/*
* 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.karaf.main;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.jar.Manifest;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.karaf.main.util.BootstrapLogManager;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.launch.Framework;
public class KarafActivatorManager {
public static final String KARAF_ACTIVATOR = "Karaf-Activator";
Logger LOG = Logger.getLogger(this.getClass().getName());
private List<BundleActivator> karafActivators = new ArrayList<BundleActivator>();
private final ClassLoader classLoader;
private final Framework framework;
public KarafActivatorManager(ClassLoader classLoader, Framework framework) {
this.classLoader = classLoader;
this.framework = framework;
BootstrapLogManager.configureLogger(LOG);
}
void startKarafActivators() throws IOException {
Enumeration<URL> urls = classLoader.getResources("META-INF/MANIFEST.MF");
while (urls != null && urls.hasMoreElements()) {
URL url = urls.nextElement();
String className = null;
InputStream is = url.openStream();
try {
Manifest mf = new Manifest(is);
className = mf.getMainAttributes().getValue(KARAF_ACTIVATOR);
if (className != null) {
BundleActivator activator = (BundleActivator) classLoader.loadClass(className).newInstance();
activator.start(framework.getBundleContext());
karafActivators.add(activator);
}
} catch (Throwable e) {
if (className != null) {
System.err.println("Error starting karaf activator " + className + ": " + e.getMessage());
LOG.log(Level.WARNING, "Error starting karaf activator " + className + " from url " + url, e);
}
} finally {
if (is != null) {
try {
is.close();
} catch (IOException e) {
}
}
}
}
}
void stopKarafActivators() {
for (BundleActivator activator : karafActivators) {
try {
activator.stop(framework.getBundleContext());
} catch (Throwable e) {
LOG.log(Level.WARNING, "Error stopping karaf activator " + activator.getClass().getName(), e);
}
}
}
}