Example usage for org.springframework.amqp.rabbit.connection RabbitResourceHolder RabbitResourceHolder

Introduction

In this page you can find the example usage for org.springframework.amqp.rabbit.connection RabbitResourceHolder RabbitResourceHolder.

Prototype

public RabbitResourceHolder() 

Source Link

Document

Create a new RabbitResourceHolder that is open for resources to be added.

Usage

From source file:org.springframework.amqp.rabbit.connection.ConnectionFactoryUtils.java

/**
 * Obtain a RabbitMQ Channel that is synchronized with the current
 * transaction, if any./*  w  ww  .j  av  a2  s .co m*/
 * 
 * @param connectionFactory
 *            the RabbitMQ ConnectionFactory to bind for (used as
 *            TransactionSynchronizationManager key)
 * @param resourceFactory
 *            the ResourceFactory to use for extracting or creating RabbitMQ
 *            resources
 * @return the transactional Channel, or <code>null</code> if none found
 */
private static RabbitResourceHolder doGetTransactionalResourceHolder(ConnectionFactory connectionFactory,
        ResourceFactory resourceFactory) {

    Assert.notNull(connectionFactory, "ConnectionFactory must not be null");
    Assert.notNull(resourceFactory, "ResourceFactory must not be null");

    RabbitResourceHolder resourceHolder = (RabbitResourceHolder) TransactionSynchronizationManager
            .getResource(connectionFactory);
    if (resourceHolder != null) {
        Channel channel = resourceFactory.getChannel(resourceHolder);
        if (channel != null) {
            return resourceHolder;
        }
    }
    RabbitResourceHolder resourceHolderToUse = resourceHolder;
    if (resourceHolderToUse == null) {
        resourceHolderToUse = new RabbitResourceHolder();
    }
    Connection connection = resourceFactory.getConnection(resourceHolderToUse);
    Channel channel = null;
    try {
        boolean isExistingCon = (connection != null);
        if (!isExistingCon) {
            connection = resourceFactory.createConnection();
            resourceHolderToUse.addConnection(connection);
        }
        channel = consumerChannel.get();
        if (channel == null) {
            channel = resourceFactory.createChannel(connection);
        }
        if (null != channel && channel.isOpen()) {
            resourceHolderToUse.addChannel(channel, connection);
        }

        if (resourceHolderToUse != resourceHolder) {
            bindResourceToTransaction(resourceHolderToUse, connectionFactory,
                    resourceFactory.isSynchedLocalTransactionAllowed());
        }

        return resourceHolderToUse;

    } catch (IOException ex) {
        RabbitUtils.closeChannel(channel);
        RabbitUtils.closeConnection(connection);
        throw new AmqpIOException(ex);
    }
}

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