| /* |
| * 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 java.io.IOException; |
| import java.io.InputStream; |
| import java.io.UncheckedIOException; |
| import java.net.http.HttpResponse; |
| import java.net.http.HttpResponse.BodySubscriber; |
| import java.net.http.HttpResponse.BodySubscribers; |
| 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<InputStream> isb = BodySubscribers.ofInputStream(); |
| ErrorTestSubscription s = new ErrorTestSubscription(isb); |
| CompletionStage<Throwable> 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<InputStream> 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<InputStream> 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<InputStream> isb = BodySubscribers.ofInputStream(); |
| 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) { |
| io.printStackTrace(); |
| throw new CompletionException(io); |
| } |
| } |
| |
| @Test |
| public static void testSubscribeAndClose() |
| throws InterruptedException, ExecutionException |
| { |
| BodySubscriber<InputStream> isb = BodySubscribers.ofInputStream(); |
| TestCancelOnCloseSubscription s = new TestCancelOnCloseSubscription(); |
| InputStream is = isb.getBody().toCompletableFuture().get(); |
| isb.onSubscribe(s); |
| if (s.cancelled.get()) { |
| throw new RuntimeException("subscription cancelled"); |
| } |
| CompletableFuture<String> 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()); |
| } |
| } |
| } |