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The Core Camel Java DSL based router
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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.camel.component.direct;

import org.apache.camel.AsyncCallback;
import org.apache.camel.Exchange;
import org.apache.camel.impl.DefaultAsyncProducer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * The direct producer.
 *
 * @version 
 */
public class DirectProducer extends DefaultAsyncProducer {
    private static final transient Logger LOG = LoggerFactory.getLogger(DirectProducer.class);
    private final DirectEndpoint endpoint;

    public DirectProducer(DirectEndpoint endpoint) {
        super(endpoint);
        this.endpoint = endpoint;
    }

    public void process(Exchange exchange) throws Exception {
        if (endpoint.getConsumer() == null) {
            if (endpoint.isFailIfNoConsumers()) {
                throw new DirectConsumerNotAvailableException("No consumers available on endpoint: " + endpoint, exchange);
            } else {
                LOG.debug("message ignored, no consumers available on endpoint: {}", endpoint);
            }
        } else {
            endpoint.getConsumer().getProcessor().process(exchange);
        }
    }

    public boolean process(Exchange exchange, AsyncCallback callback) {
        if (endpoint.getConsumer() == null) {
            if (endpoint.isFailIfNoConsumers()) {
                // indicate its done synchronously
                exchange.setException(new DirectConsumerNotAvailableException("No consumers available on endpoint: " + endpoint, exchange));
            } else {
                LOG.debug("message ignored, no consumers available on endpoint: {}", endpoint);
            }
            callback.done(true);
            return true;
        } else {
            return endpoint.getConsumer().getAsyncProcessor().process(exchange, callback);
        }
    }

}