Thomas Vachuska | 24c849c | 2014-10-27 09:53:05 -0700 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2014-present Open Networking Foundation |
Thomas Vachuska | 24c849c | 2014-10-27 09:53:05 -0700 | [diff] [blame] | 3 | * |
Thomas Vachuska | 4f1a60c | 2014-10-28 13:39:07 -0700 | [diff] [blame] | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
Thomas Vachuska | 24c849c | 2014-10-27 09:53:05 -0700 | [diff] [blame] | 7 | * |
Thomas Vachuska | 4f1a60c | 2014-10-28 13:39:07 -0700 | [diff] [blame] | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
Thomas Vachuska | 24c849c | 2014-10-27 09:53:05 -0700 | [diff] [blame] | 15 | */ |
tom | 0eb04ca | 2014-08-25 14:34:51 -0700 | [diff] [blame] | 16 | package org.onlab.osgi; |
| 17 | |
Ray Milkey | 816db10 | 2018-05-30 14:16:37 -0700 | [diff] [blame] | 18 | import org.osgi.framework.Bundle; |
tom | 0eb04ca | 2014-08-25 14:34:51 -0700 | [diff] [blame] | 19 | import org.osgi.framework.BundleContext; |
| 20 | import org.osgi.framework.FrameworkUtil; |
tom | caf3bf7 | 2014-09-23 13:20:53 -0700 | [diff] [blame] | 21 | import org.osgi.framework.ServiceReference; |
tom | 0eb04ca | 2014-08-25 14:34:51 -0700 | [diff] [blame] | 22 | |
| 23 | /** |
| 24 | * Default implementation of the service directory using OSGi framework utilities. |
| 25 | */ |
| 26 | public class DefaultServiceDirectory implements ServiceDirectory { |
tom | 0872a17 | 2014-09-23 11:24:26 -0700 | [diff] [blame] | 27 | |
| 28 | /** |
| 29 | * Returns the reference to the implementation of the specified service. |
| 30 | * |
| 31 | * @param serviceClass service class |
| 32 | * @param <T> type of service |
| 33 | * @return service implementation |
| 34 | */ |
| 35 | public static <T> T getService(Class<T> serviceClass) { |
Ray Milkey | 816db10 | 2018-05-30 14:16:37 -0700 | [diff] [blame] | 36 | Bundle bundle = FrameworkUtil.getBundle(serviceClass); |
| 37 | if (bundle != null) { |
| 38 | BundleContext bc = bundle.getBundleContext(); |
| 39 | if (bc != null) { |
| 40 | ServiceReference<T> reference = bc.getServiceReference(serviceClass); |
| 41 | if (reference != null) { |
| 42 | T impl = bc.getService(reference); |
| 43 | if (impl != null) { |
| 44 | return impl; |
| 45 | } |
tom | caf3bf7 | 2014-09-23 13:20:53 -0700 | [diff] [blame] | 46 | } |
| 47 | } |
tom | 0eb04ca | 2014-08-25 14:34:51 -0700 | [diff] [blame] | 48 | } |
tom | caf3bf7 | 2014-09-23 13:20:53 -0700 | [diff] [blame] | 49 | throw new ServiceNotFoundException("Service " + serviceClass.getName() + " not found"); |
tom | 0eb04ca | 2014-08-25 14:34:51 -0700 | [diff] [blame] | 50 | } |
tom | 0872a17 | 2014-09-23 11:24:26 -0700 | [diff] [blame] | 51 | |
| 52 | @Override |
| 53 | public <T> T get(Class<T> serviceClass) { |
| 54 | return getService(serviceClass); |
| 55 | } |
| 56 | |
tom | 0eb04ca | 2014-08-25 14:34:51 -0700 | [diff] [blame] | 57 | } |