/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file 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 "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.camel.itest.osgi.blueprint;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.apache.camel.CamelContext;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.ProducerTemplate;
import org.apache.camel.component.mock.MockEndpoint;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.ops4j.pax.exam.Option;
import org.ops4j.pax.exam.junit.Configuration;
import org.ops4j.pax.exam.junit.JUnit4TestRunner;
import org.osgi.framework.Bundle;
import org.osgi.framework.Constants;
import static org.ops4j.pax.exam.OptionUtils.combine;
import static org.ops4j.pax.swissbox.tinybundles.core.TinyBundles.newBundle;
/**
* Test cases to ensure that the Blueprint component is correctly setting the Thread's context classloader when starting
* the routes
*
* @version
*/
@RunWith(JUnit4TestRunner.class)
public class CamelBlueprintTcclTest extends OSGiBlueprintTestSupport {
private static final String BUNDLE_SYMBOLICNAME = "CamelBlueprintTcclTestBundle";
@Test
public void testCorrectTcclSetForRoutes() throws Exception {
CamelContext ctx = getOsgiService(CamelContext.class, "(camel.context.symbolicname=CamelBlueprintTcclTestBundle)", 10000);
assertBundleDelegatingClassLoader(ctx.getApplicationContextClassLoader());
ProducerTemplate template = ctx.createProducerTemplate();
MockEndpoint mock = ctx.getEndpoint("mock:result", MockEndpoint.class);
mock.expectedMessageCount(1);
template.sendBody("direct:start", "<hello>world!</hello>");
mock.assertIsSatisfied();
ClassLoader tccl = mock.getExchanges().get(0).getProperty(ThreadContextClassLoaderBean.THREAD_CONTEXT_CLASS_LOADER, ClassLoader.class);
assertNotNull("Exchange property containing TCCL should have been set", tccl);
assertBundleDelegatingClassLoader(tccl);
template.stop();
}
private void assertBundleDelegatingClassLoader(ClassLoader tccl) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException {
// camel-blueprint does not export the BundleDelegatingClassLoader package so we need a little pinch of reflection here
assertTrue("Expected a BundleDelegatingClassLoader instance", tccl.getClass().getName().contains("BundleDelegatingClassLoader"));
Method getBundle = tccl.getClass().getMethod("getBundle");
Bundle bundle = (Bundle) getBundle.invoke(tccl);
assertEquals(BUNDLE_SYMBOLICNAME, bundle.getSymbolicName());
}
@Configuration
public static Option[] configure() throws Exception {
return combine(
getDefaultCamelKarafOptions(),
bundle(newBundle()
.add("OSGI-INF/blueprint/test.xml", OSGiBlueprintTestSupport.class.getResource("blueprint-tccl.xml"))
.add(ThreadContextClassLoaderBean.class)
.set(Constants.BUNDLE_SYMBOLICNAME, BUNDLE_SYMBOLICNAME)
.set(Constants.IMPORT_PACKAGE, "org.apache.camel")
.build()),
// using the features to install the camel components
loadCamelFeatures("camel-blueprint"));
}
/**
* Camel {@link Processor} that injects startup thread context classloader into the exchange for testing purposes
*/
public static final class ThreadContextClassLoaderBean implements Processor {
public static final String THREAD_CONTEXT_CLASS_LOADER = "CamelThreadContextClassLoader";
private final ClassLoader tccl;
public ThreadContextClassLoaderBean() {
tccl = Thread.currentThread().getContextClassLoader();
}
@Override
public void process(Exchange exchange) throws Exception {
exchange.setProperty(THREAD_CONTEXT_CLASS_LOADER, tccl);
}
}
}