/*
* 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.diagnostic.internal;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;
import org.apache.karaf.diagnostic.core.DumpProvider;
import org.apache.karaf.diagnostic.management.internal.DiagnosticDumpMBeanImpl;
import org.apache.karaf.diagnostic.common.FeaturesDumpProvider;
import org.apache.karaf.diagnostic.common.LogDumpProvider;
import org.apache.karaf.features.FeaturesService;
import org.apache.karaf.features.internal.model.Features;
import org.apache.karaf.util.tracker.SingleServiceTracker;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceRegistration;
import org.osgi.util.tracker.ServiceTracker;
public class Activator implements BundleActivator {
private List<ServiceRegistration<DumpProvider>> registrations;
private ServiceRegistration<DumpProvider> featuresProviderRegistration;
private ServiceRegistration mbeanRegistration;
private SingleServiceTracker<FeaturesService> featuresServiceTracker;
private ServiceTracker<DumpProvider, DumpProvider> providersTracker;
@Override
public void start(final BundleContext context) throws Exception {
registrations = new ArrayList<ServiceRegistration<DumpProvider>>();
registrations.add(context.registerService(DumpProvider.class, new LogDumpProvider(context), null));
featuresServiceTracker = new SingleServiceTracker<FeaturesService>(context, FeaturesService.class, (oldFs, newFs) -> {
if (featuresProviderRegistration != null) {
featuresProviderRegistration.unregister();
featuresProviderRegistration = null;
}
if (newFs != null) {
featuresProviderRegistration = context.registerService(
DumpProvider.class,
new FeaturesDumpProvider(newFs),
null);
}
});
featuresServiceTracker.open();
final DiagnosticDumpMBeanImpl diagnostic = new DiagnosticDumpMBeanImpl();
diagnostic.setBundleContext(context);
Hashtable<String, Object> props = new Hashtable<String, Object>();
props.put("jmx.objectname", "org.apache.karaf:type=diagnostic,name=" + System.getProperty("karaf.name"));
mbeanRegistration = context.registerService(
getInterfaceNames(diagnostic),
diagnostic,
props
);
}
@Override
public void stop(BundleContext context) throws Exception {
mbeanRegistration.unregister();
featuresServiceTracker.close();
for (ServiceRegistration<DumpProvider> reg : registrations) {
reg.unregister();
}
}
private String[] getInterfaceNames(Object object) {
List<String> names = new ArrayList<String>();
for (Class cl = object.getClass(); cl != Object.class; cl = cl.getSuperclass()) {
addSuperInterfaces(names, cl);
}
return names.toArray(new String[names.size()]);
}
private void addSuperInterfaces(List<String> names, Class clazz) {
for (Class cl : clazz.getInterfaces()) {
names.add(cl.getName());
addSuperInterfaces(names, cl);
}
}
}