1 /*
   2  * Copyright (c) 2019, 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.IOException;
  29 import java.nio.file.Files;
  30 import java.nio.file.Path;
  31 import java.util.stream.Stream;
  32 
  33 import jdk.jfr.Recording;
  34 import jdk.test.lib.Asserts;
  35 
  36 /**
  37  * @test
  38  * @bug 8220657
  39  * @key jfr
  40  * @requires vm.hasJFR
  41  * @library /test/lib /test/jdk
  42  * @run main/othervm jdk.jfr.jcmd.TestJcmdDumpWithFileName
  43  */
  44 public class TestJcmdDumpWithFileName {
  45 
  46     public static void main(String[] args) throws Exception {
  47         testDumpAll();
  48         testDumpNamed();
  49         testDumpNamedWithFilename();
  50     }
  51 
  52     private static void testDumpAll() throws Exception {
  53         Path p = Path.of("testDumpAll.jfr").toAbsolutePath();
  54         try (Recording r = new Recording()) {
  55             r.setName("testDumpAll");
  56             r.setDestination(p);
  57             r.start();
  58 
  59             JcmdHelper.jcmd("JFR.dump");
  60 
  61             Asserts.assertFalse(namedFile(p), "Unexpected file: " + p.toString());
  62             Asserts.assertTrue(generatedFile(), "Expected generated file");
  63         }
  64         cleanup();
  65     }
  66 
  67     private static void testDumpNamed() throws Exception {
  68         Path p = Path.of("testDumpNamed.jfr").toAbsolutePath();
  69         try (Recording r = new Recording()) {
  70             r.setName("testDumpNamed");
  71             r.setDestination(p);
  72             r.start();
  73 
  74             JcmdHelper.jcmd("JFR.dump", "name=testDumpNamed");
  75 
  76             Asserts.assertTrue(namedFile(p), "Expected file: " + p.toString());
  77             Asserts.assertFalse(generatedFile(), "Unexpected generated file");
  78         }
  79         cleanup();
  80     }
  81 
  82     private static void testDumpNamedWithFilename() throws Exception {
  83         Path p = Path.of("testDumpNamedWithFilename.jfr").toAbsolutePath();
  84         Path override = Path.of("override.jfr").toAbsolutePath();
  85         try (Recording r = new Recording()) {
  86             r.setName("testDumpNamedWithFilename");
  87             r.setDestination(p);
  88             r.start();
  89 
  90             JcmdHelper.jcmd("JFR.dump", "name=testDumpNamedWithFilename", "filename=" + override.toString());
  91 
  92             Asserts.assertFalse(namedFile(p), "Unexpected file: " + p.toString());
  93             Asserts.assertTrue(namedFile(override), "Expected file: " + override.toString());
  94             Asserts.assertFalse(generatedFile(), "Unexpected generated file");
  95         }
  96         cleanup();
  97     }
  98 
  99     private static boolean namedFile(Path dumpFile) throws IOException {
 100         return Files.exists(dumpFile) && (Files.size(dumpFile) > 0);
 101     }
 102 
 103     private static boolean generatedFile() throws IOException {
 104         long pid = ProcessHandle.current().pid();
 105         Stream<Path> stream = Files.find(Path.of("."), 1, (p, a) -> p.toString()
 106                                                                      .matches("^.*hotspot-pid-" + pid + "-[0-9_]+\\.jfr$") && (a.size() > 0L));
 107         try (stream) {
 108             return stream.findAny()
 109                          .isPresent();
 110         }
 111     }
 112 
 113     private static void cleanup() throws IOException {
 114         Stream<Path> stream = Files.find(Path.of("."), 1, (p, a) -> p.toString().endsWith(".jfr"));
 115         try (stream) {
 116             stream.forEach(p -> p.toFile().delete());
 117         }
 118     }
 119 
 120 }