/*
* Copyright (c) 2007, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package com.sun.org.glassfish.gmbal;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import javax.management.Attribute;
import javax.management.AttributeList;
import javax.management.AttributeNotFoundException;
import javax.management.Descriptor;
import javax.management.InstanceNotFoundException;
import javax.management.IntrospectionException;
import javax.management.InvalidAttributeValueException;
import javax.management.JMException;
import javax.management.MBeanException;
import javax.management.MBeanInfo;
import javax.management.MBeanServerConnection;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.ReflectionException;
import javax.management.RuntimeOperationsException;
import javax.management.modelmbean.ModelMBeanInfo;
/** This class implements a generic AMXMBeanInterface MBean which is connected to a possibly
* remote MBeanServerConnection (note that MBeanServer isA MBeanServerConnection,
* so we can actually create an AMXClientImpl simply by using the MBeanServer
* from the mom: this is useful for testing).
* <P>
* Note that this version of the AMXMBeanInterface API provides a generic get/set API that
* is identical to DynamicMBean, except that it only throws unchecked exceptions.
* This is far more convenient in practice than the JMX-standard checked exceptions.
*
* @author ken
*/
public class AMXClient implements AMXMBeanInterface {
private static ObjectName makeObjectName( String str ) {
try {
return new ObjectName(str);
} catch (MalformedObjectNameException ex) {
return null ;
}
}
/** Special object name used to represent a NULL objectName result.
*/
public static final ObjectName NULL_OBJECTNAME = makeObjectName(
"null:type=Null,name=Null" ) ;
private MBeanServerConnection server ;
private ObjectName oname ;
@Override
public boolean equals( Object obj ) {
if (this == obj) {
return true ;
}
if (!(obj instanceof AMXClient)) {
return false ;
}
AMXClient other = (AMXClient)obj ;
return oname.equals( other.oname ) ;
}
@Override
public int hashCode() {
int hash = 5;
hash = 47 * hash + (this.oname != null ? this.oname.hashCode() : 0);
return hash;
}
@Override
public String toString() {
return "AMXClient[" + oname + "]" ;
}
private <T> T fetchAttribute( String name, Class<T> type ) {
try {
Object obj = server.getAttribute( oname, name ) ;
if (NULL_OBJECTNAME.equals( obj )) {
return null ;
} else {
return type.cast( obj ) ;
}
} catch (JMException exc) {
throw new GmbalException( "Exception in fetchAttribute", exc ) ;
} catch (IOException exc) {
throw new GmbalException( "Exception in fetchAttribute", exc ) ;
}
}
public AMXClient( MBeanServerConnection server,
ObjectName oname ) {
this.server = server ;
this.oname = oname ;
}
private AMXClient makeAMX( ObjectName on ) {
if (on == null) {
return null ;
}
return new AMXClient( this.server, on ) ;
}
public String getName() {
return fetchAttribute( "Name", String.class ) ;
}
public Map<String,?> getMeta() {
try {
ModelMBeanInfo mbi = (ModelMBeanInfo) server.getMBeanInfo( oname );
Descriptor desc = mbi.getMBeanDescriptor() ;
Map<String,Object> result = new HashMap<String,Object>() ;
for (String str : desc.getFieldNames()) {
result.put( str, desc.getFieldValue( str )) ;
}
return result ;
} catch (MBeanException ex) {
throw new GmbalException( "Exception in getMeta", ex ) ;
} catch (RuntimeOperationsException ex) {
throw new GmbalException( "Exception in getMeta", ex ) ;
} catch (InstanceNotFoundException ex) {
throw new GmbalException( "Exception in getMeta", ex ) ;
} catch (IntrospectionException ex) {
throw new GmbalException( "Exception in getMeta", ex ) ;
} catch (ReflectionException ex) {
throw new GmbalException( "Exception in getMeta", ex ) ;
} catch (IOException ex) {
throw new GmbalException( "Exception in getMeta", ex ) ;
}
}
public AMXClient getParent() {
ObjectName res = fetchAttribute( "Parent", ObjectName.class ) ;
return makeAMX( res ) ;
}
public AMXClient[] getChildren() {
ObjectName[] onames = fetchAttribute( "Children",
ObjectName[].class ) ;
return makeAMXArray( onames ) ;
}
private AMXClient[] makeAMXArray( ObjectName[] onames ) {
AMXClient[] result = new AMXClient[onames.length] ;
int ctr=0 ;
for (ObjectName on : onames ) {
result[ctr++] = makeAMX( on ) ;
}
return result ;
}
public Object getAttribute(String attribute) {
try {
return server.getAttribute(oname, attribute);
} catch (MBeanException ex) {
throw new GmbalException( "Exception in getAttribute", ex ) ;
} catch (AttributeNotFoundException ex) {
throw new GmbalException( "Exception in getAttribute", ex ) ;
} catch (ReflectionException ex) {
throw new GmbalException( "Exception in getAttribute", ex ) ;
} catch (InstanceNotFoundException ex) {
throw new GmbalException( "Exception in getAttribute", ex ) ;
} catch (IOException ex) {
throw new GmbalException( "Exception in getAttribute", ex ) ;
}
}
public void setAttribute(String name, Object value ) {
Attribute attr = new Attribute( name, value ) ;
setAttribute( attr ) ;
}
public void setAttribute(Attribute attribute) {
try {
server.setAttribute(oname, attribute);
} catch (InstanceNotFoundException ex) {
throw new GmbalException( "Exception in setAttribute", ex ) ;
} catch (AttributeNotFoundException ex) {
throw new GmbalException( "Exception in setAttribute", ex ) ;
} catch (InvalidAttributeValueException ex) {
throw new GmbalException( "Exception in setAttribute", ex ) ;
} catch (MBeanException ex) {
throw new GmbalException( "Exception in setAttribute", ex ) ;
} catch (ReflectionException ex) {
throw new GmbalException( "Exception in setAttribute", ex ) ;
} catch (IOException ex) {
throw new GmbalException( "Exception in setAttribute", ex ) ;
}
}
public AttributeList getAttributes(String[] attributes) {
try {
return server.getAttributes(oname, attributes);
} catch (InstanceNotFoundException ex) {
throw new GmbalException( "Exception in getAttributes", ex ) ;
} catch (ReflectionException ex) {
throw new GmbalException( "Exception in getAttributes", ex ) ;
} catch (IOException ex) {
throw new GmbalException( "Exception in getAttributes", ex ) ;
}
}
public AttributeList setAttributes(AttributeList attributes) {
try {
return server.setAttributes(oname, attributes);
} catch (InstanceNotFoundException ex) {
throw new GmbalException( "Exception in setAttributes", ex ) ;
} catch (ReflectionException ex) {
throw new GmbalException( "Exception in setAttributes", ex ) ;
} catch (IOException ex) {
throw new GmbalException( "Exception in setAttributes", ex ) ;
}
}
public Object invoke(String actionName, Object[] params, String[] signature)
throws MBeanException, ReflectionException {
try {
return server.invoke(oname, actionName, params, signature);
} catch (InstanceNotFoundException ex) {
throw new GmbalException( "Exception in invoke", ex ) ;
} catch (IOException ex) {
throw new GmbalException( "Exception in invoke", ex ) ;
}
}
public MBeanInfo getMBeanInfo() {
try {
return server.getMBeanInfo(oname);
} catch (InstanceNotFoundException ex) {
throw new GmbalException( "Exception in invoke", ex ) ;
} catch (IntrospectionException ex) {
throw new GmbalException( "Exception in invoke", ex ) ;
} catch (ReflectionException ex) {
throw new GmbalException( "Exception in invoke", ex ) ;
} catch (IOException ex) {
throw new GmbalException( "Exception in invoke", ex ) ;
}
}
public ObjectName objectName() {
return oname ;
}
}