/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.appserv.management.j2ee.statistics;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.Collection;
import java.util.HashMap;
import java.io.Serializable;
import java.lang.reflect.Method;
import javax.management.openmbean.CompositeData;
import javax.management.openmbean.CompositeType;
import javax.management.j2ee.statistics.Stats;
import javax.management.j2ee.statistics.Statistic;
import com.sun.appserv.management.util.j2ee.J2EEUtil;
import com.sun.appserv.management.util.misc.GSetUtil;
/**
Generic implementation of Stats based on either a Map or a {@link CompositeData}.
There are two ways to implement a specific type of Stats object:
<ul>
<li>
The subclass extends this base class, using getValue() to fetch
the requested value from the Map maintained by this class.
</li>
<li>
Create a proxy implementing the desired Stats subclass interface and use
an instance of this class as the {@link java.lang.reflect.InvocationHandler}.
</li>
</ul>
In addition to the standard JSR 77 Stats interfaces,
the following specific Stats interfaces are available:
<ul>
<li>{@link com.sun.appserv.management.monitor.statistics.AltJDBCConnectionPoolStats}</li>
<li>{@link com.sun.appserv.management.monitor.statistics.AltServletStats}</li>
<li>{@link com.sun.appserv.management.monitor.statistics.ConnectionManagerStats}</li>
<li>{@link com.sun.appserv.management.monitor.statistics.ConnectionPoolStats}</li>
<li>{@link com.sun.appserv.management.monitor.statistics.ConnectorConnectionPoolStats}</li>
<li>{@link com.sun.appserv.management.monitor.statistics.EJBCacheStats}</li>
<li>{@link com.sun.appserv.management.monitor.statistics.EJBMethodStats}</li>
<li>{@link com.sun.appserv.management.monitor.statistics.EJBPoolStats}</li>
<li>{@link com.sun.appserv.management.monitor.statistics.HTTPListenerStats}</li>
<li>{@link com.sun.appserv.management.monitor.statistics.HTTPServiceVirtualServerStats}</li>
<li>{@link com.sun.appserv.management.monitor.statistics.KeepAliveStats}</li>
<li>{@link com.sun.appserv.management.monitor.statistics.ThreadPoolStats}</li>
<li>{@link com.sun.appserv.management.monitor.statistics.TransactionServiceStats}</li>
<li>{@link com.sun.appserv.management.monitor.statistics.WebModuleVirtualServerStats}</li>
</ul>
*/
public class StatsImpl
extends MapGetterInvocationHandler<Statistic>
implements Stats, Serializable
{
static final long serialVersionUID = 6228973710059979557L;
/**
Create a Stats from a CompositeData, whose keys are the Statistic names
and whose values are CompositeData for the Statistic.
*/
public
StatsImpl( final CompositeData compositeData )
{
this( createStatisticsMap( compositeData ) );
}
private static Map<String,Statistic>
requireSerializableMap( final Map<String, Statistic> m )
{
// required every entry to be a Statistic
for( final Statistic s : m.values() )
{
if ( ! (s instanceof Statistic ) )
{
throw new IllegalArgumentException();
}
}
Map<String,Statistic> sMap = null;
if ( m instanceof Serializable )
{
sMap = m;
}
else
{
sMap = new HashMap<String, Statistic>( m );
}
return( sMap );
}
/**
Ensure that every Statistic is an instance of one of our acceptable
implementations. If you are adding a custom statistic, add that
statistic here in the if clause.
*/
private static Statistic
requireStatisticImpl( final Statistic statisticIn )
{
Statistic statisticOut = null;
if ( statisticIn instanceof CountStatisticImpl ||
statisticIn instanceof RangeStatisticImpl ||
statisticIn instanceof BoundedRangeStatisticImpl ||
statisticIn instanceof BoundaryStatisticImpl ||
statisticIn instanceof TimeStatisticImpl ||
statisticIn instanceof NumberStatisticImpl ||
statisticIn instanceof StringStatisticImpl
)
{
statisticOut = statisticIn;
}
else if ( statisticIn instanceof MapStatistic )
{
final Class<? extends Statistic> theInterface =
StatisticFactory.getInterface( statisticIn );
if ( theInterface != MapStatistic.class )
{
statisticOut = StatisticFactory.create( theInterface,
J2EEUtil.statisticToMap( statisticIn ) );
}
else if ( ! ( statisticIn instanceof MapStatisticImpl ) )
{
// it's a MapStatistic, but not our implementation.
statisticOut = new MapStatisticImpl( statisticIn );
}
}
else
{
// some weird kind, convert it to generic Statistic
assert( false ) :
"requireStatisticImpl: unsupported Statistic type of class " + statisticIn.getClass().getName();
statisticOut = new MapStatisticImpl( statisticIn );
}
return( statisticOut );
}
/**
Ensure that every Statistic is an instance of StatisticsImpl.
*/
private static Statistic[]
requireStatisticImpl( final Statistic[] statisticsIn )
{
boolean convert = false;
// avoid conversion if already in desired form
for( int i = 0; i < statisticsIn.length; ++i )
{
if ( ! (statisticsIn[ i ] instanceof MapStatistic ) )
{
convert = true;
break;
}
}
Statistic[] statisticsOut = null;
if ( convert )
{
statisticsOut = new Statistic[ statisticsIn.length ];
for( int i = 0; i <
statisticsIn.length; ++i )
{
statisticsOut[ i ] = requireStatisticImpl( statisticsIn[ i ] );
}
}
else
{
statisticsOut = statisticsIn;
}
return( statisticsOut );
}
/**
Create a Stats from a Map, whose keys are the Statistic names
and whose values are the Statistics.
*/
public
StatsImpl( final Map<String, Statistic> statisticsIn )
{
super( requireSerializableMap( statisticsIn ) );
}
/**
*/
public
StatsImpl( final Statistic[] statistics )
{
this( createStatisticsMap( statistics ) );
}
private static Map<String,Statistic>
createStatisticsMap( final CompositeData compositeData )
{
final CompositeType compositeType = compositeData.getCompositeType();
final Set keySet = compositeType.keySet();
final Iterator iter = keySet.iterator();
final Map<String,Statistic> map = new HashMap<String,Statistic>();
while ( iter.hasNext() )
{
final String name = (String)iter.next();
final CompositeData data = (CompositeData)compositeData.get( name );
map.put( name, StatisticFactory.create( data ) );
}
return( map );
}
private static Map<String,Statistic>
createStatisticsMap( final Statistic[] statistics )
{
final Map<String,Statistic> m = new HashMap<String,Statistic>();
for( int i = 0; i < statistics.length; ++i )
{
final Statistic statistic = requireStatisticImpl( statistics[ i ] );
if ( statistic != null )
{
m.put( statistic.getName(), statistic );
}
}
return( m );
}
public Statistic
getStatistic( String statisticName )
{
try
{
return( (Statistic)getValue( statisticName ) );
}
catch( Exception e )
{
final String msg = "NOT a Statistic: " + statisticName +
" of class " + getValue( statisticName ).getClass();
throw new RuntimeException( msg, e );
}
}
public String[]
getStatisticNames()
{
final Set<String> names = getMap().keySet();
return( GSetUtil.toStringArray( names ) );
}
public Statistic[]
getStatistics()
{
final Collection<Statistic> values = getMap().values();
final Statistic[] statistics = new Statistic[ values.size() ];
return( (Statistic[])values.toArray( statistics ) );
}
public String
toString()
{
final StringBuffer buf = new StringBuffer();
final Statistic[] statistics = getStatistics();
buf.append( statistics.length + " Statistics:\n" );
for( int i = 0; i < statistics.length; ++i )
{
buf.append( statistics[ i ].toString() + "\n");
}
return( buf.toString() );
}
public boolean
equals( final Object rhs )
{
boolean equals = false;
if ( rhs != null && rhs instanceof Stats )
{
final Stats stats = (Stats)rhs;
final String[] myNames = getStatisticNames();
final String[] rhsNames = stats.getStatisticNames();
if ( myNames.length == rhsNames.length )
{
equals = true;
for( int i = 0; i < myNames.length; ++i )
{
final String statisticName = myNames[ i ];
final Statistic myStatistic = getStatistic( statisticName );
final Statistic rhsStatistic = stats.getStatistic( statisticName );
if ( ! myStatistic.equals( rhsStatistic ) )
{
equals = false;
break;
}
}
}
}
return( equals );
}
public Object
invoke(
Object myProxy,
Method method,
Object[] args )
throws java.lang.Throwable
{
Object result = null;
final String methodName = method.getName();
final int numArgs = args == null ? 0 : args.length;
if ( numArgs == 0 && methodName.equals( "getStatisticNames" ) )
{
result = getStatisticNames();
}
else if ( numArgs == 0 && methodName.equals( "getStatistics" ) )
{
result = getStatistics();
}
else if ( numArgs == 1 && methodName.equals( "getStatistic" ) &&
method.getReturnType() == Statistic.class &&
method.getParameterTypes()[ 0 ] == String.class )
{
result = getStatistic( (String)args[ 0 ] );
}
else
{
result = super.invoke( myProxy, method, args );
}
return( result );
}
}
|
