Implement alias.

examples/alias.php

@@ -0,0 +1,54 @@
+<?php
+//引入API库
+require "../yunba.php";
+
+//构造实例
+$yunba = new Yunba(array(
+	"appkey" => "535f78721a88e6c860569ac6"
+));
+
+//初始化
+$yunba->init(function ($success) {
+	echo "[YunBa]init " . ($success ? "success" : "fail") . "\n";
+});
+
+//连接
+$yunba->connect(function ($success) {
+	if ($success) {
+		echo "[YunBa]connect success\n";
+	}
+	else {
+		echo "[YunBa]connect fail\n";
+	}
+});
+
+//等待连接完毕
+sleep(1);
+
+//设置别名alias1
+$yunba->set_alias(array(
+	"alias" => "alias1"
+), function ($success) {
+	echo "[Yunba]set alias to alias1 " . ($success ? "success" : "fail") . "\n";
+}, function ($data) {
+	echo "[YunBa]received " . var_export($data, true) . "\n";
+});
+
+//获取当前别名
+$yunba->get_alias(function($alias){
+	echo "[YunBa]current alias is " . $alias . "\n";
+});
+
+
+//发布消息到alias1
+$yunba->publish_to_alias(array(
+	"alias" => "alias1",
+	"msg" => "Hello,World"
+), function ($success) {
+	echo "[YunBa]publish to alias1 " . ($success ? "success" : "fail") . "\n";
+});
+
+//等待通讯
+$yunba->wait();
+
+?>

yunba.php

@@ -673,6 +673,8 @@ public function init($initCallback = null, $recCallback = null) {
 		$this->on("message", array($this, "_messageCallbackMethod"));
 		$this->on("puback", array($this, "_publishCallbackMethod"));
 		$this->on("unsuback", array($this, "_unsubscribeCallbackMethod"));
+		$this->on("set_alias_ack", array($this, "_setAliasCallbackMethod"));
+		$this->on("alias", array($this, "_getAliasCallbackMethod"));
 		$this->_client->init();
 	}
 
@@ -776,6 +778,54 @@ public function publish (array $args, $callback = null) {
 		), $callback);
 	}
 
+	/**
+	 * 设置别名
+	 *
+	 * @param array $args 参数，为 alias
+	 * @param callable $setAliasCallback 设置结果回调
+	 * @param callable $messageCallback 消息接收回调
+	 */
+	public function set_alias (array $args, $setAliasCallback = null, $messageCallback = null) {
+		$alias = isset($args["alias"]) ? $args["alias"] : "";
+
+		if (is_callable($messageCallback)) {
+			if (!isset($this->_messageCallbacks[$alias])) {
+				$this->_messageCallbacks[$alias] = array();
+			}
+			$this->_messageCallbacks[$alias][] = $messageCallback;
+		}
+
+		$this->emit("set_alias", array(
+				"alias" => $alias
+		), $setAliasCallback);
+	}
+
+	/**
+	 * 获取别名
+	 *
+	 * @param callable $callback 回调
+	 */
+	public function get_alias ($callback = null) {
+		$this->emit("get_alias", array(), $callback);
+	}
+
+	/**
+	 * 向用户别名发送消息, 用于实现点对点的消息发送。
+	 *
+	 * @param array $args 参数，包括 alias, msg 两个参数
+	 * @param callable $callback 回调
+	 */
+	public function publish_to_alias (array $args, $callback = null) {
+		if (isset($args["alias"]) and isset($args["msg"])){
+			$alias = $args["alias"];
+			$msg = $args["msg"];
+			$this->emit("publish_to_alias", array(
+					"alias" => $alias,
+					"msg" => $msg
+			), $callback);
+		}
+	}
+
 	/**
 	 * 等待通讯
 	 */
@@ -850,6 +900,20 @@ public function _unsubscribeCallbackMethod($data) {
 		}
 	}
 
+	public function _setAliasCallbackMethod($data) {
+		$callback = $this->_fetchCallback();
+		if ($callback) {
+			call_user_func($callback, $data["success"]);
+		}
+	}
+
+	public function _getAliasCallbackMethod($data) {
+		$callback = $this->_fetchCallback();
+		if ($callback) {
+			call_user_func($callback, $data["alias"]);
+		}
+	}
+
 	public function __call($method, $args) {
 		if (preg_match("/^push_callback_(\\d+)$/", $method, $match)) {
 			$callId = $match[1];