--- /dev/null 2017-10-28 22:49:55.551349757 -0700 +++ new/test/jdk/java/net/httpclient/HttpResponseInputStreamTest.java 2017-11-30 04:05:58.363487497 -0800 @@ -0,0 +1,245 @@ +/* + * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +import jdk.incubator.http.HttpResponse; +import jdk.incubator.http.HttpResponse.BodySubscriber; + +import java.io.IOException; +import java.io.InputStream; +import java.io.UncheckedIOException; +import java.nio.ByteBuffer; +import java.util.List; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.CompletionException; +import java.util.concurrent.CompletionStage; +import java.util.concurrent.CountDownLatch; +import java.util.concurrent.ExecutionException; +import java.util.concurrent.Flow; +import java.util.concurrent.atomic.AtomicBoolean; +import java.util.concurrent.atomic.AtomicLong; + +import org.testng.annotations.Test; + +/* + * @test + * @summary Simple smoke test for BodySubscriber.asInputStream(); + * @run testng/othervm HttpResponseInputStreamTest + * @author daniel fuchs + */ +public class HttpResponseInputStreamTest { + + static class TestException extends IOException {} + + public static void main(String[] args) throws InterruptedException, ExecutionException { + testOnError(); + } + + /** + * Tests that a client will be unblocked and will throw an IOException + * if an error occurs while the client is waiting for more data. + * @throws InterruptedException + * @throws ExecutionException + */ + @Test + public static void testOnError() throws InterruptedException, ExecutionException { + CountDownLatch latch = new CountDownLatch(1); + BodySubscriber isb = BodySubscriber.asInputStream(); + ErrorTestSubscription s = new ErrorTestSubscription(isb); + CompletionStage cs = + isb.getBody().thenApplyAsync((is) -> s.accept(latch, is)); + latch.await(); + isb.onSubscribe(s); + s.t.join(); + Throwable result = cs.toCompletableFuture().get(); + Throwable t = result; + if (!(t instanceof IOException)) { + throw new RuntimeException("Failed to receive excpected IOException", result); + } else { + System.out.println("Got expected exception: " + t); + } + while (t != null) { + if (t instanceof TestException) break; + t = t.getCause(); + } + if (t instanceof TestException) { + System.out.println("Got expected cause: " + t); + } else { + throw new RuntimeException("Failed to receive excpected TestException", result); + } + } + + static class ErrorTestSubscription implements Flow.Subscription { + final BodySubscriber isb; + final Thread t = new Thread() { + @Override + public void run() { + try { + // Give time to + System.out.println("waiting..."); + Thread.sleep(1000); + } catch (InterruptedException e) { + + } + System.out.println("Calling onError..."); + isb.onError(new TestException()); + } + }; + + ErrorTestSubscription(BodySubscriber isb) { + this.isb = isb; + } + + int requested = 0; + + @Override + public void request(long n) { + System.out.println("Got request: " + n); + if (requested == 0 && n > 0) { + //isb.onNext(List.of(java.nio.ByteBuffer.wrap(new byte[] {0x01}))); + requested += n; + t.start(); + } + } + + @Override + public void cancel() { + } + + public Throwable accept(CountDownLatch latch, InputStream is) { + System.out.println("got " + is); + try { + latch.countDown(); + System.out.println("reading all bytes"); + is.readAllBytes(); + System.out.println("all bytes read"); + } catch (IOException e) { + return e; + } finally { + try { + is.close(); + } catch (IOException e) { + return e; + } + } + return is == null ? new NullPointerException() : null; + } + } + + static InputStream close(InputStream is) { + try { + is.close(); + } catch (IOException io) { + throw new CompletionException(io); + } + return is; + } + + @Test + public static void testCloseAndSubscribe() + throws InterruptedException, ExecutionException + { + BodySubscriber isb = BodySubscriber.asInputStream(); + TestCancelOnCloseSubscription s = new TestCancelOnCloseSubscription(); + InputStream is = isb.getBody() + .thenApply(HttpResponseInputStreamTest::close) + .toCompletableFuture() + .get(); + isb.onSubscribe(s); + System.out.println(s); + if (!s.cancelled.get()) { + throw new RuntimeException("subscription not cancelled"); + } + if (s.request.get() > 0) { + throw new RuntimeException("subscription has demand"); + } + } + + static byte[] readAllBytes(InputStream is) { + try { + return is.readAllBytes(); + } catch (IOException io) { + throw new CompletionException(io); + } + } + + @Test + public static void testSubscribeAndClose() + throws InterruptedException, ExecutionException + { + BodySubscriber isb = BodySubscriber.asInputStream(); + TestCancelOnCloseSubscription s = new TestCancelOnCloseSubscription(); + InputStream is = isb.getBody().toCompletableFuture().get(); + isb.onSubscribe(s); + if (s.cancelled.get()) { + throw new RuntimeException("subscription cancelled"); + } + CompletableFuture cf = CompletableFuture.supplyAsync( + () -> HttpResponseInputStreamTest.readAllBytes(is)) + .thenApply(String::new); + while (s.request.get() == 0) { + Thread.sleep(100); + } + isb.onNext(List.of(ByteBuffer.wrap("coucou".getBytes()))); + close(is); + System.out.println(s); + if (!s.cancelled.get()) { + throw new RuntimeException("subscription not cancelled"); + } + if (s.request.get() == 0) { + throw new RuntimeException("subscription has no demand"); + } + try { + System.out.println("read " + cf.get() + "!"); + throw new RuntimeException("expected IOException not raised"); + } catch (ExecutionException | CompletionException x) { + if (x.getCause() instanceof IOException) { + System.out.println("Got expected IOException: " + x.getCause()); + } else { + throw x; + } + } + } + + static class TestCancelOnCloseSubscription implements Flow.Subscription { + final AtomicLong request = new AtomicLong(); + final AtomicBoolean cancelled = new AtomicBoolean(); + + @Override + public void request(long n) { + request.addAndGet(n); + } + + @Override + public void cancel() { + cancelled.set(true); + } + + @Override + public String toString() { + return String.format("%s(request=%d, cancelled=%s)", + this.getClass().getSimpleName(), + request.get(), + cancelled.get()); + } + } +}