/* | |
* 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.felix.webconsole.plugins.ds.internal; | |
import java.util.Dictionary; | |
import java.util.Hashtable; | |
import org.apache.felix.inventory.Format; | |
import org.apache.felix.inventory.InventoryPrinter; | |
import org.apache.felix.webconsole.SimpleWebConsolePlugin; | |
import org.apache.felix.webconsole.bundleinfo.BundleInfoProvider; | |
import org.osgi.framework.BundleActivator; | |
import org.osgi.framework.BundleContext; | |
import org.osgi.framework.ServiceReference; | |
import org.osgi.framework.ServiceRegistration; | |
import org.osgi.service.component.runtime.ServiceComponentRuntime; | |
import org.osgi.util.tracker.ServiceTracker; | |
import org.osgi.util.tracker.ServiceTrackerCustomizer; | |
/** | |
* Activator is the main starting class. | |
*/ | |
public class Activator implements BundleActivator, ServiceTrackerCustomizer<ServiceComponentRuntime, ServiceComponentRuntime> | |
{ | |
private ServiceTracker<ServiceComponentRuntime, ServiceComponentRuntime> tracker; | |
private BundleContext context; | |
private SimpleWebConsolePlugin plugin; | |
private ServiceRegistration<InventoryPrinter> printerRegistration; | |
private ServiceRegistration<BundleInfoProvider> infoRegistration; | |
/** | |
* @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext) | |
*/ | |
@SuppressWarnings({ "unchecked", "rawtypes" }) | |
public final void start(BundleContext context) throws Exception | |
{ | |
this.context = context; | |
this.tracker = new ServiceTracker(context, ServiceComponentRuntime.class, this); | |
this.tracker.open(); | |
} | |
/** | |
* @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext) | |
*/ | |
public final void stop(BundleContext context) throws Exception | |
{ | |
if (tracker != null) | |
{ | |
tracker.close(); | |
tracker = null; | |
} | |
} | |
// - begin tracker | |
/** | |
* @see org.osgi.util.tracker.ServiceTrackerCustomizer#modifiedService(org.osgi.framework.ServiceReference, | |
* java.lang.Object) | |
*/ | |
public final void modifiedService(final ServiceReference<ServiceComponentRuntime> reference, final ServiceComponentRuntime service) | |
{/* unused */ | |
} | |
/** | |
* @see org.osgi.util.tracker.ServiceTrackerCustomizer#addingService(org.osgi.framework.ServiceReference) | |
*/ | |
public final ServiceComponentRuntime addingService(final ServiceReference<ServiceComponentRuntime> reference) | |
{ | |
SimpleWebConsolePlugin plugin = this.plugin; | |
if (plugin == null) | |
{ | |
final ServiceComponentRuntime service = context.getService(reference); | |
this.plugin = plugin = new WebConsolePlugin(service).register(context); | |
final Dictionary<String, Object> props = new Hashtable<String, Object>(); | |
final String name = "Declarative Services Components"; | |
props.put(InventoryPrinter.NAME, "scr"); //$NON-NLS-1$ | |
props.put(InventoryPrinter.TITLE, name); | |
props.put(InventoryPrinter.FORMAT, new String[] { | |
Format.TEXT.toString(), | |
Format.JSON.toString() | |
}); | |
printerRegistration = context.registerService(InventoryPrinter.class, | |
new ComponentConfigurationPrinter(service, (WebConsolePlugin) plugin), | |
props); | |
infoRegistration = new InfoProvider(context.getBundle(), service).register(context); | |
} | |
return context.getService(reference); | |
} | |
/** | |
* @see org.osgi.util.tracker.ServiceTrackerCustomizer#removedService(org.osgi.framework.ServiceReference, | |
* java.lang.Object) | |
*/ | |
public final void removedService(final ServiceReference<ServiceComponentRuntime> reference, final ServiceComponentRuntime service) | |
{ | |
SimpleWebConsolePlugin plugin = this.plugin; | |
if (tracker.getTrackingCount() == 0 && plugin != null) | |
{ | |
// remove service | |
plugin.unregister(); | |
this.plugin = null; | |
// unregister configuration printer too | |
ServiceRegistration<?> reg = printerRegistration; | |
if (reg != null) | |
{ | |
reg.unregister(); | |
printerRegistration = null; | |
} | |
// unregister info provider too | |
reg = infoRegistration; | |
if (reg != null) | |
{ | |
reg.unregister(); | |
infoRegistration = null; | |
} | |
} | |
} | |
} |