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