Java tutorial
/** * Copyright (C) 2012 Ness Computing, Inc. * * 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 com.nesscomputing.amqp; import java.io.IOException; import javax.annotation.Nonnull; import com.nesscomputing.amqp.PublisherCallback.PublisherData; import com.rabbitmq.client.Channel; import com.rabbitmq.client.ConnectionFactory; /** * A general runnable that will keep the connection to an exchange alive and enqueue messages * on the exchange. */ public final class ExchangePublisher<T> extends AbstractPublisher<T> { private final String routingKey; public ExchangePublisher(@Nonnull final ConnectionFactory connectionFactory, @Nonnull final AmqpConfig amqpConfig, @Nonnull final String name, @Nonnull final PublisherCallback<? super T> publisherCallback) { super(connectionFactory, amqpConfig, name, publisherCallback); this.routingKey = amqpConfig.getRoutingKey(); } @Override protected String getServiceType() { return "exchange-publisher"; } @Override protected void connectCallback(@Nonnull final Channel channel) throws IOException { if (getConfig().isDeclaring()) { channel.exchangeDeclare(getName(), getConfig().getExchangeType(), getConfig().isDurable(), getConfig().isAutoDelete(), null); } } @Override protected void publish(final PublisherData publisherData) throws IOException { final Channel channel = channelConnect(); // An exchange has its own name and the default routing key... channel.basicPublish(getName(), routingKey, publisherData.getProperties(), publisherData.getData()); } }