/**
* 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.cxf.ws.eventing.backend.notification;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Logger;
import javax.jws.WebService;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.namespace.QName;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.interceptor.LoggingOutInterceptor;
import org.apache.cxf.jaxws.JaxWsProxyFactoryBean;
import org.apache.cxf.ws.eventing.EventType;
import org.apache.cxf.ws.eventing.backend.database.SubscriptionTicket;
import org.apache.cxf.ws.eventing.shared.handlers.ReferenceParametersAddingHandler;
/**
* Represents the task to send a notification about a particular event to a particular subscribed client.
* Dispatch is performed according to a provided endpoint interface.
*/
class EventSinkInterfaceNotificationTask implements Runnable {
protected static final Logger LOG = LogUtils.getLogger(EventSinkInterfaceNotificationTask.class);
SubscriptionTicket target;
Object event;
Class<?> endpointInterface;
public EventSinkInterfaceNotificationTask(SubscriptionTicket ticket, Object event, Class<?> endpointInterface) {
this.target = ticket;
this.event = event;
this.endpointInterface = endpointInterface;
}
/**
* Logic needed to actually send the notification to the subscribed client.
*/
@Override
public void run() {
try {
LOG.info("Starting notification task for subscription UUID " + target.getUuid());
Method method = null;
final Object proxy;
final Object param;
final Class<?> eventClass = event.getClass();
final Class<?>[] eventClassArray = new Class<?>[] {eventClass};
if (target.isWrappedDelivery()) {
proxy = getProxy(WrappedSink.class, eventClassArray);
param = new EventType();
((EventType)param).getContent().add(eventClass.isAnnotationPresent(XmlRootElement.class)
? event : convertToJAXBElement(event));
method = WrappedSink.class.getMethod("notifyEvent", EventType.class);
} else {
proxy = getProxy(endpointInterface);
// find the method to use
Method[] methods = endpointInterface.getMethods();
for (int i = 0; i < methods.length && method == null; i++) {
if (Arrays.equals(methods[i].getParameterTypes(), eventClassArray)) {
method = methods[i];
}
}
if (method == null) {
LOG.severe("Couldn't find corresponding method for event of type "
+ eventClass.getCanonicalName() + " in event sink interface"
+ endpointInterface.getCanonicalName());
return;
}
param = event;
}
method.invoke(proxy, param);
} catch (Throwable e) {
e.printStackTrace();
}
}
@SuppressWarnings({
"unchecked", "rawtypes"
})
protected JAXBElement<?> convertToJAXBElement(Object evt) {
final Class<?> eventClass = evt.getClass();
String tns = endpointInterface.getAnnotation(WebService.class).targetNamespace();
return new JAXBElement(new QName(tns, eventClass.getName()), eventClass, evt);
}
protected Object getProxy(Class<?> sinkInterface, Class<?>... extraClasses) {
//needed SOAP handlers
ReferenceParametersAddingHandler handler = new
ReferenceParametersAddingHandler(
target.getNotificationReferenceParams());
JaxWsProxyFactoryBean service = new JaxWsProxyFactoryBean();
service.getOutInterceptors().add(new LoggingOutInterceptor());
service.setServiceClass(sinkInterface);
service.setAddress(target.getTargetURL());
service.getHandlers().add(handler);
// do we need to apply a filter?
if (target.getFilter() != null && target.getFilter().getContent().size() > 0) {
service.getOutInterceptors().add(new FilteringInterceptor(target.getFilter()));
}
if (extraClasses != null && extraClasses.length > 0) {
Map<String, Object> props = new HashMap<String, Object>();
props.put("jaxb.additionalContextClasses", extraClasses);
service.getClientFactoryBean().getServiceFactory().setProperties(props);
}
return service.create();
}
}