| /* |
| * 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.scr.impl.helper; |
| |
| import org.apache.felix.scr.impl.manager.ComponentActivator; |
| import org.apache.felix.scr.impl.manager.RegionConfigurationSupport; |
| import org.osgi.framework.ServiceReference; |
| import org.osgi.service.cm.ConfigurationAdmin; |
| import org.osgi.service.log.LogService; |
| import org.osgi.util.tracker.ServiceTracker; |
| import org.osgi.util.tracker.ServiceTrackerCustomizer; |
| |
| public class ConfigAdminTracker |
| { |
| public static final String CONFIGURATION_ADMIN = "org.osgi.service.cm.ConfigurationAdmin"; |
| |
| private final ServiceTracker<ConfigurationAdmin, RegionConfigurationSupport> configAdminTracker; |
| |
| public ConfigAdminTracker(final ComponentActivator componentActivator) |
| { |
| |
| configAdminTracker = new ServiceTracker<>( |
| componentActivator.getBundleContext(), CONFIGURATION_ADMIN, |
| new ServiceTrackerCustomizer<ConfigurationAdmin, RegionConfigurationSupport>() |
| { |
| |
| @Override |
| public RegionConfigurationSupport addingService(ServiceReference<ConfigurationAdmin> reference) |
| { |
| // let's do a quick check if the returned CA service is using the same |
| // CA API as is visible to this (SCR) bundle |
| boolean visible = false; |
| try |
| { |
| ConfigurationAdmin ca = componentActivator.getBundleContext().getService(reference); |
| if ( ca != null ) |
| { |
| visible = true; |
| componentActivator.getBundleContext().ungetService(reference); |
| } |
| } |
| catch ( final Exception ex) |
| { |
| componentActivator.getLogger().log(LogService.LOG_ERROR, |
| "Configuration admin API visible to bundle " + componentActivator.getBundleContext().getBundle() + |
| " is not the same as the Configuration Admin API visible to the SCR implementation.", ex); |
| } |
| |
| if ( !visible ) |
| { |
| return null; |
| } |
| return componentActivator.setRegionConfigurationSupport( reference ); |
| } |
| |
| @Override |
| public void modifiedService(ServiceReference<ConfigurationAdmin> reference, |
| RegionConfigurationSupport service) |
| { |
| } |
| |
| @Override |
| public void removedService(ServiceReference<ConfigurationAdmin> reference, |
| RegionConfigurationSupport rcs) |
| { |
| componentActivator.unsetRegionConfigurationSupport( rcs ); |
| } |
| } ); |
| |
| configAdminTracker.open(); |
| } |
| |
| public void dispose() |
| { |
| configAdminTracker.close(); |
| } |
| |
| } |