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May 22, 2015 13:34
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socket_list.js
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'use strict'; | |
module.exports = {SocketListSend, SocketListReceive} | |
const EventEmitter = require('events').EventEmitter; | |
const util = require('util'); | |
// This object keep track of the socket there are sended | |
function SocketListSend(slave, key) { | |
EventEmitter.call(this); | |
this.key = key; | |
this.slave = slave; | |
} | |
util.inherits(SocketListSend, EventEmitter); | |
SocketListSend.prototype._request = function(msg, cmd, callback) { | |
var self = this; | |
if (!this.slave.connected) return onclose(); | |
this.slave.send(msg); | |
function onclose() { | |
self.slave.removeListener('internalMessage', onreply); | |
callback(new Error('Slave closed before reply')); | |
} | |
function onreply(msg) { | |
if (!(msg.cmd === cmd && msg.key === self.key)) return; | |
self.slave.removeListener('disconnect', onclose); | |
self.slave.removeListener('internalMessage', onreply); | |
callback(null, msg); | |
} | |
this.slave.once('disconnect', onclose); | |
this.slave.on('internalMessage', onreply); | |
}; | |
SocketListSend.prototype.close = function close(callback) { | |
this._request({ | |
cmd: 'NODE_SOCKET_NOTIFY_CLOSE', | |
key: this.key | |
}, 'NODE_SOCKET_ALL_CLOSED', callback); | |
}; | |
SocketListSend.prototype.getConnections = function getConnections(callback) { | |
this._request({ | |
cmd: 'NODE_SOCKET_GET_COUNT', | |
key: this.key | |
}, 'NODE_SOCKET_COUNT', function(err, msg) { | |
if (err) return callback(err); | |
callback(null, msg.count); | |
}); | |
}; | |
// This object keep track of the socket there are received | |
function SocketListReceive(slave, key) { | |
EventEmitter.call(this); | |
var self = this; | |
this.connections = 0; | |
this.key = key; | |
this.slave = slave; | |
function onempty() { | |
if (!self.slave.connected) return; | |
self.slave.send({ | |
cmd: 'NODE_SOCKET_ALL_CLOSED', | |
key: self.key | |
}); | |
} | |
this.slave.on('internalMessage', function(msg) { | |
if (msg.key !== self.key) return; | |
if (msg.cmd === 'NODE_SOCKET_NOTIFY_CLOSE') { | |
// Already empty | |
if (self.connections === 0) return onempty(); | |
// Wait for sockets to get closed | |
self.once('empty', onempty); | |
} else if (msg.cmd === 'NODE_SOCKET_GET_COUNT') { | |
if (!self.slave.connected) return; | |
self.slave.send({ | |
cmd: 'NODE_SOCKET_COUNT', | |
key: self.key, | |
count: self.connections | |
}); | |
} | |
}); | |
} | |
util.inherits(SocketListReceive, EventEmitter); | |
SocketListReceive.prototype.add = function(obj) { | |
var self = this; | |
this.connections++; | |
// Notify previous owner of socket about its state change | |
obj.socket.once('close', function() { | |
self.connections--; | |
if (self.connections === 0) self.emit('empty'); | |
}); | |
}; |
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./iojs tools/eslint/bin/eslint.js src lib test --reset --quiet | |
lib/internal/socket_list.js | |
3:33 error Unexpected token , | |
✖ 1 problem (1 error, 0 warnings) | |
make: *** [jslint] Error 1 |
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