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/* | ||
* Copyright 2011-2012 the original author or authors. | ||
* | ||
* Licensed under the Apache License, Version 2.0 (the "License"); | ||
* you may not use this file except in compliance with the License. | ||
* You may obtain a copy of the License at | ||
* | ||
* http://www.apache.org/licenses/LICENSE-2.0 | ||
* | ||
* Unless required by applicable law or agreed to in writing, software | ||
* distributed under the License is distributed on an "AS IS" BASIS, | ||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
* See the License for the specific language governing permissions and | ||
* limitations under the License. | ||
*/ | ||
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var vertx = vertx || {}; | ||
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!function(factory) { | ||
if (typeof define === "function" && define.amd) { | ||
// Expose as an AMD module with SockJS dependency. | ||
// "vertxbus" and "sockjs" names are used because | ||
// AMD module names are derived from file names. | ||
define("vertxbus", ["sockjs"], factory); | ||
} else { | ||
// No AMD-compliant loader | ||
factory(SockJS); | ||
} | ||
}(function(SockJS) { | ||
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vertx.EventBus = function(url, options) { | ||
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var that = this; | ||
var sockJSConn = new SockJS(url, undefined, options); | ||
var handlerMap = {}; | ||
var replyHandlers = {}; | ||
var state = vertx.EventBus.CONNECTING; | ||
var sessionID = null; | ||
var pingTimerID = null; | ||
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that.onopen = null; | ||
that.onclose = null; | ||
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that.login = function(username, password, replyHandler) { | ||
sendOrPub("send", 'vertx.basicauthmanager.login', {username: username, password: password}, function(reply) { | ||
if (reply.status === 'ok') { | ||
that.sessionID = reply.sessionID; | ||
} | ||
if (replyHandler) { | ||
delete reply.sessionID; | ||
replyHandler(reply) | ||
} | ||
}); | ||
} | ||
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that.send = function(address, message, replyHandler) { | ||
sendOrPub("send", address, message, replyHandler) | ||
} | ||
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that.publish = function(address, message, replyHandler) { | ||
sendOrPub("publish", address, message, replyHandler) | ||
} | ||
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that.registerHandler = function(address, handler) { | ||
checkSpecified("address", 'string', address); | ||
checkSpecified("handler", 'function', handler); | ||
checkOpen(); | ||
var handlers = handlerMap[address]; | ||
if (!handlers) { | ||
handlers = [handler]; | ||
handlerMap[address] = handlers; | ||
// First handler for this address so we should register the connection | ||
var msg = { type : "register", | ||
address: address }; | ||
sockJSConn.send(JSON.stringify(msg)); | ||
} else { | ||
handlers[handlers.length] = handler; | ||
} | ||
} | ||
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that.unregisterHandler = function(address, handler) { | ||
checkSpecified("address", 'string', address); | ||
checkSpecified("handler", 'function', handler); | ||
checkOpen(); | ||
var handlers = handlerMap[address]; | ||
if (handlers) { | ||
var idx = handlers.indexOf(handler); | ||
if (idx != -1) handlers.splice(idx, 1); | ||
if (handlers.length == 0) { | ||
// No more local handlers so we should unregister the connection | ||
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var msg = { type : "unregister", | ||
address: address}; | ||
sockJSConn.send(JSON.stringify(msg)); | ||
delete handlerMap[address]; | ||
} | ||
} | ||
} | ||
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that.close = function() { | ||
checkOpen(); | ||
if (pingTimerID) clearInterval(pingTimerID); | ||
state = vertx.EventBus.CLOSING; | ||
sockJSConn.close(); | ||
} | ||
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that.readyState = function() { | ||
return state; | ||
} | ||
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sockJSConn.onopen = function() { | ||
// Send the first ping then send a ping every 5 seconds | ||
sendPing(); | ||
pingTimerID = setInterval(sendPing, 5000); | ||
state = vertx.EventBus.OPEN; | ||
if (that.onopen) { | ||
that.onopen(); | ||
} | ||
}; | ||
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sockJSConn.onclose = function() { | ||
state = vertx.EventBus.CLOSED; | ||
if (that.onclose) { | ||
that.onclose(); | ||
} | ||
}; | ||
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sockJSConn.onmessage = function(e) { | ||
var msg = e.data; | ||
var json = JSON.parse(msg); | ||
var body = json.body; | ||
var replyAddress = json.replyAddress; | ||
var address = json.address; | ||
var replyHandler; | ||
if (replyAddress) { | ||
replyHandler = function(reply, replyHandler) { | ||
// Send back reply | ||
that.send(replyAddress, reply, replyHandler); | ||
}; | ||
} | ||
var handlers = handlerMap[address]; | ||
if (handlers) { | ||
// We make a copy since the handler might get unregistered from within the | ||
// handler itself, which would screw up our iteration | ||
var copy = handlers.slice(0); | ||
for (var i = 0; i < copy.length; i++) { | ||
copy[i](body, replyHandler); | ||
} | ||
} else { | ||
// Might be a reply message | ||
var handler = replyHandlers[address]; | ||
if (handler) { | ||
delete replyHandlers[address]; | ||
handler(body, replyHandler); | ||
} | ||
} | ||
} | ||
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function sendPing() { | ||
var msg = { | ||
type: "ping" | ||
} | ||
sockJSConn.send(JSON.stringify(msg)); | ||
} | ||
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function sendOrPub(sendOrPub, address, message, replyHandler) { | ||
checkSpecified("address", 'string', address); | ||
checkSpecified("replyHandler", 'function', replyHandler, true); | ||
checkOpen(); | ||
var envelope = { type : sendOrPub, | ||
address: address, | ||
body: message }; | ||
if (that.sessionID) { | ||
envelope.sessionID = that.sessionID; | ||
} | ||
if (replyHandler) { | ||
var replyAddress = makeUUID(); | ||
envelope.replyAddress = replyAddress; | ||
replyHandlers[replyAddress] = replyHandler; | ||
} | ||
var str = JSON.stringify(envelope); | ||
sockJSConn.send(str); | ||
} | ||
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function checkOpen() { | ||
if (state != vertx.EventBus.OPEN) { | ||
throw new Error('INVALID_STATE_ERR'); | ||
} | ||
} | ||
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function checkSpecified(paramName, paramType, param, optional) { | ||
if (!optional && !param) { | ||
throw new Error("Parameter " + paramName + " must be specified"); | ||
} | ||
if (param && typeof param != paramType) { | ||
throw new Error("Parameter " + paramName + " must be of type " + paramType); | ||
} | ||
} | ||
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function isFunction(obj) { | ||
return !!(obj && obj.constructor && obj.call && obj.apply); | ||
} | ||
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function makeUUID(){return"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx" | ||
.replace(/[xy]/g,function(a,b){return b=Math.random()*16,(a=="y"?b&3|8:b|0).toString(16)})} | ||
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} | ||
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vertx.EventBus.CONNECTING = 0; | ||
vertx.EventBus.OPEN = 1; | ||
vertx.EventBus.CLOSING = 2; | ||
vertx.EventBus.CLOSED = 3; | ||
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return vertx.EventBus; | ||
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}); |
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var vertx = require('vertx'); | ||
vertx.createHttpServer().requestHandler(function(r) { | ||
r.response.end("test 1\n");}).listen(5555); |