juddi-client/src/main/java/org/apache/juddi/v3/client/mapping/UDDIClientSubscriptionListenerImpl.java

/*
 * Copyright 2001-2008 The Apache Software Foundation.
 * 
 * Licensed 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.juddi.v3.client.mapping;

import java.io.StringWriter;

import javax.jws.WebService;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.juddi.v3.client.subscription.SubscriptionCallbackListener;
import org.uddi.api_v3.DispositionReport;
import org.uddi.api_v3.Result;
import org.uddi.subr_v3.NotifySubscriptionListener;
import org.uddi.v3_service.DispositionReportFaultMessage;
import org.uddi.v3_service.UDDISubscriptionListenerPortType;

/**
 * WebService which implements the UDDI v3 SubscriptionListener API. This service will be called by
 * the UDDI registry when any change to a Service or BindingTemplate
 * call in to it.
 * 
 * @author kstam
 * @see SubscriptionCallbackListener
 *
 */
@WebService(serviceName="UDDIClientSubscriptionListenerService", 
			endpointInterface="org.uddi.v3_service.UDDISubscriptionListenerPortType",
			targetNamespace = "urn:uddi-org:v3_service")

public class UDDIClientSubscriptionListenerImpl implements UDDISubscriptionListenerPortType {
	
	private static final Log logger = LogFactory.getLog(UDDIClientSubscriptionListenerImpl.class);
	private UDDIServiceCache serviceCache = null;

	public UDDIClientSubscriptionListenerImpl() {
		super();
	}	

	public UDDIClientSubscriptionListenerImpl(String bindingKey, UDDIServiceCache serviceCache) {
		super();
		this.serviceCache = serviceCache;
	}

	
        /**
         * The SubscriptionListener is called by the UDDI Server when there is a change to any of the
	 * services Endpoints. With every call the serviceCache is cleared.
         * @param body
         * @return success or fail
         * @throws DispositionReportFaultMessage 
         */
	public DispositionReport notifySubscriptionListener(
			NotifySubscriptionListener body)
			throws DispositionReportFaultMessage 
	{
		try {
			JAXBContext context = JAXBContext.newInstance(body.getClass());
			Marshaller marshaller = context.createMarshaller();
			StringWriter sw = new StringWriter();
			marshaller.marshal(body, sw);
			logger.info("Notification received by UDDISubscriptionListenerService : " + sw.toString());
			// reset the cache, big hammer for now, we could figure out changed from the
			// subscriptionResults, and be more selective.
			if (serviceCache!=null) serviceCache.removeAll();
			
		} catch (Exception e) {
			logger.error(e.getMessage(),e);
		}
			
		DispositionReport dr = new DispositionReport();
		Result res = new Result();
		dr.getResult().add(res);
		return dr;
	}
	
}