| /** |
| * 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.guava.eventbus; |
| |
| import org.apache.camel.AsyncCallback; |
| import org.apache.camel.AsyncProcessor; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Processor; |
| import org.apache.camel.util.AsyncProcessorConverterHelper; |
| import org.apache.camel.util.ObjectHelper; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /* |
| * Handler responsible for receiving events from the Guava event bus and sending them to the Camel infrastructure. |
| */ |
| public class CamelEventHandler { |
| |
| protected final Logger log = LoggerFactory.getLogger(CamelEventHandler.class); |
| protected final GuavaEventBusEndpoint eventBusEndpoint; |
| protected final AsyncProcessor processor; |
| |
| public CamelEventHandler(GuavaEventBusEndpoint eventBusEndpoint, Processor processor) { |
| ObjectHelper.notNull(eventBusEndpoint, "eventBusEndpoint"); |
| ObjectHelper.notNull(processor, "processor"); |
| |
| this.eventBusEndpoint = eventBusEndpoint; |
| this.processor = AsyncProcessorConverterHelper.convert(processor); |
| } |
| |
| /** |
| * Callback executed to propagate event from Guava listener to Camel route. |
| * |
| * @param event the event received by Guava EventBus. |
| */ |
| public void doEventReceived(Object event) { |
| log.trace("Received event: {}"); |
| final Exchange exchange = eventBusEndpoint.createExchange(event); |
| log.debug("Processing event: {}", event); |
| // use async processor to support async routing engine |
| processor.process(exchange, new AsyncCallback() { |
| @Override |
| public void done(boolean doneSync) { |
| // noop |
| } |
| }); |
| } |
| |
| } |