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 import java.nio.file.Path;
  26 import java.nio.file.Paths;
  27 import jdk.jfr.Recording;
  28 import jdk.jfr.ValueDescriptor;
  29 import jdk.jfr.consumer.RecordedEvent;
  30 import jdk.jfr.consumer.RecordingFile;
  31 
  32 // This class is intended to run inside a container
  33 public class JfrReporter {
  34     public static void main(String[] args) throws Exception {
  35         String eventName = args[0];
  36         try(Recording r = new Recording()) {
  37             r.enable(eventName);
  38             r.start();
  39             r.stop();
  40             Path p = Paths.get("/", "tmp", eventName + ".jfr");
  41             r.dump(p);
  42             for (RecordedEvent e : RecordingFile.readAllEvents(p)) {
  43                 System.out.println("===== EventType: " + e.getEventType().getName());
  44                 for (ValueDescriptor v : e.getEventType().getFields()) {
  45                     System.out.println(v.getName() + " = " + e.getValue(v.getName()));
  46                 }
  47             }
  48         }
  49     }
  50 }
  51