org.springframework.integration.core.MessagingTemplate.java Source code

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Here is the source code for org.springframework.integration.core.MessagingTemplate.java

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/*
 * Copyright 2002-2019 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
 *
 *      https://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.integration.core;

import java.util.Properties;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.integration.context.IntegrationContextUtils;
import org.springframework.integration.context.IntegrationProperties;
import org.springframework.integration.support.channel.ChannelResolverUtils;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.core.GenericMessagingTemplate;

/**
 * @author Mark Fisher
 * @author Oleg Zhurakousky
 * @author Gary Russell
 * @author Artem Bilan
 * @since 1.0
 *
 */
public class MessagingTemplate extends GenericMessagingTemplate {

    private BeanFactory beanFactory;

    private volatile boolean throwExceptionOnLateReplySet;

    /**
     * Create a MessagingTemplate with no default channel. Note, that one
     * may be provided by invoking {@link #setDefaultChannel(MessageChannel)}.
     */
    public MessagingTemplate() {
    }

    /**
     * Create a MessagingTemplate with the given default channel.
     * @param defaultChannel the default {@link MessageChannel} for {@code send} operations
     */
    public MessagingTemplate(MessageChannel defaultChannel) {
        super.setDefaultDestination(defaultChannel);
    }

    /**
     * Overridden to set the destination resolver to a {@code integrationChannelResolver} bean.
     */
    @Override
    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
        this.beanFactory = beanFactory; //NOSONAR - non-sync is ok here
        setDestinationResolver(ChannelResolverUtils.getChannelResolver(beanFactory));
    }

    @Override
    public void setThrowExceptionOnLateReply(boolean throwExceptionOnLateReply) {
        super.setThrowExceptionOnLateReply(throwExceptionOnLateReply);
        this.throwExceptionOnLateReplySet = true;
    }

    /**
     * Invokes {@code setDefaultDestination(MessageChannel)} - provided for
     * backward compatibility.
     * @param channel the channel to set.
     */
    public void setDefaultChannel(MessageChannel channel) {
        super.setDefaultDestination(channel);
    }

    @Override
    public Message<?> sendAndReceive(MessageChannel destination, Message<?> requestMessage) {
        if (!this.throwExceptionOnLateReplySet) {
            synchronized (this) {
                if (!this.throwExceptionOnLateReplySet) {
                    Properties integrationProperties = IntegrationContextUtils
                            .getIntegrationProperties(this.beanFactory);
                    Boolean throwExceptionOnLateReply = Boolean.valueOf(
                            integrationProperties.getProperty(IntegrationProperties.THROW_EXCEPTION_ON_LATE_REPLY));
                    super.setThrowExceptionOnLateReply(throwExceptionOnLateReply);
                    this.throwExceptionOnLateReplySet = true;
                }
            }
        }
        return super.sendAndReceive(destination, requestMessage);
    }

    public Object receiveAndConvert(MessageChannel destination, long timeout) {
        Message<?> message = doReceive(destination, timeout);
        if (message != null) {
            return doConvert(message, Object.class);
        } else {
            return null;
        }
    }

    public Message<?> receive(MessageChannel destination, long timeout) {
        return doReceive(destination, timeout);
    }

}