package org.jtheque.core.utils; import org.jtheque.utils.io.FileUtils; import org.osgi.framework.Bundle; import org.osgi.framework.BundleContext; import org.osgi.framework.BundleException; import org.osgi.framework.ServiceReference; import java.io.File; import java.io.FileNotFoundException; /* * Copyright JTheque (Baptiste Wicht) * * Licensed 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. */ /** * OSGi utilities. * * @author Baptiste Wicht */ public final class OSGiUtils { /** * Utility class, not instantiable. */ private OSGiUtils() { throw new AssertionError(); } /** * Return the service of the given class in the given bundle context. * * @param context The bundle context * @param type The class to get the service for. * @param <T> The type of service. * * @return The service of the given type. */ public static <T> T getService(BundleContext context, Class<T> type) { ServiceReference ref = context.getServiceReference(type.getName()); if (ref != null) { return type.cast(context.getService(ref)); } return null; } /** * Update the bundle with the given file. * * @param bundle The bundle to update. * @param file The new file of the bundle. */ public static void update(Bundle bundle, File file) { try { bundle.update(FileUtils.asInputStream(file)); } catch (BundleException e) { throw new RuntimeException(e); } catch (FileNotFoundException e) { throw new RuntimeException(e); } } }