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.File;
  29 import java.nio.file.Files;
  30 import java.nio.file.Path;
  31 import java.util.ArrayList;
  32 import java.util.List;
  33 
  34 import jdk.jfr.Recording;
  35 import jdk.test.lib.Asserts;
  36 
  37 /**
  38  * @test
  39  * @bug 8220657
  40  * @key jfr
  41  * @requires vm.hasJFR
  42  * @library /test/lib /test/jdk
  43  * @run main/othervm jdk.jfr.jcmd.TestJcmdDumpWithFileName
  44  */
  45 public class TestJcmdDumpWithFileName {
  46 
  47     private static File destination;
  48 
  49     private static final String RECORD_NAME = "RecordingDumpTest";
  50 
  51     private static final File RECORD_DESTINATION = new File("test.jfr");
  52 
  53     public static void main(String[] args) throws Exception {
  54         testJfrDump(null, null);
  55         testJfrDump(RECORD_NAME, null);
  56         testJfrDump(RECORD_NAME, new File("dump.jfr"));
  57     }
  58 
  59     private static File checkDefaultBehavior() throws Exception {
  60       try (var files = Files.find(Path.of("."), 1, (p, a) -> p.toString().matches("^.*hotspot-pid-.*\\.jfr$") && (a.size() > 0L))) {
  61           var result = files.findAny();
  62           Asserts.assertTrue(result.isPresent(), "Flight record does not exist");
  63           return result.get().toFile();
  64       }
  65     }
  66 
  67     private static void testJfrDump(String name, File file) throws Exception {
  68         File dumpFile = (file == null) ? RECORD_DESTINATION : file;
  69 
  70         try (Recording r = new Recording()) {
  71             r.setName(RECORD_NAME);
  72             r.setDestination(RECORD_DESTINATION.toPath());
  73             r.start();
  74 
  75             String[] params = buildParameters(name, file);
  76             JcmdHelper.jcmd(params);
  77 
  78             if ((name == null) && (file == null)) {
  79                 dumpFile = checkDefaultBehavior();
  80             } else {
  81                 Asserts.assertTrue(dumpFile.exists(), dumpFile.toString() + " does not exist");
  82                 Asserts.assertGT(dumpFile.length(), 0L, "Flight record should be dumped to " + dumpFile.toString());
  83             }
  84         }
  85 
  86         dumpFile.delete();
  87         if (!RECORD_DESTINATION.equals(dumpFile)) {
  88             RECORD_DESTINATION.delete();
  89         }
  90     }
  91 
  92     private static String[] buildParameters(String name, File file) {
  93         List<String> params = new ArrayList<>();
  94         params.add("JFR.dump");
  95         if (name != null) {
  96             params.add("name=" + name);
  97         }
  98         if (file != null) {
  99             params.add("filename=" + file.toString());
 100         }
 101         return params.toArray(new String[0]);
 102     }
 103 }