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1 | import { each, eachLimit, eachSeries, series, waterfall } from 'async' | |
2 | import * as request from 'request' | |
3 | import * as Sequelize from 'sequelize' | |
4 | ||
5 | import { database as db } from '../initializers/database' | |
6 | import { | |
7 | API_VERSION, | |
8 | CONFIG, | |
9 | REQUESTS_IN_PARALLEL, | |
10 | REQUEST_ENDPOINTS, | |
11 | REQUEST_ENDPOINT_ACTIONS, | |
12 | REMOTE_SCHEME | |
13 | } from '../initializers' | |
14 | import { | |
15 | logger, | |
16 | getMyPublicCert, | |
17 | makeSecureRequest, | |
18 | makeRetryRequest, | |
19 | createEmptyCallback | |
20 | } from '../helpers' | |
21 | import { | |
22 | RequestScheduler, | |
23 | RequestSchedulerOptions, | |
24 | ||
25 | RequestVideoQaduScheduler, | |
26 | RequestVideoQaduSchedulerOptions, | |
27 | ||
28 | RequestVideoEventScheduler, | |
29 | RequestVideoEventSchedulerOptions | |
30 | } from './request' | |
31 | import { PodInstance, VideoInstance } from '../models' | |
32 | ||
33 | type QaduParam = { videoId: string, type: string } | |
34 | type EventParam = { videoId: string, type: string } | |
35 | ||
36 | const ENDPOINT_ACTIONS = REQUEST_ENDPOINT_ACTIONS[REQUEST_ENDPOINTS.VIDEOS] | |
37 | ||
38 | const requestScheduler = new RequestScheduler() | |
39 | const requestVideoQaduScheduler = new RequestVideoQaduScheduler() | |
40 | const requestVideoEventScheduler = new RequestVideoEventScheduler() | |
41 | ||
42 | function activateSchedulers () { | |
43 | requestScheduler.activate() | |
44 | requestVideoQaduScheduler.activate() | |
45 | requestVideoEventScheduler.activate() | |
46 | } | |
47 | ||
48 | function addVideoToFriends (videoData: Object, transaction: Sequelize.Transaction, callback: (err: Error) => void) { | |
49 | const options = { | |
50 | type: ENDPOINT_ACTIONS.ADD, | |
51 | endpoint: REQUEST_ENDPOINTS.VIDEOS, | |
52 | data: videoData, | |
53 | transaction | |
54 | } | |
55 | createRequest(options, callback) | |
56 | } | |
57 | ||
58 | function updateVideoToFriends (videoData: Object, transaction: Sequelize.Transaction, callback: (err: Error) => void) { | |
59 | const options = { | |
60 | type: ENDPOINT_ACTIONS.UPDATE, | |
61 | endpoint: REQUEST_ENDPOINTS.VIDEOS, | |
62 | data: videoData, | |
63 | transaction | |
64 | } | |
65 | createRequest(options, callback) | |
66 | } | |
67 | ||
68 | function removeVideoToFriends (videoParams: Object) { | |
69 | const options = { | |
70 | type: ENDPOINT_ACTIONS.REMOVE, | |
71 | endpoint: REQUEST_ENDPOINTS.VIDEOS, | |
72 | data: videoParams, | |
73 | transaction: null | |
74 | } | |
75 | createRequest(options) | |
76 | } | |
77 | ||
78 | function reportAbuseVideoToFriend (reportData: Object, video: VideoInstance) { | |
79 | const options = { | |
80 | type: ENDPOINT_ACTIONS.REPORT_ABUSE, | |
81 | endpoint: REQUEST_ENDPOINTS.VIDEOS, | |
82 | data: reportData, | |
83 | toIds: [ video.Author.podId ], | |
84 | transaction: null | |
85 | } | |
86 | createRequest(options) | |
87 | } | |
88 | ||
89 | function quickAndDirtyUpdateVideoToFriends (qaduParam: QaduParam, transaction?: Sequelize.Transaction, callback?: (err: Error) => void) { | |
90 | const options = { | |
91 | videoId: qaduParam.videoId, | |
92 | type: qaduParam.type, | |
93 | transaction | |
94 | } | |
95 | return createVideoQaduRequest(options, callback) | |
96 | } | |
97 | ||
98 | function quickAndDirtyUpdatesVideoToFriends (qadusParams: QaduParam[], transaction: Sequelize.Transaction, finalCallback: (err: Error) => void) { | |
99 | const tasks = [] | |
100 | ||
101 | qadusParams.forEach(function (qaduParams) { | |
102 | const fun = function (callback) { | |
103 | quickAndDirtyUpdateVideoToFriends(qaduParams, transaction, callback) | |
104 | } | |
105 | ||
106 | tasks.push(fun) | |
107 | }) | |
108 | ||
109 | series(tasks, finalCallback) | |
110 | } | |
111 | ||
112 | function addEventToRemoteVideo (eventParam: EventParam, transaction?: Sequelize.Transaction, callback?: (err: Error) => void) { | |
113 | const options = { | |
114 | videoId: eventParam.videoId, | |
115 | type: eventParam.type, | |
116 | transaction | |
117 | } | |
118 | createVideoEventRequest(options, callback) | |
119 | } | |
120 | ||
121 | function addEventsToRemoteVideo (eventsParams: EventParam[], transaction: Sequelize.Transaction, finalCallback: (err: Error) => void) { | |
122 | const tasks = [] | |
123 | ||
124 | eventsParams.forEach(function (eventParams) { | |
125 | const fun = function (callback) { | |
126 | addEventToRemoteVideo(eventParams, transaction, callback) | |
127 | } | |
128 | ||
129 | tasks.push(fun) | |
130 | }) | |
131 | ||
132 | series(tasks, finalCallback) | |
133 | } | |
134 | ||
135 | function hasFriends (callback: (err: Error, hasFriends?: boolean) => void) { | |
136 | db.Pod.countAll(function (err, count) { | |
137 | if (err) return callback(err) | |
138 | ||
139 | const hasFriends = (count !== 0) | |
140 | callback(null, hasFriends) | |
141 | }) | |
142 | } | |
143 | ||
144 | function makeFriends (hosts: string[], callback: (err: Error) => void) { | |
145 | const podsScore = {} | |
146 | ||
147 | logger.info('Make friends!') | |
148 | getMyPublicCert(function (err, cert) { | |
149 | if (err) { | |
150 | logger.error('Cannot read public cert.') | |
151 | return callback(err) | |
152 | } | |
153 | ||
154 | eachSeries(hosts, function (host, callbackEach) { | |
155 | computeForeignPodsList(host, podsScore, callbackEach) | |
156 | }, function (err: Error) { | |
157 | if (err) return callback(err) | |
158 | ||
159 | logger.debug('Pods scores computed.', { podsScore: podsScore }) | |
160 | const podsList = computeWinningPods(hosts, podsScore) | |
161 | logger.debug('Pods that we keep.', { podsToKeep: podsList }) | |
162 | ||
163 | makeRequestsToWinningPods(cert, podsList, callback) | |
164 | }) | |
165 | }) | |
166 | } | |
167 | ||
168 | function quitFriends (callback: (err: Error) => void) { | |
169 | // Stop pool requests | |
170 | requestScheduler.deactivate() | |
171 | ||
172 | waterfall([ | |
173 | function flushRequests (callbackAsync) { | |
174 | requestScheduler.flush(err => callbackAsync(err)) | |
175 | }, | |
176 | ||
177 | function flushVideoQaduRequests (callbackAsync) { | |
178 | requestVideoQaduScheduler.flush(err => callbackAsync(err)) | |
179 | }, | |
180 | ||
181 | function getPodsList (callbackAsync) { | |
182 | return db.Pod.list(callbackAsync) | |
183 | }, | |
184 | ||
185 | function announceIQuitMyFriends (pods, callbackAsync) { | |
186 | const requestParams = { | |
187 | method: 'POST' as 'POST', | |
188 | path: '/api/' + API_VERSION + '/remote/pods/remove', | |
189 | sign: true, | |
190 | toPod: null | |
191 | } | |
192 | ||
193 | // Announce we quit them | |
194 | // We don't care if the request fails | |
195 | // The other pod will exclude us automatically after a while | |
196 | eachLimit(pods, REQUESTS_IN_PARALLEL, function (pod, callbackEach) { | |
197 | requestParams.toPod = pod | |
198 | makeSecureRequest(requestParams, callbackEach) | |
199 | }, function (err) { | |
200 | if (err) { | |
201 | logger.error('Some errors while quitting friends.', { err: err }) | |
202 | // Don't stop the process | |
203 | } | |
204 | ||
205 | return callbackAsync(null, pods) | |
206 | }) | |
207 | }, | |
208 | ||
209 | function removePodsFromDB (pods, callbackAsync) { | |
210 | each(pods, function (pod: any, callbackEach) { | |
211 | pod.destroy().asCallback(callbackEach) | |
212 | }, callbackAsync) | |
213 | } | |
214 | ], function (err: Error) { | |
215 | // Don't forget to re activate the scheduler, even if there was an error | |
216 | requestScheduler.activate() | |
217 | ||
218 | if (err) return callback(err) | |
219 | ||
220 | logger.info('Removed all remote videos.') | |
221 | return callback(null) | |
222 | }) | |
223 | } | |
224 | ||
225 | function sendOwnedVideosToPod (podId: number) { | |
226 | db.Video.listOwnedAndPopulateAuthorAndTags(function (err, videosList) { | |
227 | if (err) { | |
228 | logger.error('Cannot get the list of videos we own.') | |
229 | return | |
230 | } | |
231 | ||
232 | videosList.forEach(function (video) { | |
233 | video.toAddRemoteJSON(function (err, remoteVideo) { | |
234 | if (err) { | |
235 | logger.error('Cannot convert video to remote.', { error: err }) | |
236 | // Don't break the process | |
237 | return | |
238 | } | |
239 | ||
240 | const options = { | |
241 | type: 'add', | |
242 | endpoint: REQUEST_ENDPOINTS.VIDEOS, | |
243 | data: remoteVideo, | |
244 | toIds: [ podId ], | |
245 | transaction: null | |
246 | } | |
247 | createRequest(options) | |
248 | }) | |
249 | }) | |
250 | }) | |
251 | } | |
252 | ||
253 | function getRequestScheduler () { | |
254 | return requestScheduler | |
255 | } | |
256 | ||
257 | function getRequestVideoQaduScheduler () { | |
258 | return requestVideoQaduScheduler | |
259 | } | |
260 | ||
261 | function getRequestVideoEventScheduler () { | |
262 | return requestVideoEventScheduler | |
263 | } | |
264 | ||
265 | // --------------------------------------------------------------------------- | |
266 | ||
267 | export { | |
268 | activateSchedulers, | |
269 | addVideoToFriends, | |
270 | updateVideoToFriends, | |
271 | reportAbuseVideoToFriend, | |
272 | quickAndDirtyUpdateVideoToFriends, | |
273 | quickAndDirtyUpdatesVideoToFriends, | |
274 | addEventToRemoteVideo, | |
275 | addEventsToRemoteVideo, | |
276 | hasFriends, | |
277 | makeFriends, | |
278 | quitFriends, | |
279 | removeVideoToFriends, | |
280 | sendOwnedVideosToPod, | |
281 | getRequestScheduler, | |
282 | getRequestVideoQaduScheduler, | |
283 | getRequestVideoEventScheduler | |
284 | } | |
285 | ||
286 | // --------------------------------------------------------------------------- | |
287 | ||
288 | function computeForeignPodsList (host: string, podsScore: { [ host: string ]: number }, callback: (err: Error) => void) { | |
289 | getForeignPodsList(host, function (err, res) { | |
290 | if (err) return callback(err) | |
291 | ||
292 | const foreignPodsList = res.data | |
293 | ||
294 | // Let's give 1 point to the pod we ask the friends list | |
295 | foreignPodsList.push({ host }) | |
296 | ||
297 | foreignPodsList.forEach(function (foreignPod) { | |
298 | const foreignPodHost = foreignPod.host | |
299 | ||
300 | if (podsScore[foreignPodHost]) podsScore[foreignPodHost]++ | |
301 | else podsScore[foreignPodHost] = 1 | |
302 | }) | |
303 | ||
304 | return callback(null) | |
305 | }) | |
306 | } | |
307 | ||
308 | function computeWinningPods (hosts: string[], podsScore: { [ host: string ]: number }) { | |
309 | // Build the list of pods to add | |
310 | // Only add a pod if it exists in more than a half base pods | |
311 | const podsList = [] | |
312 | const baseScore = hosts.length / 2 | |
313 | ||
314 | Object.keys(podsScore).forEach(function (podHost) { | |
315 | // If the pod is not me and with a good score we add it | |
316 | if (isMe(podHost) === false && podsScore[podHost] > baseScore) { | |
317 | podsList.push({ host: podHost }) | |
318 | } | |
319 | }) | |
320 | ||
321 | return podsList | |
322 | } | |
323 | ||
324 | function getForeignPodsList (host: string, callback: (err: Error, foreignPodsList?: any) => void) { | |
325 | const path = '/api/' + API_VERSION + '/pods' | |
326 | ||
327 | request.get(REMOTE_SCHEME.HTTP + '://' + host + path, function (err, response, body) { | |
328 | if (err) return callback(err) | |
329 | ||
330 | try { | |
331 | const json = JSON.parse(body) | |
332 | return callback(null, json) | |
333 | } catch (err) { | |
334 | return callback(err) | |
335 | } | |
336 | }) | |
337 | } | |
338 | ||
339 | function makeRequestsToWinningPods (cert: string, podsList: PodInstance[], callback: (err: Error) => void) { | |
340 | // Stop pool requests | |
341 | requestScheduler.deactivate() | |
342 | // Flush pool requests | |
343 | requestScheduler.forceSend() | |
344 | ||
345 | eachLimit(podsList, REQUESTS_IN_PARALLEL, function (pod: PodInstance, callbackEach) { | |
346 | const params = { | |
347 | url: REMOTE_SCHEME.HTTP + '://' + pod.host + '/api/' + API_VERSION + '/pods/', | |
348 | method: 'POST' as 'POST', | |
349 | json: { | |
350 | host: CONFIG.WEBSERVER.HOST, | |
351 | email: CONFIG.ADMIN.EMAIL, | |
352 | publicKey: cert | |
353 | } | |
354 | } | |
355 | ||
356 | makeRetryRequest(params, function (err, res, body: { cert: string, email: string }) { | |
357 | if (err) { | |
358 | logger.error('Error with adding %s pod.', pod.host, { error: err }) | |
359 | // Don't break the process | |
360 | return callbackEach() | |
361 | } | |
362 | ||
363 | if (res.statusCode === 200) { | |
364 | const podObj = db.Pod.build({ host: pod.host, publicKey: body.cert, email: body.email }) | |
365 | podObj.save().asCallback(function (err, podCreated) { | |
366 | if (err) { | |
367 | logger.error('Cannot add friend %s pod.', pod.host, { error: err }) | |
368 | return callbackEach() | |
369 | } | |
370 | ||
371 | // Add our videos to the request scheduler | |
372 | sendOwnedVideosToPod(podCreated.id) | |
373 | ||
374 | return callbackEach() | |
375 | }) | |
376 | } else { | |
377 | logger.error('Status not 200 for %s pod.', pod.host) | |
378 | return callbackEach() | |
379 | } | |
380 | }) | |
381 | }, function endRequests () { | |
382 | // Final callback, we've ended all the requests | |
383 | // Now we made new friends, we can re activate the pool of requests | |
384 | requestScheduler.activate() | |
385 | ||
386 | logger.debug('makeRequestsToWinningPods finished.') | |
387 | return callback(null) | |
388 | }) | |
389 | } | |
390 | ||
391 | // Wrapper that populate "toIds" argument with all our friends if it is not specified | |
392 | type CreateRequestOptions = { | |
393 | type: string | |
394 | endpoint: string | |
395 | data: Object | |
396 | toIds?: number[] | |
397 | transaction: Sequelize.Transaction | |
398 | } | |
399 | function createRequest (options: CreateRequestOptions, callback?: (err: Error) => void) { | |
400 | if (!callback) callback = function () { /* empty */ } | |
401 | ||
402 | if (options.toIds !== undefined) return requestScheduler.createRequest(options as RequestSchedulerOptions, callback) | |
403 | ||
404 | // If the "toIds" pods is not specified, we send the request to all our friends | |
405 | db.Pod.listAllIds(options.transaction, function (err, podIds) { | |
406 | if (err) { | |
407 | logger.error('Cannot get pod ids', { error: err }) | |
408 | return | |
409 | } | |
410 | ||
411 | const newOptions = Object.assign(options, { toIds: podIds }) | |
412 | return requestScheduler.createRequest(newOptions, callback) | |
413 | }) | |
414 | } | |
415 | ||
416 | function createVideoQaduRequest (options: RequestVideoQaduSchedulerOptions, callback: (err: Error) => void) { | |
417 | if (!callback) callback = createEmptyCallback() | |
418 | ||
419 | requestVideoQaduScheduler.createRequest(options, callback) | |
420 | } | |
421 | ||
422 | function createVideoEventRequest (options: RequestVideoEventSchedulerOptions, callback: (err: Error) => void) { | |
423 | if (!callback) callback = createEmptyCallback() | |
424 | ||
425 | requestVideoEventScheduler.createRequest(options, callback) | |
426 | } | |
427 | ||
428 | function isMe (host: string) { | |
429 | return host === CONFIG.WEBSERVER.HOST | |
430 | } |