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package org.glassfish.jersey.tests.e2e.client.httpurlconnector;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.logging.Logger;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.client.AsyncInvoker;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.Entity;
import javax.ws.rs.container.AsyncResponse;
import javax.ws.rs.container.Suspended;
import javax.ws.rs.container.TimeoutHandler;
import javax.ws.rs.core.Application;
import javax.ws.rs.core.Response;
import org.glassfish.jersey.client.ClientConfig;
import org.glassfish.jersey.client.ClientProperties;
import org.glassfish.jersey.client.HttpUrlConnectorProvider;
import org.glassfish.jersey.filter.LoggingFilter;
import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.test.JerseyTest;
import org.hamcrest.Matchers;
import org.junit.Test;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.lessThanOrEqualTo;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
/**
* Asynchronous connector test.
*
* @author Arul Dhesiaseelan (aruld at acm.org)
* @author Marek Potociar (marek.potociar at oracle.com)
*/
public class AsyncTest extends JerseyTest {
private static final Logger LOGGER = Logger.getLogger(AsyncTest.class.getName());
private static final String PATH = "async";
/**
* Asynchronous test resource.
*/
@Path(PATH)
public static class AsyncResource {
/**
* Typical long-running operation duration.
*/
public static final long OPERATION_DURATION = 1000;
/**
* Long-running asynchronous post.
*
* @param asyncResponse async response.
* @param id post request id (received as request payload).
*/
@POST
public void asyncPost(@Suspended final AsyncResponse asyncResponse, final String id) {
LOGGER.info("Long running post operation called with id " + id + " on thread " + Thread.currentThread().getName());
new Thread(new Runnable() {
@Override
public void run() {
final String result = veryExpensiveOperation();
asyncResponse.resume(result);
}
private String veryExpensiveOperation() {
// ... very expensive operation that typically finishes within 1 seconds, simulated using sleep()
try {
Thread.sleep(OPERATION_DURATION);
return "DONE-" + id;
} catch (final InterruptedException e) {
Thread.currentThread().interrupt();
return "INTERRUPTED-" + id;
} finally {
LOGGER.info("Long running post operation finished on thread " + Thread.currentThread().getName());
}
}
}, "async-post-runner-" + id).start();
}
/**
* Long-running async get request that times out.
*
* @param asyncResponse async response.
*/
@GET
@Path("timeout")
public void asyncGetWithTimeout(@Suspended final AsyncResponse asyncResponse) {
LOGGER.info("Async long-running get with timeout called on thread " + Thread.currentThread().getName());
asyncResponse.setTimeoutHandler(new TimeoutHandler() {
@Override
public void handleTimeout(final AsyncResponse asyncResponse) {
asyncResponse.resume(Response.status(Response.Status.SERVICE_UNAVAILABLE)
.entity("Operation time out.").build());
}
});
asyncResponse.setTimeout(1, TimeUnit.SECONDS);
new Thread(new Runnable() {
@Override
public void run() {
final String result = veryExpensiveOperation();
asyncResponse.resume(result);
}
private String veryExpensiveOperation() {
// very expensive operation that typically finishes within 1 second but can take up to 5 seconds,
// simulated using sleep()
try {
Thread.sleep(5 * OPERATION_DURATION);
return "DONE";
} catch (final InterruptedException e) {
Thread.currentThread().interrupt();
return "INTERRUPTED";
} finally {
LOGGER.info("Async long-running get with timeout finished on thread " + Thread.currentThread().getName());
}
}
}).start();
}
}
@Override
protected Application configure() {
return new ResourceConfig(AsyncResource.class, ThreadPoolResource.class)
.register(new LoggingFilter(LOGGER, true));
}
@Override
protected void configureClient(final ClientConfig config) {
config.register(new LoggingFilter(LOGGER, true));
config.connectorProvider(new HttpUrlConnectorProvider());
}
/**
* Test asynchronous POST.
*
* Send 3 async POST requests and wait to receive the responses. Check the response content and
* assert that the operation did not take more than twice as long as a single long operation duration
* (this ensures async request execution).
*
* @throws Exception in case of a test error.
*/
@Test
public void testAsyncPost() throws Exception {
final long tic = System.currentTimeMillis();
// Submit requests asynchronously.
final Future<Response> rf1 = target(PATH).request().async().post(Entity.text("1"));
final Future<Response> rf2 = target(PATH).request().async().post(Entity.text("2"));
final Future<Response> rf3 = target(PATH).request().async().post(Entity.text("3"));
// get() waits for the response
final String r1 = rf1.get().readEntity(String.class);
final String r2 = rf2.get().readEntity(String.class);
final String r3 = rf3.get().readEntity(String.class);
final long toc = System.currentTimeMillis();
assertEquals("DONE-1", r1);
assertEquals("DONE-2", r2);
assertEquals("DONE-3", r3);
assertThat("Async processing took too long.", toc - tic, Matchers.lessThan(3 * AsyncResource.OPERATION_DURATION));
}
/**
* Test accessing an operation that times out on the server.
*
* @throws Exception in case of a test error.
*/
@Test
public void testAsyncGetWithTimeout() throws Exception {
final Future<Response> responseFuture = target(PATH).path("timeout").request().async().get();
// Request is being processed asynchronously.
final Response response = responseFuture.get();
// get() waits for the response
assertEquals(503, response.getStatus());
assertEquals("Operation time out.", response.readEntity(String.class));
}
@Path("/threadpool")
public static class ThreadPoolResource {
@GET
public String get() {
sleep();
return "GET";
}
private void sleep() {
try {
Thread.sleep(100);
} catch (final InterruptedException ex) {
// NOOP.
}
}
}
@Test
public void testClientThreadPool() throws Exception {
final AsyncInvoker invoker = ClientBuilder
.newClient(new ClientConfig().property(ClientProperties.ASYNC_THREADPOOL_SIZE, 9))
.target(getBaseUri())
.path("threadpool")
.request()
.async();
final CountDownLatch latch = new CountDownLatch(100);
final int threadCount = Thread.activeCount();
final List<Thread> threads = new ArrayList<Thread>(20);
for (int i = 0; i < 20; i++) {
threads.add(new Thread(new Runnable() {
@Override
public void run() throws RuntimeException {
for (int i = 0; i < 5; i++) {
try {
assertThat(invoker.get().get().readEntity(String.class), equalTo("GET"));
assertThat(Thread.activeCount() - threadCount - 20, lessThanOrEqualTo(10));
latch.countDown();
} catch (final InterruptedException e) {
fail();
} catch (final ExecutionException e) {
fail();
}
}
}
}));
}
for (final Thread thread : threads) {
thread.start();
}
assertTrue(latch.await(5 * getAsyncTimeoutMultiplier(), TimeUnit.SECONDS));
}
}