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1 | 'use strict' | |
2 | ||
3 | const config = require('config') | |
4 | const ipc = require('node-ipc') | |
5 | const pathUtils = require('path') | |
6 | const spawn = require('electron-spawn') | |
7 | ||
8 | const logger = require('../helpers/logger') | |
9 | ||
10 | const electronDebug = config.get('electron.debug') | |
11 | let host = config.get('webserver.host') | |
12 | let port = config.get('webserver.port') | |
13 | let nodeKey = 'webtorrentnode' + port | |
14 | let processKey = 'webtorrentprocess' + port | |
15 | ipc.config.silent = true | |
16 | ipc.config.id = nodeKey | |
17 | ||
18 | const webtorrent = { | |
19 | add: add, | |
20 | app: null, // Pid of the app | |
21 | create: create, | |
22 | remove: remove, | |
23 | seed: seed, | |
24 | silent: false // Useful for beautiful tests | |
25 | } | |
26 | ||
27 | function create (options, callback) { | |
28 | if (typeof options === 'function') { | |
29 | callback = options | |
30 | options = {} | |
31 | } | |
32 | ||
33 | // Override options | |
34 | if (options.host) host = options.host | |
35 | if (options.port) { | |
36 | port = options.port | |
37 | nodeKey = 'webtorrentnode' + port | |
38 | processKey = 'webtorrentprocess' + port | |
39 | ipc.config.id = nodeKey | |
40 | } | |
41 | ||
42 | ipc.serve(function () { | |
43 | if (!webtorrent.silent) logger.info('IPC server ready.') | |
44 | ||
45 | // Run a timeout of 30s after which we exit the process | |
46 | const timeoutWebtorrentProcess = setTimeout(function () { | |
47 | throw new Error('Timeout : cannot run the webtorrent process. Please ensure you have electron-prebuilt npm package installed with xvfb-run.') | |
48 | }, 30000) | |
49 | ||
50 | ipc.server.on(processKey + '.ready', function () { | |
51 | if (!webtorrent.silent) logger.info('Webtorrent process ready.') | |
52 | clearTimeout(timeoutWebtorrentProcess) | |
53 | callback() | |
54 | }) | |
55 | ||
56 | ipc.server.on(processKey + '.exception', function (data) { | |
57 | throw new Error('Received exception error from webtorrent process : ' + data.exception) | |
58 | }) | |
59 | ||
60 | const webtorrentProcess = spawn(pathUtils.join(__dirname, 'webtorrent-process.js'), host, port, { detached: true }) | |
61 | ||
62 | if (electronDebug === true) { | |
63 | webtorrentProcess.stderr.on('data', function (data) { | |
64 | logger.debug('Webtorrent process stderr: ', data.toString()) | |
65 | }) | |
66 | ||
67 | webtorrentProcess.stdout.on('data', function (data) { | |
68 | logger.debug('Webtorrent process:', data.toString()) | |
69 | }) | |
70 | } | |
71 | ||
72 | webtorrent.app = webtorrentProcess | |
73 | }) | |
74 | ||
75 | ipc.server.start() | |
76 | } | |
77 | ||
78 | function seed (path, callback) { | |
79 | const extension = pathUtils.extname(path) | |
80 | const basename = pathUtils.basename(path, extension) | |
81 | const data = { | |
82 | _id: basename, | |
83 | args: { | |
84 | path: path | |
85 | } | |
86 | } | |
87 | ||
88 | if (!webtorrent.silent) logger.debug('Node wants to seed %s.', data._id) | |
89 | ||
90 | // Finish signal | |
91 | const eventKey = nodeKey + '.seedDone.' + data._id | |
92 | ipc.server.on(eventKey, function listener (received) { | |
93 | if (!webtorrent.silent) logger.debug('Process seeded torrent %s.', received.magnetUri) | |
94 | ||
95 | // This is a fake object, we just use the magnetUri in this project | |
96 | const torrent = { | |
97 | magnetURI: received.magnetUri | |
98 | } | |
99 | ||
100 | ipc.server.off(eventKey, '*') | |
101 | callback(torrent) | |
102 | }) | |
103 | ||
104 | ipc.server.broadcast(processKey + '.seed', data) | |
105 | } | |
106 | ||
107 | function add (magnetUri, callback) { | |
108 | const data = { | |
109 | _id: magnetUri, | |
110 | args: { | |
111 | magnetUri: magnetUri | |
112 | } | |
113 | } | |
114 | ||
115 | if (!webtorrent.silent) logger.debug('Node wants to add ' + data._id) | |
116 | ||
117 | // Finish signal | |
118 | const eventKey = nodeKey + '.addDone.' + data._id | |
119 | ipc.server.on(eventKey, function (received) { | |
120 | if (!webtorrent.silent) logger.debug('Process added torrent.') | |
121 | ||
122 | // This is a fake object, we just use the magnetUri in this project | |
123 | const torrent = { | |
124 | files: received.files | |
125 | } | |
126 | ||
127 | ipc.server.off(eventKey, '*') | |
128 | callback(torrent) | |
129 | }) | |
130 | ||
131 | ipc.server.broadcast(processKey + '.add', data) | |
132 | } | |
133 | ||
134 | function remove (magnetUri, callback) { | |
135 | const data = { | |
136 | _id: magnetUri, | |
137 | args: { | |
138 | magnetUri: magnetUri | |
139 | } | |
140 | } | |
141 | ||
142 | if (!webtorrent.silent) logger.debug('Node wants to stop seeding %s.', data._id) | |
143 | ||
144 | // Finish signal | |
145 | const eventKey = nodeKey + '.removeDone.' + data._id | |
146 | ipc.server.on(eventKey, function (received) { | |
147 | if (!webtorrent.silent) logger.debug('Process removed torrent %s.', data._id) | |
148 | ||
149 | let err = null | |
150 | if (received.err) err = received.err | |
151 | ||
152 | ipc.server.off(eventKey, '*') | |
153 | callback(err) | |
154 | }) | |
155 | ||
156 | ipc.server.broadcast(processKey + '.remove', data) | |
157 | } | |
158 | ||
159 | // --------------------------------------------------------------------------- | |
160 | ||
161 | module.exports = webtorrent |