/**
    * Copyright 2005-2012 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.rice.ksb.messaging.exceptionhandling;
  
  import javax.xml.namespace.QName;
  
  import org.apache.commons.lang.StringUtils;
  import org.apache.log4j.Logger;
  import org.kuali.rice.core.api.exception.RiceRuntimeException;
  import org.kuali.rice.core.api.reflect.ObjectDefinition;
  import org.kuali.rice.core.api.resourceloader.GlobalResourceLoader;
  import org.kuali.rice.ksb.api.KsbApiServiceLocator;
  import org.kuali.rice.ksb.api.bus.Endpoint;
  import org.kuali.rice.ksb.api.bus.ServiceBus;
  import org.kuali.rice.ksb.api.messaging.AsynchronousCall;
  import org.kuali.rice.ksb.messaging.PersistedMessageBO;
  import org.kuali.rice.ksb.messaging.quartz.MessageServiceExecutorJob;
  import org.kuali.rice.ksb.messaging.quartz.MessageServiceExecutorJobListener;
  import org.kuali.rice.ksb.service.KSBServiceLocator;
  import org.quartz.JobDataMap;
  import org.quartz.JobDetail;
  import org.quartz.Scheduler;
  import org.quartz.SimpleTrigger;
  import org.quartz.Trigger;
  
  
  /**
   * Default implementation of {@link ExceptionRoutingService}.  Just saves 
   * the message in the queue as is, which should be marked Exception by the 
   * {@link MessageExceptionHandler}.
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   *
   */
  public class DefaultExceptionServiceImpl implements ExceptionRoutingService {
  	
  	private static final Logger LOG = Logger.getLogger(DefaultExceptionServiceImpl.class);
  
  	public void placeInExceptionRouting(Throwable throwable, PersistedMessageBO message, Object service) throws Exception {
  		LOG.error("Exception caught processing message " + message.getRouteQueueId() + " " + message.getServiceName() + ": " + throwable);
  		
  		
  		AsynchronousCall methodCall = null;
  		if (message.getMethodCall() != null) {
  			methodCall = message.getMethodCall();
  		} else {
  			methodCall = message.getPayload().getMethodCall();
  		}
  		message.setMethodCall(methodCall);
  		MessageExceptionHandler exceptionHandler = getMessageExceptionHandler(methodCall.getServiceConfiguration().getServiceName());
  		exceptionHandler.handleException(throwable, message, service);
  	}
  	
  	public void placeInExceptionRoutingLastDitchEffort(Throwable throwable, PersistedMessageBO message, Object service) throws Exception {
  		LOG.error("Exception caught processing message " + message.getRouteQueueId() + " " + message.getServiceName() + ": " + throwable);
  		
  		AsynchronousCall methodCall = null;
  		if (message.getMethodCall() != null) {
  			methodCall = message.getMethodCall();
  		} else {
  			methodCall = message.getPayload().getMethodCall();
  		}
  		message.setMethodCall(methodCall);
  		MessageExceptionHandler exceptionHandler = getMessageExceptionHandler(methodCall.getServiceConfiguration().getServiceName());
  		exceptionHandler.handleExceptionLastDitchEffort(throwable, message, service);
  	}
  	
  	protected MessageExceptionHandler getMessageExceptionHandler(QName serviceName) {
  		ServiceBus serviceBus = KsbApiServiceLocator.getServiceBus();
  		Endpoint endpoint = serviceBus.getEndpoint(serviceName);
  		if (endpoint == null) {
  			throw new RiceRuntimeException("No services found for name " + serviceName);
  		}
  		String messageExceptionHandlerName = endpoint.getServiceConfiguration().getMessageExceptionHandler();
  		if (messageExceptionHandlerName == null) {
  			messageExceptionHandlerName = DefaultMessageExceptionHandler.class.getName();
  		}
  		return (MessageExceptionHandler) GlobalResourceLoader.getObject(new ObjectDefinition(messageExceptionHandlerName));
  	}
  	
  	
  
  	public void scheduleExecution(Throwable throwable, PersistedMessageBO message, String description) throws Exception {
  		KSBServiceLocator.getMessageQueueService().delete(message);
  		Scheduler scheduler = KSBServiceLocator.getScheduler();
  		JobDataMap jobData = new JobDataMap();
 		jobData.put(MessageServiceExecutorJob.MESSAGE_KEY, message);
 		JobDetail jobDetail = new JobDetail("Exception_Message_Job " + Math.random(), "Exception Messaging",
 			MessageServiceExecutorJob.class);
 		jobDetail.setJobDataMap(jobData);
 		if (!StringUtils.isBlank(description)) {
 		    jobDetail.setDescription(description);
 		}
 		jobDetail.addJobListener(MessageServiceExecutorJobListener.NAME);
 		Trigger trigger = new SimpleTrigger("Exception_Message_Trigger " + Math.random(), "Exception Messaging", message
 			.getQueueDate());
 		trigger.setJobDataMap(jobData);// 1.6 bug required or derby will choke
 		scheduler.scheduleJob(jobDetail, trigger);    
 	}
 		
 }