Examples with Dependency org.apache.felix.dm.Dependency used on opensource projects

Example 6 with Dependency

use of org.apache.felix.dm.Dependency in project felix by apache.

the class RemovedDependencyTest method testRemoveDependencyAndConsumerMustRemainStarted.

public void testRemoveDependencyAndConsumerMustRemainStarted() {
    DependencyManager m = getDM();
    // helper class that ensures certain steps get executed in sequence
    Ensure e = new Ensure();
    // Create two providers
    Hashtable props = new Hashtable();
    props.put("name", "provider1");
    Component sp = m.createComponent().setImplementation(new ServiceProvider(e)).setInterface(ServiceInterface.class.getName(), props);
    props = new Properties();
    props.put("name", "provider2");
    Component sp2 = m.createComponent().setImplementation(new ServiceProvider(e)).setInterface(ServiceInterface.class.getName(), props);
    props = new Properties();
    props.put("name", "provider3");
    Component sp3 = m.createComponent().setImplementation(new ServiceProvider(e)).setInterface(ServiceInterface.class.getName(), props);
    // Create the consumer, and start it
    Dependency d1 = m.createServiceDependency().setService(ServiceInterface.class, "(name=provider1)").setRequired(true).setCallbacks("add", "remove");
    Dependency d2 = m.createServiceDependency().setService(ServiceInterface.class, "(name=provider2)").setRequired(true).setCallbacks("add", "remove");
    Dependency d3 = m.createServiceDependency().setService(ServiceInterface.class, "(name=provider3)").setRequired(true).setCallbacks("add", "remove");
    ServiceConsumer consumer = new ServiceConsumer(e, d3);
    Component sc = m.createComponent().setImplementation(consumer).add(d1, d2);
    // Add the first two providers and the consumer
    m.add(sp);
    m.add(sp2);
    m.add(sp3);
    m.add(sc);
    // Check if consumer has been bound to the three providers
    e.waitForStep(3, 5000);
    Assert.assertEquals(3, consumer.getProvidersCount());
    Assert.assertNotNull(consumer.getProvider("provider1"));
    Assert.assertNotNull(consumer.getProvider("provider2"));
    Assert.assertNotNull(consumer.getProvider("provider3"));
    // Now remove the provider2, and check if the consumer is still alive
    sc.remove(d2);
    Assert.assertFalse(consumer.isStopped());
    Assert.assertEquals(2, consumer.getProvidersCount());
    Assert.assertNotNull(consumer.getProvider("provider1"));
    Assert.assertNull(consumer.getProvider("provider2"));
    Assert.assertNotNull(consumer.getProvider("provider3"));
    // Now remove the provider3 (the consumer has an instance bound dependency on it), and check if the consumer is still alive
    sc.remove(d3);
    Assert.assertFalse(consumer.isStopped());
    Assert.assertEquals(1, consumer.getProvidersCount());
    Assert.assertNotNull(consumer.getProvider("provider1"));
    Assert.assertNull(consumer.getProvider("provider2"));
    Assert.assertNull(consumer.getProvider("provider3"));
    m.clear();
}

Example 7 with Dependency

use of org.apache.felix.dm.Dependency in project felix by apache.

the class ResourceAdapterDependencyAddAndRemoveTest method testBasicResourceAdapter.

public void testBasicResourceAdapter() throws Exception {
    DependencyManager m = getDM();
    // helper class that ensures certain steps get executed in sequence
    Ensure e = new Ensure();
    // create and add a service provider
    m.add(m.createComponent().setInterface(ServiceInterface.class.getName(), null).setImplementation(new ServiceProvider(e)));
    // create and add a resource provider
    ResourceProvider provider = new ResourceProvider(context, new URL("file://localhost/path/to/file1.txt"));
    m.add(m.createComponent().setImplementation(provider).add(m.createServiceDependency().setService(ResourceHandler.class).setCallbacks("add", "remove")));
    // create a resource adapter for our single resource
    // note that we can provide an actual implementation instance here because there will be only one
    // adapter, normally you'd want to specify a Class here
    // also, create a callback instance which will be used for both callbacks on resource changes and
    // life cycle callbacks on the adapters themselves
    Dependency d = m.createServiceDependency().setService(ServiceInterface.class).setRequired(true);
    CallbackInstance callbackInstance = new CallbackInstance(e, d);
    Component component = m.createResourceAdapterService("(&(path=/path/to/*.txt)(host=localhost))", false, callbackInstance, "changed").setImplementation(new ResourceAdapter(e)).setCallbacks(callbackInstance, "init", "start", "stop", "destroy");
    // add the resource adapter
    m.add(component);
    // wait until the single resource is available (the adapter has been started)
    e.waitForStep(1, 5000);
    // trigger a 'change' in our resource
    provider.change();
    // wait until the changed callback is invoked
    e.waitForStep(2, 5000);
    // and has completed (ensuring no "extra" steps are invoked in the mean time)
    e.waitForStep(3, 5000);
    // remove the resource adapter again
    // add a component state listener, in order to track resource adapter destruction
    component.add(new ComponentStateListenerImpl(e));
    m.remove(component);
    // wait for the stopped callback in the state listener
    e.waitForStep(4, 5000);
    m.clear();
}

Example 8 with Dependency

use of org.apache.felix.dm.Dependency in project felix by apache.

the class FELIX4913_OptionalCallbackInvokedTwiceTest method test_A_Defines_BDependency_FromInitMethod.

public void test_A_Defines_BDependency_FromInitMethod() throws Throwable {
    final DependencyManager m = getDM();
    Ensure e = new Ensure();
    Component bFactory = m.createComponent().setImplementation(new BFactory()).setInterface(BFactory.class.getName(), null);
    Dependency dep = m.createServiceDependency().setService(B.class).setRequired(false).setCallbacks("bind", "unbind");
    Component a = m.createComponent().setImplementation(new A(e, dep)).add(m.createServiceDependency().setService(BFactory.class).setRequired(false).setCallbacks("bind", "unbind"));
    // Enable first bFactory.
    m.add(bFactory);
    // Then Enable A.
    m.add(a);
    // A should get BFactory, then it should instantiate B, and B should then be bound to A.
    e.waitForStep(4, 5000);
    // Now, remove BFactory. The AComponent should then call bFactory.removeB(), abd A.unbind(B) should be called.
    m.remove(bFactory);
    e.waitForStep(6, 5000);
    e.ensure();
    clearComponents();
}

Example 9 with Dependency

use of org.apache.felix.dm.Dependency in project felix by apache.

the class ResourceAdapterDependencyAddAndRemoveTest2 method testBasicResourceAdapter.

public void testBasicResourceAdapter() throws Exception {
    DependencyManager m = getDM();
    // helper class that ensures certain steps get executed in sequence
    Ensure e = new Ensure();
    // create a resource provider
    ResourceProvider provider = new ResourceProvider(context, new URL("file://localhost/path/to/file1.txt"));
    // activate it
    Hashtable<String, String> props = new Hashtable<String, String>();
    props.put("id", "1");
    m.add(m.createComponent().setInterface(ServiceInterface.class.getName(), props).setImplementation(new ServiceProvider(e)));
    props = new Hashtable<String, String>();
    props.put("id", "2");
    m.add(m.createComponent().setInterface(ServiceInterface.class.getName(), props).setImplementation(new ServiceProvider(e)));
    m.add(m.createComponent().setImplementation(provider).add(m.createServiceDependency().setService(ResourceHandler.class).setCallbacks("add", "remove")));
    // create a resource adapter for our single resource
    // note that we can provide an actual implementation instance here because there will be only one
    // adapter, normally you'd want to specify a Class here
    Dependency d = m.createServiceDependency().setService(ServiceInterface.class, "(id=1)").setRequired(true);
    ResourceAdapter service = new ResourceAdapter(e, d);
    CallbackInstance callbackInstance = new CallbackInstance(e, d);
    Component component = m.createResourceAdapterService("(&(path=/path/to/*.txt)(host=localhost))", false, callbackInstance, "changed").setImplementation(service).setCallbacks(callbackInstance, "init", "start", "stop", "destroy");
    component.add(new ComponentStateListenerImpl(e));
    m.add(component);
    // wait until the single resource is available
    e.waitForStep(1, 5000);
    // trigger a 'change' in our resource
    provider.change();
    // wait until the changed callback is invoked
    e.waitForStep(2, 5000);
    System.out.println("Done!");
    m.clear();
}

Example 10 with Dependency

use of org.apache.felix.dm.Dependency in project felix by apache.

the class RemovedDependencyTest method testRemoveDependencyAndConsumerMustRemainStarted.

public void testRemoveDependencyAndConsumerMustRemainStarted() {
    DependencyManager m = getDM();
    // helper class that ensures certain steps get executed in sequence
    Ensure e = new Ensure();
    // Create two providers
    Hashtable props = new Hashtable();
    props.put("name", "provider1");
    Component sp = component(m).impl(new ServiceProvider(e)).provides(ServiceInterface.class, props).build();
    props = new Properties();
    props.put("name", "provider2");
    Component sp2 = component(m).impl(new ServiceProvider(e)).provides(ServiceInterface.class.getName(), props).build();
    props = new Properties();
    props.put("name", "provider3");
    Component sp3 = component(m).impl(new ServiceProvider(e)).provides(ServiceInterface.class.getName(), props).build();
    // Create the consumer, and start it
    Dependency d3 = m.createServiceDependency().setService(ServiceInterface.class, "(name=provider3)").setRequired(true).setCallbacks("add", "remove");
    ServiceConsumer consumer = new ServiceConsumer(e, d3);
    Component sc = component(m).impl(consumer).build();
    Dependency d1 = serviceDependency(sc, ServiceInterface.class).filter("(name=provider1)").add("add").remove("remove").build();
    Dependency d2 = serviceDependency(sc, ServiceInterface.class).filter("(name=provider2)").add("add").remove("remove").build();
    sc.add(d1, d2);
    // Add the first two providers and the consumer
    m.add(sp);
    m.add(sp2);
    m.add(sp3);
    m.add(sc);
    // Check if consumer has been bound to the three providers
    e.waitForStep(3, 5000);
    Assert.assertEquals(3, consumer.getProvidersCount());
    Assert.assertNotNull(consumer.getProvider("provider1"));
    Assert.assertNotNull(consumer.getProvider("provider2"));
    Assert.assertNotNull(consumer.getProvider("provider3"));
    // Now remove the provider2, and check if the consumer is still alive
    sc.remove(d2);
    Assert.assertFalse(consumer.isStopped());
    Assert.assertEquals(2, consumer.getProvidersCount());
    Assert.assertNotNull(consumer.getProvider("provider1"));
    Assert.assertNull(consumer.getProvider("provider2"));
    Assert.assertNotNull(consumer.getProvider("provider3"));
    // Now remove the provider3 (the consumer has an instance bound dependency on it), and check if the consumer is still alive
    sc.remove(d3);
    Assert.assertFalse(consumer.isStopped());
    Assert.assertEquals(1, consumer.getProvidersCount());
    Assert.assertNotNull(consumer.getProvider("provider1"));
    Assert.assertNull(consumer.getProvider("provider2"));
    Assert.assertNull(consumer.getProvider("provider3"));
    m.clear();
}