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package com.sun.enterprise.transaction;
import com.sun.enterprise.config.serverbeans.Config;
import java.util.*;
import java.util.logging.*;
import java.beans.PropertyChangeEvent;
import com.sun.logging.LogDomains;
import com.sun.enterprise.util.i18n.StringManager;
import org.jvnet.hk2.annotations.Service;
import javax.inject.Inject;
import javax.inject.Named;
import org.jvnet.hk2.config.ConfigListener;
import org.jvnet.hk2.config.UnprocessedChangeEvent;
import org.jvnet.hk2.config.UnprocessedChangeEvents;
import org.jvnet.hk2.config.types.Property;
import com.sun.enterprise.config.serverbeans.ModuleMonitoringLevels;
import com.sun.enterprise.transaction.config.TransactionService;
import com.sun.enterprise.config.serverbeans.ServerTags;
import com.sun.enterprise.transaction.api.JavaEETransactionManager;
import org.glassfish.api.admin.ServerEnvironment;
import org.glassfish.hk2.api.PostConstruct;
import org.glassfish.hk2.api.ServiceLocator;
import org.jvnet.hk2.config.ConfigSupport;
import org.jvnet.hk2.config.ObservableBean;
/**
* ConfigListener class for TransactionService and TransactionService
* monitoring level changes
*
* @author Marina Vatkina
*/
@Service
public class TransactionServiceConfigListener implements ConfigListener, PostConstruct {
private static final Logger _logger = LogDomains.getLogger(
TransactionServiceConfigListener.class, LogDomains.JTA_LOGGER);
private TransactionService ts;
@Inject
private ServiceLocator habitat;
private JavaEETransactionManager tm;
// Sting Manager for Localization
private static StringManager sm
= StringManager.getManager(TransactionServiceConfigListener.class);
/**
* Clears the transaction associated with the caller thread
*/
public void setTM(JavaEETransactionManager tm) {
this.tm = tm;
}
@Override
public void postConstruct() {
// Listen to monitoring level changes
Config c = habitat.getService(Config.class, ServerEnvironment.DEFAULT_INSTANCE_NAME);
ts = c.getExtensionByType(TransactionService.class);
ModuleMonitoringLevels mml = c.getMonitoringService().getModuleMonitoringLevels();
((ObservableBean)ConfigSupport.getImpl(mml)).addListener(this);
}
/****************************************************************************/
/** Implementation of org.jvnet.hk2.config.ConfigListener *********************/
/****************************************************************************/
@Override
public UnprocessedChangeEvents changed(PropertyChangeEvent[] events) {
// Events that we can't process now because they require server restart.
List<UnprocessedChangeEvent> unprocessedEvents = new ArrayList<UnprocessedChangeEvent>();
for (PropertyChangeEvent event : events) {
String eventName = event.getPropertyName();
Object oldValue = event.getOldValue();
Object newValue = event.getNewValue();
boolean accepted = true;
_logger.log(Level.FINE, "Got TransactionService change event ==== {0} {1} {2} {3}",
new Object[]{event.getSource(), eventName, oldValue, newValue});
if (oldValue != null && oldValue.equals(newValue)) {
_logger.log(Level.FINE, "Event {0} did not change existing value of {1}",
new Object[]{eventName, oldValue});
continue;
}
if (event.getSource() instanceof ModuleMonitoringLevels) {
if (eventName.equals(ServerTags.TRANSACTION_SERVICE)) {
String newlevel = newValue.toString();
_logger.log(Level.FINE, "Changing transaction monitoring level");
if ("OFF".equals(newlevel)) {
tm.setMonitoringEnabled(false);
} else if ("LOW".equals(newlevel) || "HIGH".equals(newlevel)) {
tm.setMonitoringEnabled(true);
}
} // else skip
} else if (eventName.equals(ServerTags.TIMEOUT_IN_SECONDS)) {
try {
tm.setDefaultTransactionTimeout(Integer.parseInt((String)newValue,10));
_logger.log(Level.FINE, " Transaction Timeout interval event processed for: {0}", newValue);
} catch (Exception ex) {
_logger.log(Level.WARNING,"transaction.reconfig_txn_timeout_failed",ex);
} // timeout-in-seconds
} else if (eventName.equals(ServerTags.KEYPOINT_INTERVAL)
|| eventName.equals(ServerTags.RETRY_TIMEOUT_IN_SECONDS)) {
tm.handlePropertyUpdate(eventName, newValue);
_logger.log(Level.FINE, "{0} reconfig event processed for new value: {1}",
new Object[]{eventName, newValue});
} else if (event.getPropertyName().equals("value")) {
eventName = ((Property)event.getSource()).getName();
_logger.log(Level.FINE, "Got Property change event for {0}", eventName);
if (eventName.equals("purge-cancelled-transactions-after")) {
String v = (String)newValue;
if (v == null || v.length() == 0) {
tm.setPurgeCancelledTtransactionsAfter(0);
} else {
tm.setPurgeCancelledTtransactionsAfter(Integer.parseInt(v,10));
}
} else {
// Not handled dynamically. Restart is required.
accepted = false;
}
} else if (event.getPropertyName().equals("name")
|| event.getPropertyName().equals("property")) {
// skip - means a new property added, was processed above as "value".
_logger.log(Level.FINE, "...skipped");
} else {
// Not handled dynamically. Restart is required.
accepted = false;
}
if (!accepted) {
String msg = sm.getString("enterprise_distributedtx.restart_required",
eventName);
_logger.log(Level.INFO, msg);
unprocessedEvents.add(new UnprocessedChangeEvent(event, msg));
}
}
return (unprocessedEvents.size() > 0)
? new UnprocessedChangeEvents(unprocessedEvents) : null;
}
}