1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
'use strict'
var async = require('async')
var config = require('config')
var fs = require('fs')
var request = require('request')
var constants = require('../initializers/constants')
var logger = require('../helpers/logger')
var peertubeCrypto = require('../helpers/peertubeCrypto')
var Pods = require('../models/pods')
var poolRequests = require('../lib/poolRequests')
var requests = require('../helpers/requests')
var Videos = require('../models/videos')
var http = config.get('webserver.https') ? 'https' : 'http'
var host = config.get('webserver.host')
var port = config.get('webserver.port')
var pods = {
addVideoToFriends: addVideoToFriends,
hasFriends: hasFriends,
makeFriends: makeFriends,
quitFriends: quitFriends,
removeVideoToFriends: removeVideoToFriends
}
function addVideoToFriends (video) {
// To avoid duplicates
var id = video.name + video.magnetUri
// ensure namePath is null
video.namePath = null
poolRequests.addRequest(id, 'add', video)
}
function hasFriends (callback) {
Pods.count(function (err, count) {
if (err) return callback(err)
var has_friends = (count !== 0)
callback(null, has_friends)
})
}
function makeFriends (callback) {
var pods_score = {}
logger.info('Make friends!')
fs.readFile(peertubeCrypto.getCertDir() + 'peertube.pub', 'utf8', function (err, cert) {
if (err) {
logger.error('Cannot read public cert.')
return callback(err)
}
var urls = config.get('network.friends')
async.each(urls, computeForeignPodsList, function (err) {
if (err) return callback(err)
logger.debug('Pods scores computed.', { pods_score: pods_score })
var pods_list = computeWinningPods(urls, pods_score)
logger.debug('Pods that we keep computed.', { pods_to_keep: pods_list })
makeRequestsToWinningPods(cert, pods_list)
})
})
// -----------------------------------------------------------------------
function computeForeignPodsList (url, callback) {
// Let's give 1 point to the pod we ask the friends list
pods_score[url] = 1
getForeignPodsList(url, function (err, foreign_pods_list) {
if (err) return callback(err)
if (foreign_pods_list.length === 0) return callback()
async.each(foreign_pods_list, function (foreign_pod, callback_each) {
var foreign_url = foreign_pod.url
if (pods_score[foreign_url]) pods_score[foreign_url]++
else pods_score[foreign_url] = 1
callback_each()
}, function () {
callback()
})
})
}
function computeWinningPods (urls, pods_score) {
// Build the list of pods to add
// Only add a pod if it exists in more than a half base pods
var pods_list = []
var base_score = urls.length / 2
Object.keys(pods_score).forEach(function (pod) {
if (pods_score[pod] > base_score) pods_list.push({ url: pod })
})
return pods_list
}
function makeRequestsToWinningPods (cert, pods_list) {
// Stop pool requests
poolRequests.deactivate()
// Flush pool requests
poolRequests.forceSend()
// Get the list of our videos to send to our new friends
Videos.listOwned(function (err, videos_list) {
if (err) {
logger.error('Cannot get the list of videos we own.')
return callback(err)
}
var data = {
url: http + '://' + host + ':' + port,
publicKey: cert,
videos: videos_list
}
requests.makeMultipleRetryRequest(
{ method: 'POST', path: '/api/' + constants.API_VERSION + '/pods/', data: data },
pods_list,
function eachRequest (err, response, body, url, pod, callback_each_request) {
// We add the pod if it responded correctly with its public certificate
if (!err && response.statusCode === 200) {
Pods.add({ url: pod.url, publicKey: body.cert, score: constants.FRIEND_BASE_SCORE }, function (err) {
if (err) logger.error('Error with adding %s pod.', pod.url, { error: err })
Videos.addRemotes(body.videos, function (err) {
if (err) logger.error('Error with adding videos of pod.', pod.url, { error: err })
logger.debug('Adding remote videos from %s.', pod.url, { videos: body.videos })
return callback_each_request()
})
})
} else {
logger.error('Error with adding %s pod.', pod.url, { error: err || new Error('Status not 200') })
return callback_each_request()
}
},
function endRequests (err) {
// Now we made new friends, we can re activate the pool of requests
poolRequests.activate()
if (err) {
logger.error('There was some errors when we wanted to make friends.')
return callback(err)
}
logger.debug('makeRequestsToWinningPods finished.')
return callback(null)
}
)
})
}
}
function quitFriends (callback) {
// Stop pool requests
poolRequests.deactivate()
// Flush pool requests
poolRequests.forceSend()
Pods.list(function (err, pods) {
if (err) return callback(err)
var request = {
method: 'POST',
path: '/api/' + constants.API_VERSION + '/pods/remove',
sign: true,
encrypt: true,
data: {
url: 'me' // Fake data
}
}
// Announce we quit them
requests.makeMultipleRetryRequest(request, pods, function () {
Pods.removeAll(function (err) {
poolRequests.activate()
if (err) return callback(err)
logger.info('Broke friends, so sad :(')
Videos.removeAllRemotes(function (err) {
if (err) return callback(err)
logger.info('Removed all remote videos.')
callback(null)
})
})
})
})
}
function removeVideoToFriends (video) {
// To avoid duplicates
var id = video.name + video.magnetUri
poolRequests.addRequest(id, 'remove', video)
}
// ---------------------------------------------------------------------------
module.exports = pods
// ---------------------------------------------------------------------------
function getForeignPodsList (url, callback) {
var path = '/api/' + constants.API_VERSION + '/pods'
request.get(url + path, function (err, response, body) {
if (err) return callback(err)
callback(null, JSON.parse(body))
})
}
|
