ServiceRegistrationOSGiImpl.java

/*
 * 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.aries.osgi.functional.internal;

import org.osgi.framework.ServiceRegistration;

import java.util.Hashtable;
import java.util.Map;
import java.util.function.Consumer;

/**
 * @author Carlos Sierra Andrés
 */
public class ServiceRegistrationOSGiImpl<T, S extends T>
	extends OSGiImpl<ServiceRegistration<T>> {

	public ServiceRegistrationOSGiImpl(
		Class<T> clazz, S service, Map<String, Object> properties) {

		super(bundleContext -> {
			ServiceRegistration<T> serviceRegistration =
				bundleContext.registerService(
					clazz, service, new Hashtable<>(properties));

			Pipe<Tuple
				<ServiceRegistration<T>>, Tuple<ServiceRegistration<T>>>
				added = Pipe.create();

			Consumer<Tuple<ServiceRegistration<T>>> addedSource =
				added.getSource();

			Tuple<ServiceRegistration<T>> tuple = Tuple.create(
				serviceRegistration);

			return new OSGiResultImpl<>(
				added, Pipe.create(),
				() -> addedSource.accept(tuple),
				() -> {
					try {
						serviceRegistration.unregister();
					}
					catch (Exception e) {
					}
				});
		});
	}

}