| /* |
| * 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.bundlerepository.impl; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.felix.utils.log.Logger; |
| import org.osgi.framework.AllServiceListener; |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.BundleEvent; |
| import org.osgi.framework.ServiceEvent; |
| import org.osgi.framework.SynchronousBundleListener; |
| import org.apache.felix.bundlerepository.*; |
| |
| public class LocalRepositoryImpl implements Repository, SynchronousBundleListener, AllServiceListener |
| { |
| private final BundleContext m_context; |
| private final Logger m_logger; |
| private long m_snapshotTimeStamp = 0; |
| private Map<Long, Resource> m_localResourceList = new HashMap<Long, Resource>(); |
| |
| public LocalRepositoryImpl(BundleContext context, Logger logger) |
| { |
| m_context = context; |
| m_logger = logger; |
| initialize(); |
| } |
| |
| public void bundleChanged(BundleEvent event) |
| { |
| if (event.getType() == BundleEvent.INSTALLED || event.getType() == BundleEvent.UPDATED) |
| { |
| synchronized (this) |
| { |
| addBundle(event.getBundle()); |
| m_snapshotTimeStamp = System.currentTimeMillis(); |
| } |
| } |
| else if (event.getType() == BundleEvent.UNINSTALLED) |
| { |
| synchronized (this) |
| { |
| removeBundle(event.getBundle()); |
| m_snapshotTimeStamp = System.currentTimeMillis(); |
| } |
| } |
| } |
| |
| public void serviceChanged(ServiceEvent event) |
| { |
| Bundle bundle = event.getServiceReference().getBundle(); |
| if ((bundle != null) |
| && (bundle.getState() == Bundle.ACTIVE && event.getType() != ServiceEvent.MODIFIED)) |
| { |
| synchronized (this) |
| { |
| removeBundle(bundle); |
| addBundle(bundle); |
| m_snapshotTimeStamp = System.currentTimeMillis(); |
| } |
| } |
| } |
| |
| private void addBundle(Bundle bundle) |
| { |
| /* |
| * Concurrency note: This method MUST be called in a context which |
| * is synchronized on this instance to prevent data structure |
| * corruption. |
| */ |
| |
| // Ignore system bundle |
| if (bundle.getBundleId() == 0) |
| { |
| return; |
| } |
| m_localResourceList.put(bundle.getBundleId(), new LazyLocalResourceImpl(bundle, m_logger)); |
| } |
| |
| private void removeBundle(Bundle bundle) |
| { |
| /* |
| * Concurrency note: This method MUST be called in a context which |
| * is synchronized on this instance to prevent data structure |
| * corruption. |
| */ |
| |
| m_localResourceList.remove(bundle.getBundleId()); |
| } |
| |
| public void dispose() |
| { |
| m_context.removeBundleListener(this); |
| m_context.removeServiceListener(this); |
| } |
| |
| public String getURI() |
| { |
| return LOCAL; |
| } |
| |
| public String getName() |
| { |
| return "Locally Installed Repository"; |
| } |
| |
| public synchronized long getLastModified() |
| { |
| return m_snapshotTimeStamp; |
| } |
| |
| public synchronized Resource[] getResources() |
| { |
| return m_localResourceList.values().toArray(new Resource[m_localResourceList.size()]); |
| } |
| |
| private void initialize() |
| { |
| // register for bundle and service events now |
| m_context.addBundleListener(this); |
| m_context.addServiceListener(this); |
| |
| // Generate the resource list from the set of installed bundles. |
| // Lock so we can ensure that no bundle events arrive before we |
| // are done getting our state snapshot. |
| Bundle[] bundles; |
| synchronized (this) |
| { |
| // Create a local resource object for each bundle, which will |
| // convert the bundle headers to the appropriate resource metadata. |
| bundles = m_context.getBundles(); |
| for (int i = 0; (bundles != null) && (i < bundles.length); i++) |
| { |
| addBundle(bundles[i]); |
| } |
| |
| m_snapshotTimeStamp = System.currentTimeMillis(); |
| } |
| } |
| } |