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1 | 'use strict' |
2 | ||
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3 | const async = require('async') |
4 | const config = require('config') | |
5 | const fs = require('fs') | |
6 | const request = require('request') | |
7 | ||
8 | const constants = require('../initializers/constants') | |
9 | const logger = require('../helpers/logger') | |
10 | const peertubeCrypto = require('../helpers/peertubeCrypto') | |
11 | const Pods = require('../models/pods') | |
e3647ae2 | 12 | const requestsScheduler = require('../lib/requestsScheduler') |
f0f5567b | 13 | const requests = require('../helpers/requests') |
cbe2f7c3 | 14 | const videos = require('../lib/videos') |
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15 | const Videos = require('../models/videos') |
16 | ||
17 | const http = config.get('webserver.https') ? 'https' : 'http' | |
18 | const host = config.get('webserver.host') | |
19 | const port = config.get('webserver.port') | |
20 | ||
21 | const pods = { | |
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22 | addVideoToFriends: addVideoToFriends, |
23 | hasFriends: hasFriends, | |
cbe2f7c3 | 24 | getMyCertificate: getMyCertificate, |
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25 | makeFriends: makeFriends, |
26 | quitFriends: quitFriends, | |
27 | removeVideoToFriends: removeVideoToFriends | |
28 | } | |
29 | ||
30 | function addVideoToFriends (video) { | |
31 | // To avoid duplicates | |
f0f5567b | 32 | const id = video.name + video.magnetUri |
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33 | // ensure namePath is null |
34 | video.namePath = null | |
e3647ae2 | 35 | requestsScheduler.addRequest(id, 'add', video) |
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36 | } |
37 | ||
38 | function hasFriends (callback) { | |
39 | Pods.count(function (err, count) { | |
40 | if (err) return callback(err) | |
41 | ||
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42 | const hasFriends = (count !== 0) |
43 | callback(null, hasFriends) | |
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44 | }) |
45 | } | |
46 | ||
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47 | function getMyCertificate (callback) { |
48 | fs.readFile(peertubeCrypto.getCertDir() + 'peertube.pub', 'utf8', callback) | |
49 | } | |
50 | ||
9f10b292 | 51 | function makeFriends (callback) { |
bc503c2a | 52 | const podsScore = {} |
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53 | |
54 | logger.info('Make friends!') | |
cbe2f7c3 | 55 | getMyCertificate(function (err, cert) { |
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56 | if (err) { |
57 | logger.error('Cannot read public cert.') | |
58 | return callback(err) | |
59 | } | |
c173e565 | 60 | |
f0f5567b | 61 | const urls = config.get('network.friends') |
c173e565 | 62 | |
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63 | async.each(urls, function (url, callbackEach) { |
64 | computeForeignPodsList(url, podsScore, callbackEach) | |
89d1d8ba | 65 | }, function (err) { |
c173e565 C |
66 | if (err) return callback(err) |
67 | ||
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68 | logger.debug('Pods scores computed.', { podsScore: podsScore }) |
69 | const podsList = computeWinningPods(urls, podsScore) | |
70 | logger.debug('Pods that we keep.', { podsToKeep: podsList }) | |
9f10b292 | 71 | |
bc503c2a | 72 | makeRequestsToWinningPods(cert, podsList, callback) |
c173e565 | 73 | }) |
9f10b292 | 74 | }) |
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75 | } |
76 | ||
77 | function quitFriends (callback) { | |
78 | // Stop pool requests | |
e3647ae2 | 79 | requestsScheduler.deactivate() |
9f10b292 | 80 | // Flush pool requests |
e3647ae2 | 81 | requestsScheduler.forceSend() |
9f10b292 | 82 | |
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83 | async.waterfall([ |
84 | function getPodsList (callbackAsync) { | |
85 | return Pods.list(callbackAsync) | |
86 | }, | |
87 | ||
88 | function announceIQuitMyFriends (pods, callbackAsync) { | |
89 | const request = { | |
90 | method: 'POST', | |
91 | path: '/api/' + constants.API_VERSION + '/pods/remove', | |
92 | sign: true, | |
93 | encrypt: true, | |
94 | data: { | |
95 | url: 'me' // Fake data | |
96 | } | |
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97 | } |
98 | ||
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99 | // Announce we quit them |
100 | requests.makeMultipleRetryRequest(request, pods, function (err) { | |
101 | return callbackAsync(err) | |
102 | }) | |
103 | }, | |
c173e565 | 104 | |
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105 | function removePodsFromDB (callbackAsync) { |
106 | Pods.removeAll(function (err) { | |
107 | return callbackAsync(err) | |
108 | }) | |
109 | }, | |
c173e565 | 110 | |
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111 | function listRemoteVideos (callbackAsync) { |
112 | logger.info('Broke friends, so sad :(') | |
c173e565 | 113 | |
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114 | Videos.listFromRemotes(callbackAsync) |
115 | }, | |
c173e565 | 116 | |
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117 | function removeTheRemoteVideos (videosList, callbackAsync) { |
118 | videos.removeRemoteVideos(videosList, function (err) { | |
119 | if (err) { | |
120 | logger.error('Cannot remove remote videos.', { error: err }) | |
121 | return callbackAsync(err) | |
122 | } | |
cbe2f7c3 | 123 | |
e7ea2817 | 124 | return callbackAsync(null) |
c173e565 | 125 | }) |
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126 | } |
127 | ], function (err) { | |
128 | // Don't forget to re activate the scheduler, even if there was an error | |
129 | requestsScheduler.activate() | |
130 | ||
131 | if (err) return callback(err) | |
132 | ||
133 | logger.info('Removed all remote videos.') | |
134 | return callback(null) | |
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135 | }) |
136 | } | |
c173e565 | 137 | |
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138 | function removeVideoToFriends (video) { |
139 | // To avoid duplicates | |
f0f5567b | 140 | const id = video.name + video.magnetUri |
e3647ae2 | 141 | requestsScheduler.addRequest(id, 'remove', video) |
9f10b292 | 142 | } |
c173e565 | 143 | |
9f10b292 | 144 | // --------------------------------------------------------------------------- |
c173e565 | 145 | |
9f10b292 | 146 | module.exports = pods |
c173e565 | 147 | |
9f10b292 | 148 | // --------------------------------------------------------------------------- |
c173e565 | 149 | |
bc503c2a | 150 | function computeForeignPodsList (url, podsScore, callback) { |
89d1d8ba | 151 | // Let's give 1 point to the pod we ask the friends list |
bc503c2a | 152 | podsScore[url] = 1 |
89d1d8ba | 153 | |
bc503c2a | 154 | getForeignPodsList(url, function (err, foreignPodsList) { |
89d1d8ba | 155 | if (err) return callback(err) |
bc503c2a | 156 | if (foreignPodsList.length === 0) return callback() |
89d1d8ba | 157 | |
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158 | foreignPodsList.forEach(function (foreignPod) { |
159 | const foreignUrl = foreignPod.url | |
89d1d8ba | 160 | |
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161 | if (podsScore[foreignUrl]) podsScore[foreignUrl]++ |
162 | else podsScore[foreignUrl] = 1 | |
89d1d8ba | 163 | }) |
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164 | |
165 | callback() | |
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166 | }) |
167 | } | |
168 | ||
bc503c2a | 169 | function computeWinningPods (urls, podsScore) { |
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170 | // Build the list of pods to add |
171 | // Only add a pod if it exists in more than a half base pods | |
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172 | const podsList = [] |
173 | const baseScore = urls.length / 2 | |
d6ea0175 | 174 | Object.keys(podsScore).forEach(function (pod) { |
bc503c2a | 175 | if (podsScore[pod] > baseScore) podsList.push({ url: pod }) |
89d1d8ba | 176 | }) |
e7ea2817 | 177 | |
bc503c2a | 178 | return podsList |
89d1d8ba C |
179 | } |
180 | ||
9f10b292 | 181 | function getForeignPodsList (url, callback) { |
f0f5567b | 182 | const path = '/api/' + constants.API_VERSION + '/pods' |
c173e565 | 183 | |
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184 | request.get(url + path, function (err, response, body) { |
185 | if (err) return callback(err) | |
8425cb89 | 186 | |
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187 | callback(null, JSON.parse(body)) |
188 | }) | |
189 | } | |
89d1d8ba | 190 | |
bc503c2a | 191 | function makeRequestsToWinningPods (cert, podsList, callback) { |
89d1d8ba | 192 | // Stop pool requests |
e3647ae2 | 193 | requestsScheduler.deactivate() |
89d1d8ba | 194 | // Flush pool requests |
e3647ae2 | 195 | requestsScheduler.forceSend() |
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196 | |
197 | // Get the list of our videos to send to our new friends | |
bc503c2a | 198 | Videos.listOwned(function (err, videosList) { |
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199 | if (err) { |
200 | logger.error('Cannot get the list of videos we own.') | |
201 | return callback(err) | |
202 | } | |
203 | ||
f0f5567b | 204 | const data = { |
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205 | url: http + '://' + host + ':' + port, |
206 | publicKey: cert, | |
bc503c2a | 207 | videos: videosList |
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208 | } |
209 | ||
210 | requests.makeMultipleRetryRequest( | |
211 | { method: 'POST', path: '/api/' + constants.API_VERSION + '/pods/', data: data }, | |
212 | ||
bc503c2a | 213 | podsList, |
89d1d8ba | 214 | |
e7ea2817 | 215 | // Callback called after each request |
bc503c2a | 216 | function eachRequest (err, response, body, url, pod, callbackEachRequest) { |
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217 | // We add the pod if it responded correctly with its public certificate |
218 | if (!err && response.statusCode === 200) { | |
219 | Pods.add({ url: pod.url, publicKey: body.cert, score: constants.FRIEND_BASE_SCORE }, function (err) { | |
220 | if (err) { | |
221 | logger.error('Error with adding %s pod.', pod.url, { error: err }) | |
bc503c2a | 222 | return callbackEachRequest() |
89d1d8ba | 223 | } |
bc503c2a | 224 | |
cbe2f7c3 | 225 | videos.createRemoteVideos(body.videos, function (err) { |
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226 | if (err) { |
227 | logger.error('Error with adding videos of pod.', pod.url, { error: err }) | |
bc503c2a | 228 | return callbackEachRequest() |
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229 | } |
230 | ||
231 | logger.debug('Adding remote videos from %s.', pod.url, { videos: body.videos }) | |
bc503c2a | 232 | return callbackEachRequest() |
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233 | }) |
234 | }) | |
235 | } else { | |
236 | logger.error('Error with adding %s pod.', pod.url, { error: err || new Error('Status not 200') }) | |
bc503c2a | 237 | return callbackEachRequest() |
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238 | } |
239 | }, | |
240 | ||
e7ea2817 | 241 | // Final callback, we've ended all the requests |
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242 | function endRequests (err) { |
243 | // Now we made new friends, we can re activate the pool of requests | |
e3647ae2 | 244 | requestsScheduler.activate() |
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245 | |
246 | if (err) { | |
247 | logger.error('There was some errors when we wanted to make friends.') | |
248 | return callback(err) | |
249 | } | |
250 | ||
251 | logger.debug('makeRequestsToWinningPods finished.') | |
252 | return callback(null) | |
253 | } | |
254 | ) | |
255 | }) | |
256 | } |