Pierre De Rop | faca289 | 2016-01-31 23:27:05 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | * or more contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. The ASF licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.apache.felix.dm.lambda.itest; |
| 20 | |
| 21 | import static org.apache.felix.dm.lambda.DependencyManagerActivator.component; |
| 22 | import static org.apache.felix.dm.lambda.DependencyManagerActivator.serviceDependency; |
| 23 | |
| 24 | import java.util.ArrayList; |
| 25 | import java.util.Hashtable; |
| 26 | import java.util.List; |
| 27 | import java.util.Properties; |
| 28 | |
| 29 | import org.apache.felix.dm.Component; |
| 30 | import org.apache.felix.dm.Dependency; |
| 31 | import org.apache.felix.dm.DependencyManager; |
| 32 | import org.junit.Assert; |
| 33 | import org.osgi.framework.BundleContext; |
| 34 | import org.osgi.framework.ServiceReference; |
| 35 | |
| 36 | /** |
| 37 | * One consumer, Three providers. The Consumer has two required dependency on provider1, provider2, and one |
| 38 | * instance-bound required dependency on provider3. |
| 39 | * When the three providers are there, the consumer is started. |
| 40 | * |
| 41 | * This test asserts the following correct behaviors: |
| 42 | * - when we remove the dependency on provider2, then the consumer is not stopped. |
| 43 | * - when we remove the (instance-bound) dependency on provider3, then the consumer os not stopped. |
| 44 | * |
| 45 | * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| 46 | */ |
| 47 | @SuppressWarnings({"unchecked", "rawtypes", "unused"}) |
| 48 | public class RemovedDependencyTest extends TestBase { |
| 49 | public void testRemoveDependencyAndConsumerMustRemainStarted() { |
| 50 | DependencyManager m = getDM(); |
| 51 | // helper class that ensures certain steps get executed in sequence |
| 52 | Ensure e = new Ensure(); |
| 53 | // Create two providers |
| 54 | Hashtable props = new Hashtable(); |
| 55 | props.put("name", "provider1"); |
| 56 | Component sp = component(m).impl(new ServiceProvider(e)).provides(ServiceInterface.class, props).build(); |
| 57 | props = new Properties(); |
| 58 | props.put("name", "provider2"); |
| 59 | Component sp2 = component(m).impl(new ServiceProvider(e)).provides(ServiceInterface.class.getName(), props).build(); |
| 60 | props = new Properties(); |
| 61 | props.put("name", "provider3"); |
| 62 | Component sp3 = component(m).impl(new ServiceProvider(e)).provides(ServiceInterface.class.getName(), props).build(); |
| 63 | |
| 64 | // Create the consumer, and start it |
| 65 | Dependency d3 = m.createServiceDependency().setService(ServiceInterface.class, "(name=provider3)").setRequired(true).setCallbacks("add", "remove"); |
| 66 | |
| 67 | ServiceConsumer consumer = new ServiceConsumer(e, d3); |
| 68 | Component sc = component(m).impl(consumer).build(); |
| 69 | |
| 70 | Dependency d1 = serviceDependency(sc, ServiceInterface.class).filter("(name=provider1)").cb("add", "remove").build(); |
| 71 | Dependency d2 = serviceDependency(sc, ServiceInterface.class).filter("(name=provider2)").cb("add", "remove").build(); |
| 72 | |
| 73 | sc.add(d1, d2); |
| 74 | |
| 75 | // Add the first two providers and the consumer |
| 76 | m.add(sp); |
| 77 | m.add(sp2); |
| 78 | m.add(sp3); |
| 79 | m.add(sc); |
| 80 | |
| 81 | // Check if consumer has been bound to the three providers |
| 82 | e.waitForStep(3, 5000); |
| 83 | Assert.assertEquals(3, consumer.getProvidersCount()); |
| 84 | Assert.assertNotNull(consumer.getProvider("provider1")); |
| 85 | Assert.assertNotNull(consumer.getProvider("provider2")); |
| 86 | Assert.assertNotNull(consumer.getProvider("provider3")); |
| 87 | |
| 88 | // Now remove the provider2, and check if the consumer is still alive |
| 89 | sc.remove(d2); |
| 90 | Assert.assertFalse(consumer.isStopped()); |
| 91 | Assert.assertEquals(2, consumer.getProvidersCount()); |
| 92 | Assert.assertNotNull(consumer.getProvider("provider1")); |
| 93 | Assert.assertNull(consumer.getProvider("provider2")); |
| 94 | Assert.assertNotNull(consumer.getProvider("provider3")); |
| 95 | |
| 96 | // Now remove the provider3 (the consumer has an instance bound dependency on it), and check if the consumer is still alive |
| 97 | sc.remove(d3); |
| 98 | Assert.assertFalse(consumer.isStopped()); |
| 99 | Assert.assertEquals(1, consumer.getProvidersCount()); |
| 100 | Assert.assertNotNull(consumer.getProvider("provider1")); |
| 101 | Assert.assertNull(consumer.getProvider("provider2")); |
| 102 | Assert.assertNull(consumer.getProvider("provider3")); |
| 103 | |
| 104 | m.clear(); |
| 105 | } |
| 106 | |
| 107 | static interface ServiceInterface { |
| 108 | public void invoke(); |
| 109 | } |
| 110 | |
| 111 | class ServiceProvider implements ServiceInterface { |
| 112 | final Ensure m_ensure; |
| 113 | |
| 114 | public ServiceProvider(Ensure e) { |
| 115 | m_ensure = e; |
| 116 | } |
| 117 | public void invoke() { |
| 118 | m_ensure.step(); |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | class ServiceConsumer { |
| 123 | private final Ensure m_ensure; |
| 124 | private final List<ServiceReference> m_providers = new ArrayList<>(); |
| 125 | private BundleContext m_bc; |
| 126 | private boolean m_stopped; |
| 127 | private final Dependency m_dependency3; |
| 128 | |
| 129 | public ServiceConsumer(Ensure e, Dependency dependency3) { |
| 130 | m_ensure = e; |
| 131 | m_dependency3 = dependency3; |
| 132 | } |
| 133 | |
| 134 | public void add(ServiceReference ref) { |
| 135 | debug("ServiceConsumer.add(%s)", ref); |
| 136 | m_providers.add(ref); |
| 137 | ServiceInterface s = (ServiceInterface) m_bc.getService(ref); |
| 138 | s.invoke(); |
| 139 | } |
| 140 | |
| 141 | public void remove(ServiceReference ref) { |
| 142 | debug("ServiceConsumer.remove(%s)", ref); |
| 143 | m_providers.remove(ref); |
| 144 | debug("ServiceConsumer: current providers list=%s", m_providers); |
| 145 | } |
| 146 | |
| 147 | public void init(Component c) { |
| 148 | c.add(m_dependency3); |
| 149 | } |
| 150 | |
| 151 | public int getProvidersCount() { |
| 152 | return m_providers.size(); |
| 153 | } |
| 154 | |
| 155 | public ServiceInterface getProvider(String name) { |
| 156 | for (ServiceReference ref : m_providers) { |
| 157 | Object n = ref.getProperty("name"); |
| 158 | if (n.equals(name)) { |
| 159 | return (ServiceInterface) m_bc.getService(ref); |
| 160 | } |
| 161 | } |
| 162 | return null; |
| 163 | } |
| 164 | |
| 165 | public void stop() { |
| 166 | m_stopped = true; |
| 167 | } |
| 168 | |
| 169 | public boolean isStopped() { |
| 170 | return m_stopped; |
| 171 | } |
| 172 | } |
| 173 | } |