Example usage for org.springframework.amqp.rabbit.listener SimpleMessageListenerContainer setTaskExecutor

Introduction

In this page you can find the example usage for org.springframework.amqp.rabbit.listener SimpleMessageListenerContainer setTaskExecutor.

Prototype

public void setTaskExecutor(Executor taskExecutor) 

Source Link

Document

Set a task executor for the container - used to create the consumers not at runtime.

Usage

From source file:org.springframework.xd.dirt.integration.rabbit.RabbitMessageBus.java

private void doRegisterConsumer(String name, MessageChannel moduleInputChannel, Queue queue,
        RabbitPropertiesAccessor properties, boolean isPubSub) {
    // Fix for XD-2503
    // Temporarily overrides the thread context classloader with the one where the SimpleMessageListenerContainer is defined
    // This allows for the proxying that happens while initializing the SimpleMessageListenerContainer to work correctly
    ClassLoader originalClassloader = Thread.currentThread().getContextClassLoader();
    try {/*from  w  w w .  j  a  va 2s  .c  o m*/
        ClassUtils.overrideThreadContextClassLoader(SimpleMessageListenerContainer.class.getClassLoader());
        SimpleMessageListenerContainer listenerContainer = new SimpleMessageListenerContainer(
                this.connectionFactory);
        listenerContainer.setAcknowledgeMode(properties.getAcknowledgeMode(this.defaultAcknowledgeMode));
        listenerContainer.setChannelTransacted(properties.getTransacted(this.defaultChannelTransacted));
        listenerContainer
                .setDefaultRequeueRejected(properties.getRequeueRejected(this.defaultDefaultRequeueRejected));
        if (!isPubSub) {
            int concurrency = properties.getConcurrency(this.defaultConcurrency);
            concurrency = concurrency > 0 ? concurrency : 1;
            listenerContainer.setConcurrentConsumers(concurrency);
            int maxConcurrency = properties.getMaxConcurrency(this.defaultMaxConcurrency);
            if (maxConcurrency > concurrency) {
                listenerContainer.setMaxConcurrentConsumers(maxConcurrency);
            }
        }
        listenerContainer.setPrefetchCount(properties.getPrefetchCount(this.defaultPrefetchCount));
        listenerContainer.setTxSize(properties.getTxSize(this.defaultTxSize));
        listenerContainer.setTaskExecutor(new SimpleAsyncTaskExecutor(queue.getName() + "-"));
        listenerContainer.setQueues(queue);
        int maxAttempts = properties.getMaxAttempts(this.defaultMaxAttempts);
        if (maxAttempts > 1) {
            RetryOperationsInterceptor retryInterceptor = RetryInterceptorBuilder.stateless()
                    .maxAttempts(maxAttempts)
                    .backOffOptions(properties.getBackOffInitialInterval(this.defaultBackOffInitialInterval),
                            properties.getBackOffMultiplier(this.defaultBackOffMultiplier),
                            properties.getBackOffMaxInterval(this.defaultBackOffMaxInterval))
                    .recoverer(new RejectAndDontRequeueRecoverer()).build();
            listenerContainer.setAdviceChain(new Advice[] { retryInterceptor });
        }
        listenerContainer.setAfterReceivePostProcessors(this.decompressingPostProcessor);
        listenerContainer.setMessagePropertiesConverter(RabbitMessageBus.inboundMessagePropertiesConverter);
        listenerContainer.afterPropertiesSet();
        AmqpInboundChannelAdapter adapter = new AmqpInboundChannelAdapter(listenerContainer);
        adapter.setBeanFactory(this.getBeanFactory());
        DirectChannel bridgeToModuleChannel = new DirectChannel();
        bridgeToModuleChannel.setBeanFactory(this.getBeanFactory());
        bridgeToModuleChannel.setBeanName(name + ".bridge");
        adapter.setOutputChannel(bridgeToModuleChannel);
        adapter.setBeanName("inbound." + name);
        DefaultAmqpHeaderMapper mapper = new DefaultAmqpHeaderMapper();
        mapper.setRequestHeaderNames(properties.getRequestHeaderPattens(this.defaultRequestHeaderPatterns));
        mapper.setReplyHeaderNames(properties.getReplyHeaderPattens(this.defaultReplyHeaderPatterns));
        adapter.setHeaderMapper(mapper);
        adapter.afterPropertiesSet();
        Binding consumerBinding = Binding.forConsumer(name, adapter, moduleInputChannel, properties);
        addBinding(consumerBinding);
        ReceivingHandler convertingBridge = new ReceivingHandler();
        convertingBridge.setOutputChannel(moduleInputChannel);
        convertingBridge.setBeanName(name + ".convert.bridge");
        convertingBridge.afterPropertiesSet();
        bridgeToModuleChannel.subscribe(convertingBridge);
        consumerBinding.start();
    } finally {
        Thread.currentThread().setContextClassLoader(originalClassloader);
    }
}

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