| /* |
| * 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.jcr; |
| |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import javax.jcr.observation.Event; |
| import javax.jcr.observation.EventIterator; |
| import javax.jcr.observation.EventListener; |
| |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Processor; |
| import org.apache.camel.RuntimeCamelException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import static org.apache.camel.RuntimeCamelException.wrapRuntimeCamelException; |
| |
| /** |
| * A JCR {@link EventListener} which can be used to delegate processing to a |
| * Camel endpoint. |
| */ |
| public class EndpointEventListener implements EventListener { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(EndpointEventListener.class); |
| |
| private final JcrEndpoint endpoint; |
| private final Processor processor; |
| |
| public EndpointEventListener(JcrEndpoint endpoint, Processor processor) { |
| this.endpoint = endpoint; |
| this.processor = processor; |
| } |
| |
| @Override |
| public void onEvent(EventIterator events) { |
| LOG.trace("onEvent START"); |
| LOG.debug("{} consumer received JCR events: {}", endpoint, events); |
| RuntimeCamelException rce = null; |
| |
| try { |
| final Exchange exchange = createExchange(events); |
| |
| try { |
| LOG.debug("Processor, {}, is processing exchange, {}", processor, exchange); |
| processor.process(exchange); |
| } catch (Exception e) { |
| exchange.setException(e); |
| } |
| |
| rce = exchange.getException(RuntimeCamelException.class); |
| } catch (Exception e) { |
| rce = wrapRuntimeCamelException(e); |
| } |
| |
| if (rce != null) { |
| LOG.trace("onEvent END throwing exception: {}", rce.toString()); |
| throw rce; |
| } |
| |
| LOG.trace("onEvent END"); |
| } |
| |
| private Exchange createExchange(EventIterator events) { |
| Exchange exchange = endpoint.createExchange(); |
| |
| List<Event> eventList = new LinkedList<>(); |
| if (events != null) { |
| while (events.hasNext()) { |
| eventList.add(events.nextEvent()); |
| } |
| } |
| exchange.getIn().setBody(eventList); |
| |
| return exchange; |
| } |
| |
| } |