aboutsummaryrefslogtreecommitdiffhomepage
path: root/server/lib/base-request-scheduler.js
diff options
context:
space:
mode:
Diffstat (limited to 'server/lib/base-request-scheduler.js')
-rw-r--r--server/lib/base-request-scheduler.js140
1 files changed, 140 insertions, 0 deletions
diff --git a/server/lib/base-request-scheduler.js b/server/lib/base-request-scheduler.js
new file mode 100644
index 000000000..d15680c25
--- /dev/null
+++ b/server/lib/base-request-scheduler.js
@@ -0,0 +1,140 @@
1'use strict'
2
3const eachLimit = require('async/eachLimit')
4
5const constants = require('../initializers/constants')
6const db = require('../initializers/database')
7const logger = require('../helpers/logger')
8const requests = require('../helpers/requests')
9
10module.exports = class BaseRequestScheduler {
11
12 constructor (options) {
13 this.lastRequestTimestamp = 0
14 this.timer = null
15 }
16
17 activate () {
18 logger.info('Requests scheduler activated.')
19 this.lastRequestTimestamp = Date.now()
20
21 this.timer = setInterval(() => {
22 this.lastRequestTimestamp = Date.now()
23 this.makeRequests()
24 }, constants.REQUESTS_INTERVAL)
25 }
26
27 deactivate () {
28 logger.info('Requests scheduler deactivated.')
29 clearInterval(this.timer)
30 this.timer = null
31 }
32
33 forceSend () {
34 logger.info('Force requests scheduler sending.')
35 this.makeRequests()
36 }
37
38 remainingMilliSeconds () {
39 if (this.timer === null) return -1
40
41 return constants.REQUESTS_INTERVAL - (Date.now() - this.lastRequestTimestamp)
42 }
43
44 // ---------------------------------------------------------------------------
45
46 // Make a requests to friends of a certain type
47 makeRequest (toPod, requestEndpoint, requestsToMake, callback) {
48 if (!callback) callback = function () {}
49
50 const params = {
51 toPod: toPod,
52 sign: true, // Prove our identity
53 method: 'POST',
54 path: '/api/' + constants.API_VERSION + '/remote/' + requestEndpoint,
55 data: requestsToMake // Requests we need to make
56 }
57
58 // Make multiple retry requests to all of pods
59 // The function fire some useful callbacks
60 requests.makeSecureRequest(params, (err, res) => {
61 if (err || (res.statusCode !== 200 && res.statusCode !== 201 && res.statusCode !== 204)) {
62 err = err ? err.message : 'Status code not 20x : ' + res.statusCode
63 logger.error('Error sending secure request to %s pod.', toPod.host, { error: err })
64
65 return callback(false)
66 }
67
68 return callback(true)
69 })
70 }
71
72 // Make all the requests of the scheduler
73 makeRequests () {
74 this.getRequestModel().listWithLimitAndRandom(this.limitPods, this.limitPerPod, (err, requests) => {
75 if (err) {
76 logger.error('Cannot get the list of "%s".', this.description, { err: err })
77 return // Abort
78 }
79
80 // If there are no requests, abort
81 if (requests.length === 0) {
82 logger.info('No "%s" to make.', this.description)
83 return
84 }
85
86 // We want to group requests by destinations pod and endpoint
87 const requestsToMakeGrouped = this.buildRequestObjects(requests)
88
89 logger.info('Making "%s" to friends.', this.description)
90
91 const goodPods = []
92 const badPods = []
93
94 eachLimit(Object.keys(requestsToMakeGrouped), constants.REQUESTS_IN_PARALLEL, (hashKey, callbackEach) => {
95 const requestToMake = requestsToMakeGrouped[hashKey]
96 const toPod = requestToMake.toPod
97
98 // Maybe the pod is not our friend anymore so simply remove it
99 if (!toPod) {
100 const requestIdsToDelete = requestToMake.ids
101
102 logger.info('Removing %d "%s" of unexisting pod %s.', requestIdsToDelete.length, this.description, requestToMake.toPod.id)
103 return this.getRequestToPodModel().removePodOf(requestIdsToDelete, requestToMake.toPod.id, callbackEach)
104 }
105
106 this.makeRequest(toPod, requestToMake.endpoint, requestToMake.datas, (success) => {
107 if (success === false) {
108 badPods.push(requestToMake.toPod.id)
109 return callbackEach()
110 }
111
112 logger.debug('Removing requests for pod %s.', requestToMake.toPod.id, { requestsIds: requestToMake.ids })
113 goodPods.push(requestToMake.toPod.id)
114
115 // Remove the pod id of these request ids
116 this.getRequestToPodModel().removeByRequestIdsAndPod(requestToMake.ids, requestToMake.toPod.id, callbackEach)
117
118 this.afterRequestHook()
119 })
120 }, () => {
121 // All the requests were made, we update the pods score
122 db.Pod.updatePodsScore(goodPods, badPods)
123
124 this.afterRequestsHook()
125 })
126 })
127 }
128
129 flush (callback) {
130 this.getRequestModel().removeAll(callback)
131 }
132
133 afterRequestHook () {
134 // Nothing to do, let children reimplement it
135 }
136
137 afterRequestsHook () {
138 // Nothing to do, let children reimplement it
139 }
140}