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9e167724 C |
1 | 'use strict' |
2 | ||
3 | const eachLimit = require('async/eachLimit') | |
4 | ||
5 | const constants = require('../initializers/constants') | |
6 | const db = require('../initializers/database') | |
7 | const logger = require('../helpers/logger') | |
8 | const requests = require('../helpers/requests') | |
9 | ||
10 | module.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 | } |