size)
if !oldOffset.IsZero() && oldSize.IsValid() {
nm.DeletionCounter++
nm.DeletionByteCounter = nm.DeletionByteCounter + uint64(oldSize)
}
} else {
oldSize := nm.m.Delete(NeedleId(key))
nm.DeletionCounter++
nm.DeletionByteCounter = nm.DeletionByteCounter + uint64(oldSize)
}
return nil
})
glog.V(1).Infof("max file key: %v count: %d deleted: %d for file: %s", nm.MaxFileKey(), nm.FileCount(), nm.DeletedCount(), file.Name())
return nm, e
}
func (nm *NeedleMap) Put(key NeedleId, offset Offset, size Size) 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() {
if nm.indexFile == nil {
return
}
indexFileName := nm.indexFile.Name()
if err := nm.indexFile.Sync(); err != nil {
glog.Warningf("sync file %s failed, %v", indexFileName, err)
}
_ = nm.indexFile.Close()
}
func (nm *NeedleMap) Destroy() error {
nm.Close()
return os.Remove(nm.indexFile.Name())
}
func (nm *NeedleMap) UpdateNeedleMap(v *Volume, indexFile *os.File, opts *opt.Options, ldbTimeout int64) error {
if v.nm != nil {
v.nm.Close()
v.nm = nil
}
defer func() {
if v.tmpNm != nil {
v.tmpNm.Close()
v.tmpNm = nil
}
}()
nm.indexFile = indexFile
stat, err := indexFile.Stat()
if err != nil {
glog.Fatalf("stat file %s: %v", indexFile.Name(), err)
return err
}
nm.indexFileOffset = stat.Size()
v.nm = nm
v.tmpNm = nil
return nil
}
func (nm *NeedleMap) DoOffsetLoading(v *Volume, indexFile *os.File, startFrom uint64) error {
glog.V(0).Infof("loading idx from offset %d for file: %s", startFrom, indexFile.Name())
e := idx.WalkIndexFile(indexFile, startFrom, func(key NeedleId, offset Offset, size Size) error {
nm.MaybeSetMaxFileKey(key)
nm.FileCounter++
if !offset.IsZero() && size.IsValid() {
nm.FileByteCounter = nm.FileByteCounter + uint64(size)
oldOffset, oldSize := nm.m.Set(NeedleId(key), offset, size)
if !oldOffset.IsZero() && oldSize.IsValid() {
nm.DeletionCounter++
nm.DeletionByteCounter = nm.DeletionByteCounter + uint64(oldSize)
}
} else {
oldSize := nm.m.Delete(NeedleId(key))
nm.DeletionCounter++
nm.DeletionByteCounter = nm.DeletionByteCounter + uint64(oldSize)
}
return nil
})
return e
}
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