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- package storage
- import (
- "encoding/hex"
- "errors"
- "strings"
- "github.com/chrislusf/seaweedfs/weed/glog"
- "github.com/chrislusf/seaweedfs/weed/util"
- )
- type FileId struct {
- VolumeId VolumeId
- Key uint64
- Hashcode uint32
- }
- func NewFileIdFromNeedle(VolumeId VolumeId, n *Needle) *FileId {
- return &FileId{VolumeId: VolumeId, Key: n.Id, Hashcode: n.Cookie}
- }
- func NewFileId(VolumeId VolumeId, Key uint64, Hashcode uint32) *FileId {
- return &FileId{VolumeId: VolumeId, Key: Key, Hashcode: Hashcode}
- }
- func ParseFileId(fid string) (*FileId, error) {
- a := strings.Split(fid, ",")
- if len(a) != 2 {
- glog.V(1).Infoln("Invalid fid ", fid, ", split length ", len(a))
- return nil, errors.New("Invalid fid " + fid)
- }
- vid_string, key_hash_string := a[0], a[1]
- volumeId, _ := NewVolumeId(vid_string)
- key, hash, e := ParseKeyHash(key_hash_string)
- return &FileId{VolumeId: volumeId, Key: key, Hashcode: hash}, e
- }
- func (n *FileId) String() string {
- bytes := make([]byte, 12)
- util.Uint64toBytes(bytes[0:8], n.Key)
- util.Uint32toBytes(bytes[8:12], n.Hashcode)
- nonzero_index := 0
- for ; bytes[nonzero_index] == 0; nonzero_index++ {
- }
- return n.VolumeId.String() + "," + hex.EncodeToString(bytes[nonzero_index:])
- }
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