This repository has been archived by the owner on Feb 27, 2023. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 773
/
piece_state.go
67 lines (56 loc) · 1.81 KB
/
piece_state.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
/*
* Copyright The Dragonfly Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package progress
import (
"github.com/dragonflyoss/Dragonfly/pkg/errortypes"
"github.com/dragonflyoss/Dragonfly/pkg/stringutils"
"github.com/dragonflyoss/Dragonfly/pkg/syncmap"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
// pieceState maintains the information about
// which peers the piece currently exists on.
type pieceState struct {
pieceContainer *syncmap.SyncMap
}
// newPieceState returns a new pieceState.
func newPieceState() *pieceState {
return &pieceState{
pieceContainer: syncmap.NewSyncMap(),
}
}
// add a peerID for the corresponding piece which means that
// there is a new peer node that owns this piece.
func (ps *pieceState) add(peerID string) error {
if stringutils.IsEmptyStr(peerID) {
return errors.Wrap(errortypes.ErrEmptyValue, "peerID")
}
ok, err := ps.pieceContainer.GetAsBool(peerID)
if err == nil && ok {
logrus.Warnf("peerID: %s is exist", peerID)
return nil
}
if err != nil && !errortypes.IsDataNotFound(err) {
return err
}
return ps.pieceContainer.Add(peerID, true)
}
func (ps *pieceState) getAvailablePeers() []string {
return ps.pieceContainer.ListKeyAsStringSlice()
}
func (ps *pieceState) delete(peerID string) error {
return ps.pieceContainer.Remove(peerID)
}