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
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
import { move, writeJson } from 'fs-extra'
import PQueue from 'p-queue'
import { basename } from 'path'
import { mapToJSON } from '@server/helpers/core-utils'
import { logger, loggerTagsFactory } from '@server/helpers/logger'
import { MStreamingPlaylistVideo } from '@server/types/models'
import { buildSha256Segment } from '../hls'
import { storeHLSFileFromPath } from '../object-storage'
const lTags = loggerTagsFactory('live')
class LiveSegmentShaStore {
private readonly segmentsSha256 = new Map<string, string>()
private readonly videoUUID: string
private readonly sha256Path: string
private readonly sha256PathTMP: string
private readonly streamingPlaylist: MStreamingPlaylistVideo
private readonly sendToObjectStorage: boolean
private readonly writeQueue = new PQueue({ concurrency: 1 })
constructor (options: {
videoUUID: string
sha256Path: string
streamingPlaylist: MStreamingPlaylistVideo
sendToObjectStorage: boolean
}) {
this.videoUUID = options.videoUUID
this.sha256Path = options.sha256Path
this.sha256PathTMP = options.sha256Path + '.tmp'
this.streamingPlaylist = options.streamingPlaylist
this.sendToObjectStorage = options.sendToObjectStorage
}
async addSegmentSha (segmentPath: string) {
logger.debug('Adding live sha segment %s.', segmentPath, lTags(this.videoUUID))
const shaResult = await buildSha256Segment(segmentPath)
const segmentName = basename(segmentPath)
this.segmentsSha256.set(segmentName, shaResult)
try {
await this.writeToDisk()
} catch (err) {
logger.error('Cannot write sha segments to disk.', { err })
}
}
async removeSegmentSha (segmentPath: string) {
const segmentName = basename(segmentPath)
logger.debug('Removing live sha segment %s.', segmentPath, lTags(this.videoUUID))
if (!this.segmentsSha256.has(segmentName)) {
logger.warn(
'Unknown segment in live segment hash store for video %s and segment %s.',
this.videoUUID, segmentPath, lTags(this.videoUUID)
)
return
}
this.segmentsSha256.delete(segmentName)
await this.writeToDisk()
}
private writeToDisk () {
return this.writeQueue.add(async () => {
// Atomic write
await writeJson(this.sha256PathTMP, mapToJSON(this.segmentsSha256))
await move(this.sha256PathTMP, this.sha256Path, { overwrite: true })
if (this.sendToObjectStorage) {
const url = await storeHLSFileFromPath(this.streamingPlaylist, this.sha256Path)
if (this.streamingPlaylist.segmentsSha256Url !== url) {
this.streamingPlaylist.segmentsSha256Url = url
await this.streamingPlaylist.save()
}
}
})
}
}
export {
LiveSegmentShaStore
}
|
