| /* |
| * 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.ace.repository.impl; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.Dictionary; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.ace.repository.Repository; |
| import org.apache.ace.repository.RepositoryReplication; |
| import org.apache.ace.repository.impl.constants.RepositoryConstants; |
| import org.apache.felix.dm.DependencyManager; |
| import org.apache.felix.dm.service.Service; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.service.cm.ConfigurationException; |
| import org.osgi.service.cm.ManagedServiceFactory; |
| import org.osgi.service.log.LogService; |
| import org.osgi.service.prefs.BackingStoreException; |
| import org.osgi.service.prefs.Preferences; |
| import org.osgi.service.prefs.PreferencesService; |
| |
| /** |
| * A <code>ManagedServiceFactory</code> responsible for creating a (<code>Replication</code>)<code>Repository</code> |
| * instance for each valid configuration that is received from the <code>ConfigurationAdmin</code>. |
| */ |
| public class RepositoryFactory implements ManagedServiceFactory { |
| |
| private volatile LogService m_log; /* injected by dependency manager */ |
| private volatile BundleContext m_context; /* injected by dependency manager */ |
| private volatile PreferencesService m_prefsService; /* injected by dependency manager */ |
| |
| private File m_tempDir; |
| private File m_baseDir; |
| private Preferences m_prefs; |
| private final DependencyManager m_manager; |
| private final Map<String, Service> m_instances = new HashMap<String, Service>(); |
| |
| public RepositoryFactory(DependencyManager manager) { |
| m_manager = manager; |
| } |
| |
| public synchronized void deleted(String pid) { |
| // pull service |
| Service service = m_instances.remove(pid); |
| if (service != null) { |
| m_manager.remove(service); |
| } |
| |
| // remove persisted data |
| File dir = new File(m_baseDir, pid); |
| if (dir.isDirectory()) { |
| File[] files = dir.listFiles(); |
| for (int i = 0; (files != null) && (i < files.length); i++) { |
| files[i].delete(); |
| } |
| if (!dir.delete()) { |
| m_log.log(LogService.LOG_WARNING, "Unable to clean up files ( in " + dir.getAbsolutePath() + ") after removing repository"); |
| } |
| } |
| try { |
| m_prefs.node(pid).removeNode(); |
| m_prefs.sync(); |
| } |
| catch (BackingStoreException e) { |
| // Not much we can do |
| } |
| } |
| |
| public String getName() { |
| return "RepositoryFactory"; |
| } |
| |
| public synchronized void init() { |
| m_tempDir = m_context.getDataFile("tmp"); |
| if ((m_tempDir != null) && !m_tempDir.isDirectory() && !m_tempDir.mkdirs()) { |
| throw new IllegalArgumentException("Unable to create temp directory (" + m_tempDir.getAbsolutePath() + ")"); |
| } |
| m_baseDir = m_context.getDataFile("repos"); |
| if ((m_baseDir != null) && !m_baseDir.isDirectory() && !m_baseDir.mkdirs()) { |
| throw new IllegalArgumentException("Unable to create base directory (" + m_baseDir.getAbsolutePath() + ")"); |
| } |
| } |
| |
| /** |
| * Creates a new instance if the supplied dictionary contains a valid configuration. A configuration is valid if |
| * <code>RepositoryConstants.REPOSITORY_NAME</code> and <code>RepositoryConstants.REPOSITORY_CUSTOMER</code> properties |
| * are present, not empty and the combination of the two is unique in respect to other previously created instances. |
| * Finally a property <code>RepositoryConstants.REPOSITORY_MASTER</code> should be present and be either <code>true</code> |
| * or <code>false</code>. |
| * |
| * @param pid A unique identifier for the instance, generated by <code>ConfigurationAdmin</code> normally. |
| * @param dict The configuration properties for the instance, see description above. |
| * @throws ConfigurationException If any of the above explanation fails <b>or</b>when there is an internal error creating the repository. |
| */ |
| @SuppressWarnings("unchecked") |
| public synchronized void updated(String pid, Dictionary dict) throws ConfigurationException { |
| String name = (String) dict.get(RepositoryConstants.REPOSITORY_NAME); |
| if ((name == null) || "".equals(name)) { |
| throw new ConfigurationException(RepositoryConstants.REPOSITORY_NAME, "Repository name has to be specified."); |
| } |
| |
| String customer = (String) dict.get(RepositoryConstants.REPOSITORY_CUSTOMER); |
| if ((customer == null) || "".equals(customer)) { |
| throw new ConfigurationException(RepositoryConstants.REPOSITORY_CUSTOMER, "Repository customer has to be specified."); |
| } |
| |
| String master = (String) dict.get(RepositoryConstants.REPOSITORY_MASTER); |
| if (!("false".equalsIgnoreCase(master.trim()) || "true".equalsIgnoreCase(master.trim()))) { |
| throw new ConfigurationException(RepositoryConstants.REPOSITORY_MASTER, "Have to specify whether the repository is the master or a slave."); |
| } |
| boolean isMaster = Boolean.parseBoolean(master); |
| |
| String initialContents = (String) dict.get(RepositoryConstants.REPOSITORY_INITIAL_CONTENT); |
| |
| if (m_prefs == null) { |
| m_prefs = m_prefsService.getSystemPreferences(); |
| } |
| |
| String[] nodes; |
| try { |
| nodes = m_prefs.childrenNames(); |
| } |
| catch (BackingStoreException e) { |
| throw new ConfigurationException("none", "Internal error while validating configuration."); |
| } |
| for (int i = 0; i < nodes.length; i++) { |
| Preferences node = m_prefs.node(nodes[i]); |
| if (name.equalsIgnoreCase(node.get(RepositoryConstants.REPOSITORY_NAME, "")) && name.equalsIgnoreCase(node.get(RepositoryConstants.REPOSITORY_CUSTOMER, ""))) { |
| throw new ConfigurationException("name and customer", "Name and customer combination already exists"); |
| } |
| } |
| |
| Preferences node = m_prefs.node(pid); |
| node.put(RepositoryConstants.REPOSITORY_NAME, name); |
| node.put(RepositoryConstants.REPOSITORY_CUSTOMER, customer); |
| |
| Service service = m_instances.get(pid); |
| if (service == null) { |
| // new instance |
| File dir = new File(m_baseDir, pid); |
| RepositoryImpl store = new RepositoryImpl(dir, m_tempDir, isMaster); |
| if ((initialContents != null) && isMaster) { |
| try { |
| store.commit(new ByteArrayInputStream(initialContents.getBytes()), 0); |
| } |
| catch (IOException e) { |
| m_log.log(LogService.LOG_ERROR, "Unable to set initial contents of the repository.", e); |
| } |
| } |
| service = m_manager.createComponent() |
| .setInterface(new String[] {RepositoryReplication.class.getName(), Repository.class.getName()}, dict) |
| .setImplementation(store) |
| .add(m_manager.createServiceDependency().setService(LogService.class).setRequired(false)); |
| m_manager.add(service); |
| m_instances.put(pid, service); |
| } else { |
| // update existing instance |
| RepositoryImpl store = (RepositoryImpl) service.getService(); |
| store.updated(isMaster); |
| } |
| } |
| } |