私は最初の「本格的な」node.jsモジュールを書いています.いくつかのアドバイス/ベストプラクティスが必要です...
質問はコード内のコメントを読んでください！
サーバー.js
var Client = require('./index');
var client = Client.createClient();
client.on('data', function(data) {
console.log(data);
});
client.on('ERROR', function(data) {
console.log(data);
});
node-module.js
exports.Client = require('./Client');
exports.createClient = function(options) {
return new exports.Client(options);
};
/**
* Question 1:
* I want to have an optional WebUI for this, how should it recieve the data?
* I figured via event-emitters is best(?)
* But where should it be placed (and how) so it can access the events from Client.js?
*/
exports.createServer = function(options) {
//...
}
クライアント.js
Client.Handlers = require('./Handlers');
module.exports = Client;
function Client(options) {
// ...
this._callback_handlers['ERROR'] = Client.Handlers.error
/**
* Question 2:
* Initialize connection to server
*
* Should it be something like this instead:
* this._socket = this.Connect(options); ?
* How do I achieve this?
* And at the same time keeping the buffer-variable local to the Connect function?
*/
this.Connect();
});
Client.prototype.Connect = function() {
var self = this;
var buffer = '';
this._socket = net.connect({
host: self.options.host,
port: self.options.port
}, function() {
})
.on('data', function(chunk) {
var offset, part;
buffer += chunk;
/**
* Question 3:
* Buffer up and parse only whole rows
*
* This is a OK way to do it, right?
* Should I listen for the event "data"
* instead of calling self.parse_response() like a normal function?
*
*/
while((offset = buffer.indexOf("\n")) > -1) {
part = buffer.substr(0, offset);
buffer = buffer.substr(offset + 1);
if(part) {
self.emit('data', part);
self.parse_response(part);
}
}
})
};
Client.prototype.parse_response = function(data) {
// ...
/**
* Question 4:
* Send callbacks
*
* _callback_handlers is an array containing callbacks functions
* (see top of Client.js: this._callback_handlers['ERROR'] = Client.Handlers.error)
*
* I would perfer to use something like this instead:
* this.emit(data[0], data[1]);
*
* But how do I make Handlers.js listen to these events?
* since "Client" dosent exist there
*
* The reason I have handlers.js in the first place
* is to give the code a better structure
*
*/
if(this._callback_handlers[data[0]]) {
this._callback_handlers[data[0]].apply(this, data[1]);
}
}
Handlers.js
//...
exports.error = function(a) {
this.emit('ERROR', a);
}
//...