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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
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*/
package org.apache.felix.dm.test.integration.api;
import junit.framework.Assert;
import org.apache.felix.dm.Component;
import org.apache.felix.dm.DependencyManager;
import org.apache.felix.dm.test.components.Ensure;
import org.apache.felix.dm.test.integration.common.TestBase;
import org.junit.Test;
import org.junit.runner.RunWith;
/**
* Tests for extra dependencies which are declared from service's init method.
*/
import org.ops4j.pax.exam.junit.PaxExam;
@RunWith(PaxExam.class)
public class FELIX2344_ExtraDependencyWithCallbackTest extends TestBase {
/**
* Checks if an extra optional/required dependency is properly injected into a consumer, using callbacks.
*/
@Test
public void testExtraDependencyWithCallback() {
DependencyManager m = new DependencyManager(context);
// helper class that ensures certain steps get executed in sequence
Ensure e = new Ensure();
// create a service consumer and provider
Component sp = m.createComponent().setInterface(ProviderInterface.class.getName(), null).setImplementation(ProviderImpl.class);
Component sc = m.createComponent().setImplementation(new Client(e, false, 1));
Component sc2 = m.createComponent().setImplementation(new Client(e, true, 5));
Component sc3 = m.createComponent().setImplementation(new Client(e, true, 9));
// add the provider first, then add the consumer which initially will have no dependencies
// but via the init() method an optional dependency with a callback method will be added
m.add(sp);
m.add(sc);
// remove the consumer again
m.remove(sc);
e.waitForStep(4, 5000);
// next up, add a second consumer, identical to the first, but with a required dependency
// with a callback method which will be added in the init() method
m.add(sc2);
// remove the consumer again
m.remove(sc2);
e.waitForStep(8, 5000);
// now remove the provider, add a third consumer, identical to the second, and after the
// consumer has started, add the provider again
m.remove(sp);
m.add(sc3);
m.add(sp);
e.waitForStep(12, 5000);
m.clear();
}
public interface ProviderInterface {
}
public static class ProviderImpl implements ProviderInterface {
}
public static class Client {
ProviderInterface m_provider;
private Ensure m_ensure;
private final boolean m_required;
private final int m_startStep;
public Client(Ensure e, boolean required, int startStep) {
m_ensure = e;
m_required = required;
m_startStep = startStep;
}
public void init(Component s) {
DependencyManager dm = s.getDependencyManager();
m_ensure.step(m_startStep);
s.add(dm.createServiceDependency()
.setInstanceBound(true)
.setService(ProviderInterface.class)
.setRequired(m_required)
.setCallbacks("bind", null));
}
// called before start() for required dependency, or after start for optional dependency
void bind(ProviderInterface provider) {
System.out.println("bind");
m_ensure.step(m_required ? m_startStep + 1 : m_startStep + 3);
m_provider = provider;
}
public void start() {
System.out.println("start");
m_ensure.step(m_required ? m_startStep + 2: m_startStep + 1);
if (m_required) {
Assert.assertNotNull("Dependendency should have been injected", m_provider);
}
m_ensure.step(m_required ? m_startStep + 3: m_startStep + 2);
}
}
}