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authorChocobozzz <florian.bigard@gmail.com>2017-02-18 10:29:36 +0100
committerChocobozzz <florian.bigard@gmail.com>2017-02-18 10:29:36 +0100
commitc1a7ab7f04fdb1601cf1e41c4e372dbd3c81f3de (patch)
tree5d721432dcc25f43ebd72b12f675d4e208faf616 /server/models
parent361b7df2a257d1c44ec1d79128a9065b563090d8 (diff)
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Server: use a request scheduler object instance for friends
communication
Diffstat (limited to 'server/models')
-rw-r--r--server/models/request.js208
1 files changed, 27 insertions, 181 deletions
diff --git a/server/models/request.js b/server/models/request.js
index baa26fc1b..ca616d130 100644
--- a/server/models/request.js
+++ b/server/models/request.js
@@ -1,16 +1,11 @@
1'use strict' 1'use strict'
2 2
3const each = require('async/each') 3const each = require('async/each')
4const eachLimit = require('async/eachLimit')
5const waterfall = require('async/waterfall') 4const waterfall = require('async/waterfall')
6const values = require('lodash/values') 5const values = require('lodash/values')
7 6
8const constants = require('../initializers/constants') 7const constants = require('../initializers/constants')
9const logger = require('../helpers/logger') 8const logger = require('../helpers/logger')
10const requests = require('../helpers/requests')
11
12let timer = null
13let lastRequestTimestamp = 0
14 9
15// --------------------------------------------------------------------------- 10// ---------------------------------------------------------------------------
16 11
@@ -30,12 +25,13 @@ module.exports = function (sequelize, DataTypes) {
30 classMethods: { 25 classMethods: {
31 associate, 26 associate,
32 27
33 activate, 28 listWithLimitAndRandom,
29
34 countTotalRequests, 30 countTotalRequests,
35 deactivate, 31 removeBadPods,
36 flush, 32 updatePodsScore,
37 forceSend, 33 removeAll,
38 remainingMilliSeconds 34 removeWithEmptyTo
39 } 35 }
40 } 36 }
41 ) 37 )
@@ -56,17 +52,6 @@ function associate (models) {
56 }) 52 })
57} 53}
58 54
59function activate () {
60 logger.info('Requests scheduler activated.')
61 lastRequestTimestamp = Date.now()
62
63 const self = this
64 timer = setInterval(function () {
65 lastRequestTimestamp = Date.now()
66 makeRequests.call(self)
67 }, constants.REQUESTS_INTERVAL)
68}
69
70function countTotalRequests (callback) { 55function countTotalRequests (callback) {
71 const query = { 56 const query = {
72 include: [ this.sequelize.models.Pod ] 57 include: [ this.sequelize.models.Pod ]
@@ -75,147 +60,6 @@ function countTotalRequests (callback) {
75 return this.count(query).asCallback(callback) 60 return this.count(query).asCallback(callback)
76} 61}
77 62
78function deactivate () {
79 logger.info('Requests scheduler deactivated.')
80 clearInterval(timer)
81 timer = null
82}
83
84function flush (callback) {
85 removeAll.call(this, function (err) {
86 if (err) logger.error('Cannot flush the requests.', { error: err })
87
88 return callback(err)
89 })
90}
91
92function forceSend () {
93 logger.info('Force requests scheduler sending.')
94 makeRequests.call(this)
95}
96
97function remainingMilliSeconds () {
98 if (timer === null) return -1
99
100 return constants.REQUESTS_INTERVAL - (Date.now() - lastRequestTimestamp)
101}
102
103// ---------------------------------------------------------------------------
104
105// Make a requests to friends of a certain type
106function makeRequest (toPod, requestEndpoint, requestsToMake, callback) {
107 if (!callback) callback = function () {}
108
109 const params = {
110 toPod: toPod,
111 sign: true, // Prove our identity
112 method: 'POST',
113 path: '/api/' + constants.API_VERSION + '/remote/' + requestEndpoint,
114 data: requestsToMake // Requests we need to make
115 }
116
117 // Make multiple retry requests to all of pods
118 // The function fire some useful callbacks
119 requests.makeSecureRequest(params, function (err, res) {
120 if (err || (res.statusCode !== 200 && res.statusCode !== 201 && res.statusCode !== 204)) {
121 err = err ? err.message : 'Status code not 20x : ' + res.statusCode
122 logger.error('Error sending secure request to %s pod.', toPod.host, { error: err })
123
124 return callback(false)
125 }
126
127 return callback(true)
128 })
129}
130
131// Make all the requests of the scheduler
132function makeRequests () {
133 const self = this
134 const RequestToPod = this.sequelize.models.RequestToPod
135
136 // We limit the size of the requests
137 // We don't want to stuck with the same failing requests so we get a random list
138 listWithLimitAndRandom.call(self, constants.REQUESTS_LIMIT_PODS, constants.REQUESTS_LIMIT_PER_POD, function (err, requests) {
139 if (err) {
140 logger.error('Cannot get the list of requests.', { err: err })
141 return // Abort
142 }
143
144 // If there are no requests, abort
145 if (requests.length === 0) {
146 logger.info('No requests to make.')
147 return
148 }
149
150 // We want to group requests by destinations pod and endpoint
151 const requestsToMakeGrouped = buildRequestObjects(requests)
152
153 logger.info('Making requests to friends.')
154
155 const goodPods = []
156 const badPods = []
157
158 eachLimit(Object.keys(requestsToMakeGrouped), constants.REQUESTS_IN_PARALLEL, function (hashKey, callbackEach) {
159 const requestToMake = requestsToMakeGrouped[hashKey]
160 const toPod = requestToMake.toPod
161
162 // Maybe the pod is not our friend anymore so simply remove it
163 if (!toPod) {
164 const requestIdsToDelete = requestToMake.ids
165
166 logger.info('Removing %d requests of unexisting pod %s.', requestIdsToDelete.length, requestToMake.toPod.id)
167 return RequestToPod.removePodOf(requestIdsToDelete, requestToMake.toPod.id, callbackEach)
168 }
169
170 makeRequest(toPod, requestToMake.endpoint, requestToMake.datas, function (success) {
171 if (success === false) {
172 badPods.push(requestToMake.toPod.id)
173 return callbackEach()
174 }
175
176 logger.debug('Removing requests for pod %s.', requestToMake.toPod.id, { requestsIds: requestToMake.ids })
177 goodPods.push(requestToMake.toPod.id)
178
179 // Remove the pod id of these request ids
180 RequestToPod.removePodOf(requestToMake.ids, requestToMake.toPod.id, callbackEach)
181 })
182 }, function () {
183 // All the requests were made, we update the pods score
184 updatePodsScore.call(self, goodPods, badPods)
185 // Flush requests with no pod
186 removeWithEmptyTo.call(self, function (err) {
187 if (err) logger.error('Error when removing requests with no pods.', { error: err })
188 })
189 })
190 })
191}
192
193function buildRequestObjects (requests) {
194 const requestsToMakeGrouped = {}
195
196 Object.keys(requests).forEach(function (toPodId) {
197 requests[toPodId].forEach(function (data) {
198 const request = data.request
199 const pod = data.pod
200 const hashKey = toPodId + request.endpoint
201
202 if (!requestsToMakeGrouped[hashKey]) {
203 requestsToMakeGrouped[hashKey] = {
204 toPod: pod,
205 endpoint: request.endpoint,
206 ids: [], // request ids, to delete them from the DB in the future
207 datas: [] // requests data,
208 }
209 }
210
211 requestsToMakeGrouped[hashKey].ids.push(request.id)
212 requestsToMakeGrouped[hashKey].datas.push(request.request)
213 })
214 })
215
216 return requestsToMakeGrouped
217}
218
219// Remove pods with a score of 0 (too many requests where they were unreachable) 63// Remove pods with a score of 0 (too many requests where they were unreachable)
220function removeBadPods () { 64function removeBadPods () {
221 const self = this 65 const self = this
@@ -307,25 +151,6 @@ function listWithLimitAndRandom (limitPods, limitRequestsPerPod, callback) {
307 }) 151 })
308} 152}
309 153
310function groupAndTruncateRequests (requests, limitRequestsPerPod) {
311 const requestsGrouped = {}
312
313 requests.forEach(function (request) {
314 request.Pods.forEach(function (pod) {
315 if (!requestsGrouped[pod.id]) requestsGrouped[pod.id] = []
316
317 if (requestsGrouped[pod.id].length < limitRequestsPerPod) {
318 requestsGrouped[pod.id].push({
319 request,
320 pod
321 })
322 }
323 })
324 })
325
326 return requestsGrouped
327}
328
329function removeAll (callback) { 154function removeAll (callback) {
330 // Delete all requests 155 // Delete all requests
331 this.truncate({ cascade: true }).asCallback(callback) 156 this.truncate({ cascade: true }).asCallback(callback)
@@ -346,3 +171,24 @@ function removeWithEmptyTo (callback) {
346 171
347 this.destroy(query).asCallback(callback) 172 this.destroy(query).asCallback(callback)
348} 173}
174
175// ---------------------------------------------------------------------------
176
177function groupAndTruncateRequests (requests, limitRequestsPerPod) {
178 const requestsGrouped = {}
179
180 requests.forEach(function (request) {
181 request.Pods.forEach(function (pod) {
182 if (!requestsGrouped[pod.id]) requestsGrouped[pod.id] = []
183
184 if (requestsGrouped[pod.id].length < limitRequestsPerPod) {
185 requestsGrouped[pod.id].push({
186 request,
187 pod
188 })
189 }
190 })
191 })
192
193 return requestsGrouped
194}