1 /*

     2  * Copyright (c) 2013, 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.event.runtime;

    27 

    28 import java.util.HashMap;

    29 import java.util.Map;

    30 

    31 import jdk.jfr.Recording;

    32 import jdk.jfr.consumer.RecordedEvent;

    33 import jdk.test.lib.Asserts;

    34 import jdk.test.lib.jfr.EventNames;

    35 import jdk.test.lib.jfr.Events;

    36 

    37 /*

    38  * @test

    39  * @key jfr

    40  * @library /test/lib

    41  * @run main/othervm jdk.jfr.event.runtime.TestSystemPropertyEvent

    42  */

    43 public class TestSystemPropertyEvent {

    44 

    45     private final static String EVENT_NAME = EventNames.InitialSystemProperty;

    46 

    47     public static void main(String[] args) throws Throwable {

    48         Map<String, String> systemProps = createInitialSystemProperties();

    49         // Recording should only contain properties defined at JVM start.

    50         // This property should not be included.

    51         System.setProperty("party.pooper", "buh!");

    52 

    53         Recording recording = new Recording();

    54         recording.enable(EVENT_NAME);

    55         recording.start();

    56         recording.stop();

    57 

    58         Map<String, String> eventProps = new HashMap<>();

    59         for (RecordedEvent event : Events.fromRecording(recording)) {

    60             String key = Events.assertField(event, "key").notEmpty().getValue();

    61             String value = Events.assertField(event, "value").notNull().getValue();

    62             if (!eventProps.containsKey(key)) {

    63                 // Event is received at both start and end of chunk. Only log first.

    64                 System.out.println("Event:" + event);

    65             }

    66             eventProps.put(key, value);

    67         }

    68         Asserts.assertGreaterThan(eventProps.size(), 4, "Should have at least 5 events");

    69 

    70         // Value of System.properties may change. We can not expect all values in

    71         // events and System.getProperties() to be equal.

    72         // To do some verification of property values we require that at least one

    73         // property with non-empty value is equal.

    74         int countEqualAndNonEmpty = 0;

    75 

    76         String missingKeys = "";

    77         for (String key : eventProps.keySet()) {

    78             if (!systemProps.containsKey(key)) {

    79                 missingKeys += key + " ";

    80                 continue;

    81             }

    82             if (isEqualAndNonEmpty(key, eventProps.get(key), systemProps.get(key))) {

    83                 countEqualAndNonEmpty++;

    84             }

    85         }

    86 

    87         if (!missingKeys.isEmpty()) {

    88             Asserts.fail("Event properties not found in System.properties(): " + missingKeys);

    89         }

    90         Asserts.assertTrue(countEqualAndNonEmpty > 0, "No property had expected value");

    91     }

    92 

    93     private static boolean isEqualAndNonEmpty(String key, String eventValue, String systemValue) {

    94         if (eventValue == null || systemValue == null || eventValue.isEmpty() || systemValue.isEmpty()) {

    95             return false;

    96         }

    97         boolean isEquals = eventValue.equals(systemValue);

    98         System.out.printf("eq=%b, key='%s', event='%s', system='%s'%n", isEquals, key, eventValue, systemValue);

    99         return isEquals;

   100     }

   101 

   102     private static Map<String, String> createInitialSystemProperties() {

   103         Map<String, String> result = new HashMap<>();

   104         for (Object keyObject : System.getProperties().keySet()) {

   105             String key = (String) keyObject;

   106             result.put(key, System.getProperty(key));

   107             System.out.println("initialProp: " + key);

   108         }

   109         return result;

   110     }

   111 }