| /* |
| * 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.example.servicebased.host.launch; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Map; |
| import org.osgi.framework.Constants; |
| |
| /** |
| * Util class for creating the framework configuration |
| */ |
| final class ConfigUtil |
| { |
| /** |
| * Creates a configuration for the framework. Therefore this method attempts to create |
| * a temporary cache dir. If creation of the cache dir is successful, it will be added |
| * to the configuration. |
| * |
| * @return |
| */ |
| public static Map<String, String> createConfig() |
| { |
| final File cachedir = createCacheDir(); |
| |
| Map<String, String> configMap = new HashMap<String, String>(); |
| // Tells the framework to export the extension package, making it accessible |
| // for the other shape bundles |
| configMap.put(Constants.FRAMEWORK_SYSTEMPACKAGES_EXTRA, |
| "org.apache.felix.example.servicebased.host.service; version=1.0.0"); |
| |
| // if we could create a cache dir, we use it. Otherwise the platform default will be used |
| if (cachedir != null) |
| { |
| configMap.put(Constants.FRAMEWORK_STORAGE, cachedir.getAbsolutePath()); |
| } |
| |
| return configMap; |
| } |
| |
| /** |
| * Tries to create a temporay cache dir. If creation of the cache dir is successful, |
| * it will be returned. If creation fails, null will be returned. |
| * |
| * @return a {@code File} object representing the cache dir |
| */ |
| private static File createCacheDir() |
| { |
| final File cachedir; |
| try |
| { |
| cachedir = File.createTempFile("felix.example.extenderbased", null); |
| cachedir.delete(); |
| createShutdownHook(cachedir); |
| return cachedir; |
| } |
| catch (IOException e) |
| { |
| // temp dir creation failed, return null |
| return null; |
| } |
| } |
| |
| /** |
| * Adds a shutdown hook to the runtime, that will make sure, that the cache dir will |
| * be deleted after the application has been terminated. |
| */ |
| private static void createShutdownHook(final File cachedir) |
| { |
| Runtime.getRuntime().addShutdownHook(new Thread() |
| { |
| @Override |
| public void run() |
| { |
| deleteFileOrDir(cachedir); |
| } |
| }); |
| } |
| |
| |
| /** |
| * Utility method used to delete the profile directory when run as |
| * a stand-alone application. |
| * @param file The file to recursively delete. |
| **/ |
| private static void deleteFileOrDir(File file) |
| { |
| if (file.isDirectory()) |
| { |
| File[] childs = file.listFiles(); |
| for (File child : childs) |
| { |
| deleteFileOrDir(child); |
| } |
| } |
| file.delete(); |
| } |
| } |