141 lines
4.3 KiB
JavaScript
141 lines
4.3 KiB
JavaScript
'use strict'
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const eachLimit = require('async/eachLimit')
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const constants = require('../initializers/constants')
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const db = require('../initializers/database')
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const logger = require('../helpers/logger')
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const requests = require('../helpers/requests')
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module.exports = class BaseRequestScheduler {
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constructor (options) {
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this.lastRequestTimestamp = 0
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this.timer = null
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}
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activate () {
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logger.info('Requests scheduler activated.')
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this.lastRequestTimestamp = Date.now()
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this.timer = setInterval(() => {
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this.lastRequestTimestamp = Date.now()
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this.makeRequests()
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}, constants.REQUESTS_INTERVAL)
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}
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deactivate () {
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logger.info('Requests scheduler deactivated.')
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clearInterval(this.timer)
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this.timer = null
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}
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forceSend () {
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logger.info('Force requests scheduler sending.')
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this.makeRequests()
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}
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remainingMilliSeconds () {
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if (this.timer === null) return -1
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return constants.REQUESTS_INTERVAL - (Date.now() - this.lastRequestTimestamp)
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}
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// ---------------------------------------------------------------------------
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// Make a requests to friends of a certain type
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makeRequest (toPod, requestEndpoint, requestsToMake, callback) {
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if (!callback) callback = function () {}
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const params = {
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toPod: toPod,
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sign: true, // Prove our identity
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method: 'POST',
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path: '/api/' + constants.API_VERSION + '/remote/' + requestEndpoint,
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data: requestsToMake // Requests we need to make
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}
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// Make multiple retry requests to all of pods
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// The function fire some useful callbacks
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requests.makeSecureRequest(params, (err, res) => {
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if (err || (res.statusCode !== 200 && res.statusCode !== 201 && res.statusCode !== 204)) {
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err = err ? err.message : 'Status code not 20x : ' + res.statusCode
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logger.error('Error sending secure request to %s pod.', toPod.host, { error: err })
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return callback(false)
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}
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return callback(true)
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})
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}
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// Make all the requests of the scheduler
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makeRequests () {
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this.getRequestModel().listWithLimitAndRandom(this.limitPods, this.limitPerPod, (err, requests) => {
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if (err) {
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logger.error('Cannot get the list of "%s".', this.description, { err: err })
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return // Abort
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}
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// If there are no requests, abort
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if (requests.length === 0) {
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logger.info('No "%s" to make.', this.description)
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return
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}
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// We want to group requests by destinations pod and endpoint
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const requestsToMakeGrouped = this.buildRequestObjects(requests)
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logger.info('Making "%s" to friends.', this.description)
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const goodPods = []
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const badPods = []
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eachLimit(Object.keys(requestsToMakeGrouped), constants.REQUESTS_IN_PARALLEL, (hashKey, callbackEach) => {
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const requestToMake = requestsToMakeGrouped[hashKey]
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const toPod = requestToMake.toPod
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// Maybe the pod is not our friend anymore so simply remove it
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if (!toPod) {
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const requestIdsToDelete = requestToMake.ids
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logger.info('Removing %d "%s" of unexisting pod %s.', requestIdsToDelete.length, this.description, requestToMake.toPod.id)
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return this.getRequestToPodModel().removePodOf(requestIdsToDelete, requestToMake.toPod.id, callbackEach)
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}
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this.makeRequest(toPod, requestToMake.endpoint, requestToMake.datas, (success) => {
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if (success === false) {
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badPods.push(requestToMake.toPod.id)
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return callbackEach()
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}
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logger.debug('Removing requests for pod %s.', requestToMake.toPod.id, { requestsIds: requestToMake.ids })
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goodPods.push(requestToMake.toPod.id)
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// Remove the pod id of these request ids
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this.getRequestToPodModel().removeByRequestIdsAndPod(requestToMake.ids, requestToMake.toPod.id, callbackEach)
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this.afterRequestHook()
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})
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}, () => {
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// All the requests were made, we update the pods score
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db.Pod.updatePodsScore(goodPods, badPods)
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this.afterRequestsHook()
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})
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})
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}
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flush (callback) {
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this.getRequestModel().removeAll(callback)
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}
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afterRequestHook () {
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// Nothing to do, let children reimplement it
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}
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afterRequestsHook () {
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// Nothing to do, let children reimplement it
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}
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}
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