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1 | 'use strict' | |
2 | ||
3 | const each = require('async/each') | |
4 | const eachLimit = require('async/eachLimit') | |
5 | const eachSeries = require('async/eachSeries') | |
6 | const fs = require('fs') | |
7 | const request = require('request') | |
8 | const waterfall = require('async/waterfall') | |
9 | ||
10 | const constants = require('../initializers/constants') | |
11 | const db = require('../initializers/database') | |
12 | const logger = require('../helpers/logger') | |
13 | const requests = require('../helpers/requests') | |
14 | ||
15 | const friends = { | |
16 | addVideoToFriends, | |
17 | updateVideoToFriends, | |
18 | reportAbuseVideoToFriend, | |
19 | hasFriends, | |
20 | getMyCertificate, | |
21 | makeFriends, | |
22 | quitFriends, | |
23 | removeVideoToFriends, | |
24 | sendOwnedVideosToPod | |
25 | } | |
26 | ||
27 | function addVideoToFriends (videoData, transaction, callback) { | |
28 | const options = { | |
29 | type: 'add', | |
30 | endpoint: constants.REQUEST_ENDPOINTS.VIDEOS, | |
31 | data: videoData, | |
32 | transaction | |
33 | } | |
34 | createRequest(options, callback) | |
35 | } | |
36 | ||
37 | function updateVideoToFriends (videoData, transaction, callback) { | |
38 | const options = { | |
39 | type: 'update', | |
40 | endpoint: constants.REQUEST_ENDPOINTS.VIDEOS, | |
41 | data: videoData, | |
42 | transaction | |
43 | } | |
44 | createRequest(options, callback) | |
45 | } | |
46 | ||
47 | function removeVideoToFriends (videoParams) { | |
48 | const options = { | |
49 | type: 'remove', | |
50 | endpoint: constants.REQUEST_ENDPOINTS.VIDEOS, | |
51 | data: videoParams | |
52 | } | |
53 | createRequest(options) | |
54 | } | |
55 | ||
56 | function reportAbuseVideoToFriend (reportData, video) { | |
57 | const options = { | |
58 | type: 'report-abuse', | |
59 | endpoint: constants.REQUEST_ENDPOINTS.VIDEOS, | |
60 | data: reportData, | |
61 | toIds: [ video.Author.podId ] | |
62 | } | |
63 | createRequest(options) | |
64 | } | |
65 | ||
66 | function hasFriends (callback) { | |
67 | db.Pod.countAll(function (err, count) { | |
68 | if (err) return callback(err) | |
69 | ||
70 | const hasFriends = (count !== 0) | |
71 | callback(null, hasFriends) | |
72 | }) | |
73 | } | |
74 | ||
75 | function getMyCertificate (callback) { | |
76 | fs.readFile(constants.CONFIG.STORAGE.CERT_DIR + 'peertube.pub', 'utf8', callback) | |
77 | } | |
78 | ||
79 | function makeFriends (hosts, callback) { | |
80 | const podsScore = {} | |
81 | ||
82 | logger.info('Make friends!') | |
83 | getMyCertificate(function (err, cert) { | |
84 | if (err) { | |
85 | logger.error('Cannot read public cert.') | |
86 | return callback(err) | |
87 | } | |
88 | ||
89 | eachSeries(hosts, function (host, callbackEach) { | |
90 | computeForeignPodsList(host, podsScore, callbackEach) | |
91 | }, function (err) { | |
92 | if (err) return callback(err) | |
93 | ||
94 | logger.debug('Pods scores computed.', { podsScore: podsScore }) | |
95 | const podsList = computeWinningPods(hosts, podsScore) | |
96 | logger.debug('Pods that we keep.', { podsToKeep: podsList }) | |
97 | ||
98 | makeRequestsToWinningPods(cert, podsList, callback) | |
99 | }) | |
100 | }) | |
101 | } | |
102 | ||
103 | function quitFriends (callback) { | |
104 | // Stop pool requests | |
105 | db.Request.deactivate() | |
106 | ||
107 | waterfall([ | |
108 | function flushRequests (callbackAsync) { | |
109 | db.Request.flush(callbackAsync) | |
110 | }, | |
111 | ||
112 | function getPodsList (callbackAsync) { | |
113 | return db.Pod.list(callbackAsync) | |
114 | }, | |
115 | ||
116 | function announceIQuitMyFriends (pods, callbackAsync) { | |
117 | const requestParams = { | |
118 | method: 'POST', | |
119 | path: '/api/' + constants.API_VERSION + '/pods/remove', | |
120 | sign: true | |
121 | } | |
122 | ||
123 | // Announce we quit them | |
124 | // We don't care if the request fails | |
125 | // The other pod will exclude us automatically after a while | |
126 | eachLimit(pods, constants.REQUESTS_IN_PARALLEL, function (pod, callbackEach) { | |
127 | requestParams.toPod = pod | |
128 | requests.makeSecureRequest(requestParams, callbackEach) | |
129 | }, function (err) { | |
130 | if (err) { | |
131 | logger.error('Some errors while quitting friends.', { err: err }) | |
132 | // Don't stop the process | |
133 | } | |
134 | ||
135 | return callbackAsync(null, pods) | |
136 | }) | |
137 | }, | |
138 | ||
139 | function removePodsFromDB (pods, callbackAsync) { | |
140 | each(pods, function (pod, callbackEach) { | |
141 | pod.destroy().asCallback(callbackEach) | |
142 | }, callbackAsync) | |
143 | } | |
144 | ], function (err) { | |
145 | // Don't forget to re activate the scheduler, even if there was an error | |
146 | db.Request.activate() | |
147 | ||
148 | if (err) return callback(err) | |
149 | ||
150 | logger.info('Removed all remote videos.') | |
151 | return callback(null) | |
152 | }) | |
153 | } | |
154 | ||
155 | function sendOwnedVideosToPod (podId) { | |
156 | db.Video.listOwnedAndPopulateAuthorAndTags(function (err, videosList) { | |
157 | if (err) { | |
158 | logger.error('Cannot get the list of videos we own.') | |
159 | return | |
160 | } | |
161 | ||
162 | videosList.forEach(function (video) { | |
163 | video.toAddRemoteJSON(function (err, remoteVideo) { | |
164 | if (err) { | |
165 | logger.error('Cannot convert video to remote.', { error: err }) | |
166 | // Don't break the process | |
167 | return | |
168 | } | |
169 | ||
170 | const options = { | |
171 | type: 'add', | |
172 | endpoint: constants.REQUEST_ENDPOINTS.VIDEOS, | |
173 | data: remoteVideo, | |
174 | toIds: [ podId ] | |
175 | } | |
176 | createRequest(options) | |
177 | }) | |
178 | }) | |
179 | }) | |
180 | } | |
181 | ||
182 | // --------------------------------------------------------------------------- | |
183 | ||
184 | module.exports = friends | |
185 | ||
186 | // --------------------------------------------------------------------------- | |
187 | ||
188 | function computeForeignPodsList (host, podsScore, callback) { | |
189 | getForeignPodsList(host, function (err, res) { | |
190 | if (err) return callback(err) | |
191 | ||
192 | const foreignPodsList = res.data | |
193 | ||
194 | // Let's give 1 point to the pod we ask the friends list | |
195 | foreignPodsList.push({ host }) | |
196 | ||
197 | foreignPodsList.forEach(function (foreignPod) { | |
198 | const foreignPodHost = foreignPod.host | |
199 | ||
200 | if (podsScore[foreignPodHost]) podsScore[foreignPodHost]++ | |
201 | else podsScore[foreignPodHost] = 1 | |
202 | }) | |
203 | ||
204 | callback() | |
205 | }) | |
206 | } | |
207 | ||
208 | function computeWinningPods (hosts, podsScore) { | |
209 | // Build the list of pods to add | |
210 | // Only add a pod if it exists in more than a half base pods | |
211 | const podsList = [] | |
212 | const baseScore = hosts.length / 2 | |
213 | Object.keys(podsScore).forEach(function (podHost) { | |
214 | // If the pod is not me and with a good score we add it | |
215 | if (isMe(podHost) === false && podsScore[podHost] > baseScore) { | |
216 | podsList.push({ host: podHost }) | |
217 | } | |
218 | }) | |
219 | ||
220 | return podsList | |
221 | } | |
222 | ||
223 | function getForeignPodsList (host, callback) { | |
224 | const path = '/api/' + constants.API_VERSION + '/pods' | |
225 | ||
226 | request.get(constants.REMOTE_SCHEME.HTTP + '://' + host + path, function (err, response, body) { | |
227 | if (err) return callback(err) | |
228 | ||
229 | try { | |
230 | const json = JSON.parse(body) | |
231 | return callback(null, json) | |
232 | } catch (err) { | |
233 | return callback(err) | |
234 | } | |
235 | }) | |
236 | } | |
237 | ||
238 | function makeRequestsToWinningPods (cert, podsList, callback) { | |
239 | // Stop pool requests | |
240 | db.Request.deactivate() | |
241 | // Flush pool requests | |
242 | db.Request.forceSend() | |
243 | ||
244 | eachLimit(podsList, constants.REQUESTS_IN_PARALLEL, function (pod, callbackEach) { | |
245 | const params = { | |
246 | url: constants.REMOTE_SCHEME.HTTP + '://' + pod.host + '/api/' + constants.API_VERSION + '/pods/', | |
247 | method: 'POST', | |
248 | json: { | |
249 | host: constants.CONFIG.WEBSERVER.HOST, | |
250 | publicKey: cert | |
251 | } | |
252 | } | |
253 | ||
254 | requests.makeRetryRequest(params, function (err, res, body) { | |
255 | if (err) { | |
256 | logger.error('Error with adding %s pod.', pod.host, { error: err }) | |
257 | // Don't break the process | |
258 | return callbackEach() | |
259 | } | |
260 | ||
261 | if (res.statusCode === 200) { | |
262 | const podObj = db.Pod.build({ host: pod.host, publicKey: body.cert }) | |
263 | podObj.save().asCallback(function (err, podCreated) { | |
264 | if (err) { | |
265 | logger.error('Cannot add friend %s pod.', pod.host, { error: err }) | |
266 | return callbackEach() | |
267 | } | |
268 | ||
269 | // Add our videos to the request scheduler | |
270 | sendOwnedVideosToPod(podCreated.id) | |
271 | ||
272 | return callbackEach() | |
273 | }) | |
274 | } else { | |
275 | logger.error('Status not 200 for %s pod.', pod.host) | |
276 | return callbackEach() | |
277 | } | |
278 | }) | |
279 | }, function endRequests () { | |
280 | // Final callback, we've ended all the requests | |
281 | // Now we made new friends, we can re activate the pool of requests | |
282 | db.Request.activate() | |
283 | ||
284 | logger.debug('makeRequestsToWinningPods finished.') | |
285 | return callback() | |
286 | }) | |
287 | } | |
288 | ||
289 | // Wrapper that populate "toIds" argument with all our friends if it is not specified | |
290 | // { type, endpoint, data, toIds, transaction } | |
291 | function createRequest (options, callback) { | |
292 | if (!callback) callback = function () {} | |
293 | if (options.toIds) return _createRequest(options, callback) | |
294 | ||
295 | // If the "toIds" pods is not specified, we send the request to all our friends | |
296 | db.Pod.listAllIds(options.transaction, function (err, podIds) { | |
297 | if (err) { | |
298 | logger.error('Cannot get pod ids', { error: err }) | |
299 | return | |
300 | } | |
301 | ||
302 | const newOptions = Object.assign(options, { toIds: podIds }) | |
303 | return _createRequest(newOptions, callback) | |
304 | }) | |
305 | } | |
306 | ||
307 | // { type, endpoint, data, toIds, transaction } | |
308 | function _createRequest (options, callback) { | |
309 | const type = options.type | |
310 | const endpoint = options.endpoint | |
311 | const data = options.data | |
312 | const toIds = options.toIds | |
313 | const transaction = options.transaction | |
314 | ||
315 | const pods = [] | |
316 | ||
317 | // If there are no destination pods abort | |
318 | if (toIds.length === 0) return callback(null) | |
319 | ||
320 | toIds.forEach(function (toPod) { | |
321 | pods.push(db.Pod.build({ id: toPod })) | |
322 | }) | |
323 | ||
324 | const createQuery = { | |
325 | endpoint, | |
326 | request: { | |
327 | type: type, | |
328 | data: data | |
329 | } | |
330 | } | |
331 | ||
332 | const dbRequestOptions = { | |
333 | transaction | |
334 | } | |
335 | ||
336 | return db.Request.create(createQuery, dbRequestOptions).asCallback(function (err, request) { | |
337 | if (err) return callback(err) | |
338 | ||
339 | return request.setPods(pods, dbRequestOptions).asCallback(callback) | |
340 | }) | |
341 | } | |
342 | ||
343 | function isMe (host) { | |
344 | return host === constants.CONFIG.WEBSERVER.HOST | |
345 | } |