JERSEY-2705: Input stream entity interruption in chunked mode issue.

- added e2e test reproducer only, no bug fix yet.

Change-Id: I97af8a2fc28a3bd599a828b7cb02a703f094c6ae
Signed-off-by: Marek Potociar <[email protected]>

Author: japod

tests/e2e/src/test/java/org/glassfish/jersey/tests/e2e/client/ChunkedInputStreamClosedPrematurelyTest.java

@@ -0,0 +1,295 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved.
+ *
+ * The contents of this file are subject to the terms of either the GNU
+ * General Public License Version 2 only ("GPL") or the Common Development
+ * and Distribution License("CDDL") (collectively, the "License").  You
+ * may not use this file except in compliance with the License.  You can
+ * obtain a copy of the License at
+ * http://glassfish.java.net/public/CDDL+GPL_1_1.html
+ * or packager/legal/LICENSE.txt.  See the License for the specific
+ * language governing permissions and limitations under the License.
+ *
+ * When distributing the software, include this License Header Notice in each
+ * file and include the License file at packager/legal/LICENSE.txt.
+ *
+ * GPL Classpath Exception:
+ * Oracle designates this particular file as subject to the "Classpath"
+ * exception as provided by Oracle in the GPL Version 2 section of the License
+ * file that accompanied this code.
+ *
+ * Modifications:
+ * If applicable, add the following below the License Header, with the fields
+ * enclosed by brackets [] replaced by your own identifying information:
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+ * If you wish your version of this file to be governed by only the CDDL or
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+ * elects to include this software in this distribution under the [CDDL or GPL
+ * Version 2] license."  If you don't indicate a single choice of license, a
+ * recipient has the option to distribute your version of this file under
+ * either the CDDL, the GPL Version 2 or to extend the choice of license to
+ * its licensees as provided above.  However, if you add GPL Version 2 code
+ * and therefore, elected the GPL Version 2 license, then the option applies
+ * only if the new code is made subject to such option by the copyright
+ * holder.
+ */
+package org.glassfish.jersey.tests.e2e.client;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.Arrays;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.InternalServerErrorException;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.ProcessingException;
+import javax.ws.rs.QueryParam;
+import javax.ws.rs.client.Entity;
+import javax.ws.rs.core.Application;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.UriBuilder;
+
+import org.glassfish.jersey.client.ClientConfig;
+import org.glassfish.jersey.client.ClientProperties;
+import org.glassfish.jersey.client.RequestEntityProcessing;
+import org.glassfish.jersey.message.internal.ReaderWriter;
+import org.glassfish.jersey.server.ResourceConfig;
+import org.glassfish.jersey.test.JerseyTest;
+
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import com.google.common.util.concurrent.SettableFuture;
+
+/**
+ * Reproducer for JERSEY-2705. Client side entity InputStream exception
+ * in chunked mode should not lead to the same behavior on the server side,
+ * as if no exception occurred at all.
+ *
+ * @author Jakub Podlesak (jakub.podlesak at oracle.com)
+ * @author Marek Potociar (marek.potociar at oracle.com)
+ */
+public class ChunkedInputStreamClosedPrematurelyTest extends JerseyTest {
+    private static final Logger LOGGER = Logger.getLogger(ChunkedInputStreamClosedPrematurelyTest.class.getName());
+    private static final Exception NO_EXCEPTION = new Exception("No exception.");
+
+    private static final AtomicInteger NEXT_REQ_ID = new AtomicInteger(0);
+    private static final String REQ_ID_PARAM_NAME = "test-req-id";
+    private static final int BYTES_TO_SEND = 1024 * 1024 + 13;
+
+    @Path("/test")
+    @SuppressWarnings({"ThrowableResultOfMethodCallIgnored", "JavaDoc"})
+    public static class TestResource {
+        private final static ConcurrentMap<String, SettableFuture<Exception>> REQUEST_MAP = new ConcurrentHashMap<>();
+
+        @QueryParam(REQ_ID_PARAM_NAME)
+        private String reqId;
+
+        @POST
+        public String post(InputStream is) {
+            final byte[] buffer = new byte[4096];
+            int readTotal = 0;
+
+            Exception thrown = NO_EXCEPTION;
+            try {
+                int read;
+                while ((read = is.read(buffer)) > -1) {
+                    readTotal += read;
+                }
+            } catch (Exception ex) {
+                thrown = ex;
+            }
+
+            if (!getFutureFor(reqId).set(thrown)) {
+                LOGGER.log(Level.WARNING,
+                        "Unable to set stream processing exception into the settable future instance for request id " + reqId,
+                        thrown);
+            }
+
+            return Integer.toString(readTotal);
+        }
+
+        @Path("/requestWasMade")
+        @GET
+        public Boolean getRequestWasMade() {
+            // add a new future for the request if not there yet to avoid race conditions with POST processing
+            final SettableFuture<Exception> esf = getFutureFor(reqId);
+            try {
+                // wait for up to three second for a request to be made;
+                // there is always a value, if set...
+                return esf.get(3, TimeUnit.SECONDS) != null;
+            } catch (InterruptedException | TimeoutException | ExecutionException e) {
+                throw new InternalServerErrorException("Post request processing has timed out for request id " + reqId, e);
+            }
+        }
+
+        @Path("/requestCausedException")
+        @GET
+        public Boolean getRequestCausedException() {
+            final SettableFuture<Exception> esf = getFutureFor(reqId);
+            try {
+                return esf.get(3, TimeUnit.SECONDS) != NO_EXCEPTION;
+            } catch (InterruptedException | ExecutionException | TimeoutException e) {
+                throw new InternalServerErrorException("Post request processing has timed out for request id " + reqId, e);
+            }
+        }
+
+        private SettableFuture<Exception> getFutureFor(String key) {
+            final SettableFuture<Exception> esf = SettableFuture.create();
+            final SettableFuture<Exception> oldEsf = REQUEST_MAP.putIfAbsent(key, esf);
+            return (oldEsf != null) ? oldEsf : esf;
+        }
+    }
+
+    @Override
+    protected Application configure() {
+        return new ResourceConfig(TestResource.class);
+    }
+
+    @Override
+    protected void configureClient(ClientConfig config) {
+        config.property(ClientProperties.REQUEST_ENTITY_PROCESSING, RequestEntityProcessing.CHUNKED);
+        config.property(ClientProperties.CHUNKED_ENCODING_SIZE, 7);
+    }
+
+    /**
+     * A sanity test to check the normal use case is working as expected.
+     */
+    @Test
+    public void testUninterrupted() {
+        final String testReqId = nextRequestId("testUninterrupted");
+
+        Response testResponse = target("test").queryParam(REQ_ID_PARAM_NAME, testReqId)
+                .request().post(Entity.entity("0123456789ABCDEF", MediaType.APPLICATION_OCTET_STREAM));
+        assertEquals("Unexpected response status code.", 200, testResponse.getStatus());
+        assertEquals("Unexpected response entity.", "16", testResponse.readEntity(String.class));
+
+        assertTrue("POST request " + testReqId + " has not reached the server.",
+                target("test").path("requestWasMade").queryParam(REQ_ID_PARAM_NAME, testReqId)
+                        .request().get(Boolean.class));
+        assertFalse("POST request " + testReqId + " has caused an unexpected exception on the server.",
+                target("test").path("requestCausedException").queryParam(REQ_ID_PARAM_NAME, testReqId)
+                        .request().get(Boolean.class));
+    }
+
+    /**
+     * This test simulates how Jersey Client should behave after JERSEY-2705 gets fixed.
+     *
+     * @throws Exception in case the test fails to execute.
+     */
+    @Test
+    public void testInterruptedJerseyHttpUrlConnection() throws Exception {
+
+        final String testReqId = nextRequestId("testInterruptedJerseyHttpUrlConnection");
+
+        URL postUrl = UriBuilder.fromUri(getBaseUri()).path("test").queryParam(REQ_ID_PARAM_NAME, testReqId).build().toURL();
+        final HttpURLConnection connection = (HttpURLConnection) postUrl.openConnection();
+
+        try {
+            connection.setRequestMethod("POST");
+            connection.setRequestProperty("Content-Type", MediaType.APPLICATION_OCTET_STREAM);
+            connection.setDoOutput(true);
+            connection.setChunkedStreamingMode(1024);
+            OutputStream entityStream = connection.getOutputStream();
+            ReaderWriter.writeTo(new ExceptionThrowingInputStream(BYTES_TO_SEND), entityStream);
+            Assert.fail("Expected ProcessingException has not been thrown.");
+        } catch (IOException expected) {
+            // so far so good
+        } finally {
+            connection.disconnect();
+        }
+        // we should make it to the server, but there the exceptional behaviour should get noticed
+        assertTrue("POST request " + testReqId + " has not reached the server.",
+                target("test").path("requestWasMade").queryParam(REQ_ID_PARAM_NAME, testReqId).request().get(Boolean.class));
+        assertTrue("POST request " + testReqId + " did not cause an expected exception on the server.",
+                target("test").path("requestCausedException").queryParam(REQ_ID_PARAM_NAME, testReqId)
+                        .request().get(Boolean.class));
+    }
+
+    /**
+     * This test reproduces the Jersey Client behavior reported in JERSEY-2705.
+     */
+    @Ignore
+    @Test
+    public void testInterruptedJerseyClient() {
+        final String testReqId = nextRequestId("testInterruptedJerseyClient");
+
+        try {
+            target("test").queryParam(REQ_ID_PARAM_NAME, testReqId).request()
+                    .post(Entity.entity(new ExceptionThrowingInputStream(BYTES_TO_SEND), MediaType.APPLICATION_OCTET_STREAM));
+            Assert.fail("Expected ProcessingException has not been thrown.");
+        } catch (ProcessingException expected) {
+            // so far so good
+        }
+        // we should make it to the server, but there the exceptional behaviour should get noticed
+        assertTrue("POST request " + testReqId + " has not reached the server.",
+                target("test").path("requestWasMade").queryParam(REQ_ID_PARAM_NAME, testReqId).request().get(Boolean.class));
+        assertTrue("POST request " + testReqId + " did not cause an expected exception on the server.",
+                target("test").path("requestCausedException").queryParam(REQ_ID_PARAM_NAME, testReqId)
+                        .request().get(Boolean.class));
+    }
+
+    private static String nextRequestId(String testMethodName) {
+        return String.format(testMethodName + "-%03d", NEXT_REQ_ID.getAndIncrement());
+    }
+
+    /**
+     * InputStream implementation that allows "reading" as many bytes as specified by threshold constructor parameter.
+     * Throws an IOException if read operation is attempted after the threshold is exceeded.
+     */
+    private class ExceptionThrowingInputStream extends InputStream {
+
+        private final int threshold;
+        private int offset = 0;
+
+        /**
+         * Get me a new stream that throws exception.
+         *
+         * @param threshold this number of bytes will be read all right
+         */
+        public ExceptionThrowingInputStream(int threshold) {
+            this.threshold = threshold;
+        }
+
+        @Override
+        public int read() throws IOException {
+            if (offset++ < threshold) {
+                return 'A';
+            } else {
+                throw new IOException("stream closed");
+            }
+        }
+
+        @Override
+        public int read(byte[] b, int off, int len) throws IOException {
+            offset += len;
+            if (offset < threshold) {
+                Arrays.fill(b, off, off + len, (byte) 'A');
+                return len;
+            } else {
+                throw new IOException("Stream closed");
+            }
+        }
+    }
+}