/
torrent_info.go
65 lines (55 loc) · 1.96 KB
/
torrent_info.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
// Copyright (c) 2016-2019 Uber Technologies, Inc.
//
// 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 storage
import (
"github.com/uber/kraken/core"
"github.com/willf/bitset"
)
// TorrentInfo encapsulates read-only torrent information.
type TorrentInfo struct {
metainfo *core.MetaInfo
bitfield *bitset.BitSet
percentDownloaded int
}
// NewTorrentInfo creates a new TorrentInfo.
func NewTorrentInfo(mi *core.MetaInfo, bitfield *bitset.BitSet) *TorrentInfo {
numComplete := bitfield.Count()
downloaded := int(float64(numComplete) / float64(mi.NumPieces()) * 100)
return &TorrentInfo{mi, bitfield, downloaded}
}
func (i *TorrentInfo) String() string {
return i.InfoHash().Hex()
}
// Digest returns the torrent's blob digest.
func (i *TorrentInfo) Digest() core.Digest {
return i.metainfo.Digest()
}
// InfoHash returns the hash torrent metainfo.
func (i *TorrentInfo) InfoHash() core.InfoHash {
return i.metainfo.InfoHash()
}
// MaxPieceLength returns the max piece length of the torrent.
func (i *TorrentInfo) MaxPieceLength() int64 {
return i.metainfo.PieceLength()
}
// PercentDownloaded returns the percent of bytes downloaded as an integer
// between 0 and 100. Useful for logging.
func (i *TorrentInfo) PercentDownloaded() int {
return i.percentDownloaded
}
// Bitfield returns the piece status bitfield of the torrent. Note, this is a
// snapshot and may be stale information.
func (i *TorrentInfo) Bitfield() *bitset.BitSet {
return i.bitfield
}