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  * @requires vm.hasJFR
  43  * @library /test/lib /test/jdk
  44  * @run main/othervm jdk.jfr.jcmd.TestJcmdDumpGeneratedFilename
  45  */
  46 public class TestJcmdDumpGeneratedFilename {
  47 
  48     public static void main(String[] args) throws Exception {
  49         // Increase the id for a recording
  50         for (int i = 0; i < 300; i++) {
  51             new Recording();
  52         }
  53         try (Recording r = new Recording(Configuration.getConfiguration("default"))) {
  54             r.start();
  55             r.stop();
  56             testDumpFilename();
  57             testDumpFilename(r);
  58             testDumpDiectory();
  59             testDumpDiectory(r);
  60         }
  61     }
  62 
  63     private static void testDumpFilename() throws Exception {
  64         OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump");
  65         verifyFile(readFilename(output), null);
  66     }
  67 
  68     private static void testDumpFilename(Recording r) throws Exception {
  69         OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump", "name=" + r.getId());
  70         verifyFile(readFilename(output), r.getId());
  71     }
  72 
  73     private static void testDumpDiectory() throws Exception {
  74         Path directory = Paths.get(".").toAbsolutePath().normalize();
  75         OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump", "filename=" + directory);
  76         String filename = readFilename(output);
  77         verifyFile(filename, null);
  78         verifyDirectory(filename, directory);
  79     }
  80 
  81     private static void testDumpDiectory(Recording r) throws Exception {
  82         Path directory = Paths.get(".").toAbsolutePath().normalize();
  83         OutputAnalyzer output = JcmdHelper.jcmd("JFR.dump", "name=" + r.getId(), "filename=" + directory);
  84         String filename = readFilename(output);
  85         verifyFile(filename, r.getId());
  86         verifyDirectory(filename, directory);
  87     }
  88 
  89     private static void verifyDirectory(String filename, Path directory) throws Exception {
  90         if (!filename.contains(directory.toAbsolutePath().normalize().toString())) {
  91             throw new Exception("Expected dump to be at " + directory);
  92         }
  93     }
  94 
  95     private static void verifyFile(String filename, Long id) throws Exception {
  96         String idText = id == null ? "" : "-id-" + Long.toString(id);
  97         String expectedName = "hotspot-pid-" + ProcessHandle.current().pid() + idText;
  98         if (!filename.contains(expectedName)) {
  99             throw new Exception("Expected filename to contain " + expectedName);
 100         }
 101         FileHelper.verifyRecording(new File(filename));
 102     }
 103 
 104     private static String readFilename(OutputAnalyzer output) throws Exception {
 105         Iterator<String> it = output.asLines().iterator();
 106         while (it.hasNext()) {
 107             String line = it.next();
 108             if (line.contains("written to")) {
 109                 line = it.next(); // blank line
 110                 return it.next();
 111             }
 112         }
 113         throw new Exception("Could not find filename of dumped recording.");
 114     }
 115 }