/**
* 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.jca.cxf.handlers;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.net.URL;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;
import java.util.TreeMap;
import java.util.logging.Logger;
import javax.security.auth.Subject;
import org.apache.cxf.Bus;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.jca.core.resourceadapter.ResourceAdapterInternalException;
import org.apache.cxf.jca.cxf.CXFInvocationHandler;
import org.apache.cxf.jca.cxf.CXFInvocationHandlerData;
import org.apache.cxf.jca.cxf.CXFManagedConnection;
public class InvocationHandlerFactory {
public static final String JCA_HANDLERS_RESOURCE = "META-INF/cxf-jca-handlers.properties";
private static final Logger LOG = LogUtils.getL7dLogger(InvocationHandlerFactory.class);
final Class<?>[] handlerChainTypes;
private final Bus bus;
private final CXFManagedConnection managedConnection;
public InvocationHandlerFactory(Bus b, CXFManagedConnection connection)
throws ResourceAdapterInternalException {
this.bus = b;
this.managedConnection = connection;
try {
handlerChainTypes = getHandlerChainDefinition();
} catch (Exception ex) {
ResourceAdapterInternalException raie = new ResourceAdapterInternalException(
"unable to load handler chain definition",
ex);
LOG.warning(ex.getMessage());
throw raie;
}
}
public CXFInvocationHandler createHandlers(Object target, Subject subject)
throws ResourceAdapterInternalException {
CXFInvocationHandler first = null;
CXFInvocationHandler last = null;
// Create data member
CXFInvocationHandlerData data = new CXFInvocationHandlerDataImpl();
data.setBus(bus);
data.setManagedConnection(managedConnection);
data.setSubject(subject);
data.setTarget(target);
for (int i = 0; i < handlerChainTypes.length; i++) {
CXFInvocationHandler newHandler;
try {
Constructor<?> newHandlerConstructor = handlerChainTypes[i]
.getDeclaredConstructor(new Class[] {CXFInvocationHandlerData.class});
newHandler = (CXFInvocationHandler)newHandlerConstructor.newInstance(new Object[] {data});
} catch (Exception ex) {
ResourceAdapterInternalException raie = new ResourceAdapterInternalException(
"error creating InvocationHandler: "
+ handlerChainTypes[i],
ex);
LOG.warning(raie.getMessage());
throw raie;
}
if (last != null) {
last.setNext(newHandler);
last = newHandler;
} else {
first = newHandler;
last = newHandler;
}
}
return first;
}
private Class<?>[] getHandlerChainDefinition() throws IOException, ClassNotFoundException {
Map<Long, String> handlersMap = new TreeMap<Long, String>();
Enumeration<URL> urls = Thread.currentThread().getContextClassLoader().
getResources(JCA_HANDLERS_RESOURCE);
while (urls.hasMoreElements()) {
URL url = urls.nextElement();
loadProperties(handlersMap, url);
}
Class<?>[] handlers = new Class[handlersMap.size()];
String[] handlerClasses = new String[handlersMap.size()];
handlersMap.values().toArray(handlerClasses);
for (int i = 0; i < handlerClasses.length; i++) {
LOG.fine("reading handler class: " + handlerClasses[i]);
handlers[i] = getClass().getClassLoader().loadClass(handlerClasses[i]);
}
return handlers;
}
private void loadProperties(Map<Long, String> handlersMap, URL url) throws IOException {
Properties p = new Properties();
p.load(url.openStream());
Iterator<Object> keys = p.keySet().iterator();
while (keys.hasNext()) {
String key = (String)keys.next();
handlersMap.put(Long.valueOf(key), p.getProperty(key));
}
}
}