1 /*
   2  * Copyright (c) 2015, 2016, 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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 import com.sun.management.HotSpotDiagnosticMXBean;
  25 import com.sun.management.VMOption;
  26 import java.lang.management.ManagementFactory;
  27 import java.util.Arrays;
  28 import java.util.Set;
  29 import java.util.stream.Collectors;
  30 import javax.management.MBeanServerConnection;
  31 import javax.management.openmbean.CompositeData;
  32 import javax.management.openmbean.CompositeType;
  33 import javax.management.openmbean.OpenType;
  34 
  35 import static javax.management.openmbean.SimpleType.*;
  36 
  37 /*
  38  * @test
  39  * @bug     8042901
  40  * @summary Check that MappedMXBeanType.toOpenTypeData supports VMOption
  41  * @author  Shanliang Jiang
  42  */
  43 public class VMOptionOpenDataTest {
  44     private static final String[] names = new String[] {
  45         "name", "value", "origin", "writeable"
  46     };
  47     private static final OpenType[] types = new OpenType[] {
  48         STRING, STRING, STRING, BOOLEAN
  49     };
  50 
  51     public static void main(String... args) throws Exception {
  52         MBeanServerConnection msc = ManagementFactory.getPlatformMBeanServer();
  53         HotSpotDiagnosticMXBean mxbean =
  54             ManagementFactory.getPlatformMXBean(msc, HotSpotDiagnosticMXBean.class);
  55 
  56 
  57         String[] signatures = new String[] {
  58             String.class.getName()
  59         };
  60         Object obj = msc.invoke(mxbean.getObjectName(), "getVMOption",
  61             new String[] { "PrintVMOptions"}, signatures);
  62 
  63         CompositeData data = (CompositeData)obj;
  64         validateType(data);
  65 
  66         VMOption option = mxbean.getVMOption("PrintVMOptions");
  67         VMOption o = VMOption.from(data);
  68         assertEquals(option, o);
  69     }
  70 
  71     private static void validateType(CompositeData data) {
  72         CompositeType type = data.getCompositeType();
  73         Set<String> keys = Arrays.stream(names).collect(Collectors.toSet());
  74         if (!type.keySet().equals(keys)) {
  75             throw new RuntimeException("key not matched: " + type.keySet().toString());
  76         }
  77         for (int i=0; i < names.length; i++) {
  78             OpenType t = type.getType(names[i]);
  79             if (t != types[i]) {
  80                 throw new AssertionError(names[i] + ": type not matched: " +
  81                     t + " expected: " + types[i]);
  82             }
  83         }
  84     }
  85 
  86     private static void assertEquals(VMOption o1, VMOption o2) {
  87         if (!o1.getName().equals(o2.getName()) ||
  88             !o1.getOrigin().equals(o2.getOrigin()) ||
  89             !o1.getValue().equals(o2.getValue()) ||
  90             o1.isWriteable() != o2.isWriteable()) {
  91             throw new AssertionError(o1 + " != " + o2);
  92         }
  93 
  94     }
  95 
  96 }