Little refractoring of makeFriends function
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Chocobozzz
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198
lib/friends.js
198
lib/friends.js
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@ -54,110 +54,18 @@ function makeFriends (callback) {
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var urls = config.get('network.friends')
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async.each(urls, computeForeignPodsList, function (err) {
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async.each(urls, function (url, callback) {
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computeForeignPodsList(url, pods_score, callback)
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}, function (err) {
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if (err) return callback(err)
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logger.debug('Pods scores computed.', { pods_score: pods_score })
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var pods_list = computeWinningPods(urls, pods_score)
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logger.debug('Pods that we keep computed.', { pods_to_keep: pods_list })
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makeRequestsToWinningPods(cert, pods_list)
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makeRequestsToWinningPods(cert, pods_list, callback)
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})
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})
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// -----------------------------------------------------------------------
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function computeForeignPodsList (url, callback) {
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// Let's give 1 point to the pod we ask the friends list
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pods_score[url] = 1
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getForeignPodsList(url, function (err, foreign_pods_list) {
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if (err) return callback(err)
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if (foreign_pods_list.length === 0) return callback()
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async.each(foreign_pods_list, function (foreign_pod, callback_each) {
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var foreign_url = foreign_pod.url
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if (pods_score[foreign_url]) pods_score[foreign_url]++
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else pods_score[foreign_url] = 1
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callback_each()
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}, function () {
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callback()
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})
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})
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}
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function computeWinningPods (urls, pods_score) {
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// Build the list of pods to add
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// Only add a pod if it exists in more than a half base pods
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var pods_list = []
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var base_score = urls.length / 2
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Object.keys(pods_score).forEach(function (pod) {
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if (pods_score[pod] > base_score) pods_list.push({ url: pod })
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})
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return pods_list
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}
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function makeRequestsToWinningPods (cert, pods_list) {
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// Stop pool requests
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poolRequests.deactivate()
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// Flush pool requests
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poolRequests.forceSend()
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// Get the list of our videos to send to our new friends
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Videos.listOwned(function (err, videos_list) {
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if (err) {
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logger.error('Cannot get the list of videos we own.')
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return callback(err)
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}
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var data = {
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url: http + '://' + host + ':' + port,
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publicKey: cert,
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videos: videos_list
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}
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requests.makeMultipleRetryRequest(
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{ method: 'POST', path: '/api/' + constants.API_VERSION + '/pods/', data: data },
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pods_list,
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function eachRequest (err, response, body, url, pod, callback_each_request) {
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// We add the pod if it responded correctly with its public certificate
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if (!err && response.statusCode === 200) {
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Pods.add({ url: pod.url, publicKey: body.cert, score: constants.FRIEND_BASE_SCORE }, function (err) {
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if (err) logger.error('Error with adding %s pod.', pod.url, { error: err })
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Videos.addRemotes(body.videos, function (err) {
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if (err) logger.error('Error with adding videos of pod.', pod.url, { error: err })
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logger.debug('Adding remote videos from %s.', pod.url, { videos: body.videos })
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return callback_each_request()
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})
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})
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} else {
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logger.error('Error with adding %s pod.', pod.url, { error: err || new Error('Status not 200') })
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return callback_each_request()
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}
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},
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function endRequests (err) {
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// Now we made new friends, we can re activate the pool of requests
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poolRequests.activate()
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if (err) {
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logger.error('There was some errors when we wanted to make friends.')
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return callback(err)
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}
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logger.debug('makeRequestsToWinningPods finished.')
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return callback(null)
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}
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)
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})
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}
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}
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function quitFriends (callback) {
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@ -211,6 +119,39 @@ module.exports = pods
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// ---------------------------------------------------------------------------
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function computeForeignPodsList (url, pods_score, callback) {
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// Let's give 1 point to the pod we ask the friends list
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pods_score[url] = 1
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getForeignPodsList(url, function (err, foreign_pods_list) {
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if (err) return callback(err)
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if (foreign_pods_list.length === 0) return callback()
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async.each(foreign_pods_list, function (foreign_pod, callback_each) {
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var foreign_url = foreign_pod.url
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if (pods_score[foreign_url]) pods_score[foreign_url]++
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else pods_score[foreign_url] = 1
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callback_each()
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}, function () {
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callback()
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})
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})
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}
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function computeWinningPods (urls, pods_score) {
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// Build the list of pods to add
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// Only add a pod if it exists in more than a half base pods
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var pods_list = []
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var base_score = urls.length / 2
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Object.keys(pods_score).forEach(function (pod) {
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if (pods_score[pod] > base_score) pods_list.push({ url: pod })
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})
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return pods_list
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}
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function getForeignPodsList (url, callback) {
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var path = '/api/' + constants.API_VERSION + '/pods'
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@ -220,3 +161,68 @@ function getForeignPodsList (url, callback) {
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callback(null, JSON.parse(body))
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})
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}
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function makeRequestsToWinningPods (cert, pods_list, callback) {
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// Stop pool requests
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poolRequests.deactivate()
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// Flush pool requests
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poolRequests.forceSend()
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// Get the list of our videos to send to our new friends
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Videos.listOwned(function (err, videos_list) {
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if (err) {
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logger.error('Cannot get the list of videos we own.')
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return callback(err)
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}
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var data = {
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url: http + '://' + host + ':' + port,
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publicKey: cert,
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videos: videos_list
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}
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requests.makeMultipleRetryRequest(
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{ method: 'POST', path: '/api/' + constants.API_VERSION + '/pods/', data: data },
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pods_list,
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function eachRequest (err, response, body, url, pod, callback_each_request) {
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// We add the pod if it responded correctly with its public certificate
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if (!err && response.statusCode === 200) {
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Pods.add({ url: pod.url, publicKey: body.cert, score: constants.FRIEND_BASE_SCORE }, function (err) {
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if (err) {
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logger.error('Error with adding %s pod.', pod.url, { error: err })
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return callback_each_request()
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}
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Videos.addRemotes(body.videos, function (err) {
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if (err) {
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logger.error('Error with adding videos of pod.', pod.url, { error: err })
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return callback_each_request()
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}
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logger.debug('Adding remote videos from %s.', pod.url, { videos: body.videos })
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return callback_each_request()
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})
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})
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} else {
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logger.error('Error with adding %s pod.', pod.url, { error: err || new Error('Status not 200') })
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return callback_each_request()
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}
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},
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function endRequests (err) {
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// Now we made new friends, we can re activate the pool of requests
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poolRequests.activate()
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if (err) {
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logger.error('There was some errors when we wanted to make friends.')
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return callback(err)
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}
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logger.debug('makeRequestsToWinningPods finished.')
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return callback(null)
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}
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)
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})
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}
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