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package com.sun.enterprise.management.monitor.stats;
import com.sun.enterprise.management.monitor.*;
import javax.management.InstanceNotFoundException;
import javax.management.j2ee.statistics.Statistic;
import com.sun.appserv.management.j2ee.statistics.MapStatistic;
import com.sun.appserv.management.j2ee.statistics.MapStatisticImpl;
import com.sun.appserv.management.j2ee.statistics.StatisticImpl;
import com.sun.appserv.management.j2ee.statistics.StatisticFactory;
import com.sun.appserv.management.util.misc.ExceptionUtil;
/**
Base implementation class for LB Monitoring MBeans that provide Stats.
*/
public abstract class CustomMonitoringStatsImplBase extends MonitoringStatsImplBase {
public CustomMonitoringStatsImplBase(String j2eeType) {
super(j2eeType);
}
/**
Get all Statistics from the delegate (our only available call API).
Statistic names are translated appropriately.
*/
protected Statistic[] getStatisticsFromImpl(CustomStatsImpl customStatsImpl) {
try {
final Statistic[] statistics = getStatisticsFromImplRaw(customStatsImpl);
// translate the names to be the ones we expose in MBeanInfo
for(int i = 0; i < statistics.length; ++i) {
final Statistic origStatistic = statistics[i];
final MapStatistic m = new MapStatisticImpl(origStatistic);
final String convertedName = originalToDerivedStatisticName(origStatistic.getName());
if (! convertedName.equals(origStatistic.getName()))
m.setName(convertedName);
final Class<? extends Statistic> theClass =
StatisticFactory.getInterface(origStatistic);
assert(theClass != null);
// this will create one which implements the requisite interfaces
statistics[ i ] = StatisticFactory.create(theClass, m.asMap());
assert(theClass.isAssignableFrom(statistics[ i ].getClass()));
}
return(statistics);
} catch (Exception e) {
final Throwable rootCause = ExceptionUtil.getRootCause(e);
if (!(rootCause instanceof InstanceNotFoundException))
// don't rethrow--will make MBeanServer unuseable as it has a bug if we throw
// an exception of of getMBeanInfo() which halts any further processing of the query
//NOTE: WARNING_CHANGED_TO_FINE
logWarning("Can't get Statistics from impl of " + getObjectName() +
"\n" + rootCause.getMessage() + "\n" + ExceptionUtil.getStackTrace(rootCause));
throw new RuntimeException(e);
}
}
protected Statistic[] getStatisticsFromImplRaw(CustomStatsImpl impl) {
try {
final Statistic[] statistics = impl.getStatistics();
return statistics;
} catch (Exception e) {
final Throwable rootCause = ExceptionUtil.getRootCause( e );
logWarning( "CustomMonitoringStatsImplBase: " +
"the stats impl for the stats of AMX MBean " +
getObjectName() + " threw an exception: " + rootCause +
", stack = \n" + ExceptionUtil.getStackTrace( rootCause ) );
}
return new Statistic[0];
}
}