/
server.js
241 lines (202 loc) · 6.6 KB
/
server.js
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
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
var glob = require("glob")
var path = require('path')
var fs = require('fs')
var mkdirp = require('mkdirp')
var watch = require('watch')
var Datastore = require('nedb')
var Server = function (opts) {
var Service = new Datastore({
filename: 'data/db/Service.db',
autoload: true
})
var checkServiceFormat = function (serviceData) {
if (typeof serviceData.appSecret != 'string') return false
if (typeof serviceData.appName != 'string') return false
return true
}
var addNewServiceByFilePath = function (filepath) {
fs.readFile(filepath, 'UTF-8', function (err, data) {
if (err) throw err
try {
var serviceData = JSON.parse(data)
} catch(e){
if (e) throw e
}
serviceData.appId = path.basename(filepath, '.json')
serviceData.socketId = null
serviceData.online = 0
if (!checkServiceFormat(serviceData)) throw Error('Service Defination Format Error')
Service.insert(serviceData, function (err, doc) {
if (err) throw err
})
})
}
var updateServiceByFilePath = function (filepath) {
fs.readFile(filepath, 'UTF-8', function (err, data) {
if (err) throw err
try {
var serviceData = JSON.parse(data)
} catch(e){
if (e) throw e
}
var appId = path.basename(filepath, '.json')
serviceData.socketId = null
serviceData.online = 0
if (!checkServiceFormat(serviceData)) throw Error('Service Defination Format Error')
Service.update({appId: appId}, {$set: serviceData},{}, function (err, doc) {
if (err) throw err
})
})
}
/****************
*
* INIT Service
*
**************/
try {
mkdirp.sync('data/service')
} catch(e){
throw new Error('File RW+ Permission Denied.')
}
Service.remove({}, {multi: true}, function (err, numRemoved) {
if (err) throw err
console.log(numRemoved)
glob('data/service/**/*.json', {}, function (err, files) {
if (err) throw err
if (!files.length) console.warn('none service defination file found')
files.forEach(function (item, index) {
addNewServiceByFilePath(item)
})
watch.createMonitor('data/service', function (monitor) {
monitor.on("created", function (f, stat) {
if (path.extname(f) !== '.json') return null
addNewServiceByFilePath(f)
})
monitor.on("changed", function (f, curr, prev) {
updateServiceByFilePath(f)
})
monitor.on("removed", function (f, stat) {
var appId = path.basename(f, '.json')
Service.remove({appId: appId}, {}, function (err, numRemoved) {
if (err) throw err
})
})
})
})
})
/*****************
*
* socket.io server monitor
*
****************/
var io = require('socket.io')()
io.on('connection', function(socket){
//var io = socket.server
//var eio = io.eio
//var clients = Object.keys(eio.clients)
//io.clients[socketId].send()
console.log('new connection '+socket.id)
socket.on('register', function (data) {
console.log('register')
console.log(data)
console.log(socket.id)
if (!socket.id) {
console.log('[EXCEPTION] LOST SOCKET ID')
return socket.emit('registerResponse', {error: "EXCEPTION_ERROR"})
}
var insertData = {
online: 1,
appId: data.appId,
socketId: socket.id,
appSecret: data.appSecret
}
Service.findOne({
appId: insertData.appId,
appSecret: insertData.appSecret
}, function (err, doc) {
if (err) return socket.emit('registerResponse', {error: "EXCEPTION_ERROR"})
if (!doc) return socket.emit('registerResponse', {error: "PERMISSION_DENIED"})
Service.update({appId: insertData.appId}, {$set: insertData}, {}, function (err, doc) {
if (err) return socket.emit('registerResponse', {error: "EXCEPTION_ERROR"})
socket.emit('registerResponse', {success: 1})
})
})
})
/**
* 请求方
*/
socket.on('import', function (request) {
console.log('import:'+JSON.stringify(request))
var importAppName = request.importAppName
var response = {
callbackId: request.callbackId,
data: {}
}
if (!request.callbackId) {
response.data = {error: 'LOST_CALLBACKID'}
return socket.emit('export', response)
}
Service.findOne({socketId: socket.id}, function (err, doc) {
if(err) {
response.data = {error: 'EXCEPTION_ERROR'}
return socket.emit('export', response)
}
if (!doc) {
response.data = {error: "YOUR_SERVICE_UNREGISTERED"}
return socket.emit('export', response)
}
response.appId = request.appId = doc.appId
Service.findOne({
online: 1,
appName: importAppName,
}, function (err, doc) {
//var targetSocket = io.sockets.socket(doc.socketId)
//var targetSocket = io.clients[doc.socketId]
if (err) {
response.data = {error: 'EXCEPTION_ERROR'}
return socket.emit('export', response)
}
if (!doc) {
response.data = {error: "TARGET_SERVICE_OFFLINE"}
return socket.emit('export', response)
}
try {
io.sockets.connected[doc.socketId].emit('import', request)
} catch(e){
response.data = {error: 'EXCEPTION_ERROR'}
return socket.emit('export', response)
}
})
})
})
/**
* 处理方处理结果 -> 请求方
* @return response.appId 请求方的识别号
* @return response.callbackId 请求方的请求识别号
* @return response.data 真实结果
*/
socket.on('export', function (response) {
console.log('export/reply')
if (!response.appId) throw new Error('Export Lost Params: [appId]')
if (!response.callbackId) throw new Error('Export Lost Params: [callbackId]')
Service.findOne({appId: response.appId}, function (err, doc) {
if (err) throw err
var targetSocket = io.sockets.connected[doc.socketId]
if (targetSocket) targetSocket.emit('export', response)
})
})
/**
* 断开连接
*/
socket.on('disconnect', function(){
console.log(socket.id+' disconnected')
Service.update({socketId: socket.id}, {$set: {
socketId: null,
online: 0
}}, {}, console.log)
})
})
console.log('listening on port '+(opts.port||process.env.port||3300))
io.listen(opts.port||process.env.port||3300)
}
module.exports = Server