author | weijun |
Thu, 11 Dec 2014 15:23:02 +0800 | |
changeset 27957 | 24b4e6082f19 |
parent 25859 | 3317bb8137f4 |
permissions | -rw-r--r-- |
17954 | 1 |
/* |
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* Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.management; |
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import com.sun.management.DiagnosticCommandMBean; |
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import java.lang.reflect.Constructor; |
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import java.lang.reflect.InvocationTargetException; |
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import java.security.Permission; |
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import java.util.*; |
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import javax.management.*; |
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/** |
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* Implementation class for the diagnostic commands subsystem. |
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* |
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* @since 1.8 |
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*/ |
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class DiagnosticCommandImpl extends NotificationEmitterSupport |
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implements DiagnosticCommandMBean { |
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private final VMManagement jvm; |
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private volatile Map<String, Wrapper> wrappers = null; |
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private static final String strClassName = "".getClass().getName(); |
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private static final String strArrayClassName = String[].class.getName(); |
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private final boolean isSupported; |
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@Override |
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public Object getAttribute(String attribute) throws AttributeNotFoundException, |
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MBeanException, ReflectionException { |
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throw new AttributeNotFoundException(attribute); |
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} |
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||
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@Override |
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public void setAttribute(Attribute attribute) throws AttributeNotFoundException, |
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InvalidAttributeValueException, MBeanException, ReflectionException { |
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throw new AttributeNotFoundException(attribute.getName()); |
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} |
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@Override |
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public AttributeList getAttributes(String[] attributes) { |
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return new AttributeList(); |
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} |
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@Override |
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public AttributeList setAttributes(AttributeList attributes) { |
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return new AttributeList(); |
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} |
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private class Wrapper { |
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String name; |
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String cmd; |
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DiagnosticCommandInfo info; |
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Permission permission; |
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Wrapper(String name, String cmd, DiagnosticCommandInfo info) |
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throws InstantiationException { |
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this.name = name; |
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this.cmd = cmd; |
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this.info = info; |
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this.permission = null; |
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Exception cause = null; |
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if (info.getPermissionClass() != null) { |
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try { |
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diff
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Class<?> c = Class.forName(info.getPermissionClass()); |
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if (info.getPermissionAction() == null) { |
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try { |
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diff
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Constructor<?> constructor = c.getConstructor(String.class); |
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permission = (Permission) constructor.newInstance(info.getPermissionName()); |
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} catch (InstantiationException | IllegalAccessException |
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| IllegalArgumentException | InvocationTargetException |
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| NoSuchMethodException | SecurityException ex) { |
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cause = ex; |
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} |
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} |
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if (permission == null) { |
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try { |
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aa7f539c3569
8049820: Fix raw and unchecked lint warnings in sun.management
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Constructor<?> constructor = c.getConstructor(String.class, String.class); |
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permission = (Permission) constructor.newInstance( |
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info.getPermissionName(), |
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info.getPermissionAction()); |
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} catch (InstantiationException | IllegalAccessException |
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| IllegalArgumentException | InvocationTargetException |
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| NoSuchMethodException | SecurityException ex) { |
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cause = ex; |
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} |
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} |
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} catch (ClassNotFoundException ex) { } |
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if (permission == null) { |
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InstantiationException iex = |
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new InstantiationException("Unable to instantiate required permission"); |
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iex.initCause(cause); |
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} |
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} |
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} |
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public String execute(String[] args) { |
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if (permission != null) { |
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SecurityManager sm = System.getSecurityManager(); |
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if (sm != null) { |
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sm.checkPermission(permission); |
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} |
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} |
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if(args == null) { |
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return executeDiagnosticCommand(cmd); |
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} else { |
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StringBuilder sb = new StringBuilder(); |
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sb.append(cmd); |
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for(int i=0; i<args.length; i++) { |
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if(args[i] == null) { |
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throw new IllegalArgumentException("Invalid null argument"); |
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} |
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sb.append(" "); |
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sb.append(args[i]); |
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} |
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return executeDiagnosticCommand(sb.toString()); |
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} |
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} |
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} |
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DiagnosticCommandImpl(VMManagement jvm) { |
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this.jvm = jvm; |
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isSupported = jvm.isRemoteDiagnosticCommandsSupported(); |
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} |
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private static class OperationInfoComparator implements Comparator<MBeanOperationInfo> { |
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@Override |
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public int compare(MBeanOperationInfo o1, MBeanOperationInfo o2) { |
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return o1.getName().compareTo(o2.getName()); |
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} |
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} |
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@Override |
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public MBeanInfo getMBeanInfo() { |
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SortedSet<MBeanOperationInfo> operations = new TreeSet<>(new OperationInfoComparator()); |
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Map<String, Wrapper> wrappersmap; |
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if (!isSupported) { |
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25405
aa7f539c3569
8049820: Fix raw and unchecked lint warnings in sun.management
darcy
parents:
24865
diff
changeset
|
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wrappersmap = Collections.emptyMap(); |
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} else { |
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try { |
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String[] command = getDiagnosticCommands(); |
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DiagnosticCommandInfo[] info = getDiagnosticCommandInfo(command); |
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MBeanParameterInfo stringArgInfo[] = new MBeanParameterInfo[]{ |
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new MBeanParameterInfo("arguments", strArrayClassName, |
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"Array of Diagnostic Commands Arguments and Options") |
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}; |
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wrappersmap = new HashMap<>(); |
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for (int i = 0; i < command.length; i++) { |
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String name = transform(command[i]); |
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try { |
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Wrapper w = new Wrapper(name, command[i], info[i]); |
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wrappersmap.put(name, w); |
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operations.add(new MBeanOperationInfo( |
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w.name, |
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w.info.getDescription(), |
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(w.info.getArgumentsInfo() == null |
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|| w.info.getArgumentsInfo().isEmpty()) |
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? null : stringArgInfo, |
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strClassName, |
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MBeanOperationInfo.ACTION_INFO, |
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commandDescriptor(w))); |
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} catch (InstantiationException ex) { |
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// If for some reasons the creation of a diagnostic command |
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// wrappers fails, the diagnostic command is just ignored |
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// and won't appear in the DynamicMBean |
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} |
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} |
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} catch (IllegalArgumentException | UnsupportedOperationException e) { |
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25405
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8049820: Fix raw and unchecked lint warnings in sun.management
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24865
diff
changeset
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wrappersmap = Collections.emptyMap(); |
17954 | 193 |
} |
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} |
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wrappers = Collections.unmodifiableMap(wrappersmap); |
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HashMap<String, Object> map = new HashMap<>(); |
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map.put("immutableInfo", "false"); |
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map.put("interfaceClassName","com.sun.management.DiagnosticCommandMBean"); |
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map.put("mxbean", "false"); |
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Descriptor desc = new ImmutableDescriptor(map); |
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return new MBeanInfo( |
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this.getClass().getName(), |
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"Diagnostic Commands", |
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null, // attributes |
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null, // constructors |
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operations.toArray(new MBeanOperationInfo[operations.size()]), // operations |
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getNotificationInfo(), // notifications |
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desc); |
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} |
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@Override |
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public Object invoke(String actionName, Object[] params, String[] signature) |
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throws MBeanException, ReflectionException { |
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if (!isSupported) { |
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throw new UnsupportedOperationException(); |
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} |
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if (wrappers == null) { |
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getMBeanInfo(); |
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} |
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Wrapper w = wrappers.get(actionName); |
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if (w != null) { |
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if (w.info.getArgumentsInfo().isEmpty() |
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&& (params == null || params.length == 0) |
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&& (signature == null || signature.length == 0)) { |
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return w.execute(null); |
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} else if((params != null && params.length == 1) |
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&& (signature != null && signature.length == 1 |
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&& signature[0] != null |
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&& signature[0].compareTo(strArrayClassName) == 0)) { |
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return w.execute((String[]) params[0]); |
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} |
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} |
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throw new ReflectionException(new NoSuchMethodException(actionName)); |
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} |
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private static String transform(String name) { |
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StringBuilder sb = new StringBuilder(); |
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boolean toLower = true; |
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boolean toUpper = false; |
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for (int i = 0; i < name.length(); i++) { |
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char c = name.charAt(i); |
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if (c == '.' || c == '_') { |
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toLower = false; |
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toUpper = true; |
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} else { |
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if (toUpper) { |
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toUpper = false; |
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sb.append(Character.toUpperCase(c)); |
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} else if(toLower) { |
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sb.append(Character.toLowerCase(c)); |
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} else { |
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sb.append(c); |
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} |
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} |
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} |
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return sb.toString(); |
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} |
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private Descriptor commandDescriptor(Wrapper w) throws IllegalArgumentException { |
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HashMap<String, Object> map = new HashMap<>(); |
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map.put("dcmd.name", w.info.getName()); |
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map.put("dcmd.description", w.info.getDescription()); |
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map.put("dcmd.vmImpact", w.info.getImpact()); |
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map.put("dcmd.permissionClass", w.info.getPermissionClass()); |
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map.put("dcmd.permissionName", w.info.getPermissionName()); |
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map.put("dcmd.permissionAction", w.info.getPermissionAction()); |
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map.put("dcmd.enabled", w.info.isEnabled()); |
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StringBuilder sb = new StringBuilder(); |
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sb.append("help "); |
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sb.append(w.info.getName()); |
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map.put("dcmd.help", executeDiagnosticCommand(sb.toString())); |
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if (w.info.getArgumentsInfo() != null && !w.info.getArgumentsInfo().isEmpty()) { |
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HashMap<String, Object> allargmap = new HashMap<>(); |
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for (DiagnosticCommandArgumentInfo arginfo : w.info.getArgumentsInfo()) { |
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HashMap<String, Object> argmap = new HashMap<>(); |
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argmap.put("dcmd.arg.name", arginfo.getName()); |
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argmap.put("dcmd.arg.type", arginfo.getType()); |
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argmap.put("dcmd.arg.description", arginfo.getDescription()); |
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argmap.put("dcmd.arg.isMandatory", arginfo.isMandatory()); |
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280 |
argmap.put("dcmd.arg.isMultiple", arginfo.isMultiple()); |
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281 |
boolean isOption = arginfo.isOption(); |
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282 |
argmap.put("dcmd.arg.isOption", isOption); |
|
283 |
if(!isOption) { |
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284 |
argmap.put("dcmd.arg.position", arginfo.getPosition()); |
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285 |
} else { |
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286 |
argmap.put("dcmd.arg.position", -1); |
|
287 |
} |
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288 |
allargmap.put(arginfo.getName(), new ImmutableDescriptor(argmap)); |
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289 |
} |
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290 |
map.put("dcmd.arguments", new ImmutableDescriptor(allargmap)); |
|
291 |
} |
|
292 |
return new ImmutableDescriptor(map); |
|
293 |
} |
|
294 |
||
295 |
private final static String notifName = |
|
296 |
"javax.management.Notification"; |
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297 |
||
298 |
private final static String[] diagFramNotifTypes = { |
|
299 |
"jmx.mbean.info.changed" |
|
300 |
}; |
|
301 |
||
302 |
private MBeanNotificationInfo[] notifInfo = null; |
|
303 |
||
304 |
@Override |
|
305 |
public MBeanNotificationInfo[] getNotificationInfo() { |
|
306 |
synchronized (this) { |
|
307 |
if (notifInfo == null) { |
|
308 |
notifInfo = new MBeanNotificationInfo[1]; |
|
309 |
notifInfo[0] = |
|
310 |
new MBeanNotificationInfo(diagFramNotifTypes, |
|
311 |
notifName, |
|
312 |
"Diagnostic Framework Notification"); |
|
313 |
} |
|
314 |
} |
|
315 |
return notifInfo; |
|
316 |
} |
|
317 |
||
318 |
private static long seqNumber = 0; |
|
319 |
private static long getNextSeqNumber() { |
|
320 |
return ++seqNumber; |
|
321 |
} |
|
322 |
||
323 |
private void createDiagnosticFrameworkNotification() { |
|
324 |
||
325 |
if (!hasListeners()) { |
|
326 |
return; |
|
327 |
} |
|
328 |
ObjectName on = null; |
|
329 |
try { |
|
330 |
on = ObjectName.getInstance(ManagementFactoryHelper.HOTSPOT_DIAGNOSTIC_COMMAND_MBEAN_NAME); |
|
331 |
} catch (MalformedObjectNameException e) { } |
|
332 |
Notification notif = new Notification("jmx.mbean.info.changed", |
|
333 |
on, |
|
334 |
getNextSeqNumber()); |
|
335 |
notif.setUserData(getMBeanInfo()); |
|
336 |
sendNotification(notif); |
|
337 |
} |
|
338 |
||
339 |
@Override |
|
340 |
public synchronized void addNotificationListener(NotificationListener listener, |
|
341 |
NotificationFilter filter, |
|
342 |
Object handback) { |
|
343 |
boolean before = hasListeners(); |
|
344 |
super.addNotificationListener(listener, filter, handback); |
|
345 |
boolean after = hasListeners(); |
|
346 |
if (!before && after) { |
|
347 |
setNotificationEnabled(true); |
|
348 |
} |
|
349 |
} |
|
350 |
||
351 |
@Override |
|
352 |
public synchronized void removeNotificationListener(NotificationListener listener) |
|
353 |
throws ListenerNotFoundException { |
|
354 |
boolean before = hasListeners(); |
|
355 |
super.removeNotificationListener(listener); |
|
356 |
boolean after = hasListeners(); |
|
357 |
if (before && !after) { |
|
358 |
setNotificationEnabled(false); |
|
359 |
} |
|
360 |
} |
|
361 |
||
362 |
@Override |
|
363 |
public synchronized void removeNotificationListener(NotificationListener listener, |
|
364 |
NotificationFilter filter, |
|
365 |
Object handback) |
|
366 |
throws ListenerNotFoundException { |
|
367 |
boolean before = hasListeners(); |
|
368 |
super.removeNotificationListener(listener, filter, handback); |
|
369 |
boolean after = hasListeners(); |
|
370 |
if (before && !after) { |
|
371 |
setNotificationEnabled(false); |
|
372 |
} |
|
373 |
} |
|
374 |
||
375 |
private native void setNotificationEnabled(boolean enabled); |
|
376 |
private native String[] getDiagnosticCommands(); |
|
377 |
private native DiagnosticCommandInfo[] getDiagnosticCommandInfo(String[] commands); |
|
378 |
private native String executeDiagnosticCommand(String command); |
|
379 |
||
380 |
} |