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package org.glassfish.ejb.persistent.timer;
import com.sun.ejb.PersistentTimerService;
import com.sun.ejb.containers.EjbContainerUtil;
import com.sun.ejb.containers.EjbContainerUtilImpl;
import com.sun.ejb.containers.EJBTimerService;
import com.sun.enterprise.transaction.api.RecoveryResourceRegistry;
import com.sun.enterprise.transaction.spi.RecoveryEventListener;
import org.glassfish.gms.bootstrap.GMSAdapter;
import org.glassfish.gms.bootstrap.GMSAdapterService;
import com.sun.enterprise.ee.cms.core.CallBack;
import com.sun.enterprise.ee.cms.core.GMSConstants;
import com.sun.enterprise.ee.cms.core.PlannedShutdownSignal;
import com.sun.enterprise.ee.cms.core.Signal;
import org.jvnet.hk2.annotations.Service;
import javax.inject.Inject;
import org.glassfish.hk2.api.PostConstruct;
import java.util.logging.Logger;
import java.util.logging.Level;
@Service
public class DistributedEJBTimerService
implements PersistentTimerService, RecoveryEventListener, PostConstruct, CallBack {
private static Logger logger = EjbContainerUtilImpl.getLogger();
@Inject
private EjbContainerUtil ejbContainerUtil;
@Inject
GMSAdapterService gmsAdapterService;
@Inject
RecoveryResourceRegistry recoveryResourceRegistry;
public void postConstruct() {
if (!ejbContainerUtil.isDas()) {
if (gmsAdapterService != null) {
GMSAdapter gmsAdapter = gmsAdapterService.getGMSAdapter();
if (gmsAdapter != null) {
// We only register interest in the Planned Shutdown event here.
// Because of the dependency between transaction recovery and
// timer migration, the timer migration operation during an
// unexpected failure is initiated by the transaction recovery
// subsystem.
gmsAdapter.registerPlannedShutdownListener(this);
}
}
// Register for transaction recovery events
recoveryResourceRegistry.addEventListener(this);
}
}
public void initPersistentTimerService(String target) {
PersistentEJBTimerService.initEJBTimerService(target);
}
@Override
public void processNotification(Signal signal) {
if (signal instanceof PlannedShutdownSignal) {
if (logger.isLoggable(Level.FINE)) {
logger.log(Level.FINE, "[DistributedEJBTimerService] planned shutdown signal: " + signal);
}
PlannedShutdownSignal pssig = (PlannedShutdownSignal)signal;
if (pssig.getEventSubType() == GMSConstants.shutdownType.INSTANCE_SHUTDOWN) {
migrateTimers(signal.getMemberToken());
}
} else {
if (logger.isLoggable(Level.FINE)) {
logger.log(Level.FINE, "[DistributedEJBTimerService] ignoring signal: " + signal);
}
}
}
@Override
public void beforeRecovery(boolean delegated, String instance) {}
@Override
public void afterRecovery(boolean success, boolean delegated, String instance) {
if (!delegated) {
return; // nothing to do
}
if (logger.isLoggable(Level.INFO)) {
logger.log(Level.INFO, "[DistributedEJBTimerService] afterRecovery event for instance " + instance);
}
if (instance != null && !instance.equals(ejbContainerUtil.getServerEnvironment().getInstanceName())) {
if (success) {
migrateTimers(instance);
} else {
logger.log(Level.WARNING, "[DistributedEJBTimerService] Cannot perform automatic timer migration after failed transaction recovery");
}
}
}
/**
*--------------------------------------------------------------
* Private methods for DistributedEJBTimerService
*--------------------------------------------------------------
*/
private int migrateTimers( String serverId ) {
if (logger.isLoggable(Level.INFO)) {
logger.log(Level.INFO, "[DistributedEJBTimerService] migrating timers from " + serverId);
}
int result = 0;
// Force loading TimerService if it hadn't been started
EJBTimerService ejbTimerService = EJBTimerService.getEJBTimerService();
if (ejbTimerService != null && ejbTimerService.isPersistent()) {
result = ejbTimerService.migrateTimers( serverId );
} else {
//throw new IllegalStateException("EJB Timer service is null. "
//+ "Cannot migrate timers for: " + serverId);
}
return result;
}
} //DistributedEJBTimerService.java