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1 | ;(function () { |
2 | 'use strict' | |
3 | ||
8c308c2b | 4 | var async = require('async') |
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5 | var config = require('config') |
6 | var fs = require('fs') | |
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7 | var request = require('request') |
8 | ||
9 | var logger = require('./logger') | |
8c308c2b | 10 | var PodsDB = require('./database').PodsDB |
0b697522 | 11 | var poolRequests = require('./poolRequests') |
a1860380 | 12 | var utils = require('./utils') |
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13 | |
14 | var pods = {} | |
a1860380 | 15 | |
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16 | var http = config.get('webserver.https') ? 'https' : 'http' |
17 | var host = config.get('webserver.host') | |
18 | var port = config.get('webserver.port') | |
19 | ||
20 | // ----------- Private functions ----------- | |
21 | ||
22 | function getForeignPodsList (url, callback) { | |
f5a60a51 | 23 | var path = '/api/' + global.API_VERSION + '/pods' |
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24 | |
25 | request.get(url + path, function (err, response, body) { | |
26 | if (err) throw err | |
27 | callback(JSON.parse(body)) | |
28 | }) | |
29 | } | |
30 | ||
31 | // ----------- Public functions ----------- | |
a1860380 | 32 | |
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33 | pods.list = function (callback) { |
34 | PodsDB.find(function (err, pods_list) { | |
35 | if (err) { | |
36 | logger.error('Cannot get the list of the pods.', { error: err }) | |
37 | return callback(err) | |
38 | } | |
39 | ||
40 | return callback(null, pods_list) | |
41 | }) | |
42 | } | |
43 | ||
44 | // { url } | |
45 | pods.add = function (data, callback) { | |
46 | logger.info('Adding pod: %s', data.url) | |
47 | ||
48 | var params = { | |
49 | url: data.url, | |
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50 | publicKey: data.publicKey, |
51 | score: global.FRIEND_BASE_SCORE | |
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52 | } |
53 | ||
54 | PodsDB.create(params, function (err, pod) { | |
55 | if (err) { | |
56 | logger.error('Cannot insert the pod.', { error: err }) | |
57 | return callback(err) | |
58 | } | |
59 | ||
d148f3b9 | 60 | fs.readFile(utils.certDir + 'peertube.pub', 'utf8', function (err, cert) { |
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61 | if (err) { |
62 | logger.error('Cannot read cert file.', { error: err }) | |
63 | return callback(err) | |
64 | } | |
65 | ||
66 | return callback(null, { cert: cert }) | |
67 | }) | |
68 | }) | |
69 | } | |
70 | ||
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71 | pods.addVideoToFriends = function (video) { |
72 | // To avoid duplicates | |
73 | var id = video.name + video.magnetUri | |
74 | poolRequests.addToPoolRequests(id, 'add', video) | |
75 | } | |
3bcb78b3 | 76 | |
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77 | pods.removeVideoToFriends = function (video) { |
78 | // To avoid duplicates | |
79 | var id = video.name + video.magnetUri | |
80 | poolRequests.addToPoolRequests(id, 'remove', video) | |
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81 | } |
82 | ||
83 | pods.makeFriends = function (callback) { | |
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84 | var pods_score = {} |
85 | ||
86 | logger.info('Make friends!') | |
d148f3b9 | 87 | fs.readFile(utils.certDir + 'peertube.pub', 'utf8', function (err, cert) { |
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88 | if (err) { |
89 | logger.error('Cannot read public cert.', { error: err }) | |
90 | return callback(err) | |
91 | } | |
92 | ||
93 | var urls = config.get('network.friends') | |
8c308c2b | 94 | |
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95 | async.each(urls, computeForeignPodsList, function () { |
96 | logger.debug('Pods scores computed.', { pods_score: pods_score }) | |
97 | var pods_list = computeWinningPods(urls, pods_score) | |
98 | logger.debug('Pods that we keep computed.', { pods_to_keep: pods_list }) | |
99 | ||
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100 | makeRequestsToWinningPods(cert, pods_list) |
101 | }) | |
102 | }) | |
103 | ||
104 | // ----------------------------------------------------------------------- | |
8c308c2b | 105 | |
a1860380 | 106 | function computeForeignPodsList (url, callback) { |
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107 | // Let's give 1 point to the pod we ask the friends list |
108 | pods_score[url] = 1 | |
8c308c2b | 109 | |
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110 | getForeignPodsList(url, function (foreign_pods_list) { |
111 | if (foreign_pods_list.length === 0) return callback() | |
112 | ||
113 | async.each(foreign_pods_list, function (foreign_pod, callback_each) { | |
114 | var foreign_url = foreign_pod.url | |
115 | ||
116 | if (pods_score[foreign_url]) pods_score[foreign_url]++ | |
117 | else pods_score[foreign_url] = 1 | |
118 | ||
119 | callback_each() | |
120 | }, function () { | |
121 | callback() | |
8c308c2b | 122 | }) |
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123 | }) |
124 | } | |
8c308c2b | 125 | |
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126 | function computeWinningPods (urls, pods_score) { |
127 | // Build the list of pods to add | |
128 | // Only add a pod if it exists in more than a half base pods | |
129 | var pods_list = [] | |
130 | var base_score = urls.length / 2 | |
131 | Object.keys(pods_score).forEach(function (pod) { | |
132 | if (pods_score[pod] > base_score) pods_list.push({ url: pod }) | |
133 | }) | |
8c308c2b | 134 | |
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135 | return pods_list |
136 | } | |
8c308c2b | 137 | |
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138 | function makeRequestsToWinningPods (cert, pods_list) { |
139 | var data = { | |
140 | url: http + '://' + host + ':' + port, | |
141 | publicKey: cert | |
142 | } | |
8c308c2b | 143 | |
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144 | utils.makeMultipleRetryRequest( |
145 | { method: 'POST', path: '/api/' + global.API_VERSION + '/pods/', data: data }, | |
146 | ||
147 | pods_list, | |
148 | ||
0b697522 | 149 | function eachRequest (err, response, body, url, pod, callback_each_request) { |
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150 | // We add the pod if it responded correctly with its public certificate |
151 | if (!err && response.statusCode === 200) { | |
3bcb78b3 | 152 | pods.add({ url: pod.url, publicKey: body.cert, score: global.FRIEND_BASE_SCORE }, function (err) { |
a1860380 | 153 | if (err) { |
3bcb78b3 | 154 | logger.error('Error with adding %s pod.', pod.url, { error: err }) |
a1860380 | 155 | } |
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156 | |
157 | return callback_each_request() | |
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158 | }) |
159 | } else { | |
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160 | logger.error('Error with adding %s pod.', pod.url, { error: err || new Error('Status not 200') }) |
161 | return callback_each_request() | |
8c308c2b | 162 | } |
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163 | }, |
164 | ||
165 | function endRequests (err) { | |
166 | if (err) { | |
167 | logger.error('There was some errors when we wanted to make friends.', { error: err }) | |
168 | return callback(err) | |
169 | } | |
170 | ||
171 | logger.debug('makeRequestsToWinningPods finished.') | |
172 | return callback(null) | |
173 | } | |
174 | ) | |
175 | } | |
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176 | } |
177 | ||
178 | module.exports = pods | |
179 | })() |