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/*
* $Header: /cvs/glassfish/admin/mbeans/src/java/com/sun/enterprise/admin/mbeans/DottedNameGetSetMBeanImpl.java,v 1.4 2007/05/05 05:24:09 tcfujii Exp $
* $Revision: 1.4 $
* $Date: 2007/05/05 05:24:09 $
*/
package com.sun.enterprise.admin.mbeans;
import com.sun.enterprise.admin.dottedname.*;
import javax.management.*;
import java.lang.reflect.Array;
/*
MBean which supports get/set CLI commands using dotted names
*/
public class DottedNameGetSetMBeanImpl
extends StandardMBean implements DottedNameGetSetMBean
{
final DottedNameGetSetForConfig mConfigImpl;
final DottedNameGetSetForMonitoring mMonitoringImpl;
final DottedNameServerInfoCache mServerInfo;
long mTimeOfLastCall;
/*
Instantiate with a reference to an MBeanServerConnection which will be used
as the server when searching for required objects (which is possibly different
than the MBeanServer in which this object will be registered).
Due to a bug in the server startup sequence, this is the only allowed
constructor; avoiding the bug requires the SunoneInterceptor as 'conn'.
Ideally the only constructor would be one that takes no arguments, and obtains
its MBeanServerConnection from MBeanServerRegistration.preRegister().
*/
public
DottedNameGetSetMBeanImpl(
final MBeanServerConnection conn,
final DottedNameRegistry registry,
final DottedNameRegistry monitoringRegistry )
throws NotCompliantMBeanException, MalformedObjectNameException
{
super( DottedNameGetSet.class );
mServerInfo = new DottedNameServerInfoCache( createServerInfo( conn ) );
mConfigImpl = new DottedNameGetSetForConfig( conn, registry, mServerInfo );
mMonitoringImpl = new DottedNameGetSetForMonitoring( conn, monitoringRegistry, mServerInfo );
}
// clear the DottedNameFactory every 10 minutes
static private final long CLEAR_CACHE_INTERVAL_MILLIS = 10 * 60 * 1000;
protected void
pre()
{
mServerInfo.refresh();
final long now = System.currentTimeMillis();
if ( (now - mTimeOfLastCall) > CLEAR_CACHE_INTERVAL_MILLIS )
{
DottedNameFactory.getInstance().clear();
}
mTimeOfLastCall = now;
}
// this method exists so unit test code can override it
protected DottedNameServerInfo
createServerInfo( final MBeanServerConnection conn )
{
return( new DottedNameServerInfoImpl( conn ) );
}
protected boolean
checkGetResults( final Object[] results )
{
boolean good = true;
for( int i = 0; i < results.length; ++i )
{
final Object o = results[ i ];
if ( ! (o instanceof Attribute ||
o instanceof Attribute[] ||
o instanceof Exception ) )
{
//System.out.println( "checkGetResults: object has class: " + o.getClass().getName() );
good = false;
break;
}
}
return( good );
}
protected boolean
checkSetResults( final Object[] results )
{
boolean good = true;
for( int i = 0; i < results.length; ++i )
{
final Object o = results[ i ];
if ( ! (o instanceof Attribute ||
o instanceof Exception ) )
{
good = false;
break;
}
}
return( good );
}
/*
Return true if every element of the array has *exactly* the same class.
*/
private boolean
hasIdenticalElementClasses( final Object [] a )
{
boolean isUniform = true;
if ( a.length > 0 )
{
final Class matchType = a[ 0 ].getClass();
for( int i = 1; i < a.length; ++i )
{
if ( a[ i ].getClass() != matchType )
{
isUniform = false;
break;
}
}
}
return( isUniform );
}
/*
If every element of the array has the same class, return a new array whose type specifies that
class, otherwise return the original array.
*/
protected Object []
convertArrayType( final Object [] input )
{
Object [] result = input;
if ( hasIdenticalElementClasses( input ) && input.length != 0 )
{
result = (Object [])Array.newInstance( input[ 0 ].getClass(), input.length );
for( int i = 0; i < input.length; ++i )
{
result[ i ] = input[ i ];
}
}
return( result );
}
protected Object []
dottedNameAnyGet( DottedNameGetSetMBeanBase impl, final String [] names )
{
pre();
final Object [] results = impl.dottedNameGet( names );
assert( checkGetResults( results ) );
assert( results.length == names.length );
return( convertArrayType( results ) );
}
protected Object
dottedNameAnyGet( DottedNameGetSetMBeanBase impl, final String name )
{
final Object [] results = dottedNameAnyGet( impl, new String [] { name } );
return( results[ 0 ] );
}
public Object []
dottedNameGet( final String [] names )
{
return( dottedNameAnyGet( mConfigImpl, names ) );
}
public Object
dottedNameGet( final String name )
{
final Object result = dottedNameAnyGet( mConfigImpl, name );
return( result );
}
public Object []
dottedNameSet( final String [] nameValuePairs )
{
pre();
Object [] results = mConfigImpl.dottedNameSet( nameValuePairs );
assert( checkSetResults( results ) );
assert( results.length == nameValuePairs.length );
return( convertArrayType( results ) );
}
public Object
dottedNameSet( final String nameValuePair )
{
final Object [] results = dottedNameSet( new String [] { nameValuePair } );
return( results[ 0 ] );
}
public String []
dottedNameList( final String [] namePrefixes )
{
pre();
return( mConfigImpl.dottedNameList( namePrefixes ) );
}
//------------------------- monitoring --------------------------
public Object []
dottedNameMonitoringGet( final String [] names )
{
return( dottedNameAnyGet( mMonitoringImpl, names ) );
}
public Object
dottedNameMonitoringGet( final String name )
{
return( dottedNameAnyGet( mMonitoringImpl, name ) );
}
public String []
dottedNameMonitoringList( final String [] namePrefixes )
{
pre();
return( mMonitoringImpl.dottedNameList( namePrefixes ) );
}
}
/*
Implementing subclass for monitoring dotted names
*/
final class DottedNameGetSetForMonitoring extends DottedNameGetSetMBeanBase
{
final DottedNameResolver mMonitoringResolver;
public
DottedNameGetSetForMonitoring(
final MBeanServerConnection conn,
final DottedNameRegistry registry,
final DottedNameServerInfo serverInfo )
throws MalformedObjectNameException
{
super( conn, registry, serverInfo );
// DottedNameResolver for monitoring dotted names does NOT need to account for aliases
mMonitoringResolver = new DottedNameResolverFromRegistry( registry );
}
DottedNameResolver
getResolver( )
{
return( mMonitoringResolver );
}
DottedNameQuery
createQuery( )
{
// no aliasing is done; the registry implements query directly
return( mRegistry );
}
}
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