001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 package org.apache.geronimo.osgi.registry; 020 021 import org.osgi.framework.Bundle; 022 import org.osgi.framework.BundleEvent; 023 import org.osgi.framework.ServiceRegistration; 024 import org.osgi.service.log.LogService; 025 import org.osgi.util.tracker.BundleTrackerCustomizer; 026 027 public class ProviderBundleTrackerCustomizer implements BundleTrackerCustomizer { 028 // our base Activator (used as a service source) 029 private Activator activator; 030 // the bundle hosting this registry 031 private Bundle registryBundle; 032 // the registry we interact with 033 private ProviderRegistryImpl registry; 034 035 public ProviderBundleTrackerCustomizer(Activator a, Bundle b, ProviderRegistryImpl r) { 036 activator = a; 037 registryBundle = b; 038 registry = r; 039 } 040 041 /** 042 * Handle the activation of a new bundle. 043 * 044 * @param bundle The source bundle. 045 * @param event The bundle event information. 046 * 047 * @return A return object. 048 */ 049 @Override 050 public Object addingBundle(Bundle bundle, BundleEvent event) { 051 log(LogService.LOG_DEBUG, "Bundle Considered for class providers: " + bundle.getSymbolicName()); 052 if (bundle.equals(registryBundle)) { 053 return null; 054 } 055 056 return registry.addBundle(bundle); 057 } 058 059 @Override 060 public void modifiedBundle(Bundle bundle, BundleEvent event, Object object) { 061 // nothing to do here 062 } 063 064 @Override 065 public void removedBundle(Bundle bundle, BundleEvent event, Object object) { 066 // have the registry process this 067 registry.removeBundle(bundle, object); 068 } 069 070 private void log(int level, String message) { 071 activator.log(level, message); 072 } 073 074 private void log(int level, String message, Throwable th) { 075 activator.log(level, message, th); 076 } 077 }