1 /*
   2  * Copyright (c) 2015, 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.jcmd;
  27 
  28 import java.io.File;
  29 import java.nio.file.Path;
  30 import java.nio.file.Paths;
  31 import java.util.Iterator;
  32 
  33 import jdk.jfr.Configuration;
  34 import jdk.jfr.Recording;
  35 import jdk.test.lib.jfr.FileHelper;
  36 import jdk.test.lib.process.OutputAnalyzer;
  37 
  38 /*
  39  * @test
  40  * @summary The test verifies JFR.dump command
  41  * @key jfr
  42  * @library /test/lib /test/jdk
  43  * @run main/othervm jdk.jfr.jcmd.TestJcmdDumpGeneratedFilename
  44  */
  45 public class TestJcmdDumpGeneratedFilename {
  46 
  47     public static void main(String[] args) throws Exception {
  48         // Increase the id for a recording
  49         for (int i = 0; i < 300; i++) {
  50             new Recording();
  51         }
  52         try (Recording r = new Recording(Configuration.getConfiguration("default"))) {
  53             r.start();
  54             r.stop();
  55             testDumpFilename();
  56             testDumpFilename(r);
  57             testDumpDiectory();
  58             testDumpDiectory(r);
  59         }
  60     }
  61 
  62     private static void testDumpFilename() throws Exception {
  63         OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump");
  64         verifyFile(readFilename(output), null);
  65     }
  66 
  67     private static void testDumpFilename(Recording r) throws Exception {
  68         OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump", "name=" + r.getId());
  69         verifyFile(readFilename(output), r.getId());
  70     }
  71 
  72     private static void testDumpDiectory() throws Exception {
  73         Path directory = Paths.get(".").toAbsolutePath().normalize();
  74         OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump", "filename=" + directory);
  75         String filename = readFilename(output);
  76         verifyFile(filename, null);
  77         verifyDirectory(filename, directory);
  78     }
  79 
  80     private static void testDumpDiectory(Recording r) throws Exception {
  81         Path directory = Paths.get(".").toAbsolutePath().normalize();
  82         OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump", "name=" + r.getId(), "filename=" + directory);
  83         String filename = readFilename(output);
  84         verifyFile(filename, r.getId());
  85         verifyDirectory(filename, directory);
  86     }
  87 
  88     private static void verifyDirectory(String filename, Path directory) throws Exception {
  89         if (!filename.contains(directory.toAbsolutePath().normalize().toString())) {
  90             throw new Exception("Expected dump to be at " + directory);
  91         }
  92     }
  93 
  94     private static void verifyFile(String filename, Long id) throws Exception {
  95         String idText = id == null ? "" : "-id-" + Long.toString(id);
  96         String expectedName = "hotspot-pid-" + ProcessHandle.current().pid() + idText;
  97         if (!filename.contains(expectedName)) {
  98             throw new Exception("Expected filename to contain " + expectedName);
  99         }
 100         FileHelper.verifyRecording(new File(filename));
 101     }
 102 
 103     private static String readFilename(OutputAnalyzer output) throws Exception {
 104         Iterator<String> it = output.asLines().iterator();
 105         while (it.hasNext()) {
 106             String line = it.next();
 107             if (line.contains("written to")) {
 108                 line = it.next(); // blank line
 109                 return it.next();
 110             }
 111         }
 112         throw new Exception("Could not find filename of dumped recording.");
 113     }
 114 }