setConfig: function(){
if(arguments.length > 1 && x.isString(arguments[0])){
this._espresso.config[arguments[0]] = arguments[1];
}else if(arguments.length === 1 && x.isObject(arguments[0])){
this._espresso.config = arguments[0];
}
return this;
},
module.exports = function(options){
this.handlers = [];
this.listeners = [];
this.timeout = 10000;
this.children = [];
this.bindChild = function(child){
for(var i = 0; i < this.children.length; i++)
if(this.children[i] === child) return this;
this.children.push(child);
child.on("message", function(msg){
self.receive(msg);
});
return this;
};
this.handle = function(handler, cb){
this.handlers.push({handler:handler,callback:cb});
return this;
};
this.listen = function(id, cb){
var listener = {
id: id,
callback: cb
};
this.listeners.push(listener);
var self = this;
listener.timeout = function(cb, exp){
setTimeout(function(){
if(self.unlistenById(id)){
cb();
}
}, exp || self.timeout);
}
return listener;
};
this.send = function(handler, payload, child){
var proc = process;
if(child){
this.bindChild(child);
proc = child;
}
var message = {
type: "message",
id: Math.random().toString().substring(2),
handler: handler,
payload: payload
};
proc.send(message);
var self = this;
message.listen = function(cb){
return self.listen(message.id, cb);
};
return message;
};
this.reply = function(id, payload){
var reply = {
type: "reply",
id: id,
payload: payload
}
process.send(reply);
return this;
};
this.receive = function(msg){
if(msg.type === "message"){
for(var i = 0; i < this.handlers.length; i++){
if(this.handlers[i].handler === msg.handler){
this.handlers[i].callback(msg.id, msg.payload);
}
}
}else if(msg.type === "reply"){
for(var i = 0; i < this.listeners.length; i++){
if(this.listeners[i].id === msg.id){
this.listeners[i].callback(msg.payload);
this.listeners.splice(i, 1);
i--;
break;
}
}
}
return this;
};
this.unlistenById = function(id){
for(var i = 0; i < this.listeners.length; i++){
if(this.listeners[i].id === id){
this.listeners.splice(i, 1);
return true;
}
}
return false;
};
// SETTINGS
if(!x.isUndefined(options)){
if(!x.isUndefined(options.timeout) && x.isNumber(options.timeout)){
this.timeout = options.timeout;
}
if(!x.isUndefined(options.handlers) && x.isArray(options.handlers)){
for(var i = 0; i < options.handlers.length; i++){
if(
x.isObject(options.handlers[i]) &&
x.isString(options.handlers[i].handler) &&
x.isFunction(options.handlers[i].callback)
){
this.handle(options.handlers[i].handler, options.handlers[i].callback);
}
}
}
}
var self = this;
// LISTEN TO MESSAGES
process.on("message", function(msg){
self.receive(msg);
});
return this;
};