Examples of org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor

Package org.springframework.scheduling.concurrent

Examples of org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor

org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor
JavaBean that allows for configuring a JDK 1.5 {@link java.util.concurrent.ThreadPoolExecutor}in bean style (through its "corePoolSize", "maxPoolSize", "keepAliveSeconds", "queueCapacity" properties), exposing it as a Spring {@link org.springframework.core.task.TaskExecutor}. This is an alternative to configuring a ThreadPoolExecutor instance directly using constructor injection, with a separate {@link ConcurrentTaskExecutor} adapter wrapping it.
For any custom needs, in particular for defining a {@link java.util.concurrent.ScheduledThreadPoolExecutor}, it is recommended to use a straight definition of the Executor instance or a factory method definition that points to the JDK 1.5 {@link java.util.concurrent.Executors} class.To expose such a raw Executor as a Spring {@link org.springframework.core.task.TaskExecutor}, simply wrap it with a {@link ConcurrentTaskExecutor} adapter.
NOTE: This class implements Spring's {@link org.springframework.core.task.TaskExecutor} interface as well as the JDK 1.5{@link java.util.concurrent.Executor} interface, with the former being the primaryinterface, the other just serving as secondary convenience. For this reason, the exception handling follows the TaskExecutor contract rather than the Executor contract, in particular regarding the {@link org.springframework.core.task.TaskRejectedException}. @author Juergen Hoeller @since 2.0 @see org.springframework.core.task.TaskExecutor @see java.util.concurrent.Executor @see java.util.concurrent.ThreadPoolExecutor @see java.util.concurrent.ScheduledThreadPoolExecutor @see java.util.concurrent.Executors @see ConcurrentTaskExecutor

        int total = 10000;
        final int group = total / 20;
        MockEndpoint mock = getMockEndpoint("mock:result");
        mock.expectedMessageCount(total);


        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(20);
        executor.afterPropertiesSet();
        for (int i = 0; i < 20; i++) {
            final int threadCount = i;
            executor.execute(new Runnable() {
                public void run() {
                    int start = threadCount * group;
                    for (int i = 0; i < group; i++) {
                        try {
                            // do some random sleep to simulate spread in user activity

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  }


  @Test
  public void threadNamePrefix() {
    BeanDefinition processorDefinition = new RootBeanDefinition(AsyncAnnotationBeanPostProcessor.class);
    ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
    executor.setThreadNamePrefix("testExecutor");
    executor.afterPropertiesSet();
    processorDefinition.getPropertyValues().add("executor", executor);
    ConfigurableApplicationContext context = initContext(processorDefinition);
    ITestBean testBean = context.getBean("target", ITestBean.class);
    testBean.test();
    testBean.await(3000);

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      return new AsyncBean();
    }


    @Override
    public Executor getAsyncExecutor() {
      ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
      executor.setThreadNamePrefix("Custom-");
      executor.initialize();
      return executor;
    }

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      return new AsyncBeanWithExecutorQualifiedByName();
    }


    @Bean
    public Executor e1() {
      ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
      return executor;
    }

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    }


    @Bean
    @Qualifier("e2")
    public Executor otherExecutor() {
      ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
      return executor;
    }

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    assertEquals(ImmutableMessageChannelInterceptor.class, interceptors.get(interceptors.size()-1).getClass());
  }


  private void testExecutor(String channelName, int corePoolSize, int maxPoolSize, int keepAliveSeconds) {


    ThreadPoolTaskExecutor taskExecutor =
        this.appContext.getBean(channelName + "Executor", ThreadPoolTaskExecutor.class);


    assertEquals(corePoolSize, taskExecutor.getCorePoolSize());
    assertEquals(maxPoolSize, taskExecutor.getMaxPoolSize());
    assertEquals(keepAliveSeconds, taskExecutor.getKeepAliveSeconds());
  }

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    AbstractSubscribableChannel channel = this.customContext.getBean(
        "clientOutboundChannel", AbstractSubscribableChannel.class);


    assertEquals(3, channel.getInterceptors().size());


    ThreadPoolTaskExecutor taskExecutor = this.customContext.getBean(
        "clientOutboundChannelExecutor", ThreadPoolTaskExecutor.class);


    assertEquals(21, taskExecutor.getCorePoolSize());
    assertEquals(22, taskExecutor.getMaxPoolSize());
    assertEquals(23, taskExecutor.getKeepAliveSeconds());
  }

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    AbstractSubscribableChannel channel = this.customContext.getBean(
        "brokerChannel", AbstractSubscribableChannel.class);


    assertEquals(4, channel.getInterceptors().size());


    ThreadPoolTaskExecutor taskExecutor = this.customContext.getBean(
        "brokerChannelExecutor", ThreadPoolTaskExecutor.class);


    assertEquals(31, taskExecutor.getCorePoolSize());
    assertEquals(32, taskExecutor.getMaxPoolSize());
    assertEquals(33, taskExecutor.getKeepAliveSeconds());
  }

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  }


  @Test
  public void threadPoolSizeDefault() {
    String name = "clientInboundChannelExecutor";
    ThreadPoolTaskExecutor executor = this.defaultContext.getBean(name, ThreadPoolTaskExecutor.class);
    assertEquals(Runtime.getRuntime().availableProcessors() * 2, executor.getCorePoolSize());
    // No way to verify queue capacity


    name = "clientOutboundChannelExecutor";
    executor = this.defaultContext.getBean(name, ThreadPoolTaskExecutor.class);
    assertEquals(Runtime.getRuntime().availableProcessors() * 2, executor.getCorePoolSize());


    name = "brokerChannelExecutor";
    executor = this.defaultContext.getBean(name, ThreadPoolTaskExecutor.class);
    assertEquals(0, executor.getCorePoolSize());
    assertEquals(1, executor.getMaxPoolSize());
  }

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  public void setup() {
    this.messageChannel = new StubMessageChannel();
    this.template = new GenericMessagingTemplate();
    this.template.setDefaultDestination(this.messageChannel);
    this.template.setDestinationResolver(new TestDestinationResolver());
    this.executor = new ThreadPoolTaskExecutor();
    this.executor.afterPropertiesSet();
  }

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