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写一个简单的工作流（三）

工作流
2023-03-14 10:24:41 时间
  上午测试了下并发情况下的表现，测试场景：一个有20个节点，包括选择、顺序、并行路由的流程，所有节点都设置为自动执行，1000个线程并发启动案例，也就是这个流程同时有1000个案例在跑，全部跑完结果差强人意，比单线程慢了接近30倍。仔细调整了算法和加锁粒度，尽管整体性能有所提高，但是多线程和单线程间执行的差距仍然没有多大变化，性能瓶颈还是在核心的调度算法上，还需要分析下。测试程序如下：
package net.rubyeye.insect.workflow.test;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CyclicBarrier;

import net.rubyeye.insect.workflow.Place;
import net.rubyeye.insect.workflow.Token;
import net.rubyeye.insect.workflow.Transition;
import net.rubyeye.insect.workflow.WorkFlow;
import net.rubyeye.insect.workflow.WorkFlowManager;
import net.rubyeye.insect.workflow.basic.BasicWorkflowManager;
import net.rubyeye.insect.workflow.comm.TransitionType;
import net.rubyeye.insect.workflow.config.DefaultConfiguration;
import junit.framework.TestCase;

public class CompositeProcessTest extends TestCase {
    private WorkFlowManager wm;

    WorkFlow composite;

    private CyclicBarrier barrier;

    private static final int total = 1000;

    @Override
    protected void setUp() throws Exception {
        this.barrier = new CyclicBarrier(total + 1);
        wm = new BasicWorkflowManager();
        wm.setConfiguration(new DefaultConfiguration());

        WorkFlow sequence = wm.getWorkFlow("sequence");
        WorkFlow concurrency = wm.getWorkFlow("concurrency");
        WorkFlow choose = wm.getWorkFlow("choose");

        // 组合流程
        composite = new WorkFlow();
        composite.setName("composite");
        composite.setId(100);

        wm.saveWorkFlow(composite);

        // 修改开始结束节点的输入输出库所
        sequence.getEnd().setType(TransitionType.NORMAL);
        sequence.getEnd().setOutputs(concurrency.getStart().getInputs());

        concurrency.getEnd().setType(TransitionType.NORMAL);
        concurrency.getEnd().setOutputs(choose.getStart().getInputs());

        composite.setStart(sequence.getStart());
        composite.setEnd(choose.getEnd());
        List<Transition> transitions = new ArrayList<Transition>();
        transitions.addAll(sequence.getTransitions());
        transitions.addAll(concurrency.getTransitions());
        transitions.addAll(choose.getTransitions());
        composite.setTransitions(transitions);
    }

    public void testConcurrencyCompositeProcesss() throws Exception {
        for (int i = 0; i < total; i++) {
            new FlowThread().start();
        }
        barrier.await();
        long start = System.currentTimeMillis();
        barrier.await();
        long end = System.currentTimeMillis();
        System.out.println("创建" + total + "个流程并发运行完毕\n花费时间:" + (end - start)
                / 1000.0 + "秒");
        for (Transition transition : composite.getTransitions()) {
            System.out.println(transition.getName() + "  "
                    + transition.isEnable());
            for (Place place : transition.getOutputs()) {
                System.out.println("place " + place.getId() + " "
                        + place.getTokens().size());
            }
        }
    }

    public void testCompositeProcesss() throws Exception {
        long start = System.currentTimeMillis();
        for (int i = 0; i < total; i++) {
            Token token1 = wm.startWorkFlow("composite");
            token1.setAttribute("name", "dennis");
            token1.setAttribute("num", 21);
            wm.doAction(token1.getId());
            assertTrue(token1.isFinished());
        }
        long end = System.currentTimeMillis();
        System.out.println("创建" + total + "个流程运行完毕\n花费时间:" + (end - start)
                / 1000.0 + "秒");
    }

    class FlowThread extends Thread {

        @Override
        public void run() {
            try {
                barrier.await();
                // wm = new BasicWorkflowManager();
                Token token1 = wm.startWorkFlow("composite");
                token1.setAttribute("name", "dennis");
                token1.setAttribute("num", 21);
                wm.doAction(token1.getId());
                assertTrue(token1.isFinished());
                barrier.await();
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }

    }
}
文章转自庄周梦蝶  ，原文发布时间2007-10-12

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