/*
Copyright (c) 2003-2009 ITerative Consulting Pty Ltd. All Rights Reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted
provided that the following conditions are met:
o Redistributions of source code must retain the above copyright notice, this list of conditions and
the following disclaimer.
o Redistributions in binary form must reproduce the above copyright notice, this list of conditions
and the following disclaimer in the documentation and/or other materials provided with the distribution.
o This jcTOOL Helper Class software, whether in binary or source form may not be used within,
or to derive, any other product without the specific prior written permission of the copyright holder
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package SystemMonitor;
import java.lang.management.ThreadMXBean;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import org.springframework.jmx.export.naming.ObjectNamingStrategy;
import Framework.ErrorMgr;
import Framework.UsageException;
import GenericDBMS.TransactionMgr;
import GenericDBMS.TransactionMgrStats;
/**
* The TransactionMgrAgent class represents a Transaction Manager MBean, which monitors the state of transactions
* @since 1 Jan 2008
*
*/
@SuppressWarnings("serial")
public class TransactionMgrAgent extends SystemAgent {
private CounterInst activeCount;
private CounterInst beginCount;
private CounterInst commitCount;
private CounterInst rollbackCount;
private CounterInst dataSourcesCount;
public TransactionMgrAgent(ObjectNamingStrategy strategy) {
super(strategy);
try {
ObjectName objectName = SystemAgent.getStrategy().getObjectName(this, "TransactionMgrAgent");
this.setObjectName(objectName);
} catch (MalformedObjectNameException e) {
UsageException errorVar = new UsageException("Cannot create TransactionMgrAgent", e);
ErrorMgr.addError(errorVar);
throw errorVar;
} catch (NullPointerException e) {
UsageException errorVar = new UsageException("Cannot create TransactionMgrAgent", e);
ErrorMgr.addError(errorVar);
throw errorVar;
}
this.setState(Constants.SM_ONLINE);
this.setNameAsString("TransactionMgrAgent");
int systemID = getLastIID();
this.setMOType(ThreadMXBean.class);
activeCount = new CounterInst();
activeCount.getName().setValue("Active");
activeCount.clearValue();
activeCount.setInstrumentID(systemID + 1);
this.addInstrument(activeCount);
beginCount = new CounterInst();
beginCount.getName().setValue("Begin");
beginCount.clearValue();
beginCount.setInstrumentID(systemID + 2);
this.addInstrument(beginCount);
commitCount = new CounterInst();
commitCount.getName().setValue("Commit");
commitCount.clearValue();
commitCount.setInstrumentID(systemID + 3);
this.addInstrument(commitCount);
rollbackCount = new CounterInst();
rollbackCount.getName().setValue("Rollback");
rollbackCount.clearValue();
rollbackCount.setInstrumentID(systemID + 4);
this.addInstrument(rollbackCount);
dataSourcesCount = new CounterInst();
dataSourcesCount.getName().setValue("DataSources");
dataSourcesCount.clearValue();
dataSourcesCount.setInstrumentID(systemID + 5);
this.addInstrument(dataSourcesCount);
}
@Override
public void updateInstrument(Instrument inst) {
TransactionMgrStats stats = TransactionMgr.getStatistics();
beginCount.clearValue();
beginCount.increment(stats.getBeginCount());
commitCount.clearValue();
commitCount.increment(stats.getCommitCount());
rollbackCount.clearValue();
rollbackCount.increment(stats.getRollbackCount());
activeCount.clearValue();
activeCount.increment(stats.getActiveCount());
dataSourcesCount.clearValue();
dataSourcesCount.increment(stats.getDataSourcesManaged());
super.updateInstrument(inst);
}
private int lastIID = initialIID;
@Override
public int getLastIID() {
return lastIID;
}
@Override
public void setLastIID(int id) {
this.lastIID = id;
}
@Override
public String getDescription() {
return "Provides facilities to monitor transactions that have occurred within the system";
}
}