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 import java.nio.file.Paths;

    27 import jdk.jfr.Recording;

    28 import jdk.jfr.consumer.RecordedEvent;

    29 import jdk.jfr.consumer.RecordingFile;

    30 

    31 

    32 // This class is intended to run inside a container

    33 public class JfrReporter {

    34     public static final String TEST_REPORTED_CORES="TEST_REPORTED_CORES";

    35     public static final String TEST_REPORTED_MEMORY="TEST_REPORTED_MEMORY";

    36     public static final String TEST_REPORTED_PID="TEST_REPORTED_PID";

    37     public static final String TESTCASE_CPU="cpu";

    38     public static final String TESTCASE_MEMORY="memory";

    39     public static final String TESTCASE_PROCESS="process";

    40 

    41     public static void main(String[] args) throws Exception {

    42         String testCase = args[0];

    43         System.out.println("Testcase: " + testCase);

    44         switch (testCase) {

    45         case TESTCASE_CPU:

    46             RecordedEvent event = testEvent("jdk.CPUInformation", "cpu.jfr");

    47             System.out.println(TEST_REPORTED_CORES + "=" + event.getInt("cores"));

    48             break;

    49         case TESTCASE_MEMORY:

    50             event = testEvent("jdk.PhysicalMemory", "memory.jfr");

    51             System.out.println(TEST_REPORTED_MEMORY + "=" + event.getLong("totalSize"));

    52             break;

    53         case TESTCASE_PROCESS:

    54             event = testEvent("jdk.SystemProcess", "process.jfr");

    55             System.out.println(TEST_REPORTED_PID + "=" + event.getString("pid"));

    56             break;

    57         default:

    58             throw new IllegalArgumentException("Invalid test case");

    59         }

    60     }

    61 

    62     private static RecordedEvent testEvent(String event, String recordingPath) throws Exception {

    63         System.out.println("========= Testing event: " + event);

    64         Recording r = new Recording();

    65         r.enable(event);

    66         r.setDestination(Paths.get("tmp", recordingPath));

    67         r.start();

    68         r.stop();

    69 

    70         RecordedEvent recordedEvent = RecordingFile.readAllEvents(r.getDestination()).get(0);

    71         System.out.println("RecordedEvent: " + recordedEvent);

    72         return recordedEvent;

    73     }

    74 }