/*
    * Copyright 2007 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.service.impl;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import javax.xml.namespace.QName;
  
  import org.kuali.rice.core.config.ConfigContext;
  import org.kuali.rice.core.exception.RiceRuntimeException;
  import org.kuali.rice.core.util.DataAccessUtils;
  import org.kuali.rice.kns.util.ObjectUtils;
  import org.kuali.rice.ksb.messaging.FlattenedServiceDefinition;
  import org.kuali.rice.ksb.messaging.ServiceInfo;
  import org.kuali.rice.ksb.messaging.dao.ServiceInfoDAO;
  import org.kuali.rice.ksb.messaging.service.ServiceRegistry;
  import org.kuali.rice.ksb.service.KSBContextServiceLocator;
  import org.kuali.rice.ksb.service.KSBServiceLocator;
  
  
  public class ServiceRegistryImpl implements ServiceRegistry {
  
  	private ServiceInfoDAO dao;
  	protected KSBContextServiceLocator serviceLocator;
  	
  	/**
  	 * @return the serviceLocator
  	 */
  	public KSBContextServiceLocator getServiceLocator() {
  		return this.serviceLocator;
  	}
  
  	/**
  	 * @param serviceLocator the serviceLocator to set
  	 */
  	public void setServiceLocator(KSBContextServiceLocator serviceLocator) {
  		this.serviceLocator = serviceLocator;
  	}
  
  	public void saveEntry(ServiceInfo entry) {
  		try {
  			if (ObjectUtils.isNull(entry.getSerializedServiceNamespace())) {
  				entry.setSerializedServiceNamespace(new FlattenedServiceDefinition(serviceLocator==null ?
  						KSBServiceLocator.getMessageHelper().serializeObject(entry.getServiceDefinition()) :
  								serviceLocator.getMessageHelper().serializeObject(entry.getServiceDefinition())));
  			} else {
  				entry.getSerializedServiceNamespace().setFlattenedServiceDefinitionData(serviceLocator==null ?
  						KSBServiceLocator.getMessageHelper().serializeObject(entry.getServiceDefinition()) :
  								serviceLocator.getMessageHelper().serializeObject(entry.getServiceDefinition()));
  			}
  		} catch (Exception e) {
  			throw new RiceRuntimeException(e);
  		}
  		getDao().addEntry(entry);
  	}
  
  	public List<ServiceInfo> fetchAll() {
  		return getDao().fetchAll();
  	}
  
  	public List<ServiceInfo> fetchAllActive() {
  	    return dao.fetchAllActive();
  	}
  
  	public List<ServiceInfo> fetchActiveByNameLocalPart(String localPart) {
  		return getDao().fetchActiveByNameLocalPart(localPart);
  	}
  	
  	public List<ServiceInfo> fetchActiveByName(QName serviceName) {
  		return getDao().fetchActiveByName(serviceName);		
  	}
  	
  	public List<ServiceInfo> fetchActiveByNamespace(String serviceNamespace) {
  		return getDao().fetchActiveByNamespace(serviceNamespace);
  	}
  	
  	public List<ServiceInfo> findLocallyPublishedServices(String ipNumber, String serviceNamespace) {
  		if (ConfigContext.getCurrentContextConfig().getDevMode()) {
  			return new ArrayList<ServiceInfo>();
  		}
  		return getDao().findLocallyPublishedServices(ipNumber, serviceNamespace);
  	}
  
  	public void removeEntry(ServiceInfo entry) {
  		getDao().removeEntry(entry);
 	}
 
 	public void removeLocallyPublishedServices(String ipNumber, String serviceNamespace) {
 		getDao().removeLocallyPublishedServices(ipNumber, serviceNamespace);
 	}
 
 	public ServiceInfoDAO getDao() {
 		return this.dao;
 	}
 
 	public void setDao(ServiceInfoDAO dao) {
 		this.dao = dao;
 	}
 
 	public void removeEntries(List<ServiceInfo> serviceEntries) {
 		for (ServiceInfo info : serviceEntries) {
 			removeEntry(info);
 		}
 	}
 
 	public void saveEntries(List<ServiceInfo> serviceEntries) {
 		for (ServiceInfo info : serviceEntries) {
 			saveEntry(info);
 		}
 	}
 
 	public void markServicesDead(List<ServiceInfo> serviceEntries) {
 		for (ServiceInfo info : serviceEntries) {
 			// there is contention on these records from multiple nodes and odds
 			// are the
 			// one we have in memory is stale. refetch and mork dead.
 			ServiceInfo currentInfo = getDao().findServiceInfo(info.getMessageEntryId());
 			currentInfo.setAlive(false);
 			try {
 				saveEntry(currentInfo);
 			} catch (Exception e) {
 				boolean isOptimisticLockExp = DataAccessUtils.isOptimisticLockFailure(e);
 				// suppress optimistic lock exceptions, it's collision with
 				// other nodes
 				if (!isOptimisticLockExp) {
 					throw (RuntimeException) e;
 				}
 			}
 
 		}
 	}
 
 	public FlattenedServiceDefinition getFlattenedServiceDefinition(Long flattenedServiceDefinitionId) {
 		return getDao().findFlattenedServiceDefinition(flattenedServiceDefinitionId);
 	}
 }