/*
* 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.servicemix.naming;
import java.util.Collections;
import java.lang.reflect.Proxy;
import javax.naming.NamingException;
import javax.naming.NameNotFoundException;
import org.apache.xbean.naming.context.ImmutableContext;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
/**
* The naming context used to access OSGi services
*/
public class OSGiServicesContext extends ImmutableContext {
private BundleContext bundleContext;
public OSGiServicesContext(BundleContext bundleContext) throws NamingException {
super(Collections.<String, Object>emptyMap());
this.bundleContext = bundleContext;
}
@Override
public Object lookup(String name) throws NamingException {
String[] parts = name.split("/");
if (parts.length == 0 || parts.length > 2) {
throw new NameNotFoundException("Unrecognized name, should be osgi:services:<interface>[/<filter>]");
}
String className = parts[0];
String filter = parts.length == 2 ? parts[1] : null;
try {
ClassLoader classLoader = getClass().getClassLoader();
Class clazz = classLoader.loadClass(className);
String clazzFilter = "(" + Constants.OBJECTCLASS + "=" + clazz.getName() + ")";
if (filter == null) {
filter = clazzFilter;
} else {
if (filter.startsWith("(")) {
filter = "(&" + clazzFilter + filter + ")";
} else {
filter = "(&" + clazzFilter + "(" + filter + "))";
}
}
ProxyInvocationHandler handler = new ProxyInvocationHandler(bundleContext, filter);
handler.getTarget(false);
Object instance = Proxy.newProxyInstance(classLoader, new Class[] { clazz }, handler);
return instance;
} catch (Exception e) {
NameNotFoundException ex = new NameNotFoundException(e.getMessage());
ex.initCause(e);
throw ex;
}
}
}