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// Portions Copyright [2018-2021] [Payara Foundation and/or its affiliates]
package org.glassfish.ejb.admin.cli;
import com.sun.enterprise.admin.util.ClusterOperationUtil;
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.util.SystemPropertyConstants;
import com.sun.enterprise.util.i18n.StringManager;
import com.sun.logging.LogDomains;
import java.util.Arrays;
import java.util.List;
import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.ejb.containers.EJBTimerService;
import com.sun.ejb.containers.EjbContainerUtil;
import fish.payara.enterprise.config.serverbeans.DeploymentGroup;
import org.glassfish.api.ActionReport;
import org.glassfish.api.I18n;
import org.glassfish.api.Param;
import org.glassfish.api.admin.AdminCommand;
import org.glassfish.api.admin.AdminCommandContext;
import org.glassfish.api.admin.FailurePolicy;
import org.glassfish.api.admin.ParameterMap;
import org.glassfish.api.admin.RestEndpoint;
import org.glassfish.api.admin.RestEndpoints;
import org.glassfish.api.admin.RuntimeType;
import org.glassfish.common.util.admin.ParameterMapExtractor;
import org.glassfish.config.support.CommandTarget;
import org.glassfish.config.support.TargetType;
import org.glassfish.internal.api.Target;
import jakarta.inject.Inject;
import org.jvnet.hk2.annotations.Service;
import org.glassfish.hk2.api.PerLookup;
import org.glassfish.hk2.api.ServiceLocator;
@Service(name = "migrate-timers")
@PerLookup
@I18n("migrate.timers")
@org.glassfish.api.admin.ExecuteOn(value = {RuntimeType.INSTANCE}, ifNeverStarted = FailurePolicy.Error)
@TargetType(value = {CommandTarget.DAS, CommandTarget.CLUSTERED_INSTANCE, CommandTarget.STANDALONE_INSTANCE})
@RestEndpoints({
@RestEndpoint(configBean=Cluster.class,
opType=RestEndpoint.OpType.POST,
path="migrate-timers",
description="Migrate Timers"),
@RestEndpoint(configBean=DeploymentGroup.class,
opType=RestEndpoint.OpType.POST,
path="migrate-timers",
description="Migrate Timers")
})
public class MigrateTimers implements AdminCommand {
static StringManager localStrings = StringManager.getManager(MigrateTimers.class);
private static final Logger logger =
LogDomains.getLogger(MigrateTimers.class, LogDomains.EJB_LOGGER);
@Param(name = "target", optional = true, alias="destination",
defaultValue=SystemPropertyConstants.DEFAULT_SERVER_INSTANCE_NAME)
public String target;
private boolean needRedirect;
@Param(name = "fromServer", primary = true, optional = false)
public String fromServer;
@Inject
private EjbContainerUtil ejbContainerUtil;
@Inject
private Domain domain;
@Inject
Target targetUtil;
@Inject
private ServiceLocator habitat;
/**
* Executes the command
*
* @param context information
*/
@Override
public void execute(AdminCommandContext context) {
final ActionReport report = context.getActionReport();
String error = validate();
if (error != null) {
report.setMessage(error);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
return;
}
try {
if (needRedirect) {
needRedirect = false;
ParameterMapExtractor mapExtractor = new ParameterMapExtractor(this);
ParameterMap params = mapExtractor.extract();
logger.info(localStrings.getString("migrate.timers.redirect",
target, params.toCommaSeparatedString()));
ClusterOperationUtil.replicateCommand("migrate-timers",
FailurePolicy.Error, FailurePolicy.Error, FailurePolicy.Error,
Arrays.asList(new String[]{target}),
context, params, habitat);
return;
}
int totalTimersMigrated = migrateTimers(fromServer);
report.setMessage(localStrings.getString("migrate.timers.count",
totalTimersMigrated, fromServer, target));
report.setActionExitCode(ActionReport.ExitCode.SUCCESS);
} catch (Exception e) {
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setFailureCause(e);
}
}
private String validate() {
if (targetUtil.isCluster(target)) {
return validateCluster();
} else {
return validateDG();
}
}
private boolean isServerRunning(String serverName) {
Server server = domain.getServerNamed(serverName);
return (server == null) ? false : server.isRunning();
}
private int migrateTimers( String serverId ) {
if (logger.isLoggable(Level.INFO)) {
logger.log(Level.INFO, "[MigrateTimers] migrating timers from {0}", serverId);
}
int result = 0;
if (EJBTimerService.isPersistentTimerServiceLoaded()) {
EJBTimerService ejbTimerService = EJBTimerService.getPersistentTimerService();
if (ejbTimerService != null) {
result = ejbTimerService.migrateTimers( serverId );
}
}
return result;
}
private String validateCluster() {
//verify fromServer is clusteredInstance
Cluster fromServerCluster = targetUtil.getClusterForInstance(fromServer);
if(fromServerCluster == null) {
return localStrings.getString("migrate.timers.fromServerNotClusteredInstance", fromServer);
}
//if destinationServer is not set, or set to DAS, pick a running instance
//in the same cluster as fromServer
if(target.equals(SystemPropertyConstants.DEFAULT_SERVER_INSTANCE_NAME)) {
List instances = fromServerCluster.getInstances();
for(Server instance : instances) {
if(instance.isRunning() && !instance.getName().equals(fromServer)) {
target = instance.getName();
needRedirect = true;
}
}
//if destination is still DAS, that means no running server is available
if(target.equals(SystemPropertyConstants.DEFAULT_SERVER_INSTANCE_NAME)) {
return localStrings.getString("migrate.timers.noRunningInstanceToChoose",
target);
}
} else {
//verify fromServer and destinationServer are in the same cluster, and
//verify destination is a clustered instance.
Cluster destinationServerCluster = targetUtil.getClusterForInstance(target);
if (!fromServerCluster.getName().equals(destinationServerCluster.getName())) {
return localStrings.getString(
"migrate.timers.fromServerAndTargetNotInSameCluster", fromServer, target);
}
//verify destinationServer is running
if (!isServerRunning(target)) {
return localStrings.getString("migrate.timers.destinationServerIsNotAlive", target);
}
}
return null;
}
private String validateDG() {
List dgs = targetUtil.getDGForInstance(fromServer);
if(dgs == null) {
return localStrings.getString("migrate.timers.fromServerNotDG", fromServer);
}
//if destinationServer is not set, or set to DAS, pick a running instance
//in the same cluster as fromServer
if(target.equals(SystemPropertyConstants.DEFAULT_SERVER_INSTANCE_NAME)) {
List instances = dgs.get(0).getInstances();
for(Server instance : instances) {
if(instance.isRunning() && !instance.getName().equals(fromServer)) {
target = instance.getName();
needRedirect = true;
}
}
//if destination is still DAS, that means no running server is available
if(target.equals(SystemPropertyConstants.DEFAULT_SERVER_INSTANCE_NAME)) {
return localStrings.getString("migrate.timers.noRunningInstanceToChoose",
target);
}
} else {
//verify fromServer and destinationServer are in the same dg, and
boolean inSameDG = false;
for (DeploymentGroup dg : dgs) {
for (Server instance : dg.getInstances()) {
if (instance.getName().equals(target)) {
inSameDG = true;
break;
}
}
}
if (!inSameDG) {
return localStrings.getString("migrate.timers.destinationIsNotInDG", target);
}
//verify destinationServer is running
if (!isServerRunning(target)) {
return localStrings.getString("migrate.timers.destinationServerIsNotAlive", target);
}
}
return null;
}
}
