利用Redis模拟简单队列工作

【原创】利用Redis模拟简单队列工作

写得有点乱了，勿喷

/**  * @name RedisQueue * @uses simulation queue work * @author  jiang kejun <[e-mail]>  * @since  2013.08.27  * @version $Id: code.php 200 2013.08.27 create jkj $  * @example  :  * # if(php_sapi_name()=='cli'){   #$rq1 = new RedisQueueServer("w1");   #$rq1->openService();   # } */  class RedisQueue{var $_redis = null;var $_key = null;var $_keyno = null;var $retmsg = null;// various statesconst WAITING   = 2;const FINISHED  = 3;const ACCEPTING = 4;const STOPING   = 5;const CALLING   = 6;function __construct(){try{$this->_redis = new Redis();$this->_redis->connect('127.0.0.1', 6379, 10);}catch(RedisException $r){printf("The redis-server is not open or unable to connect [%s:%s]! line:[%s]", '127.0.0.1', 6379, __LINE__ );exit();}$this->_key = date("ymd");$this->_keyno = $this->_key."_no";if(!$this->_redis->exists($this->_keyno)){// base number$this->_redis->incrBy($this->_keyno, 100);}}/** * push a queue  * @access public * * @return bool */function pushQueue(){// push$nr = $this->_redis->incr($this->_keyno);$this->msgHelper(self::WAITING, $nr);return $this->_redis->rPush($this->_key, $nr);}/** * pop the current queue * @access public  *  * @return void */function popQueue(){$this->_redis->lPop($this->_key);}/** * queue length * * @return int */function length(){return $this->_redis->lSize($this->_key);}/** * return message helper (log) * * @param int $type * @param mixed $nr * @return void */function msgHelper($type, $nr){switch($type){case self::WAITING:$array = array('error'=>0,'message'=>'no:'.$nr.';There are '.$this->length().' line up before!');$this->retmsg = json_encode($array);break;case self::STOPING:$array = array('error'=>1,'message'=>'stop all');$this->retmsg = json_encode($array);break;case self::CALLING:$array = array('error'=>0,'message'=>'Call transferred to deal with state after 5 seconds');$this->retmsg = json_encode($array);break;case self::ACCEPTING:$array = array('error'=>0,'message'=>'Is being dealt with business');$this->retmsg = json_encode($array);break;default:$array = array('error'=>2,'message'=>'unknown');$this->retmsg = json_encode($array);break;}}/** * flush all db (cache) * * @return  void */function flush(){echo "clearing..\n";$this->_redis->flushAll();echo "ok\n";}function getQueueInfo(){}/** * destroy * @return void */function __destruct(){$this->_redis->close();}}class RedisQueueServer extends RedisQueue{var $_current = null;var $_service = null;// processing stateconst FINISHED = 1;const SKIP = 2;const WORKING = 0;// initfunction __construct($windowno){parent::__construct();$this->_service = $windowno;echo "Window is open service...\n";}/** * open service * * @return bool */function openService(){if(!$this->_redis->exists($this->_service)){$this->_redis->hSet($this->_service, 'status', 1);}$i=0;while($this->_current = $this->_redis->lGet($this->_key, 0 )){$this->_redis->hSet($this->_service, $this->_current, self::WORKING);$this->msgHelper(parent::CALLING, $this->_current);echo "please ".$this->_current." to ".$this->_service." window transaction\n";echo "input cmd:";$cmd = trim(fgets(STDIN));if($cmd == "1"){echo $this->_current." is working\n";$this->msgHelper(parent::ACCEPTING, $this->_current);// skip}elseif($cmd == "0"){$this->popQueue();$this->_redis->hSet($this->_service, $this->_current, self::SKIP);$i++;continue;}$cmd = trim(fgets(STDIN));// finishedif($cmd == 'y'){$this->popQueue();$this->_redis->hSet($this->_service, $this->_current, self::FINISHED);$this->msgHelper(parent::FINISHED, $this->_current);$i++;}elseif($cmd=='n'){// quit}elseif($cmd=='q'){echo "Is out of the queue...\n";exit();}sleep(2);}if($i){echo "ok,You dealt with $i m of business success";}else{echo "is an empty queue";}//return false;}/** * stop the current service * return void */function stop(){$this->msgHelper(parent::STOPING, 0);$this->_redis->hSet($this->_service, 'status', 2);}}class RedisQueueClient extends RedisQueue{}