SqsConfiguration.java

/*
 * Copyright 2013-2014 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.cloud.aws.messaging.config.annotation;

import com.amazonaws.services.sqs.AmazonSQSAsync;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.aws.context.config.annotation.ContextDefaultConfigurationRegistrar;
import org.springframework.cloud.aws.core.env.ResourceIdResolver;
import org.springframework.cloud.aws.messaging.config.QueueMessageHandlerFactory;
import org.springframework.cloud.aws.messaging.config.SimpleMessageListenerContainerFactory;
import org.springframework.cloud.aws.messaging.listener.QueueMessageHandler;
import org.springframework.cloud.aws.messaging.listener.SimpleMessageListenerContainer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;

/**
 * @author Alain Sahli
 * @since 1.0
 */
@Configuration
@Import(ContextDefaultConfigurationRegistrar.class)
public class SqsConfiguration {

    @Autowired
    public BeanFactory beanFactory;

    @Autowired(required = false)
    private ResourceIdResolver resourceIdResolver;

    @Autowired(required = false)
    private final SimpleMessageListenerContainerFactory simpleMessageListenerContainerFactory = new SimpleMessageListenerContainerFactory();

    @Autowired(required = false)
    private final QueueMessageHandlerFactory queueMessageHandlerFactory = new QueueMessageHandlerFactory();

    @Bean
    public SimpleMessageListenerContainer simpleMessageListenerContainer(AmazonSQSAsync amazonSqs) {
        if (this.simpleMessageListenerContainerFactory.getAmazonSqs() == null) {
            this.simpleMessageListenerContainerFactory.setAmazonSqs(amazonSqs);
        }
        if (this.simpleMessageListenerContainerFactory.getResourceIdResolver() == null) {
            this.simpleMessageListenerContainerFactory.setResourceIdResolver(this.resourceIdResolver);
        }

        SimpleMessageListenerContainer simpleMessageListenerContainer = this.simpleMessageListenerContainerFactory.createSimpleMessageListenerContainer();
        simpleMessageListenerContainer.setMessageHandler(queueMessageHandler(amazonSqs));
        return simpleMessageListenerContainer;
    }

    @Bean
    public QueueMessageHandler queueMessageHandler(AmazonSQSAsync amazonSqs) {
        if (this.simpleMessageListenerContainerFactory.getQueueMessageHandler() != null) {
            return this.simpleMessageListenerContainerFactory.getQueueMessageHandler();
        } else {
            return getMessageHandler(amazonSqs);
        }
    }

    private QueueMessageHandler getMessageHandler(AmazonSQSAsync amazonSqs) {
        if (this.queueMessageHandlerFactory.getAmazonSqs() == null) {
            this.queueMessageHandlerFactory.setAmazonSqs(amazonSqs);
        }

        this.queueMessageHandlerFactory.setBeanFactory(this.beanFactory);

        return this.queueMessageHandlerFactory.createQueueMessageHandler();
    }
}