| /** |
| * 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.impl; |
| |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.camel.Consumer; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Route; |
| import org.apache.camel.spi.ExceptionHandler; |
| import org.apache.camel.spi.RoutePolicy; |
| import org.apache.camel.util.ServiceHelper; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * A base class for developing custom {@link RoutePolicy} implementations. |
| * |
| * @version |
| */ |
| public abstract class RoutePolicySupport extends ServiceSupport implements RoutePolicy { |
| |
| protected final transient Logger log = LoggerFactory.getLogger(getClass()); |
| private ExceptionHandler exceptionHandler; |
| |
| public void onInit(Route route) { |
| // noop |
| } |
| |
| public void onExchangeBegin(Route route, Exchange exchange) { |
| // noop |
| } |
| |
| public void onExchangeDone(Route route, Exchange exchange) { |
| // noop |
| } |
| |
| protected boolean startConsumer(Consumer consumer) throws Exception { |
| boolean resumed = ServiceHelper.resumeService(consumer); |
| if (resumed) { |
| log.debug("Resuming consumer {}", consumer); |
| } |
| return resumed; |
| } |
| |
| protected boolean stopConsumer(Consumer consumer) throws Exception { |
| boolean suspended = ServiceHelper.suspendService(consumer); |
| if (suspended) { |
| log.debug("Suspended consumer {}", consumer); |
| } |
| return suspended; |
| } |
| |
| protected void startRoute(Route route) throws Exception { |
| route.getRouteContext().getCamelContext().startRoute(route.getId()); |
| } |
| |
| protected void stopRoute(Route route) throws Exception { |
| route.getRouteContext().getCamelContext().stopRoute(route.getId()); |
| } |
| |
| protected void stopRoute(Route route, long timeout, TimeUnit timeUnit) throws Exception { |
| route.getRouteContext().getCamelContext().stopRoute(route.getId(), timeout, timeUnit); |
| } |
| |
| /** |
| * Handles the given exception using the {@link #getExceptionHandler()} |
| * |
| * @param t the exception to handle |
| */ |
| protected void handleException(Throwable t) { |
| getExceptionHandler().handleException(t); |
| } |
| |
| @Override |
| protected void doStart() throws Exception { |
| // noop |
| } |
| |
| @Override |
| protected void doStop() throws Exception { |
| // noop |
| } |
| |
| public ExceptionHandler getExceptionHandler() { |
| if (exceptionHandler == null) { |
| exceptionHandler = new LoggingExceptionHandler(getClass()); |
| } |
| return exceptionHandler; |
| } |
| |
| public void setExceptionHandler(ExceptionHandler exceptionHandler) { |
| this.exceptionHandler = exceptionHandler; |
| } |
| |
| } |