dependencymanager/org.apache.felix.dependencymanager.itest/src/org/apache/felix/dm/itest/api/FELI5155_AdapterCallbackInstanceCalledTwice.java

package org.apache.felix.dm.itest.api;
import org.apache.felix.dm.Component;
import org.apache.felix.dm.DependencyManager;
import org.apache.felix.dm.itest.util.Ensure;
import org.apache.felix.dm.itest.util.TestBase;
import org.junit.Assert;

public class FELI5155_AdapterCallbackInstanceCalledTwice extends TestBase {
    static Ensure m_e;
    
    public void testAdapterCallbackInstanceCalledTwice() {
        DependencyManager m = getDM();
        m_e = new Ensure();
        
        S1AdapterImpl adapterImpl = new S1AdapterImpl();
        S2DependencyCallbackInstance cb = new S2DependencyCallbackInstance(adapterImpl);            
        
        Component s1 = m.createComponent().setImplementation(S1Impl.class).setInterface(S1.class.getName(), null);
        Component s2 = m.createComponent().setImplementation(S2Impl.class).setInterface(S2.class.getName(), null);

        Component s1Adapter = m.createAdapterService(S1.class, null, "setS1", null, null, null)
            .setImplementation(adapterImpl)
            .add(m.createServiceDependency().setService(S2.class).setRequired(true).setCallbacks(cb, "setS2", null, null, null));
        
        m.add(s1);
        m.add(s1Adapter);
        m.add(s2);
        
        m_e.waitForStep(2, 5000);
        clearComponents();
    }
    
    
    public interface S1 {
    }
    
    public static class S1Impl implements S1 {
    }
    
    public interface S2 {
    }
    
    public static class S2Impl implements S2 {
    }

    public static class S1AdapterImpl {
        volatile S1 m_s1;
        volatile S2 m_s2;
        
        void setS1(S1 s1) {
            m_s1 = s1;
        }
        
        void setS2(S2 s2) {
            Assert.assertNull("service already injected: ", m_s2);
            m_s2 = s2;
            m_e.step(1);
        }
        
        void start() {
            Assert.assertNotNull("service s1 not injected", m_s1);
            m_e.step(2);
        }
    }
    
    public static class S2DependencyCallbackInstance {
        final S1AdapterImpl m_adapter;
        
        S2DependencyCallbackInstance(S1AdapterImpl adapter) {
            m_adapter = adapter;
        }
        
        void setS2(S2 s2) {
            m_adapter.setS2(s2);
        }
    }
}