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package org.glassfish.jersey.tests.integration.jersey1107;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import javax.ws.rs.core.Response;
import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.test.JerseyTest;
import org.glassfish.jersey.test.external.ExternalTestContainerFactory;
import org.glassfish.jersey.test.spi.TestContainerException;
import org.glassfish.jersey.test.spi.TestContainerFactory;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* Tests for JERSEY-1107: Thread gets stuck if no MessageBodyWriter is found in ApplicationHandler#writeResponse.
* <p/>
* If an exception (e.g. NPE caused by non-existent MessageBodyWriter) is thrown in ApplicationHandler#writeResponse before
* headers and response status are written by ContainerResponseWriter#writeResponseStatusAndHeaders then the
* ContainerResponseWriter#commit in the finally clause will stuck the thread.
* <p/>
* The purpose of the tests below is to show that a response is returned from the server and none of the threads gets stuck.
*
* @author Michal Gajdos
*/
public class ApplicationHandlerITCase extends JerseyTest {
@Override
protected ResourceConfig configure() {
return new ResourceConfig().registerInstances(new Jersey1107());
}
@Override
protected TestContainerFactory getTestContainerFactory() throws TestContainerException {
return new ExternalTestContainerFactory();
}
/**
* Checks if a thread gets stuck when an {@code IOException} is thrown from the {@code
* MessageBodyWriter#writeTo}.
*/
@Test
public void testIOExceptionInWriteResponseMethod() throws Exception {
_testExceptionInWriteResponseMethod("ioe", "exception/ioexception", Response.Status.INTERNAL_SERVER_ERROR);
}
/**
* Checks if a thread gets stuck when an {@code WebApplicationException} is thrown from the {@code
* MessageBodyWriter#writeTo}.
*/
@Test
public void testWebApplicationExceptionInWriteResponseMethod() throws Exception {
_testExceptionInWriteResponseMethod("wae", "exception/webapplicationexception", Response.Status.INTERNAL_SERVER_ERROR);
}
/**
* Checks if a thread gets stuck when no {@code MessageBodyWriter} is found and therefore an {@code NPE} is thrown
* when trying to invoke {@code MessageBodyWriter#writeTo} on an empty object.
*/
@Test
public void testNullPointerExceptionInWriteResponseMethod() throws Exception {
_testExceptionInWriteResponseMethod("npe", "exception/nullpointerexception", Response.Status.INTERNAL_SERVER_ERROR);
}
/**
* Creates a request to the server (with the whole process time set to the maximum of 5 seconds) for the given {@code path}
* and {@code mediaType} that should result in the {@code expectedResponse}.
*/
private void _testExceptionInWriteResponseMethod(final String path, final String mediaType,
final Response.Status expectedResponse) throws Exception {
// Executor.
final ExecutorService executor = Executors.newSingleThreadExecutor();
final Future<Response> responseFuture = executor.submit(new Callable<Response>() {
@Override
public Response call() throws Exception {
return target().path(path).request(mediaType).get();
}
});
executor.shutdown();
final boolean inTime = executor.awaitTermination(5000, TimeUnit.MILLISECONDS);
// Asserts.
assertTrue(inTime);
// Response.
final Response response = responseFuture.get();
assertEquals(expectedResponse.getStatusCode(), response.getStatusInfo().getStatusCode());
}
}