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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 |
a1860380 | 11 | var utils = require('./utils') |
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12 | |
13 | var pods = {} | |
a1860380 | 14 | |
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15 | var http = config.get('webserver.https') ? 'https' : 'http' |
16 | var host = config.get('webserver.host') | |
17 | var port = config.get('webserver.port') | |
18 | ||
19 | // ----------- Private functions ----------- | |
20 | ||
21 | function getForeignPodsList (url, callback) { | |
f5a60a51 | 22 | var path = '/api/' + global.API_VERSION + '/pods' |
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23 | |
24 | request.get(url + path, function (err, response, body) { | |
25 | if (err) throw err | |
26 | callback(JSON.parse(body)) | |
27 | }) | |
28 | } | |
29 | ||
30 | // ----------- Public functions ----------- | |
a1860380 | 31 | |
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32 | pods.list = function (callback) { |
33 | PodsDB.find(function (err, pods_list) { | |
34 | if (err) { | |
35 | logger.error('Cannot get the list of the pods.', { error: err }) | |
36 | return callback(err) | |
37 | } | |
38 | ||
39 | return callback(null, pods_list) | |
40 | }) | |
41 | } | |
42 | ||
43 | // { url } | |
44 | pods.add = function (data, callback) { | |
45 | logger.info('Adding pod: %s', data.url) | |
46 | ||
47 | var params = { | |
48 | url: data.url, | |
49 | publicKey: data.publicKey | |
50 | } | |
51 | ||
52 | PodsDB.create(params, function (err, pod) { | |
53 | if (err) { | |
54 | logger.error('Cannot insert the pod.', { error: err }) | |
55 | return callback(err) | |
56 | } | |
57 | ||
d148f3b9 | 58 | fs.readFile(utils.certDir + 'peertube.pub', 'utf8', function (err, cert) { |
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59 | if (err) { |
60 | logger.error('Cannot read cert file.', { error: err }) | |
61 | return callback(err) | |
62 | } | |
63 | ||
64 | return callback(null, { cert: cert }) | |
65 | }) | |
66 | }) | |
67 | } | |
68 | ||
69 | // { path, data } | |
70 | pods.makeSecureRequest = function (data, callback) { | |
71 | PodsDB.find({}, { url: 1, publicKey: 1 }).exec(function (err, urls) { | |
72 | if (err) { | |
73 | logger.error('Cannot get the list of the pods.', { error: err }) | |
74 | return callback(err) | |
75 | } | |
76 | ||
77 | logger.debug('Make multiple requests.') | |
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78 | |
79 | var params = { | |
80 | encrypt: true, | |
81 | sign: true, | |
82 | method: data.method, | |
83 | path: data.path, | |
84 | data: data.data | |
85 | } | |
86 | ||
8c308c2b | 87 | utils.makeMultipleRetryRequest( |
a1860380 | 88 | params, |
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89 | |
90 | urls, | |
91 | ||
a1860380 | 92 | function callbackEachPodFinished (err, response, body, url) { |
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93 | if (err || response.statusCode !== 200) { |
94 | logger.error('Error sending secure request to %s/%s pod.', url, data.path, { error: err }) | |
95 | } | |
96 | }, | |
97 | ||
a1860380 | 98 | function callbackAllPodsFinished (err) { |
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99 | if (err) { |
100 | logger.error('There was some errors when sending the video meta data.', { error: err }) | |
101 | return callback(err) | |
102 | } | |
103 | ||
104 | logger.debug('Finished') | |
105 | callback(null) | |
106 | } | |
107 | ) | |
108 | }) | |
109 | } | |
110 | ||
111 | pods.makeFriends = function (callback) { | |
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112 | var pods_score = {} |
113 | ||
114 | logger.info('Make friends!') | |
d148f3b9 | 115 | fs.readFile(utils.certDir + 'peertube.pub', 'utf8', function (err, cert) { |
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116 | if (err) { |
117 | logger.error('Cannot read public cert.', { error: err }) | |
118 | return callback(err) | |
119 | } | |
120 | ||
121 | var urls = config.get('network.friends') | |
8c308c2b | 122 | |
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123 | async.each(urls, computeForeignPodsList, function () { |
124 | logger.debug('Pods scores computed.', { pods_score: pods_score }) | |
125 | var pods_list = computeWinningPods(urls, pods_score) | |
126 | logger.debug('Pods that we keep computed.', { pods_to_keep: pods_list }) | |
127 | ||
128 | logger.debug('Make requests...') | |
129 | makeRequestsToWinningPods(cert, pods_list) | |
130 | }) | |
131 | }) | |
132 | ||
133 | // ----------------------------------------------------------------------- | |
8c308c2b | 134 | |
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135 | function computeForeignPodsList (url, callback) { |
136 | // Always add a trust pod | |
137 | pods_score[url] = Infinity | |
8c308c2b | 138 | |
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139 | getForeignPodsList(url, function (foreign_pods_list) { |
140 | if (foreign_pods_list.length === 0) return callback() | |
141 | ||
142 | async.each(foreign_pods_list, function (foreign_pod, callback_each) { | |
143 | var foreign_url = foreign_pod.url | |
144 | ||
145 | if (pods_score[foreign_url]) pods_score[foreign_url]++ | |
146 | else pods_score[foreign_url] = 1 | |
147 | ||
148 | callback_each() | |
149 | }, function () { | |
150 | callback() | |
8c308c2b | 151 | }) |
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152 | }) |
153 | } | |
8c308c2b | 154 | |
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155 | function computeWinningPods (urls, pods_score) { |
156 | // Build the list of pods to add | |
157 | // Only add a pod if it exists in more than a half base pods | |
158 | var pods_list = [] | |
159 | var base_score = urls.length / 2 | |
160 | Object.keys(pods_score).forEach(function (pod) { | |
161 | if (pods_score[pod] > base_score) pods_list.push({ url: pod }) | |
162 | }) | |
8c308c2b | 163 | |
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164 | return pods_list |
165 | } | |
8c308c2b | 166 | |
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167 | function makeRequestsToWinningPods (cert, pods_list) { |
168 | var data = { | |
169 | url: http + '://' + host + ':' + port, | |
170 | publicKey: cert | |
171 | } | |
8c308c2b | 172 | |
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173 | utils.makeMultipleRetryRequest( |
174 | { method: 'POST', path: '/api/' + global.API_VERSION + '/pods/', data: data }, | |
175 | ||
176 | pods_list, | |
177 | ||
178 | function eachRequest (err, response, body, url) { | |
179 | // We add the pod if it responded correctly with its public certificate | |
180 | if (!err && response.statusCode === 200) { | |
181 | pods.add({ url: url, publicKey: body.cert }, function (err) { | |
182 | if (err) { | |
183 | logger.error('Error with adding %s pod.', url, { error: err }) | |
184 | } | |
185 | }) | |
186 | } else { | |
187 | logger.error('Error with adding %s pod.', url, { error: err || new Error('Status not 200') }) | |
8c308c2b | 188 | } |
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189 | }, |
190 | ||
191 | function endRequests (err) { | |
192 | if (err) { | |
193 | logger.error('There was some errors when we wanted to make friends.', { error: err }) | |
194 | return callback(err) | |
195 | } | |
196 | ||
197 | logger.debug('makeRequestsToWinningPods finished.') | |
198 | return callback(null) | |
199 | } | |
200 | ) | |
201 | } | |
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202 | } |
203 | ||
204 | module.exports = pods | |
205 | })() |