| /* |
| * 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.http.jetty.internal; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.when; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.felix.http.jetty.LoadBalancerCustomizerFactory; |
| import org.eclipse.jetty.server.Connector; |
| import org.eclipse.jetty.server.HttpConfiguration; |
| import org.eclipse.jetty.server.HttpConfiguration.Customizer; |
| import org.eclipse.jetty.server.Request; |
| import org.junit.Test; |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.ServiceReference; |
| |
| public class LoadBalancerCustomizerFactoryTrackerTest |
| { |
| |
| @Test public void testTrackerOrdering() throws Exception |
| { |
| final BundleContext bc = mock(BundleContext.class); |
| final CustomizerWrapper wrapper = new CustomizerWrapper(); |
| |
| final List<String> result = new ArrayList<>(); |
| |
| final LoadBalancerCustomizerFactoryTracker tracker = new LoadBalancerCustomizerFactoryTracker(bc, wrapper); |
| |
| wrapper.customize(null, null, null); |
| assertTrue(result.isEmpty()); |
| |
| final ServiceReference<LoadBalancerCustomizerFactory> refA = create(bc, result, 5, "A"); |
| final ServiceReference<LoadBalancerCustomizerFactory> refB = create(bc, result, 15, "B"); |
| final ServiceReference<LoadBalancerCustomizerFactory> refC = create(bc, result, 25, "C"); |
| |
| // just A |
| tracker.addingService(refA); |
| |
| wrapper.customize(null, null, null); |
| assertEquals(1, result.size()); |
| assertEquals("A", result.get(0)); |
| result.clear(); |
| |
| // add B, B is highest |
| tracker.addingService(refB); |
| |
| wrapper.customize(null, null, null); |
| assertEquals(1, result.size()); |
| assertEquals("B", result.get(0)); |
| result.clear(); |
| |
| // add C, C is highest |
| tracker.addingService(refC); |
| |
| wrapper.customize(null, null, null); |
| assertEquals(1, result.size()); |
| assertEquals("C", result.get(0)); |
| result.clear(); |
| |
| // remove B, C is still highest |
| tracker.removedService(refB, refB); |
| |
| wrapper.customize(null, null, null); |
| assertEquals(1, result.size()); |
| assertEquals("C", result.get(0)); |
| result.clear(); |
| |
| // remove C, A is highest |
| tracker.removedService(refC, refC); |
| |
| wrapper.customize(null, null, null); |
| assertEquals(1, result.size()); |
| assertEquals("A", result.get(0)); |
| result.clear(); |
| |
| // remove A, no customizer |
| tracker.removedService(refA, refA); |
| |
| wrapper.customize(null, null, null); |
| assertTrue(result.isEmpty()); |
| } |
| |
| @Test public void testTrackerCreateFailures() throws Exception |
| { |
| final BundleContext bc = mock(BundleContext.class); |
| final CustomizerWrapper wrapper = new CustomizerWrapper(); |
| |
| final List<String> result = new ArrayList<>(); |
| |
| final LoadBalancerCustomizerFactoryTracker tracker = new LoadBalancerCustomizerFactoryTracker(bc, wrapper); |
| |
| wrapper.customize(null, null, null); |
| assertTrue(result.isEmpty()); |
| |
| final ServiceReference<LoadBalancerCustomizerFactory> refA = create(bc, result, 5, "A"); |
| final ServiceReference<LoadBalancerCustomizerFactory> refB = create(bc, result, 15, null); |
| final ServiceReference<LoadBalancerCustomizerFactory> refC = create(bc, result, 25, "C"); |
| |
| // add A, C, B - C is highest |
| tracker.addingService(refA); |
| tracker.addingService(refC); |
| tracker.addingService(refB); |
| |
| wrapper.customize(null, null, null); |
| assertEquals(1, result.size()); |
| assertEquals("C", result.get(0)); |
| result.clear(); |
| |
| // remove C, B returns null, therefore A is used |
| tracker.removedService(refC, refC); |
| |
| wrapper.customize(null, null, null); |
| assertEquals(1, result.size()); |
| assertEquals("A", result.get(0)); |
| result.clear(); |
| |
| // remove A, no wrapper |
| tracker.removedService(refA, refA); |
| wrapper.customize(null, null, null); |
| assertTrue(result.isEmpty()); |
| |
| // remove B, no wrapper |
| tracker.removedService(refB, refB); |
| wrapper.customize(null, null, null); |
| assertTrue(result.isEmpty()); |
| } |
| |
| private ServiceReference<LoadBalancerCustomizerFactory> create(final BundleContext bc, |
| final List<String> result, |
| final int ranking, |
| final String identifier) |
| { |
| |
| final ServiceReference<LoadBalancerCustomizerFactory> refA = new ServiceReferenceImpl(ranking); |
| when(bc.getService(refA)).thenReturn(new LoadBalancerCustomizerFactory() |
| { |
| |
| @Override |
| public Customizer createCustomizer() |
| { |
| if ( identifier == null ) |
| { |
| return null; |
| } |
| return new Customizer() |
| { |
| |
| @Override |
| public void customize(Connector connector, HttpConfiguration channelConfig, Request request) |
| { |
| result.add(identifier); |
| } |
| }; |
| } |
| }); |
| |
| return refA; |
| } |
| |
| private static class ServiceReferenceImpl implements ServiceReference<LoadBalancerCustomizerFactory> |
| { |
| |
| private final int serviceRanking; |
| |
| public ServiceReferenceImpl(final int ranking) |
| { |
| this.serviceRanking = ranking; |
| } |
| |
| @Override |
| public Object getProperty(String key) |
| { |
| return null; |
| } |
| |
| @Override |
| public String[] getPropertyKeys() |
| { |
| return null; |
| } |
| |
| @Override |
| public Bundle getBundle() |
| { |
| return null; |
| } |
| |
| @Override |
| public Bundle[] getUsingBundles() |
| { |
| return null; |
| } |
| |
| @Override |
| public boolean isAssignableTo(Bundle bundle, String className) |
| { |
| return false; |
| } |
| |
| @Override |
| public int compareTo(Object reference) |
| { |
| final ServiceReferenceImpl o = (ServiceReferenceImpl)reference; |
| if ( serviceRanking < o.serviceRanking ) |
| { |
| return -1; |
| } |
| else if ( serviceRanking > o.serviceRanking ) |
| { |
| return 1; |
| } |
| return 0; |
| } |
| |
| }; |
| } |