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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.handler;
import com.yahoo.jdisc.Request;
import com.yahoo.jdisc.Response;
import com.yahoo.jdisc.application.ContainerBuilder;
import com.yahoo.jdisc.service.CurrentContainer;
import com.yahoo.jdisc.test.TestDriver;
import org.junit.jupiter.api.Test;
import java.net.URI;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertSame;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.fail;
/**
* @author Simon Thoresen Hult
*/
public class ThreadedRequestHandlerTestCase {
@Test
void requireThatNullExecutorThrowsException() {
try {
new ThreadedRequestHandler(null) {
@Override
public void handleRequest(Request request, BufferedContentChannel content, ResponseHandler handler) {
}
};
fail();
} catch (NullPointerException e) {
}
}
@Test
void requireThatAccessorWork() {
MyRequestHandler requestHandler = new MyRequestHandler(newExecutor());
requestHandler.setTimeout(1000, TimeUnit.MILLISECONDS);
assertEquals(1000, requestHandler.getTimeout(TimeUnit.MILLISECONDS));
assertEquals(1, requestHandler.getTimeout(TimeUnit.SECONDS));
}
@Test
void requireThatHandlerSetsRequestTimeout() throws InterruptedException {
MyRequestHandler requestHandler = new MyRequestHandler(newExecutor());
requestHandler.setTimeout(600, TimeUnit.SECONDS);
TestDriver driver = newTestDriver("http://localhost/", requestHandler);
MyResponseHandler responseHandler = new MyResponseHandler();
driver.dispatchRequest("http://localhost/", responseHandler);
requestHandler.entryLatch.countDown();
assertTrue(requestHandler.exitLatch.await(600, TimeUnit.SECONDS));
assertNull(requestHandler.content.read());
assertNotNull(requestHandler.request.getTimeout(TimeUnit.MILLISECONDS));
assertTrue(responseHandler.latch.await(600, TimeUnit.SECONDS));
assertNull(responseHandler.content.read());
assertTrue(driver.close());
}
@Test
void requireThatRequestAndResponseReachHandlers() throws InterruptedException {
MyRequestHandler requestHandler = new MyRequestHandler(newExecutor());
TestDriver driver = newTestDriver("http://localhost/", requestHandler);
MyResponseHandler responseHandler = new MyResponseHandler();
Request request = new Request(driver, URI.create("http://localhost/"));
ContentChannel requestContent = request.connect(responseHandler);
ByteBuffer buf = ByteBuffer.allocate(69);
requestContent.write(buf, null);
requestContent.close(null);
request.release();
requestHandler.entryLatch.countDown();
assertTrue(requestHandler.exitLatch.await(600, TimeUnit.SECONDS));
assertSame(request, requestHandler.request);
assertSame(buf, requestHandler.content.read());
assertNull(requestHandler.content.read());
assertTrue(responseHandler.latch.await(600, TimeUnit.SECONDS));
assertSame(requestHandler.response, responseHandler.response);
assertNull(responseHandler.content.read());
assertTrue(driver.close());
}
@Test
void requireThatNotImplementedHandlerDoesNotPreventShutdown() throws Exception {
TestDriver driver = newTestDriver("http://localhost/", new ThreadedRequestHandler(newExecutor()) {
});
assertEquals(Response.Status.NOT_IMPLEMENTED,
dispatchRequest(driver, "http://localhost/", ByteBuffer.wrap(new byte[]{69}))
.get(600, TimeUnit.SECONDS).getStatus());
assertTrue(driver.close());
}
@Test
void requireThatThreadedRequestHandlerRetainsTheRequestUntilHandlerIsRun() throws Exception {
final TestDriver driver = TestDriver.newSimpleApplicationInstanceWithoutOsgi();
ContainerBuilder builder = driver.newContainerBuilder();
final AtomicInteger baseRetainCount = new AtomicInteger();
builder.serverBindings().bind("http://localhost/base", new AbstractRequestHandler() {
@Override
public ContentChannel handleRequest(Request request, ResponseHandler handler) {
baseRetainCount.set(request.retainCount());
handler.handleResponse(new Response(Response.Status.OK)).close(null);
return null;
}
});
final CountDownLatch entryLatch = new CountDownLatch(1);
final CountDownLatch exitLatch = new CountDownLatch(1);
final AtomicInteger testRetainCount = new AtomicInteger();
builder.serverBindings().bind("http://localhost/test", new ThreadedRequestHandler(newExecutor()) {
@Override
public void handleRequest(Request request, ReadableContentChannel requestContent,
ResponseHandler responseHandler) {
try {
entryLatch.await(600, TimeUnit.SECONDS);
} catch (InterruptedException e) {
return;
}
testRetainCount.set(request.retainCount());
responseHandler.handleResponse(new Response(Response.Status.OK)).close(null);
requestContent.read(); // drain content to call completion handlers
exitLatch.countDown();
}
});
driver.activateContainer(builder);
dispatchRequest(driver, "http://localhost/base");
dispatchRequest(driver, "http://localhost/test");
entryLatch.countDown();
exitLatch.await(600, TimeUnit.SECONDS);
assertEquals(baseRetainCount.get(), testRetainCount.get());
assertTrue(driver.close());
}
private static TestDriver newTestDriver(String uri, RequestHandler requestHandler) {
TestDriver driver = TestDriver.newSimpleApplicationInstanceWithoutOsgi();
ContainerBuilder builder = driver.newContainerBuilder();
builder.serverBindings().bind(uri, requestHandler);
driver.activateContainer(builder);
return driver;
}
private static CompletableFuture<Response> dispatchRequest(final CurrentContainer container, final String uri,
final ByteBuffer... content) {
return new RequestDispatch() {
@Override
protected Request newRequest() {
return new Request(container, URI.create(uri));
}
@Override
protected Iterable<ByteBuffer> requestContent() {
return Arrays.asList(content);
}
}.dispatch();
}
private static Executor newExecutor() {
return Executors.newSingleThreadExecutor();
}
private static class MyRequestHandler extends ThreadedRequestHandler {
final CountDownLatch entryLatch = new CountDownLatch(1);
final CountDownLatch exitLatch = new CountDownLatch(1);
final ReadableContentChannel content = new ReadableContentChannel();
Response response = null;
Request request = null;
MyRequestHandler(Executor executor) {
super(executor);
}
@Override
public void handleRequest(Request request, BufferedContentChannel content, ResponseHandler handler) {
try {
if (!entryLatch.await(600, TimeUnit.SECONDS)) {
return;
}
this.request = request;
content.connectTo(this.content);
response = new Response(Response.Status.OK);
handler.handleResponse(response).close(null);
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
exitLatch.countDown();
}
}
}
private static class MyResponseHandler implements ResponseHandler {
final CountDownLatch latch = new CountDownLatch(1);
final ReadableContentChannel content = new ReadableContentChannel();
Response response = null;
@Override
public ContentChannel handleResponse(Response response) {
this.response = response;
latch.countDown();
BufferedContentChannel content = new BufferedContentChannel();
content.connectTo(this.content);
return content;
}
}
}
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