使用Sandstorm

ChenGen — Thu, 12 Oct 2006 03:28:00 GMT

/**
*
*/
package p2hp.datapool.main;

import p2hp.datapool.handler.ReceiveStageHandler;
import p2hp.datapool.message.HelloWorldMsg;
import winseda.sandStorm.api.EventHandlerIF;
import winseda.sandStorm.api.ManagerIF;
import winseda.sandStorm.api.SinkIF;
import winseda.sandStorm.api.StageIF;
import winseda.sandStorm.main.Sandstorm;

/**
* @author chengen
*/
public class SandStormTest {

     /**
     * @param args
      */
     public static void main(String[] args) {

         try {
             // create an instance of SandStorm
            Sandstorm ss = new Sandstorm();
             // get the managerIF through which we create stages
            ManagerIF mgr = ss.getManager();
             // create an instance of a EventHandlerIF which can then receive and
             // process messages
            EventHandlerIF handler1 = new ReceiveStageHandler();
             // create a stage use ManagerIF
            mgr.createStage( " receivestage " , handler1, null );
             // get the StageIF of the stage we created just now whose name is
             // 'receiverstage'
            StageIF receiveStage = mgr.getStage( " receivestage " );
             // get the SinkIF of the stage we created just now and then we use
             // this SinkIF to send messages to the stage
            SinkIF nextStageSink = receiveStage.getSink();
             // send 1000 messages to the stage 'receivestage'
             for ( int i = 0 ; i < 1000 ; i ++ ) {
                 // create an instance of the message
                HelloWorldMsg msg = new HelloWorldMsg( " message " + i);
                System.out.println( " #send message# " + msg);
                Thread.sleep( 500 );
                 // send the message through the SinkIF
                nextStageSink.enqueue(msg);
            }

        } catch (Exception e) {
             // TODO: handle exception
            e.printStackTrace();
        }
    }
}

/**
*
*/
package p2hp.datapool.handler;

import p2hp.datapool.message.HelloWorldMsg;
import winseda.sandStorm.api.ConfigDataIF;
import winseda.sandStorm.api.EventHandlerException;
import winseda.sandStorm.api.EventHandlerIF;
import winseda.sandStorm.api.QueueElementIF;
import winseda.sandStorm.api.SinkIF;
import winseda.sandStorm.api.StagesInitializedSignal;

/**
* @author chengen
*/
public class ReceiveStageHandler implements EventHandlerIF {

     private ConfigDataIF config;

     /*
     * (non-Javadoc)
     *
     * @see winseda.sandStorm.api.EventHandlerIF#destroy()
      */
     public void destroy() throws Exception {
         // TODO Auto-generated method stub

    }

     /*
     * (non-Javadoc)
     *
     * @see winseda.sandStorm.api.EventHandlerIF#handleEvent(winseda.sandStorm.api.QueueElementIF)
      */
     public void handleEvent(QueueElementIF elem) throws EventHandlerException {
         // TODO Auto-generated method stub
         if (elem instanceof HelloWorldMsg) {
            System.out.println( this .getClass() + " ::get message:: " + elem);
        }
    }

     /*
     * (non-Javadoc)
     *
     * @see winseda.sandStorm.api.EventHandlerIF#handleEvents(winseda.sandStorm.api.QueueElementIF[])
      */
     public void handleEvents(QueueElementIF[] elemarr)
             throws EventHandlerException {
         // TODO Auto-generated method stub
         for ( int i = 0 ; i < elemarr.length; i ++ ) {
            handleEvent(elemarr[i]);
        }
    }

     /*
     * (non-Javadoc)
     *
     * @see winseda.sandStorm.api.EventHandlerIF#init(winseda.sandStorm.api.ConfigDataIF)
      */
     public void init(ConfigDataIF config) throws Exception {
         // TODO Auto-generated method stub
         this .config = config;
        System.out.println( " ######receive stage initialized###### " );
    }

}

ChenGen 2006-10-12 11:28 发表评论

SEDA简介

ChenGen — Mon, 25 Sep 2006 06:14:00 GMT

   SEDA(Staged Event-Driven Architecture)被设计用来构造可升级的服务程序。SEDA有三个目标：
      1 支持大规模的并发操作，每个结点能够同时处理上万个客户的服务请求；
      2 当负载大范围变化时展示出他优越的性能；
      3 简化复杂应用程序的设计。

ChenGen 2006-09-25 14:14 发表评论

我和SEDA

ChenGen — Mon, 25 Sep 2006 05:29:00 GMT

2006年暑假，我在我们学院的网络与集群实验室实习，有幸参与了P2HP-2高性能计算项目。P2HP-2采用SEDA构造，因此我对SEDA进行了学习和研究。我在这里把我的一些学习和研究的心得和成果写下来，希望能够给对那些想要用SEDA构造应用程序的朋友们一些帮助。同时也希望对SEDA有过研究的朋友们能够提出宝贵的意见。

ChenGen 2006-09-25 13:29 发表评论

BlogJava-ChenGen-文章分类-SEDA

使用Sandstorm

SEDA简介

我和SEDA