1 /*
   2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.jfr.event.io;
  27 
  28 import static jdk.test.lib.Asserts.assertEquals;
  29 
  30 import java.io.IOException;
  31 import java.io.InputStream;
  32 import java.io.OutputStream;
  33 import java.net.ServerSocket;
  34 import java.net.Socket;
  35 import java.time.Duration;
  36 import java.util.ArrayList;
  37 import java.util.List;
  38 
  39 import jdk.jfr.Recording;
  40 import jdk.jfr.consumer.RecordedEvent;
  41 import jdk.test.lib.jfr.Events;
  42 import jdk.test.lib.thread.TestThread;
  43 import jdk.test.lib.thread.XRun;
  44 
  45 /*
  46  * @test
  47  * @key jfr
  48  * @library /test/lib /test/jdk
  49  * @run main/othervm jdk.jfr.event.io.TestSocketEvents
  50  */
  51 public class TestSocketEvents {
  52 
  53     private static final int writeInt = 'A';
  54     private static final byte[] writeBuf = { 'B', 'C', 'D', 'E' };
  55 
  56     private List<IOEvent> expectedEvents = new ArrayList<>();
  57     private synchronized void addExpectedEvent(IOEvent event) {
  58         expectedEvents.add(event);
  59     }
  60 
  61     public static void main(String[] args) throws Throwable {
  62         new TestSocketEvents().test();
  63     }
  64 
  65     private void test() throws Throwable {
  66         Recording recording = new Recording();
  67 
  68         try (ServerSocket ss = new ServerSocket()) {
  69             recording.enable(IOEvent.EVENT_SOCKET_READ).withThreshold(Duration.ofMillis(0));
  70             recording.enable(IOEvent.EVENT_SOCKET_WRITE).withThreshold(Duration.ofMillis(0));
  71             recording.start();
  72 
  73             ss.setReuseAddress(true);
  74             ss.bind(null);
  75 
  76             TestThread readerThread = new TestThread(new XRun() {
  77                 @Override
  78                 public void xrun() throws IOException {
  79                     byte[] bs = new byte[4];
  80                     try (Socket s = ss.accept(); InputStream is = s.getInputStream()) {
  81                         int readInt = is.read();
  82                         assertEquals(readInt, writeInt, "Wrong readInt");
  83                         addExpectedEvent(IOEvent.createSocketReadEvent(1, s));
  84 
  85                         int bytesRead = is.read(bs, 0, 3);
  86                         assertEquals(bytesRead, 3, "Wrong bytesRead partial buffer");
  87                         addExpectedEvent(IOEvent.createSocketReadEvent(bytesRead, s));
  88 
  89                         bytesRead = is.read(bs);
  90                         assertEquals(bytesRead, writeBuf.length, "Wrong bytesRead full buffer");
  91                         addExpectedEvent(IOEvent.createSocketReadEvent(bytesRead, s));
  92 
  93                         // Try to read more, but writer have closed. Should get EOF.
  94                         readInt = is.read();
  95                         assertEquals(readInt, -1, "Wrong readInt at EOF");
  96                         addExpectedEvent(IOEvent.createSocketReadEvent(-1, s));
  97                    }
  98                 }
  99             });
 100             readerThread.start();
 101 
 102             try (Socket s = new Socket()) {
 103                 s.connect(ss.getLocalSocketAddress());
 104                 try (OutputStream os = s.getOutputStream()) {
 105                     os.write(writeInt);
 106                     addExpectedEvent(IOEvent.createSocketWriteEvent(1, s));
 107                     os.write(writeBuf, 0, 3);
 108                     addExpectedEvent(IOEvent.createSocketWriteEvent(3, s));
 109                     os.write(writeBuf);
 110                     addExpectedEvent(IOEvent.createSocketWriteEvent(writeBuf.length, s));
 111                 }
 112             }
 113 
 114             readerThread.joinAndThrow();
 115             recording.stop();
 116             List<RecordedEvent> events = Events.fromRecording(recording);
 117             IOHelper.verifyEquals(events, expectedEvents);
 118         }
 119     }
 120 }