From 8c255eb53c8f47bd64778d6fbcb93b248ee14163 Mon Sep 17 00:00:00 2001 From: Chocobozzz Date: Mon, 6 Jun 2016 15:28:33 +0200 Subject: Little refractoring of requests scheduler module --- server/initializers/constants.js | 4 ++ server/lib/requestsScheduler.js | 87 +++++++++++++++++++++------------------- 2 files changed, 50 insertions(+), 41 deletions(-) (limited to 'server') diff --git a/server/initializers/constants.js b/server/initializers/constants.js index c6a6ac966..6fa322010 100644 --- a/server/initializers/constants.js +++ b/server/initializers/constants.js @@ -21,6 +21,9 @@ const PODS_SCORE = { // Number of retries we make for the make retry requests (to friends...) let REQUEST_RETRIES = 10 +// Different types or requests for the request scheduler module +const REQUEST_SCHEDULER_TYPE = [ 'add', 'remove' ] + // Sortable columns per schema const SEARCHABLE_COLUMNS = { VIDEOS: [ 'name', 'magnetUri', 'podUrl', 'author', 'tags' ] @@ -65,6 +68,7 @@ module.exports = { PAGINATION_COUNT_DEFAULT: PAGINATION_COUNT_DEFAULT, PODS_SCORE: PODS_SCORE, REQUEST_RETRIES: REQUEST_RETRIES, + REQUEST_SCHEDULER_TYPE: REQUEST_SCHEDULER_TYPE, SEARCHABLE_COLUMNS: SEARCHABLE_COLUMNS, SORTABLE_COLUMNS: SORTABLE_COLUMNS, THUMBNAILS_SIZE: THUMBNAILS_SIZE, diff --git a/server/lib/requestsScheduler.js b/server/lib/requestsScheduler.js index 3d04b8cc8..3c1df5d5c 100644 --- a/server/lib/requestsScheduler.js +++ b/server/lib/requestsScheduler.js @@ -11,6 +11,7 @@ const requests = require('../helpers/requests') const videos = require('../lib/videos') const Videos = require('../models/videos') +const REQUEST_SCHEDULER_TYPE = constants.REQUEST_SCHEDULER_TYPE let timer = null const requestsScheduler = { @@ -25,15 +26,17 @@ function activate () { timer = setInterval(makeRequests, constants.INTERVAL) } +// Add request to the scheduler function addRequest (id, type, request) { logger.debug('Add request to the requests scheduler.', { id: id, type: type, request: request }) Requests.findById(id, function (err, entity) { if (err) { - logger.error('Cannot find one request.', { error: err }) + logger.error('Error when trying to find a request.', { error: err }) return // Abort } + // If there were already a request with this id in the scheduler... if (entity) { if (entity.type === type) { logger.error('Cannot insert two same requests.') @@ -72,6 +75,7 @@ module.exports = requestsScheduler // --------------------------------------------------------------------------- +// Make a requests to friends of a certain type function makeRequest (type, requestsToMake, callback) { if (!callback) callback = function () {} @@ -79,17 +83,16 @@ function makeRequest (type, requestsToMake, callback) { if (err) return callback(err) const params = { - encrypt: true, - sign: true, + encrypt: true, // Security + sign: true, // To prove our identity method: 'POST', - path: null, - data: requestsToMake + path: null, // We build the path later + data: requestsToMake // Requests we need to make } - if (type === 'add') { - params.path = '/api/' + constants.API_VERSION + '/remotevideos/add' - } else if (type === 'remove') { - params.path = '/api/' + constants.API_VERSION + '/remotevideos/remove' + // If this is a valid type, we build the path + if (REQUEST_SCHEDULER_TYPE.indexOf(type) > -1) { + params.path = '/api/' + constants.API_VERSION + '/remotevideos/' + type } else { return callback(new Error('Unkown pool request type.')) } @@ -97,13 +100,17 @@ function makeRequest (type, requestsToMake, callback) { const badPods = [] const goodPods = [] + // Make multiple retry requests to all of pods + // The function fire some useful callbacks requests.makeMultipleRetryRequest(params, pods, callbackEachPodFinished, callbackAllPodsFinished) function callbackEachPodFinished (err, response, body, url, pod, callbackEachPodFinished) { + // We failed the request, add the pod unreachable to the bad pods list if (err || (response.statusCode !== 200 && response.statusCode !== 201 && response.statusCode !== 204)) { badPods.push(pod._id) logger.error('Error sending secure request to %s pod.', url, { error: err || new Error('Status code not 20x') }) } else { + // Request success goodPods.push(pod._id) } @@ -113,41 +120,43 @@ function makeRequest (type, requestsToMake, callback) { function callbackAllPodsFinished (err) { if (err) return callback(err) + // All the requests were made, we update the pods score updatePodsScore(goodPods, badPods) callback(null) } }) } +// Make all the requests of the scheduler function makeRequests () { - logger.info('Making requests to friends.') - Requests.list(function (err, requests) { if (err) { logger.error('Cannot get the list of requests.', { err: err }) return // Abort } - if (requests.length === 0) return + // If there are no requests, abort + if (requests.length === 0) { + logger.info('No requests to make.') + return + } - const requestsToMake = { - add: { - ids: [], - requests: [] - }, - remove: { + logger.info('Making requests to friends.') + + const requestsToMake = {} + for (const type of REQUEST_SCHEDULER_TYPE) { + requestsToMake[type] = { ids: [], requests: [] } } + // For each requests to make, we add it to the correct request type async.each(requests, function (poolRequest, callbackEach) { - if (poolRequest.type === 'add') { - requestsToMake.add.requests.push(poolRequest.request) - requestsToMake.add.ids.push(poolRequest._id) - } else if (poolRequest.type === 'remove') { - requestsToMake.remove.requests.push(poolRequest.request) - requestsToMake.remove.ids.push(poolRequest._id) + if (REQUEST_SCHEDULER_TYPE.indexOf(poolRequest.type) > -1) { + const requestTypeToMake = requestsToMake[poolRequest.type] + requestTypeToMake.requests.push(poolRequest.request) + requestTypeToMake.ids.push(poolRequest._id) } else { logger.error('Unkown request type.', { request_type: poolRequest.type }) return // abort @@ -155,27 +164,23 @@ function makeRequests () { callbackEach() }, function () { - // Send the add requests - if (requestsToMake.add.requests.length !== 0) { - makeRequest('add', requestsToMake.add.requests, function (err) { - if (err) logger.error('Errors when sent add requests.', { error: err }) - - Requests.removeRequests(requestsToMake.add.ids) - }) - } - - // Send the remove requests - if (requestsToMake.remove.requests.length !== 0) { - makeRequest('remove', requestsToMake.remove.requests, function (err) { - if (err) logger.error('Errors when sent remove pool requests.', { error: err }) - - Requests.removeRequests(requestsToMake.remove.ids) - }) + for (let type of Object.keys(requestsToMake)) { + const requestTypeToMake = requestsToMake[type] + // If there are requests for this type + if (requestTypeToMake.requests.length !== 0) { + makeRequest(type, requestTypeToMake.requests, function (err) { + if (err) logger.error('Errors when sent ' + type + ' requests.', { error: err }) + + // We made the requests, so we can remove them from the scheduler + Requests.removeRequests(requestTypeToMake.ids) + }) + } } }) }) } +// Remove pods with a score of 0 (too many requests where they were unreachable) function removeBadPods () { async.waterfall([ function findBadPods (callback) { @@ -243,7 +248,7 @@ function updatePodsScore (goodPods, badPods) { }) Pods.incrementScores(badPods, constants.PODS_SCORE.MALUS, function (err) { - if (err) logger.error('Cannot increment scores of bad pods.') + if (err) logger.error('Cannot decrement scores of bad pods.') removeBadPods() }) } -- cgit v1.2.3