1 /*
   2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
   3  * 
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * The contents of this file are subject to the terms of either the Universal Permissive License
   7  * v 1.0 as shown at http://oss.oracle.com/licenses/upl
   8  *
   9  * or the following license:
  10  *
  11  * Redistribution and use in source and binary forms, with or without modification, are permitted
  12  * provided that the following conditions are met:
  13  * 
  14  * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
  15  * and the following disclaimer.
  16  * 
  17  * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
  18  * conditions and the following disclaimer in the documentation and/or other materials provided with
  19  * the distribution.
  20  * 
  21  * 3. Neither the name of the copyright holder nor the names of its contributors may be used to
  22  * endorse or promote products derived from this software without specific prior written permission.
  23  * 
  24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
  25  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  26  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
  27  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  30  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
  31  * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33 package org.openjdk.jmc.rjmx.services.internal;
  34 
  35 import javax.management.MBeanServerConnection;
  36 
  37 import org.openjdk.jmc.rjmx.ConnectionException;
  38 import org.openjdk.jmc.rjmx.ConnectionToolkit;
  39 import org.openjdk.jmc.rjmx.IConnectionHandle;
  40 import org.openjdk.jmc.rjmx.ServiceNotAvailableException;
  41 import org.openjdk.jmc.rjmx.services.ICommercialFeaturesService;
  42 import org.openjdk.jmc.rjmx.services.IDiagnosticCommandService;
  43 import javax.management.ObjectName;
  44 
  45 public class HotSpot23CommercialFeaturesService implements ICommercialFeaturesService {
  46         private final static String VM_FLAG = "UnlockCommercialFeatures"; //$NON-NLS-1$
  47         private final static String UNLOCK_COMMAND = "VM.unlock_commercial_features"; //$NON-NLS-1$
  48         private final MBeanServerConnection server;
  49         private final IDiagnosticCommandService dcs;
  50         private final static String JFR2_MBEAN_OBJECT_NAME = "jdk.management.jfr:type=FlightRecorder"; //$NON-NLS-1$
  51 
  52         public HotSpot23CommercialFeaturesService(IConnectionHandle handle)
  53                         throws ConnectionException, ServiceNotAvailableException {
  54                 server = handle.getServiceOrThrow(MBeanServerConnection.class);
  55                 dcs = handle.getServiceOrNull(IDiagnosticCommandService.class);
  56                 try {
  57                         HotspotManagementToolkit.getVMOption(server, VM_FLAG); // Will fail if option is not available
  58                 } catch (Exception e) {
  59                         // Commercial Feature option is not available but Flighter Recorder is.
  60                         if (!isJfrMBeanAvailable()) {
  61                                 throw new ServiceNotAvailableException(""); //$NON-NLS-1$
  62                         }
  63                 }
  64         }
  65 
  66         @Override
  67         public boolean isCommercialFeaturesEnabled() {
  68                 try {
  69                         return ((String) HotspotManagementToolkit.getVMOption(server, VM_FLAG)).contains("true"); //$NON-NLS-1$
  70                 } catch (Exception e) {
  71                         // Commercial Feature option is not available but Flighter Recorder is.
  72                         if (isJfrMBeanAvailable()) {
  73                                 return true;
  74                         }
  75                         return false;
  76                 }
  77         }
  78 
  79         @Override
  80         public void enableCommercialFeatures() throws Exception {
  81                 if (dcs != null) {
  82                         dcs.runCtrlBreakHandlerWithResult(UNLOCK_COMMAND);
  83                 }
  84                 if (!isCommercialFeaturesEnabled()) {
  85                         HotspotManagementToolkit.setVMOption(server, VM_FLAG, "true"); //$NON-NLS-1$
  86                 }
  87         }
  88 
  89         private boolean isJfrMBeanAvailable() {
  90                 try {
  91                         getJfrMBeanObjectName();
  92                         return true;
  93                 } catch (Exception e) {
  94                         return false;
  95                 }
  96         }
  97 
  98         private ObjectName getJfrMBeanObjectName() throws Exception {
  99                 ObjectName candidateObjectName = ConnectionToolkit.createObjectName(JFR2_MBEAN_OBJECT_NAME);
 100                 server.getMBeanInfo(candidateObjectName);
 101                 return candidateObjectName;
 102         }
 103 }