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// Portions Copyright [2017-2021] [Payara Foundation and/or its affiliates]
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.config.serverbeans.Cluster;
import com.sun.enterprise.config.serverbeans.Domain;
import com.sun.enterprise.config.serverbeans.Server;
import com.sun.enterprise.transaction.api.RecoveryResourceRegistry;
import com.sun.enterprise.transaction.spi.RecoveryEventListener;
import fish.payara.enterprise.config.serverbeans.DeploymentGroup;
import fish.payara.nucleus.cluster.ClusterListener;
import fish.payara.nucleus.cluster.MemberEvent;
import fish.payara.nucleus.cluster.PayaraCluster;
import org.jvnet.hk2.annotations.Service;
import jakarta.inject.Inject;
import org.glassfish.hk2.api.PostConstruct;
import java.util.logging.Logger;
import java.util.logging.Level;
import org.glassfish.api.admin.ServerEnvironment;
@Service
public class DatabaseEJBTimerService
implements PersistentTimerService, RecoveryEventListener, PostConstruct, ClusterListener {
private static Logger logger = EjbContainerUtilImpl.getLogger();
@Inject
private EjbContainerUtil ejbContainerUtil;
@Inject
PayaraCluster cluster;
@Inject
Domain domain;
@Inject
ServerEnvironment serverEnv;
@Inject
RecoveryResourceRegistry recoveryResourceRegistry;
public void postConstruct() {
if (!ejbContainerUtil.isDas()) {
if (cluster != null && cluster.isEnabled()) {
cluster.addClusterListener(this);
}
// Register for transaction recovery events
recoveryResourceRegistry.addEventListener(this);
}
}
public void initPersistentTimerService(String target) {
PersistentEJBTimerService.initEJBTimerService(target);
}
@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 {0}", 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 {0}", serverId);
}
int result = 0;
// Force loading TimerService if it hadn't been started
EJBTimerService ejbTimerService = EJBTimerService.getPersistentTimerService();
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;
}
@Override
public void memberAdded(MemberEvent event) {
}
@Override
public void memberRemoved(MemberEvent event) {
// work out whether we should be attempting to migrate timers
String server = event.getServer();
String group = event.getServerGroup();
String thisServer = serverEnv.getInstanceName();
// check whether the server is any of the same clusters or deployment groups
// as the disappeared server and if so migrate timers
boolean migrate = false;
Cluster forServer = domain.getClusterForInstance(server);
if (forServer != null) {
for (Server instance : forServer.getInstances()) {
if (instance.getName().equals(thisServer)) {
// if I am in the same cluster
migrate = true;
break;
}
}
}
if (!migrate) {
for (DeploymentGroup deploymentGroup : domain.getDeploymentGroupsForInstance(server)) {
for (Server instance : deploymentGroup.getInstances()) {
if (instance.getName().equals(thisServer)) {
// if I am in the same cluster
migrate = true;
break;
}
}
}
}
if (migrate) {
migrateTimers(event.getServer());
}
}
} //DistributedEJBTimerService.java