Examples with BeanProcessor org.apache.aries.blueprint.BeanProcessor used on opensource projects

Example 1 with BeanProcessor

use of org.apache.aries.blueprint.BeanProcessor in project aries by apache.

the class ASMMultiBundleTest method multiBundleTest.

// TODO This test seems to fail on some runs. Need to stabilize and reenable
@Test
@Ignore
public void multiBundleTest() throws Exception {
    //bundlea provides the ns handlers, bean processors, interceptors etc for this test.
    Bundle bundlea = context().getBundleByName("org.apache.aries.blueprint.testbundlea");
    assertNotNull(bundlea);
    bundlea.start();
    //bundleb makes use of the extensions provided by bundlea
    Bundle bundleb = context().getBundleByName("org.apache.aries.blueprint.testbundleb");
    assertNotNull(bundleb);
    bundleb.start();
    //bundleb's container will hold the beans we need to query to check the function
    //provided by bundlea functioned as expected
    BlueprintContainer beanContainer = Helper.getBlueprintContainerForBundle(context(), "org.apache.aries.blueprint.testbundleb");
    assertNotNull(beanContainer);
    //TestBeanA should have the values below, no interference should be present from other sources.
    Object obj1 = beanContainer.getComponentInstance("TestBeanA");
    assertTrue(obj1 instanceof TestBean);
    TestBean testBeanA = (TestBean) obj1;
    org.junit.Assert.assertEquals("RED", testBeanA.getRed());
    org.junit.Assert.assertEquals("GREEN", testBeanA.getGreen());
    org.junit.Assert.assertEquals("BLUE", testBeanA.getBlue());
    //TestBeanB tests that a custom ns handler is able to inject custom components to the blueprint, 
    //and modify existing components, and use injected components as modifications. 
    Object obj2 = beanContainer.getComponentInstance("TestBeanB");
    assertTrue(obj2 instanceof TestBean);
    TestBean testBeanB = (TestBean) obj2;
    //value should be set in via the added passthroughmetadata via the nshandler.
    org.junit.Assert.assertEquals("ONE_VALUE", testBeanB.getRed());
    org.junit.Assert.assertEquals("GREEN", testBeanB.getGreen());
    org.junit.Assert.assertEquals("BLUE", testBeanB.getBlue());
    //TestBeanC tests that custom ns handlers can add interceptors to beans.
    Object obj3 = beanContainer.getComponentInstance("TestBeanC");
    assertTrue(obj3 instanceof TestBean);
    TestBean testBeanC = (TestBean) obj3;
    //handlers are in bundlea, with its own container.
    BlueprintContainer handlerContainer = Helper.getBlueprintContainerForBundle(context(), "org.apache.aries.blueprint.testbundlea");
    assertNotNull(handlerContainer);
    Object ns1 = handlerContainer.getComponentInstance("NSHandlerOne");
    assertTrue(ns1 instanceof NSHandlerOne);
    Object ns2 = handlerContainer.getComponentInstance("NSHandlerTwo");
    assertTrue(ns2 instanceof NSHandlerTwo);
    NSHandlerTwo nstwo = (NSHandlerTwo) ns2;
    //now we have a handle to the nshandler2, we can query what it 'saw', and ensure
    //that the interceptors are functioning as expected.
    List<String> log = nstwo.getLog();
    //TestBeanC has the interceptor configured, and is injected to OtherBeanA & OtherBeanB
    //which then uses the injected bean during their init method call, to invoke a method
    checkInterceptorLog(new String[] { "PRECALL:TestBeanC:methodToInvoke:[RED]:", "POSTCALL[true]:TestBeanC:methodToInvoke:[RED]:", "PRECALL:TestBeanC:methodToInvoke:[BLUE]:", "POSTCALL[false]:TestBeanC:methodToInvoke:[BLUE]:" }, log);
    //invoking GREEN is hardwired to cause an exception response, we do this 
    //from here to ensure the exception occurs and is visible as expected
    RuntimeException re = null;
    try {
        testBeanC.methodToInvoke("GREEN");
    } catch (RuntimeException e) {
        re = e;
    }
    assertNotNull("invocation of Green did not cause an exception as expected", re);
    //Exception responses should be intercepted too, test for the POSTCALLWITHEXCEPTION log entry.
    log = nstwo.getLog();
    checkInterceptorLog(new String[] { "PRECALL:TestBeanC:methodToInvoke:[RED]:", "POSTCALL[true]:TestBeanC:methodToInvoke:[RED]:", "PRECALL:TestBeanC:methodToInvoke:[BLUE]:", "POSTCALL[false]:TestBeanC:methodToInvoke:[BLUE]:", "PRECALL:TestBeanC:methodToInvoke:[GREEN]:", "POSTCALLEXCEPTION[java.lang.RuntimeException: MATCHED ON GREEN (GREEN)]:TestBeanC:methodToInvoke:[GREEN]:" }, log);
    //ProcessedBean is a test to ensure that BeanProcessors are called.. 
    //The test has the BeanProcessor look for ProcessableBeans, and log itself with them
    Object obj4 = beanContainer.getComponentInstance("ProcessedBean");
    assertTrue(obj4 instanceof ProcessableBean);
    ProcessableBean pb = (ProcessableBean) obj4;
    //Note, the BeanProcessor exists in the same container as the beans it processes!! 
    Object bp = beanContainer.getComponentInstance("http://ns.handler.three/BeanProcessor");
    assertNotNull(bp);
    assertTrue(bp instanceof BeanProcessor);
    assertEquals(1, pb.getProcessedBy().size());
    //check we were invoked..
    assertEquals(pb.getProcessedBy().get(0), bp);
    //check invocation for each phase.
    assertEquals(pb.getProcessedBy(Phase.BEFORE_INIT).get(0), bp);
    assertEquals(pb.getProcessedBy(Phase.AFTER_INIT).get(0), bp);
    //destroy invocation will only occur at tear down.. TODO, how to test after teardown.
    //assertEquals(pb.getProcessedBy(Phase.BEFORE_DESTROY).get(0),bp);
    //assertEquals(pb.getProcessedBy(Phase.AFTER_DESTROY).get(0),bp);
    Object objOther = beanContainer.getComponentInstance("PlaceHolderTestBean");
    assertTrue(objOther instanceof OtherBean);
    assertEquals("test1value", ((OtherBean) objOther).getTestValue());
}

Example 2 with BeanProcessor

use of org.apache.aries.blueprint.BeanProcessor in project aries by apache.

the class BeanRecipe method runBeanProcPreInit.

private Object runBeanProcPreInit(Object obj) {
    String beanName = getName();
    BeanMetadata beanData = (BeanMetadata) blueprintContainer.getComponentDefinitionRegistry().getComponentDefinition(beanName);
    List<BeanProcessor> processors = blueprintContainer.getProcessors(BeanProcessor.class);
    //The start link of the chain, that provides the 
    //original, unprocessed bean to the head of the chain.
    BeanProcessor.BeanCreator initialBeanCreator = new BeanProcessor.BeanCreator() {

        public Object getBean() {
            Object obj = getInstance();
            //getinit, getdestroy, addpartial object don't need calling again.
            //however, property injection does.
            setProperties(obj);
            return obj;
        }
    };
    BeanProcessor.BeanCreator currentCreator = initialBeanCreator;
    for (BeanProcessor processor : processors) {
        obj = processor.beforeInit(obj, getName(), currentCreator, beanData);
        currentCreator = new BeanCreatorChain(currentCreator, processor, beanData, beanName, BeanCreatorChain.ChainType.Before);
    }
    return obj;
}

Example 3 with BeanProcessor

use of org.apache.aries.blueprint.BeanProcessor in project aries by apache.

the class BeanRecipe method runBeanProcPostInit.

private Object runBeanProcPostInit(Object obj) {
    String beanName = getName();
    BeanMetadata beanData = (BeanMetadata) blueprintContainer.getComponentDefinitionRegistry().getComponentDefinition(beanName);
    List<BeanProcessor> processors = blueprintContainer.getProcessors(BeanProcessor.class);
    //The start link of the chain, that provides the 
    //original, unprocessed bean to the head of the chain.
    BeanProcessor.BeanCreator initialBeanCreator = new BeanProcessor.BeanCreator() {

        public Object getBean() {
            Object obj = getInstance();
            //getinit, getdestroy, addpartial object don't need calling again.
            //however, property injection does.
            setProperties(obj);
            //as this is the post init chain, new beans need to go thru 
            //the pre-init chain, and then have init called, before 
            //being passed along the post-init chain.
            obj = runBeanProcPreInit(obj);
            runBeanProcInit(getInitMethod(obj), obj);
            return obj;
        }
    };
    BeanProcessor.BeanCreator currentCreator = initialBeanCreator;
    for (BeanProcessor processor : processors) {
        obj = processor.afterInit(obj, getName(), currentCreator, beanData);
        currentCreator = new BeanCreatorChain(currentCreator, processor, beanData, beanName, BeanCreatorChain.ChainType.After);
    }
    return obj;
}