添加后台代理代码

codes/agent/game/dlweb/api/third/taobao/top/ClusterTopClient.php

@@ -0,0 +1,199 @@
+<?php
+class ClusterTopClient extends TopClient {
+
+	private static $dnsconfig;
+	private static $syncDate = 0;
+	private static $applicationVar ;
+	private static $cfgDuration = 10;
+
+	public function __construct($appkey = "",$secretKey = ""){
+		ClusterTopClient::$applicationVar = new ApplicationVar;
+		$this->appkey = $appkey;
+		$this->secretKey = $secretKey ;
+		$saveConfig = ClusterTopClient::$applicationVar->getValue();
+
+		if($saveConfig){
+			$tmpConfig = $saveConfig['dnsconfig'];
+			ClusterTopClient::$dnsconfig = $this->object_to_array($tmpConfig);
+			unset($tmpConfig);
+
+			ClusterTopClient::$syncDate = $saveConfig['syncDate'];
+			if(!ClusterTopClient::$syncDate)
+				ClusterTopClient::$syncDate = 0;
+		}
+	}
+
+	public function __destruct(){
+		if(ClusterTopClient::$dnsconfig && ClusterTopClient::$syncDate){
+			ClusterTopClient::$applicationVar->setValue("dnsconfig",ClusterTopClient::$dnsconfig);
+			ClusterTopClient::$applicationVar->setValue("syncDate",ClusterTopClient::$syncDate);
+			ClusterTopClient::$applicationVar->write();
+		}
+	}
+
+	public function execute($request = null, $session = null,$bestUrl = null){
+		$currentDate = date('U');
+		$syncDuration = $this->getDnsConfigSyncDuration();
+		$bestUrl = $this->getBestVipUrl($this->gatewayUrl,$request->getApiMethodName(),$session);
+		if($currentDate - ClusterTopClient::$syncDate > $syncDuration * 60){
+			$httpdns = new HttpdnsGetRequest;
+			ClusterTopClient::$dnsconfig = json_decode(parent::execute($httpdns,null,$bestUrl)->result,true);
+			$syncDate = date('U');
+			ClusterTopClient::$syncDate = $syncDate ;
+		}
+		return parent::execute($request,$session,$bestUrl);
+	}
+
+	private function getDnsConfigSyncDuration(){
+		if(ClusterTopClient::$cfgDuration){
+			return ClusterTopClient::$cfgDuration;
+		}
+		if(!ClusterTopClient::$dnsconfig){
+			return ClusterTopClient::$cfgDuration;
+		}
+		$config = json_encode(ClusterTopClient::$dnsconfig);
+		if(!$config){
+			return ClusterTopClient::$cfgDuration;
+		}
+		$config = ClusterTopClient::$dnsconfig['config'];
+		$duration = $config['interval'];
+		ClusterTopClient::$cfgDuration = $duration;
+
+		return ClusterTopClient::$cfgDuration;
+	}
+
+	private function getBestVipUrl($url,$apiname = null,$session = null){
+		$config = ClusterTopClient::$dnsconfig['config'];
+		$degrade = $config['degrade'];
+		if(strcmp($degrade,'true') == 0){
+			return $url;
+		}		
+		$currentEnv = $this->getEnvByApiName($apiname,$session);
+		$vip = $this->getVipByEnv($url,$currentEnv);
+		if($vip)
+			return $vip;
+		return $url;
+	}
+
+	private function getVipByEnv($comUrl,$currentEnv){
+		$urlSchema = parse_url($comUrl);
+		if(!$urlSchema)
+			return null;
+		if(!ClusterTopClient::$dnsconfig['env'])
+			return null;
+		
+		if(!array_key_exists($currentEnv,ClusterTopClient::$dnsconfig['env']))
+			return null;
+
+		$hostList = ClusterTopClient::$dnsconfig['env'][$currentEnv];
+		if(!$hostList)
+			return null ;
+
+		$vipList = null;
+		foreach ($hostList as $key => $value) {
+			if(strcmp($key,$urlSchema['host']) == 0 && strcmp($value['proto'],$urlSchema['scheme']) == 0){
+				$vipList = $value;
+				break;
+			}
+		}
+		$vip = $this->getRandomWeightElement($vipList['vip']);
+		
+		if($vip){
+			return $urlSchema['scheme']."://".$vip.$urlSchema['path'];
+		}
+		return null;
+	}
+
+	private function getEnvByApiName($apiName,$session=""){
+		$apiCfgArray = ClusterTopClient::$dnsconfig['api'];
+		if($apiCfgArray){	
+			if(array_key_exists($apiName,$apiCfgArray)){
+				$apiCfg = $apiCfgArray[$apiName];
+				if(array_key_exists('user',$apiCfg)){
+					$userFlag = $apiCfg['user'];
+					$flag = $this->getUserFlag($session);
+					if($userFlag && $flag ){
+						return $this->getEnvBySessionFlag($userFlag,$flag);
+					}else{
+						return $this->getRandomWeightElement($apiCfg['rule']);
+					}
+				}
+			}
+		}
+		return $this->getDeafultEnv();
+	}
+
+	private function getUserFlag($session){
+		if($session && strlen($session) > 5){
+			if($session[0] == '6' || $session[0] == '7'){
+				return $session[strlen($session) -1];
+			}else if($session[0] == '5' || $session[0] == '8'){
+				return $session[5];
+			}
+		}
+		return null;
+	}
+
+	private function getEnvBySessionFlag($targetConfig,$flag){
+		if($flag){
+			$userConf = ClusterTopClient::$dnsconfig['user'];
+			$cfgArry = $userConf[$targetConfig];
+			foreach ($cfgArry as $key => $value) {
+				if(in_array($flag,$value))
+					return $key;
+			}
+		}else{
+			return null;
+		}
+	}
+
+	private function getRandomWeightElement($elements){
+		$totalWeight = 0;
+		if($elements){
+			foreach ($elements as $ele) {
+				$weight = $this->getElementWeight($ele);
+				$r = $this->randomFloat() * ($weight + $totalWeight);
+				if($r >= $totalWeight){
+					$selected = $ele;
+				}
+				$totalWeight += $weight;
+			}
+			if($selected){
+				return $this->getElementValue($selected);
+			}
+		}
+		return null;
+
+	}
+
+	private function getElementWeight($ele){
+		$params = explode('|', $ele);
+		return floatval($params[1]);
+	}
+	private function getElementValue($ele){
+		$params = explode('|', $ele);
+		return $params[0];		
+	}
+
+	private function getDeafultEnv(){
+		return ClusterTopClient::$dnsconfig['config']['def_env'];
+	}
+
+	private static function startsWith($haystack, $needle) {
+    	return $needle === "" || strpos($haystack, $needle) === 0;
+	}
+
+	private function object_to_array($obj) 
+	{ 
+    	$_arr= is_object($obj) ? get_object_vars($obj) : $obj; 
+    	foreach($_arr as $key=> $val) 
+    	{ 
+        	$val= (is_array($val) || is_object($val))? $this->object_to_array($val) : $val; 
+        	$arr[$key] = $val; 
+    	} 
+    	return$arr; 
+	}
+
+	private function randomFloat($min = 0, $max = 1) { return $min + mt_rand() / mt_getrandmax() * ($max - $min); }
+}
+?>