| /* |
| * 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.shell.commands.info; |
| |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.BundleEvent; |
| import org.osgi.framework.ServiceRegistration; |
| import org.osgi.util.tracker.BundleTrackerCustomizer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.Dictionary; |
| import java.util.Properties; |
| import java.util.StringTokenizer; |
| |
| /** |
| * Bundle tracker which check manifest headers for information. |
| */ |
| public class InfoBundleTrackerCustomizer implements BundleTrackerCustomizer { |
| |
| /** |
| * Logger. |
| */ |
| private Logger logger = LoggerFactory.getLogger(InfoBundleTrackerCustomizer.class); |
| |
| /** |
| * Bundle context. |
| */ |
| private final BundleContext context; |
| |
| public InfoBundleTrackerCustomizer(BundleContext context) { |
| this.context = context; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @SuppressWarnings("unchecked") |
| public Object addingBundle(Bundle bundle, BundleEvent event) { |
| Dictionary headers = bundle.getHeaders(); |
| String headerEntry = (String) headers.get("Karaf-Info"); |
| |
| InfoProvider provider = createInfo(headerEntry); |
| if (provider == null) { |
| if (logger.isDebugEnabled()) { |
| logger.debug("Ignore incorrect info {} provided by bundle {}", |
| headerEntry, bundle.getSymbolicName()); |
| } |
| return null; |
| } |
| return bundle.getBundleContext().registerService(InfoProvider.class.getName(), |
| provider, null); |
| } |
| |
| public void modifiedBundle(Bundle bundle, BundleEvent event, Object object) { |
| } |
| |
| public void removedBundle(Bundle bundle, BundleEvent event, Object object) { |
| if (object instanceof ServiceRegistration) { |
| ServiceRegistration service = (ServiceRegistration) object; |
| service.unregister(); |
| } |
| } |
| |
| private InfoProvider createInfo(String entry) { |
| if (entry == null) { |
| return null; |
| } |
| |
| StringTokenizer tokenizer = new StringTokenizer(entry, ";="); |
| if (tokenizer.countTokens() < 3) { |
| return null; |
| } |
| |
| String name = tokenizer.nextToken(); |
| Properties properties = new Properties(); |
| |
| do { |
| String property = tokenizer.nextToken(); |
| if (tokenizer.hasMoreTokens()) { |
| properties.put(property, tokenizer.nextElement()); |
| } else { |
| if (logger.isDebugEnabled()) { |
| logger.debug("Ignore property {} without value", property); |
| } |
| } |
| } while (tokenizer.hasMoreTokens()); |
| |
| return new PojoInfoProvider(name, properties); |
| } |
| |
| } |