416 lines
18 KiB
Java
416 lines
18 KiB
Java
/*
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* Copyright (c) 2022, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8277969 8299338
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* @summary Test for edge case where the executor is not accepting
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* new tasks while the client is still running
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* @library /test/lib /test/jdk/java/net/httpclient/lib
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* @build jdk.httpclient.test.lib.http2.Http2TestServer jdk.test.lib.net.SimpleSSLContext
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* ReferenceTracker
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* @run testng/othervm
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* -Djdk.internal.httpclient.debug=true
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* -Djdk.httpclient.HttpClient.log=trace,headers,requests
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* AsyncExecutorShutdown
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*/
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// -Djdk.internal.httpclient.debug=true
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.UncheckedIOException;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.URI;
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import java.net.http.HttpClient;
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import java.net.http.HttpClient.Redirect;
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import java.net.http.HttpRequest;
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import java.net.http.HttpResponse;
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import java.net.http.HttpResponse.BodyHandlers;
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import java.nio.channels.ClosedChannelException;
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import java.nio.charset.StandardCharsets;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Random;
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.CompletionException;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.RejectedExecutionException;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.atomic.AtomicLong;
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import java.util.function.Function;
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import jdk.httpclient.test.lib.common.HttpServerAdapters;
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import jdk.httpclient.test.lib.http2.Http2TestServer;
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import javax.net.ssl.SSLContext;
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import javax.net.ssl.SSLHandshakeException;
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import com.sun.net.httpserver.HttpServer;
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import com.sun.net.httpserver.HttpsConfigurator;
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import com.sun.net.httpserver.HttpsServer;
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import jdk.test.lib.RandomFactory;
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import jdk.test.lib.net.SimpleSSLContext;
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import org.testng.annotations.AfterTest;
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import org.testng.annotations.BeforeTest;
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import org.testng.annotations.DataProvider;
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import org.testng.annotations.Test;
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import static java.lang.System.out;
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import static java.net.http.HttpClient.Builder.NO_PROXY;
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import static java.net.http.HttpClient.Version.HTTP_1_1;
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import static java.net.http.HttpClient.Version.HTTP_2;
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import static java.nio.charset.StandardCharsets.UTF_8;
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import static org.testng.Assert.assertEquals;
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import static org.testng.Assert.assertNotNull;
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import static org.testng.Assert.fail;
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public class AsyncExecutorShutdown implements HttpServerAdapters {
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static {
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HttpServerAdapters.enableServerLogging();
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}
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static final Random RANDOM = RandomFactory.getRandom();
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SSLContext sslContext;
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HttpTestServer httpTestServer; // HTTP/1.1 [ 4 servers ]
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HttpTestServer httpsTestServer; // HTTPS/1.1
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HttpTestServer http2TestServer; // HTTP/2 ( h2c )
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HttpTestServer https2TestServer; // HTTP/2 ( h2 )
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String httpURI;
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String httpsURI;
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String http2URI;
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String https2URI;
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static final String MESSAGE = "AsyncExecutorShutdown message body";
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static final int ITERATIONS = 3;
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@DataProvider(name = "positive")
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public Object[][] positive() {
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return new Object[][] {
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{ httpURI, },
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{ httpsURI, },
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{ http2URI, },
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{ https2URI, },
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};
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}
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static final AtomicLong requestCounter = new AtomicLong();
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final ReferenceTracker TRACKER = ReferenceTracker.INSTANCE;
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static Throwable getCause(Throwable t) {
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while (t instanceof CompletionException || t instanceof ExecutionException) {
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t = t.getCause();
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}
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return t;
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}
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static String readBody(InputStream in) {
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try {
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return new String(in.readAllBytes(), StandardCharsets.UTF_8);
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} catch (IOException io) {
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throw new UncheckedIOException(io);
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}
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}
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static void checkCause(String what, Throwable cause) {
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Throwable t = cause;
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Throwable accepted = null;
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while (t != null) {
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out.println(what + ": checking " + t);
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if (t instanceof RejectedExecutionException) {
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out.println(what + ": Got expected RejectedExecutionException in cause: " + t);
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return;
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} else if (t instanceof ClosedChannelException) {
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out.println(what + ": Accepting ClosedChannelException as a valid cause: " + t);
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accepted = t;
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}
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t = t.getCause();
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}
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if (accepted != null) {
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out.println(what + ": Didn't find expected RejectedExecutionException, " +
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"but accepting " + accepted.getClass().getSimpleName()
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+ " as a valid cause: " + accepted);
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return;
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}
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throw new AssertionError(what + ": Unexpected exception: " + cause, cause);
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}
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@Test(dataProvider = "positive")
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void testConcurrent(String uriString) throws Exception {
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out.printf("%n---- starting (%s) ----%n", uriString);
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ExecutorService executorService = Executors.newCachedThreadPool();
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ExecutorService readerService = Executors.newCachedThreadPool();
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HttpClient client = HttpClient.newBuilder()
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.proxy(NO_PROXY)
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.followRedirects(Redirect.ALWAYS)
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.executor(executorService)
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.sslContext(sslContext)
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.build();
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TRACKER.track(client);
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assert client.executor().isPresent();
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int step = RANDOM.nextInt(ITERATIONS);
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try {
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List<CompletableFuture<String>> bodies = new ArrayList<>();
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for (int i = 0; i < ITERATIONS; i++) {
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URI uri = URI.create(uriString + "/concurrent/iteration-" + i);
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HttpRequest request = HttpRequest.newBuilder(uri)
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.header("X-uuid", "uuid-" + requestCounter.incrementAndGet())
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.build();
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out.printf("Iteration %d request: %s%n", i, request.uri());
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CompletableFuture<HttpResponse<InputStream>> responseCF;
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CompletableFuture<String> bodyCF;
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final int si = i;
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try {
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responseCF = client.sendAsync(request, BodyHandlers.ofInputStream())
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.thenApply((response) -> {
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out.println(si + ": Got response: " + response);
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assertEquals(response.statusCode(), 200);
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return response;
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});
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bodyCF = responseCF.thenApplyAsync(HttpResponse::body, readerService)
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.thenApply(AsyncExecutorShutdown::readBody)
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.thenApply((s) -> { assertEquals(s, MESSAGE); return s;});
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} catch (RejectedExecutionException x) {
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out.println(i + ": Got expected exception: " + x);
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continue;
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}
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long sleep = RANDOM.nextLong(5);
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if (sleep > 0) {
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out.printf("%d: sleeping %d ms%n", i, sleep);
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Thread.sleep(sleep);
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}
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if (i == step) {
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out.printf("%d: shutting down executor now%n", i, sleep);
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executorService.shutdownNow();
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}
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var cf = bodyCF.exceptionally((t) -> {
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Throwable cause = getCause(t);
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out.println(si + ": Got expected exception: " + cause);
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if (UncheckedIOException.class.isAssignableFrom(cause.getClass())) {
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if (cause.getCause() != null) {
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out.println(si + ": Got expected exception: " + cause);
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cause = cause.getCause();
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}
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}
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checkCause(String.valueOf(si), cause);
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return null;
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});
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bodies.add(cf);
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}
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CompletableFuture.allOf(bodies.toArray(new CompletableFuture<?>[0])).get();
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} finally {
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client = null;
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executorService.awaitTermination(2000, TimeUnit.MILLISECONDS);
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readerService.shutdown();
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readerService.awaitTermination(2000, TimeUnit.MILLISECONDS);
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}
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}
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@Test(dataProvider = "positive")
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void testSequential(String uriString) throws Exception {
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out.printf("%n---- starting (%s) ----%n", uriString);
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ExecutorService executorService = Executors.newCachedThreadPool();
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ExecutorService readerService = Executors.newCachedThreadPool();
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HttpClient client = HttpClient.newBuilder()
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.proxy(NO_PROXY)
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.followRedirects(Redirect.ALWAYS)
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.executor(executorService)
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.sslContext(sslContext)
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.build();
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TRACKER.track(client);
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assert client.executor().isPresent();
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int step = RANDOM.nextInt(ITERATIONS);
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out.printf("will shutdown executor in step %d%n", step);
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try {
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for (int i = 0; i < ITERATIONS; i++) {
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URI uri = URI.create(uriString + "/sequential/iteration-" + i);
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HttpRequest request = HttpRequest.newBuilder(uri)
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.header("X-uuid", "uuid-" + requestCounter.incrementAndGet())
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.build();
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out.printf("Iteration %d request: %s%n", i, request.uri());
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final int si = i;
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CompletableFuture<HttpResponse<InputStream>> responseCF;
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CompletableFuture<String> bodyCF;
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try {
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responseCF = client.sendAsync(request, BodyHandlers.ofInputStream())
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.thenApply((response) -> {
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out.println(si + ": Got response: " + response);
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assertEquals(response.statusCode(), 200);
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return response;
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});
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bodyCF = responseCF.thenApplyAsync(HttpResponse::body, readerService)
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.thenApply(AsyncExecutorShutdown::readBody)
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.thenApply((s) -> {assertEquals(s, MESSAGE); return s;})
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.thenApply((s) -> {out.println(si + ": Got body: " + s); return s;});
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} catch (RejectedExecutionException x) {
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out.println(i + ": Got expected exception: " + x);
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continue;
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}
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long sleep = RANDOM.nextLong(5);
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if (sleep > 0) {
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out.printf("%d: sleeping %d ms%n", i, sleep);
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Thread.sleep(sleep);
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}
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if (i == step) {
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out.printf("%d: shutting down executor now%n", i, sleep);
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executorService.shutdownNow();
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}
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bodyCF.handle((r,t) -> {
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if (t != null) {
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try {
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Throwable cause = getCause(t);
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out.println(si + ": Got expected exception: " + cause);
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if (UncheckedIOException.class.isAssignableFrom(cause.getClass())) {
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if (cause.getCause() != null) {
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out.println(si + ": Got expected exception: " + cause);
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cause = cause.getCause();
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}
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}
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checkCause(String.valueOf(si), cause);
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} catch (Throwable ase) {
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return CompletableFuture.failedFuture(ase);
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}
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return CompletableFuture.completedFuture(null);
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} else {
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return CompletableFuture.completedFuture(r);
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}
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}).thenCompose((c) -> c).get();
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}
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} finally {
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client = null;
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executorService.awaitTermination(2000, TimeUnit.MILLISECONDS);
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readerService.shutdown();
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readerService.awaitTermination(2000, TimeUnit.MILLISECONDS);
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}
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}
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// -- Infrastructure
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@BeforeTest
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public void setup() throws Exception {
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out.println("\n**** Setup ****\n");
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sslContext = new SimpleSSLContext().get();
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if (sslContext == null)
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throw new AssertionError("Unexpected null sslContext");
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httpTestServer = HttpTestServer.create(HTTP_1_1);
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httpTestServer.addHandler(new ServerRequestHandler(), "/http1/exec/");
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httpURI = "http://" + httpTestServer.serverAuthority() + "/http1/exec/retry";
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httpsTestServer = HttpTestServer.create(HTTP_1_1, sslContext);
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httpsTestServer.addHandler(new ServerRequestHandler(),"/https1/exec/");
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httpsURI = "https://" + httpsTestServer.serverAuthority() + "/https1/exec/retry";
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http2TestServer = HttpTestServer.create(HTTP_2);
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http2TestServer.addHandler(new ServerRequestHandler(), "/http2/exec/");
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http2URI = "http://" + http2TestServer.serverAuthority() + "/http2/exec/retry";
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https2TestServer = HttpTestServer.create(HTTP_2, sslContext);
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https2TestServer.addHandler(new ServerRequestHandler(), "/https2/exec/");
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https2URI = "https://" + https2TestServer.serverAuthority() + "/https2/exec/retry";
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httpTestServer.start();
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httpsTestServer.start();
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http2TestServer.start();
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https2TestServer.start();
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}
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@AfterTest
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public void teardown() throws Exception {
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Thread.sleep(100);
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AssertionError fail = TRACKER.checkShutdown(5000);
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try {
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httpTestServer.stop();
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httpsTestServer.stop();
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http2TestServer.stop();
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https2TestServer.stop();
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} finally {
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if (fail != null) throw fail;
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}
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}
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static class ServerRequestHandler implements HttpTestHandler {
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ConcurrentHashMap<String,String> closedRequests = new ConcurrentHashMap<>();
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@java.lang.Override
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public void handle(HttpTestExchange t) throws IOException {
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out.println("ServerRequestHandler for: " + t.getRequestURI());
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List<String> uuids = t.getRequestHeaders().get("X-uuid");
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if (uuids == null || uuids.size() != 1) {
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readAllRequestData(t);
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try (OutputStream os = t.getResponseBody()) {
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String msg = "Incorrect uuid header values:[" + uuids + "]";
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(new RuntimeException(msg)).printStackTrace();
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t.sendResponseHeaders(500, -1);
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os.write(msg.getBytes(UTF_8));
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}
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return;
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}
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String uuid = uuids.get(0);
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// retrying
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if (closedRequests.putIfAbsent(uuid, t.getRequestURI().toString()) == null) {
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if (t.getExchangeVersion() == HTTP_1_1) {
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// Throwing an exception here only causes a retry
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// with HTTP_1_1 - where it forces the server to close
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// the connection.
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// For HTTP/2 then throwing an IOE would cause the server
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// to close the stream, and throwing anything else would
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// cause it to close the connection, but neither would
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// cause the client to retry.
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// So we simply do not try to retry with HTTP/2.
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out.println("Server will close connection, client will retry: "
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+ t.getRequestURI().toString());
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throw new IOException("Closing on first request");
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}
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}
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// not retrying
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readAllRequestData(t);
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try (OutputStream os = t.getResponseBody()) {
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byte[] bytes = MESSAGE.getBytes(UTF_8);
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t.sendResponseHeaders(200, bytes.length);
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for (int i=0; i<bytes.length; i++) {
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os.write(bytes, i, 1);
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os.flush();
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try {
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Thread.sleep(RANDOM.nextInt(5));
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} catch (InterruptedException x) { }
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}
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}
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closedRequests.remove(uuid);
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}
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}
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static void readAllRequestData(HttpTestExchange t) throws IOException {
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try (InputStream is = t.getRequestBody()) {
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is.readAllBytes();
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}
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}
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}
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