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1 | 'use strict' | |
2 | ||
3 | const async = require('async') | |
4 | const config = require('config') | |
5 | const fs = require('fs') | |
6 | const mongoose = require('mongoose') | |
7 | const request = require('request') | |
8 | ||
9 | const constants = require('../initializers/constants') | |
10 | const logger = require('../helpers/logger') | |
11 | const peertubeCrypto = require('../helpers/peertubeCrypto') | |
12 | const Pods = require('../models/pods') | |
13 | const requests = require('../helpers/requests') | |
14 | ||
15 | const http = config.get('webserver.https') ? 'https' : 'http' | |
16 | const host = config.get('webserver.host') | |
17 | const port = config.get('webserver.port') | |
18 | const Request = mongoose.model('Request') | |
19 | const Video = mongoose.model('Video') | |
20 | ||
21 | const pods = { | |
22 | addVideoToFriends: addVideoToFriends, | |
23 | hasFriends: hasFriends, | |
24 | getMyCertificate: getMyCertificate, | |
25 | makeFriends: makeFriends, | |
26 | quitFriends: quitFriends, | |
27 | removeVideoToFriends: removeVideoToFriends, | |
28 | sendOwnedVideosToPod: sendOwnedVideosToPod | |
29 | } | |
30 | ||
31 | function addVideoToFriends (video) { | |
32 | createRequest('add', video) | |
33 | } | |
34 | ||
35 | function hasFriends (callback) { | |
36 | Pods.count(function (err, count) { | |
37 | if (err) return callback(err) | |
38 | ||
39 | const hasFriends = (count !== 0) | |
40 | callback(null, hasFriends) | |
41 | }) | |
42 | } | |
43 | ||
44 | function getMyCertificate (callback) { | |
45 | fs.readFile(peertubeCrypto.getCertDir() + 'peertube.pub', 'utf8', callback) | |
46 | } | |
47 | ||
48 | function makeFriends (callback) { | |
49 | const podsScore = {} | |
50 | ||
51 | logger.info('Make friends!') | |
52 | getMyCertificate(function (err, cert) { | |
53 | if (err) { | |
54 | logger.error('Cannot read public cert.') | |
55 | return callback(err) | |
56 | } | |
57 | ||
58 | const urls = config.get('network.friends') | |
59 | ||
60 | async.eachSeries(urls, function (url, callbackEach) { | |
61 | computeForeignPodsList(url, podsScore, callbackEach) | |
62 | }, function (err) { | |
63 | if (err) return callback(err) | |
64 | ||
65 | logger.debug('Pods scores computed.', { podsScore: podsScore }) | |
66 | const podsList = computeWinningPods(urls, podsScore) | |
67 | logger.debug('Pods that we keep.', { podsToKeep: podsList }) | |
68 | ||
69 | makeRequestsToWinningPods(cert, podsList, callback) | |
70 | }) | |
71 | }) | |
72 | } | |
73 | ||
74 | function quitFriends (callback) { | |
75 | // Stop pool requests | |
76 | Request.deactivate() | |
77 | // Flush pool requests | |
78 | Request.flush() | |
79 | ||
80 | async.waterfall([ | |
81 | function getPodsList (callbackAsync) { | |
82 | return Pods.list(callbackAsync) | |
83 | }, | |
84 | ||
85 | function announceIQuitMyFriends (pods, callbackAsync) { | |
86 | const requestParams = { | |
87 | method: 'POST', | |
88 | path: '/api/' + constants.API_VERSION + '/pods/remove', | |
89 | sign: true | |
90 | } | |
91 | ||
92 | // Announce we quit them | |
93 | // We don't care if the request fails | |
94 | // The other pod will exclude us automatically after a while | |
95 | async.eachLimit(pods, constants.REQUESTS_IN_PARALLEL, function (pod, callbackEach) { | |
96 | requestParams.toPod = pod | |
97 | requests.makeSecureRequest(requestParams, callbackEach) | |
98 | }, function (err) { | |
99 | if (err) { | |
100 | logger.error('Some errors while quitting friends.', { err: err }) | |
101 | // Don't stop the process | |
102 | } | |
103 | ||
104 | return callbackAsync() | |
105 | }) | |
106 | }, | |
107 | ||
108 | function removePodsFromDB (callbackAsync) { | |
109 | Pods.removeAll(function (err) { | |
110 | return callbackAsync(err) | |
111 | }) | |
112 | }, | |
113 | ||
114 | function listRemoteVideos (callbackAsync) { | |
115 | logger.info('Broke friends, so sad :(') | |
116 | ||
117 | Video.listRemotes(callbackAsync) | |
118 | }, | |
119 | ||
120 | function removeTheRemoteVideos (videosList, callbackAsync) { | |
121 | async.each(videosList, function (video, callbackEach) { | |
122 | video.remove(callbackEach) | |
123 | }, callbackAsync) | |
124 | } | |
125 | ], function (err) { | |
126 | // Don't forget to re activate the scheduler, even if there was an error | |
127 | Request.activate() | |
128 | ||
129 | if (err) return callback(err) | |
130 | ||
131 | logger.info('Removed all remote videos.') | |
132 | return callback(null) | |
133 | }) | |
134 | } | |
135 | ||
136 | function removeVideoToFriends (videoParams) { | |
137 | createRequest('remove', videoParams) | |
138 | } | |
139 | ||
140 | function sendOwnedVideosToPod (podId) { | |
141 | Video.listOwned(function (err, videosList) { | |
142 | if (err) { | |
143 | logger.error('Cannot get the list of videos we own.') | |
144 | return | |
145 | } | |
146 | ||
147 | videosList.forEach(function (video) { | |
148 | video.toRemoteJSON(function (err, remoteVideo) { | |
149 | if (err) { | |
150 | logger.error('Cannot convert video to remote.', { error: err }) | |
151 | // Don't break the process | |
152 | return | |
153 | } | |
154 | ||
155 | createRequest('add', remoteVideo, [ podId ]) | |
156 | }) | |
157 | }) | |
158 | }) | |
159 | } | |
160 | ||
161 | // --------------------------------------------------------------------------- | |
162 | ||
163 | module.exports = pods | |
164 | ||
165 | // --------------------------------------------------------------------------- | |
166 | ||
167 | function computeForeignPodsList (url, podsScore, callback) { | |
168 | getForeignPodsList(url, function (err, foreignPodsList) { | |
169 | if (err) return callback(err) | |
170 | ||
171 | if (!foreignPodsList) foreignPodsList = [] | |
172 | ||
173 | // Let's give 1 point to the pod we ask the friends list | |
174 | foreignPodsList.push({ url: url }) | |
175 | ||
176 | foreignPodsList.forEach(function (foreignPod) { | |
177 | const foreignPodUrl = foreignPod.url | |
178 | ||
179 | if (podsScore[foreignPodUrl]) podsScore[foreignPodUrl]++ | |
180 | else podsScore[foreignPodUrl] = 1 | |
181 | }) | |
182 | ||
183 | callback() | |
184 | }) | |
185 | } | |
186 | ||
187 | function computeWinningPods (urls, podsScore) { | |
188 | // Build the list of pods to add | |
189 | // Only add a pod if it exists in more than a half base pods | |
190 | const podsList = [] | |
191 | const baseScore = urls.length / 2 | |
192 | Object.keys(podsScore).forEach(function (pod) { | |
193 | if (podsScore[pod] > baseScore) podsList.push({ url: pod }) | |
194 | }) | |
195 | ||
196 | return podsList | |
197 | } | |
198 | ||
199 | function getForeignPodsList (url, callback) { | |
200 | const path = '/api/' + constants.API_VERSION + '/pods' | |
201 | ||
202 | request.get(url + path, function (err, response, body) { | |
203 | if (err) return callback(err) | |
204 | ||
205 | callback(null, JSON.parse(body)) | |
206 | }) | |
207 | } | |
208 | ||
209 | function makeRequestsToWinningPods (cert, podsList, callback) { | |
210 | // Stop pool requests | |
211 | Request.deactivate() | |
212 | // Flush pool requests | |
213 | Request.forceSend() | |
214 | ||
215 | async.eachLimit(podsList, constants.REQUESTS_IN_PARALLEL, function (pod, callbackEach) { | |
216 | const params = { | |
217 | url: pod.url + '/api/' + constants.API_VERSION + '/pods/', | |
218 | method: 'POST', | |
219 | json: { | |
220 | url: http + '://' + host + ':' + port, | |
221 | publicKey: cert | |
222 | } | |
223 | } | |
224 | ||
225 | requests.makeRetryRequest(params, function (err, res, body) { | |
226 | if (err) { | |
227 | logger.error('Error with adding %s pod.', pod.url, { error: err }) | |
228 | // Don't break the process | |
229 | return callbackEach() | |
230 | } | |
231 | ||
232 | if (res.statusCode === 200) { | |
233 | Pods.add({ url: pod.url, publicKey: body.cert, score: constants.FRIEND_BASE_SCORE }, function (err, podCreated) { | |
234 | if (err) logger.error('Cannot add friend %s pod.', pod.url) | |
235 | ||
236 | // Add our videos to the request scheduler | |
237 | sendOwnedVideosToPod(podCreated._id) | |
238 | ||
239 | return callbackEach() | |
240 | }) | |
241 | } else { | |
242 | logger.error('Status not 200 for %s pod.', pod.url) | |
243 | return callbackEach() | |
244 | } | |
245 | }) | |
246 | }, function endRequests () { | |
247 | // Final callback, we've ended all the requests | |
248 | // Now we made new friends, we can re activate the pool of requests | |
249 | Request.activate() | |
250 | ||
251 | logger.debug('makeRequestsToWinningPods finished.') | |
252 | return callback() | |
253 | }) | |
254 | } | |
255 | ||
256 | function createRequest (type, data, to) { | |
257 | const req = new Request({ | |
258 | request: { | |
259 | type: type, | |
260 | data: data | |
261 | } | |
262 | }) | |
263 | ||
264 | if (to) { | |
265 | req.to = to | |
266 | } | |
267 | ||
268 | req.save(function (err) { | |
269 | if (err) logger.error('Cannot save the request.', { error: err }) | |
270 | }) | |
271 | } |