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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 ENDPOINT_ACTIONS = constants.REQUEST_ENDPOINT_ACTIONS[constants.REQUEST_ENDPOINTS.VIDEOS] | |
16 | ||
17 | const friends = { | |
18 | addVideoToFriends, | |
19 | updateVideoToFriends, | |
20 | reportAbuseVideoToFriend, | |
21 | hasFriends, | |
22 | getMyCertificate, | |
23 | makeFriends, | |
24 | quitFriends, | |
25 | removeVideoToFriends, | |
26 | sendOwnedVideosToPod | |
27 | } | |
28 | ||
29 | function addVideoToFriends (videoData, transaction, callback) { | |
30 | const options = { | |
31 | type: ENDPOINT_ACTIONS.ADD, | |
32 | endpoint: constants.REQUEST_ENDPOINTS.VIDEOS, | |
33 | data: videoData, | |
34 | transaction | |
35 | } | |
36 | createRequest(options, callback) | |
37 | } | |
38 | ||
39 | function updateVideoToFriends (videoData, transaction, callback) { | |
40 | const options = { | |
41 | type: ENDPOINT_ACTIONS.UPDATE, | |
42 | endpoint: constants.REQUEST_ENDPOINTS.VIDEOS, | |
43 | data: videoData, | |
44 | transaction | |
45 | } | |
46 | createRequest(options, callback) | |
47 | } | |
48 | ||
49 | function removeVideoToFriends (videoParams) { | |
50 | const options = { | |
51 | type: ENDPOINT_ACTIONS.REMOVE, | |
52 | endpoint: constants.REQUEST_ENDPOINTS.VIDEOS, | |
53 | data: videoParams | |
54 | } | |
55 | createRequest(options) | |
56 | } | |
57 | ||
58 | function reportAbuseVideoToFriend (reportData, video) { | |
59 | const options = { | |
60 | type: ENDPOINT_ACTIONS.REPORT_ABUSE, | |
61 | endpoint: constants.REQUEST_ENDPOINTS.VIDEOS, | |
62 | data: reportData, | |
63 | toIds: [ video.Author.podId ] | |
64 | } | |
65 | createRequest(options) | |
66 | } | |
67 | ||
68 | function hasFriends (callback) { | |
69 | db.Pod.countAll(function (err, count) { | |
70 | if (err) return callback(err) | |
71 | ||
72 | const hasFriends = (count !== 0) | |
73 | callback(null, hasFriends) | |
74 | }) | |
75 | } | |
76 | ||
77 | function getMyCertificate (callback) { | |
78 | fs.readFile(constants.CONFIG.STORAGE.CERT_DIR + 'peertube.pub', 'utf8', callback) | |
79 | } | |
80 | ||
81 | function makeFriends (hosts, callback) { | |
82 | const podsScore = {} | |
83 | ||
84 | logger.info('Make friends!') | |
85 | getMyCertificate(function (err, cert) { | |
86 | if (err) { | |
87 | logger.error('Cannot read public cert.') | |
88 | return callback(err) | |
89 | } | |
90 | ||
91 | eachSeries(hosts, function (host, callbackEach) { | |
92 | computeForeignPodsList(host, podsScore, callbackEach) | |
93 | }, function (err) { | |
94 | if (err) return callback(err) | |
95 | ||
96 | logger.debug('Pods scores computed.', { podsScore: podsScore }) | |
97 | const podsList = computeWinningPods(hosts, podsScore) | |
98 | logger.debug('Pods that we keep.', { podsToKeep: podsList }) | |
99 | ||
100 | makeRequestsToWinningPods(cert, podsList, callback) | |
101 | }) | |
102 | }) | |
103 | } | |
104 | ||
105 | function quitFriends (callback) { | |
106 | // Stop pool requests | |
107 | db.Request.deactivate() | |
108 | ||
109 | waterfall([ | |
110 | function flushRequests (callbackAsync) { | |
111 | db.Request.flush(callbackAsync) | |
112 | }, | |
113 | ||
114 | function getPodsList (callbackAsync) { | |
115 | return db.Pod.list(callbackAsync) | |
116 | }, | |
117 | ||
118 | function announceIQuitMyFriends (pods, callbackAsync) { | |
119 | const requestParams = { | |
120 | method: 'POST', | |
121 | path: '/api/' + constants.API_VERSION + '/pods/remove', | |
122 | sign: true | |
123 | } | |
124 | ||
125 | // Announce we quit them | |
126 | // We don't care if the request fails | |
127 | // The other pod will exclude us automatically after a while | |
128 | eachLimit(pods, constants.REQUESTS_IN_PARALLEL, function (pod, callbackEach) { | |
129 | requestParams.toPod = pod | |
130 | requests.makeSecureRequest(requestParams, callbackEach) | |
131 | }, function (err) { | |
132 | if (err) { | |
133 | logger.error('Some errors while quitting friends.', { err: err }) | |
134 | // Don't stop the process | |
135 | } | |
136 | ||
137 | return callbackAsync(null, pods) | |
138 | }) | |
139 | }, | |
140 | ||
141 | function removePodsFromDB (pods, callbackAsync) { | |
142 | each(pods, function (pod, callbackEach) { | |
143 | pod.destroy().asCallback(callbackEach) | |
144 | }, callbackAsync) | |
145 | } | |
146 | ], function (err) { | |
147 | // Don't forget to re activate the scheduler, even if there was an error | |
148 | db.Request.activate() | |
149 | ||
150 | if (err) return callback(err) | |
151 | ||
152 | logger.info('Removed all remote videos.') | |
153 | return callback(null) | |
154 | }) | |
155 | } | |
156 | ||
157 | function sendOwnedVideosToPod (podId) { | |
158 | db.Video.listOwnedAndPopulateAuthorAndTags(function (err, videosList) { | |
159 | if (err) { | |
160 | logger.error('Cannot get the list of videos we own.') | |
161 | return | |
162 | } | |
163 | ||
164 | videosList.forEach(function (video) { | |
165 | video.toAddRemoteJSON(function (err, remoteVideo) { | |
166 | if (err) { | |
167 | logger.error('Cannot convert video to remote.', { error: err }) | |
168 | // Don't break the process | |
169 | return | |
170 | } | |
171 | ||
172 | const options = { | |
173 | type: 'add', | |
174 | endpoint: constants.REQUEST_ENDPOINTS.VIDEOS, | |
175 | data: remoteVideo, | |
176 | toIds: [ podId ] | |
177 | } | |
178 | createRequest(options) | |
179 | }) | |
180 | }) | |
181 | }) | |
182 | } | |
183 | ||
184 | // --------------------------------------------------------------------------- | |
185 | ||
186 | module.exports = friends | |
187 | ||
188 | // --------------------------------------------------------------------------- | |
189 | ||
190 | function computeForeignPodsList (host, podsScore, callback) { | |
191 | getForeignPodsList(host, function (err, res) { | |
192 | if (err) return callback(err) | |
193 | ||
194 | const foreignPodsList = res.data | |
195 | ||
196 | // Let's give 1 point to the pod we ask the friends list | |
197 | foreignPodsList.push({ host }) | |
198 | ||
199 | foreignPodsList.forEach(function (foreignPod) { | |
200 | const foreignPodHost = foreignPod.host | |
201 | ||
202 | if (podsScore[foreignPodHost]) podsScore[foreignPodHost]++ | |
203 | else podsScore[foreignPodHost] = 1 | |
204 | }) | |
205 | ||
206 | callback() | |
207 | }) | |
208 | } | |
209 | ||
210 | function computeWinningPods (hosts, podsScore) { | |
211 | // Build the list of pods to add | |
212 | // Only add a pod if it exists in more than a half base pods | |
213 | const podsList = [] | |
214 | const baseScore = hosts.length / 2 | |
215 | Object.keys(podsScore).forEach(function (podHost) { | |
216 | // If the pod is not me and with a good score we add it | |
217 | if (isMe(podHost) === false && podsScore[podHost] > baseScore) { | |
218 | podsList.push({ host: podHost }) | |
219 | } | |
220 | }) | |
221 | ||
222 | return podsList | |
223 | } | |
224 | ||
225 | function getForeignPodsList (host, callback) { | |
226 | const path = '/api/' + constants.API_VERSION + '/pods' | |
227 | ||
228 | request.get(constants.REMOTE_SCHEME.HTTP + '://' + host + path, function (err, response, body) { | |
229 | if (err) return callback(err) | |
230 | ||
231 | try { | |
232 | const json = JSON.parse(body) | |
233 | return callback(null, json) | |
234 | } catch (err) { | |
235 | return callback(err) | |
236 | } | |
237 | }) | |
238 | } | |
239 | ||
240 | function makeRequestsToWinningPods (cert, podsList, callback) { | |
241 | // Stop pool requests | |
242 | db.Request.deactivate() | |
243 | // Flush pool requests | |
244 | db.Request.forceSend() | |
245 | ||
246 | eachLimit(podsList, constants.REQUESTS_IN_PARALLEL, function (pod, callbackEach) { | |
247 | const params = { | |
248 | url: constants.REMOTE_SCHEME.HTTP + '://' + pod.host + '/api/' + constants.API_VERSION + '/pods/', | |
249 | method: 'POST', | |
250 | json: { | |
251 | host: constants.CONFIG.WEBSERVER.HOST, | |
252 | publicKey: cert | |
253 | } | |
254 | } | |
255 | ||
256 | requests.makeRetryRequest(params, function (err, res, body) { | |
257 | if (err) { | |
258 | logger.error('Error with adding %s pod.', pod.host, { error: err }) | |
259 | // Don't break the process | |
260 | return callbackEach() | |
261 | } | |
262 | ||
263 | if (res.statusCode === 200) { | |
264 | const podObj = db.Pod.build({ host: pod.host, publicKey: body.cert }) | |
265 | podObj.save().asCallback(function (err, podCreated) { | |
266 | if (err) { | |
267 | logger.error('Cannot add friend %s pod.', pod.host, { error: err }) | |
268 | return callbackEach() | |
269 | } | |
270 | ||
271 | // Add our videos to the request scheduler | |
272 | sendOwnedVideosToPod(podCreated.id) | |
273 | ||
274 | return callbackEach() | |
275 | }) | |
276 | } else { | |
277 | logger.error('Status not 200 for %s pod.', pod.host) | |
278 | return callbackEach() | |
279 | } | |
280 | }) | |
281 | }, function endRequests () { | |
282 | // Final callback, we've ended all the requests | |
283 | // Now we made new friends, we can re activate the pool of requests | |
284 | db.Request.activate() | |
285 | ||
286 | logger.debug('makeRequestsToWinningPods finished.') | |
287 | return callback() | |
288 | }) | |
289 | } | |
290 | ||
291 | // Wrapper that populate "toIds" argument with all our friends if it is not specified | |
292 | // { type, endpoint, data, toIds, transaction } | |
293 | function createRequest (options, callback) { | |
294 | if (!callback) callback = function () {} | |
295 | if (options.toIds) return _createRequest(options, callback) | |
296 | ||
297 | // If the "toIds" pods is not specified, we send the request to all our friends | |
298 | db.Pod.listAllIds(options.transaction, function (err, podIds) { | |
299 | if (err) { | |
300 | logger.error('Cannot get pod ids', { error: err }) | |
301 | return | |
302 | } | |
303 | ||
304 | const newOptions = Object.assign(options, { toIds: podIds }) | |
305 | return _createRequest(newOptions, callback) | |
306 | }) | |
307 | } | |
308 | ||
309 | // { type, endpoint, data, toIds, transaction } | |
310 | function _createRequest (options, callback) { | |
311 | const type = options.type | |
312 | const endpoint = options.endpoint | |
313 | const data = options.data | |
314 | const toIds = options.toIds | |
315 | const transaction = options.transaction | |
316 | ||
317 | const pods = [] | |
318 | ||
319 | // If there are no destination pods abort | |
320 | if (toIds.length === 0) return callback(null) | |
321 | ||
322 | toIds.forEach(function (toPod) { | |
323 | pods.push(db.Pod.build({ id: toPod })) | |
324 | }) | |
325 | ||
326 | const createQuery = { | |
327 | endpoint, | |
328 | request: { | |
329 | type: type, | |
330 | data: data | |
331 | } | |
332 | } | |
333 | ||
334 | const dbRequestOptions = { | |
335 | transaction | |
336 | } | |
337 | ||
338 | return db.Request.create(createQuery, dbRequestOptions).asCallback(function (err, request) { | |
339 | if (err) return callback(err) | |
340 | ||
341 | return request.setPods(pods, dbRequestOptions).asCallback(callback) | |
342 | }) | |
343 | } | |
344 | ||
345 | function isMe (host) { | |
346 | return host === constants.CONFIG.WEBSERVER.HOST | |
347 | } |