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//
// ========================================================================
// Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.servlet;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
import javax.servlet.AsyncContext;
import javax.servlet.AsyncEvent;
import javax.servlet.AsyncListener;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.http.HttpStatus;
import org.eclipse.jetty.server.LocalConnector;
import org.eclipse.jetty.server.Server;
import org.junit.After;
import org.junit.Test;
import static org.hamcrest.Matchers.containsString;
import static org.junit.Assert.assertThat;
public class AsyncListenerTest
{
private Server server;
private LocalConnector connector;
public void startServer(ServletContextHandler context) throws Exception
{
server = new Server();
connector = new LocalConnector(server);
connector.setIdleTimeout(20 * 60 * 1000L);
server.addConnector(connector);
server.setHandler(context);
server.start();
}
@After
public void dispose() throws Exception
{
if (server != null)
server.stop();
}
@Test
public void test_StartAsync_Throw_OnError_Dispatch() throws Exception
{
test_StartAsync_Throw_OnError(event -> event.getAsyncContext().dispatch("/dispatch"));
String httpResponse = connector.getResponses("" +
"GET /ctx/path HTTP/1.1\r\n" +
"Host: localhost\r\n" +
"Connection: close\r\n" +
"\r\n");
assertThat(httpResponse, containsString("HTTP/1.1 200 "));
}
@Test
public void test_StartAsync_Throw_OnError_Complete() throws Exception
{
test_StartAsync_Throw_OnError(event ->
{
HttpServletResponse response = (HttpServletResponse)event.getAsyncContext().getResponse();
response.setStatus(HttpStatus.INTERNAL_SERVER_ERROR_500);
ServletOutputStream output = response.getOutputStream();
output.println(event.getThrowable().getClass().getName());
output.println("COMPLETE");
event.getAsyncContext().complete();
});
String httpResponse = connector.getResponses("" +
"GET /ctx/path HTTP/1.1\r\n" +
"Host: localhost\r\n" +
"Connection: close\r\n" +
"\r\n");
assertThat(httpResponse, containsString("HTTP/1.1 500 "));
assertThat(httpResponse, containsString(TestRuntimeException.class.getName()));
assertThat(httpResponse, containsString("COMPLETE"));
}
@Test
public void test_StartAsync_Throw_OnError_Throw() throws Exception
{
test_StartAsync_Throw_OnError(event ->
{
throw new IOException();
});
String httpResponse = connector.getResponses("" +
"GET /ctx/path HTTP/1.1\r\n" +
"Host: localhost\r\n" +
"Connection: close\r\n" +
"\r\n");
assertThat(httpResponse, containsString("HTTP/1.1 500 "));
assertThat(httpResponse, containsString(TestRuntimeException.class.getName()));
}
@Test
public void test_StartAsync_Throw_OnError_Nothing() throws Exception
{
test_StartAsync_Throw_OnError(event -> {});
String httpResponse = connector.getResponses("" +
"GET /ctx/path HTTP/1.1\r\n" +
"Host: localhost\r\n" +
"Connection: close\r\n" +
"\r\n");
assertThat(httpResponse, containsString("HTTP/1.1 500 "));
assertThat(httpResponse, containsString(TestRuntimeException.class.getName()));
}
@Test
public void test_StartAsync_Throw_OnError_SendError() throws Exception
{
test_StartAsync_Throw_OnError(event ->
{
HttpServletResponse response = (HttpServletResponse)event.getAsyncContext().getResponse();
response.sendError(HttpStatus.BAD_GATEWAY_502);
});
String httpResponse = connector.getResponses("" +
"GET /ctx/path HTTP/1.1\r\n" +
"Host: localhost\r\n" +
"Connection: close\r\n" +
"\r\n");
assertThat(httpResponse, containsString("HTTP/1.1 502 "));
assertThat(httpResponse, containsString(TestRuntimeException.class.getName()));
}
@Test
public void test_StartAsync_Throw_OnError_SendError_CustomErrorPage() throws Exception
{
test_StartAsync_Throw_OnError(event ->
{
HttpServletResponse response = (HttpServletResponse)event.getAsyncContext().getResponse();
response.sendError(HttpStatus.BAD_GATEWAY_502);
});
// Add a custom error page.
ErrorPageErrorHandler errorHandler = new ErrorPageErrorHandler();
errorHandler.setServer(server);
errorHandler.addErrorPage(HttpStatus.BAD_GATEWAY_502, "/error");
server.addManaged(errorHandler);
String httpResponse = connector.getResponses("" +
"GET /ctx/path HTTP/1.1\r\n" +
"Host: localhost\r\n" +
"Connection: close\r\n" +
"\r\n", 10, TimeUnit.MINUTES);
assertThat(httpResponse, containsString("HTTP/1.1 502 "));
assertThat(httpResponse, containsString("CUSTOM"));
}
private void test_StartAsync_Throw_OnError(IOConsumer<AsyncEvent> consumer) throws Exception
{
ServletContextHandler context = new ServletContextHandler();
context.setContextPath("/ctx");
context.addServlet(new ServletHolder(new HttpServlet()
{
@Override
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
AsyncContext asyncContext = request.startAsync();
asyncContext.setTimeout(0);
asyncContext.addListener(new AsyncListenerAdapter()
{
@Override
public void onError(AsyncEvent event) throws IOException
{
consumer.accept(event);
}
});
throw new TestRuntimeException();
}
}), "/path/*");
context.addServlet(new ServletHolder(new HttpServlet()
{
@Override
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
response.setStatus(HttpStatus.OK_200);
}
}), "/dispatch/*");
context.addServlet(new ServletHolder(new HttpServlet()
{
@Override
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
response.getOutputStream().print("CUSTOM");
}
}), "/error/*");
startServer(context);
}
@Test
public void test_StartAsync_OnTimeout_Dispatch() throws Exception
{
test_StartAsync_OnTimeout(500, event -> event.getAsyncContext().dispatch("/dispatch"));
String httpResponse = connector.getResponses("" +
"GET / HTTP/1.1\r\n" +
"Host: localhost\r\n" +
"Connection: close\r\n" +
"\r\n");
assertThat(httpResponse, containsString("HTTP/1.1 200 "));
}
@Test
public void test_StartAsync_OnTimeout_Complete() throws Exception
{
test_StartAsync_OnTimeout(500, event ->
{
HttpServletResponse response = (HttpServletResponse)event.getAsyncContext().getResponse();
response.setStatus(HttpStatus.OK_200);
ServletOutputStream output = response.getOutputStream();
output.println("COMPLETE");
event.getAsyncContext().complete();
});
String httpResponse = connector.getResponses("" +
"GET / HTTP/1.1\r\n" +
"Host: localhost\r\n" +
"Connection: close\r\n" +
"\r\n");
assertThat(httpResponse, containsString("HTTP/1.1 200 "));
assertThat(httpResponse, containsString("COMPLETE"));
}
@Test
public void test_StartAsync_OnTimeout_Throw() throws Exception
{
test_StartAsync_OnTimeout(500, event ->
{
throw new TestRuntimeException();
});
String httpResponse = connector.getResponses("" +
"GET / HTTP/1.1\r\n" +
"Host: localhost\r\n" +
"Connection: close\r\n" +
"\r\n");
assertThat(httpResponse, containsString("HTTP/1.1 500 "));
assertThat(httpResponse, containsString(TestRuntimeException.class.getName()));
}
@Test
public void test_StartAsync_OnTimeout_Nothing() throws Exception
{
test_StartAsync_OnTimeout(500, event -> {
});
String httpResponse = connector.getResponses("" +
"GET / HTTP/1.1\r\n" +
"Host: localhost\r\n" +
"Connection: close\r\n" +
"\r\n");
assertThat(httpResponse, containsString("HTTP/1.1 500 "));
}
@Test
public void test_StartAsync_OnTimeout_SendError() throws Exception
{
test_StartAsync_OnTimeout(500, event ->
{
HttpServletResponse response = (HttpServletResponse)event.getAsyncContext().getResponse();
response.sendError(HttpStatus.BAD_GATEWAY_502);
});
String httpResponse = connector.getResponses("" +
"GET / HTTP/1.1\r\n" +
"Host: localhost\r\n" +
"Connection: close\r\n" +
"\r\n");
assertThat(httpResponse, containsString("HTTP/1.1 502 "));
}
@Test
public void test_StartAsync_OnTimeout_SendError_CustomErrorPage() throws Exception
{
test_StartAsync_OnTimeout(500, event ->
{
AsyncContext asyncContext = event.getAsyncContext();
HttpServletResponse response = (HttpServletResponse)asyncContext.getResponse();
response.sendError(HttpStatus.BAD_GATEWAY_502);
asyncContext.complete();
});
// Add a custom error page.
ErrorPageErrorHandler errorHandler = new ErrorPageErrorHandler();
errorHandler.setServer(server);
errorHandler.addErrorPage(HttpStatus.BAD_GATEWAY_502, "/error");
server.addManaged(errorHandler);
String httpResponse = connector.getResponses("" +
"GET / HTTP/1.1\r\n" +
"Host: localhost\r\n" +
"Connection: close\r\n" +
"\r\n");
assertThat(httpResponse, containsString("HTTP/1.1 502 "));
assertThat(httpResponse, containsString("CUSTOM"));
}
private void test_StartAsync_OnTimeout(long timeout, IOConsumer<AsyncEvent> consumer) throws Exception
{
ServletContextHandler context = new ServletContextHandler();
context.addServlet(new ServletHolder(new HttpServlet()
{
@Override
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
AsyncContext asyncContext = request.startAsync();
asyncContext.setTimeout(timeout);
asyncContext.addListener(new AsyncListenerAdapter()
{
@Override
public void onTimeout(AsyncEvent event) throws IOException
{
consumer.accept(event);
}
});
}
}), "/*");
context.addServlet(new ServletHolder(new HttpServlet()
{
@Override
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
response.setStatus(HttpStatus.OK_200);
}
}), "/dispatch/*");
context.addServlet(new ServletHolder(new HttpServlet()
{
@Override
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
response.getOutputStream().print("CUSTOM");
}
}), "/error/*");
startServer(context);
}
@Test
public void test_StartAsync_OnComplete_Throw() throws Exception
{
ServletContextHandler context = new ServletContextHandler();
context.addServlet(new ServletHolder(new HttpServlet()
{
@Override
protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
AsyncContext asyncContext = request.startAsync();
asyncContext.setTimeout(0);
asyncContext.addListener(new AsyncListenerAdapter()
{
@Override
public void onComplete(AsyncEvent event) throws IOException
{
throw new TestRuntimeException();
}
});
response.getOutputStream().print("DATA");
asyncContext.complete();
}
}), "/*");
startServer(context);
String httpResponse = connector.getResponses("" +
"GET / HTTP/1.1\r\n" +
"Host: localhost\r\n" +
"Connection: close\r\n" +
"\r\n");
assertThat(httpResponse, containsString("HTTP/1.1 200 "));
assertThat(httpResponse, containsString("DATA"));
}
// Unique named RuntimeException to help during debugging / assertions.
public static class TestRuntimeException extends RuntimeException
{
}
public static class AsyncListenerAdapter implements AsyncListener
{
@Override
public void onComplete(AsyncEvent event) throws IOException
{
}
@Override
public void onTimeout(AsyncEvent event) throws IOException
{
}
@Override
public void onError(AsyncEvent event) throws IOException
{
}
@Override
public void onStartAsync(AsyncEvent event) throws IOException
{
}
}
@FunctionalInterface
private interface IOConsumer<T>
{
void accept(T t) throws IOException;
}
}
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