| /** |
| * 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.hazelcast.seda; |
| |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.camel.AsyncCallback; |
| import org.apache.camel.AsyncProcessor; |
| import org.apache.camel.Consumer; |
| import org.apache.camel.Endpoint; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Processor; |
| import org.apache.camel.impl.DefaultConsumer; |
| import org.apache.camel.impl.DefaultExchange; |
| import org.apache.camel.impl.DefaultExchangeHolder; |
| import org.apache.camel.impl.converter.AsyncProcessorTypeConverter; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Implementation of Hazelcast SEDA {@link Consumer} component. |
| */ |
| public class HazelcastSedaConsumer extends DefaultConsumer implements Runnable { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(HazelcastSedaConsumer.class); |
| private final HazelcastSedaEndpoint endpoint; |
| private final AsyncProcessor processor; |
| private ExecutorService executor; |
| |
| public HazelcastSedaConsumer(final Endpoint endpoint, final Processor processor) { |
| super(endpoint, processor); |
| this.endpoint = (HazelcastSedaEndpoint) endpoint; |
| this.processor = AsyncProcessorTypeConverter.convert(processor); |
| } |
| |
| @Override |
| protected void doStart() throws Exception { |
| int concurrentConsumers = endpoint.getConfiguration().getConcurrentConsumers(); |
| executor = endpoint.getCamelContext().getExecutorServiceStrategy().newFixedThreadPool(this, endpoint.getEndpointUri(), concurrentConsumers); |
| for (int i = 0; i < concurrentConsumers; i++) { |
| executor.execute(this); |
| } |
| |
| super.doStart(); |
| } |
| |
| @Override |
| protected void doStop() throws Exception { |
| if (executor != null) { |
| endpoint.getCamelContext().getExecutorServiceStrategy().shutdownNow(executor); |
| executor = null; |
| } |
| super.doStop(); |
| } |
| |
| public void run() { |
| final BlockingQueue queue = endpoint.getQueue(); |
| |
| while (queue != null && isRunAllowed()) { |
| final Exchange exchange = new DefaultExchange(this.getEndpoint().getCamelContext()); |
| |
| try { |
| final Object body = queue.poll(endpoint.getConfiguration().getPollInterval(), TimeUnit.MILLISECONDS); |
| |
| if (body != null) { |
| if (body instanceof DefaultExchangeHolder) { |
| DefaultExchangeHolder.unmarshal(exchange, (DefaultExchangeHolder) body); |
| } else { |
| exchange.getIn().setBody(body); |
| } |
| try { |
| // process using the asynchronous routing engine |
| processor.process(exchange, new AsyncCallback() { |
| public void done(boolean asyncDone) { |
| // noop |
| } |
| }); |
| |
| if (exchange.getException() != null) { |
| getExceptionHandler().handleException("Error processing exchange", exchange, exchange.getException()); |
| } |
| |
| } catch (Exception e) { |
| LOG.error("Hzlq Exception caught: " + e, e); |
| } |
| } |
| } catch (InterruptedException e) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Hzlq Consumer Interrupted: " + e, e); |
| } |
| continue; |
| } catch (Throwable e) { |
| getExceptionHandler().handleException("Error processing exchange", exchange, e); |
| } |
| } |
| } |
| |
| } |