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package com.sun.ejb.spi.distributed;
import com.sun.ejb.containers.EjbContainerUtil;
import com.sun.ejb.containers.EJBTimerService;
import com.sun.enterprise.transaction.api.RecoveryResourceRegistry;
import com.sun.enterprise.transaction.spi.RecoveryEventListener;
import org.glassfish.ejb.api.DistributedEJBTimerService;
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 org.jvnet.hk2.annotations.Inject;
import org.jvnet.hk2.component.PostConstruct;
import java.util.logging.Logger;
import java.util.logging.Level;
@Service
public class DistributedEJBTimerServiceImpl
implements DistributedEJBTimerService, RecoveryEventListener, PostConstruct, CallBack {
@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);
}
}
// Do DB read before timeout in a cluster
setPerformDBReadBeforeTimeout(true);
// Register for transaction recovery events
recoveryResourceRegistry.addEventListener(this);
}
}
@Override
public void processNotification(Signal signal) {
Logger logger = ejbContainerUtil.getLogger();
if (signal instanceof PlannedShutdownSignal) {
if (logger.isLoggable(Level.FINE)) {
logger.log(Level.FINE, "[DistributedEJBTimerServiceImpl] 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, "[DistributedEJBTimerServiceImpl] 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
}
Logger logger = ejbContainerUtil.getLogger();
if (logger.isLoggable(Level.INFO)) {
logger.log(Level.INFO, "[DistributedEJBTimerServiceImpl] afterRecovery event for instance " + instance);
}
if (instance != null && !instance.equals(ejbContainerUtil.getServerEnvironment().getInstanceName())) {
if (success) {
migrateTimers(instance);
} else {
logger.log(Level.WARNING, "[DistributedEJBTimerServiceImpl] Cannot perform automatic timer migration after failed transaction recovery");
}
}
}
/**
*--------------------------------------------------------------
* Methods implemented for DistributedEJBTimerService
*--------------------------------------------------------------
*/
public int migrateTimers( String serverId ) {
Logger logger = ejbContainerUtil.getLogger();
if (logger.isLoggable(Level.INFO)) {
logger.log(Level.INFO, "[DistributedEJBTimerServiceImpl] migrating timers from " + serverId);
}
int result = 0;
EJBTimerService ejbTimerService = ejbContainerUtil.getEJBTimerService();
if (ejbTimerService != null) {
result = ejbTimerService.migrateTimers( serverId );
} else {
//throw new IllegalStateException("EJB Timer service is null. "
//+ "Cannot migrate timers for: " + serverId);
}
return result;
}
public String[] listTimers( String[] serverIds ) {
String[] result = new String[serverIds.length];
EJBTimerService ejbTimerService = ejbContainerUtil.getEJBTimerService();
if (ejbTimerService != null) {
result = ejbTimerService.listTimers( serverIds );
} else {
//FIXME: Should throw IllegalStateException
for (int i=0; i<serverIds.length; i++) {
result[i] = "0";
}
//throw new com.sun.enterprise.admin.common.exception.AFException("EJB Timer service is null. "
//+ "Cannot list timers.");
}
return result;
}
public void setPerformDBReadBeforeTimeout( boolean defaultDBReadValue ) {
// Set it if and when EJBTimerService is available
ejbContainerUtil.setEJBTimerServiceDBReadBeforeTimeout(defaultDBReadValue);
}
} //DistributedEJBTimerServiceImpl.java