Examples with ExecutorChannel org.springframework.integration.channel.ExecutorChannel used on opensource projects

Example 1 with ExecutorChannel

use of org.springframework.integration.channel.ExecutorChannel in project spring-integration by spring-projects.

the class PointToPointChannelParser method buildBeanDefinition.

@Override
protected BeanDefinitionBuilder buildBeanDefinition(Element element, ParserContext parserContext) {
    BeanDefinitionBuilder builder = null;
    Element queueElement = null;
    String fixedSubscriberChannel = element.getAttribute("fixed-subscriber");
    boolean isFixedSubscriber = "true".equals(fixedSubscriberChannel.trim().toLowerCase());
    // configure a queue-based channel if any queue sub-element is defined
    String channel = element.getAttribute(ID_ATTRIBUTE);
    if ((queueElement = DomUtils.getChildElementByTagName(element, "queue")) != null) {
        builder = BeanDefinitionBuilder.genericBeanDefinition(QueueChannel.class);
        boolean hasStoreRef = this.parseStoreRef(builder, queueElement, channel, false);
        boolean hasQueueRef = this.parseQueueRef(builder, queueElement);
        if (!hasStoreRef || !hasQueueRef) {
            boolean hasCapacity = this.parseQueueCapacity(builder, queueElement);
            if (hasCapacity && hasQueueRef) {
                parserContext.getReaderContext().error("The 'capacity' attribute is not allowed when providing a 'ref' to a custom queue.", element);
            }
            if (hasCapacity && hasStoreRef) {
                parserContext.getReaderContext().error("The 'capacity' attribute is not allowed" + " when providing a 'message-store' to a custom MessageGroupStore.", element);
            }
        }
        if (hasStoreRef && hasQueueRef) {
            parserContext.getReaderContext().error("The 'message-store' attribute is not allowed when providing a 'ref' to a custom queue.", element);
        }
    } else if ((queueElement = DomUtils.getChildElementByTagName(element, "priority-queue")) != null) {
        builder = BeanDefinitionBuilder.genericBeanDefinition(PriorityChannel.class);
        boolean hasCapacity = this.parseQueueCapacity(builder, queueElement);
        String comparatorRef = queueElement.getAttribute("comparator");
        if (StringUtils.hasText(comparatorRef)) {
            builder.addConstructorArgReference(comparatorRef);
        }
        if (parseStoreRef(builder, queueElement, channel, true)) {
            if (StringUtils.hasText(comparatorRef)) {
                parserContext.getReaderContext().error("The 'message-store' attribute is not allowed" + " when providing a 'comparator' to a priority queue.", element);
            }
            if (hasCapacity) {
                parserContext.getReaderContext().error("The 'capacity' attribute is not allowed" + " when providing a 'message-store' to a custom MessageGroupStore.", element);
            }
        }
    } else if ((queueElement = DomUtils.getChildElementByTagName(element, "rendezvous-queue")) != null) {
        builder = BeanDefinitionBuilder.genericBeanDefinition(RendezvousChannel.class);
    }
    Element dispatcherElement = DomUtils.getChildElementByTagName(element, "dispatcher");
    // verify that a dispatcher is not provided if a queue sub-element exists
    if (queueElement != null && dispatcherElement != null) {
        parserContext.getReaderContext().error("The 'dispatcher' sub-element and any queue sub-element are mutually exclusive.", element);
        return null;
    }
    if (queueElement != null) {
        if (isFixedSubscriber) {
            parserContext.getReaderContext().error("The 'fixed-subscriber' attribute is not allowed when a <queue/> child element is present.", element);
        }
        return builder;
    }
    if (dispatcherElement == null) {
        // configure the default DirectChannel with a RoundRobinLoadBalancingStrategy
        builder = BeanDefinitionBuilder.genericBeanDefinition(isFixedSubscriber ? FixedSubscriberChannel.class : DirectChannel.class);
    } else {
        if (isFixedSubscriber) {
            parserContext.getReaderContext().error("The 'fixed-subscriber' attribute is not allowed" + " when a <dispatcher/> child element is present.", element);
        }
        // configure either an ExecutorChannel or DirectChannel based on existence of 'task-executor'
        String taskExecutor = dispatcherElement.getAttribute("task-executor");
        if (StringUtils.hasText(taskExecutor)) {
            builder = BeanDefinitionBuilder.genericBeanDefinition(ExecutorChannel.class);
            builder.addConstructorArgReference(taskExecutor);
        } else {
            builder = BeanDefinitionBuilder.genericBeanDefinition(DirectChannel.class);
        }
        // unless the 'load-balancer' attribute is explicitly set to 'none'
        // or 'load-balancer-ref' is explicitly configured,
        // configure the default RoundRobinLoadBalancingStrategy
        String loadBalancer = dispatcherElement.getAttribute("load-balancer");
        String loadBalancerRef = dispatcherElement.getAttribute("load-balancer-ref");
        if (StringUtils.hasText(loadBalancer) && StringUtils.hasText(loadBalancerRef)) {
            parserContext.getReaderContext().error("'load-balancer' and 'load-balancer-ref' are mutually exclusive", element);
        }
        if (StringUtils.hasText(loadBalancerRef)) {
            builder.addConstructorArgReference(loadBalancerRef);
        } else {
            if ("none".equals(loadBalancer)) {
                builder.addConstructorArgValue(null);
            }
        }
        IntegrationNamespaceUtils.setValueIfAttributeDefined(builder, dispatcherElement, "failover");
        IntegrationNamespaceUtils.setValueIfAttributeDefined(builder, dispatcherElement, "max-subscribers");
    }
    return builder;
}

Example 2 with ExecutorChannel

use of org.springframework.integration.channel.ExecutorChannel in project spring-integration by spring-projects.

the class ChannelParserTests method testExecutorChannelNoConverter.

@Test
public void testExecutorChannelNoConverter() throws InterruptedException {
    ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("ChannelParserTests-no-converter-context.xml", this.getClass());
    MessageChannel channel = context.getBean("executorChannel", MessageChannel.class);
    assertThat(channel, instanceOf(ExecutorChannel.class));
    assertNotNull(TestUtils.getPropertyValue(channel, "messageConverter"));
    assertNotNull(TestUtils.getPropertyValue(channel, "messageConverter.conversionService"));
    context.close();
}

Example 3 with ExecutorChannel

use of org.springframework.integration.channel.ExecutorChannel in project spring-integration by spring-projects.

the class ChannelParserTests method testExecutorChannel.

@Test
public void testExecutorChannel() throws InterruptedException {
    MessageChannel channel = context.getBean("executorChannel", MessageChannel.class);
    assertThat(channel, instanceOf(ExecutorChannel.class));
    assertNotNull(TestUtils.getPropertyValue(channel, "messageConverter"));
    assertNotNull(TestUtils.getPropertyValue(channel, "messageConverter.conversionService"));
}