| /* |
| * 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.polygene.library.osgi; |
| |
| import java.util.ArrayList; |
| import java.util.Dictionary; |
| import java.util.Properties; |
| import org.apache.polygene.api.activation.ActivatorAdapter; |
| import org.apache.polygene.api.activation.Activators; |
| import org.apache.polygene.api.injection.scope.Service; |
| import org.apache.polygene.api.mixin.Mixins; |
| import org.apache.polygene.api.service.ServiceComposite; |
| import org.apache.polygene.api.service.ServiceReference; |
| import org.apache.polygene.api.service.qualifier.HasMetaInfo; |
| import org.apache.polygene.api.util.Classes; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.ServiceRegistration; |
| |
| import static org.apache.polygene.api.util.Classes.interfacesOf; |
| |
| /** |
| * Export Polygene services to an OSGi Bundle. |
| */ |
| @Mixins( OSGiServiceExporter.OSGiServiceExporterMixin.class ) |
| @Activators( OSGiServiceExporter.Activator.class ) |
| public interface OSGiServiceExporter |
| { |
| void registerServices() |
| throws Exception; |
| |
| void unregisterServices() |
| throws Exception; |
| |
| class Activator |
| extends ActivatorAdapter<ServiceReference<OSGiServiceExporter>> |
| { |
| |
| @Override |
| public void afterActivation( ServiceReference<OSGiServiceExporter> activated ) |
| throws Exception |
| { |
| activated.get().registerServices(); |
| } |
| |
| @Override |
| public void beforePassivation( ServiceReference<OSGiServiceExporter> passivating ) |
| throws Exception |
| { |
| passivating.get().unregisterServices(); |
| } |
| |
| } |
| |
| abstract class OSGiServiceExporterMixin |
| implements OSGiServiceExporter |
| { |
| |
| @Service |
| @HasMetaInfo( BundleContext.class ) |
| private Iterable<ServiceReference<ServiceComposite>> services; |
| private ArrayList<ServiceRegistration> registrations = new ArrayList<>(); |
| |
| @Override |
| public void registerServices() |
| throws Exception |
| { |
| for( ServiceReference<ServiceComposite> ref : services ) |
| { |
| Class<? extends BundleContext> type = BundleContext.class; |
| BundleContext context = ref.metaInfo( type ); |
| ServiceComposite service = ref.get(); |
| Dictionary properties = ref.metaInfo( Dictionary.class ); |
| if( properties == null ) |
| { |
| properties = new Properties(); |
| } |
| properties.put( "org.apache.polygene.api.service.active", ref.isActive() ); |
| properties.put( "org.apache.polygene.api.service.available", ref.isAvailable() ); |
| properties.put( "org.apache.polygene.api.service.reference", ref.identity() ); |
| |
| |
| String[] interfaceNames = interfacesOf( service.getClass() ) |
| .map( Classes.RAW_CLASS ).toArray( String[]::new ); |
| |
| registrations.add( context.registerService( interfaceNames, service, properties ) ); |
| } |
| } |
| |
| @Override |
| public void unregisterServices() |
| throws Exception |
| { |
| for( ServiceRegistration reg : registrations ) |
| { |
| reg.unregister(); |
| } |
| } |
| |
| } |
| |
| } |