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package org.glassfish.loadbalancer.admin.cli;
import com.sun.enterprise.config.serverbeans.Cluster;
import java.util.logging.Logger;
import java.util.List;
import java.beans.PropertyVetoException;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.component.*;
import org.jvnet.hk2.config.*;
import org.glassfish.api.Param;
import org.glassfish.api.ActionReport;
import com.sun.enterprise.util.LocalStringManagerImpl;
import org.glassfish.hk2.api.PerLookup;
import org.glassfish.internal.api.Target;
import com.sun.enterprise.config.serverbeans.Domain;
import com.sun.enterprise.config.serverbeans.ClusterRef;
import com.sun.enterprise.config.serverbeans.ServerRef;
import com.sun.enterprise.config.serverbeans.HealthChecker;
import com.sun.enterprise.config.serverbeans.Server;
import org.glassfish.loadbalancer.config.LbConfigs;
import org.glassfish.loadbalancer.config.LbConfig;
import org.glassfish.api.admin.*;
import org.glassfish.config.support.TargetType;
import org.glassfish.config.support.CommandTarget;
import javax.inject.Inject;
/**
* This is a remote command that deletes health-checker config for cluster or
* server.
* @author Yamini K B
*/
@Service(name = "delete-http-health-checker")
@PerLookup
@TargetType(value={CommandTarget.STANDALONE_INSTANCE, CommandTarget.CLUSTER})
@org.glassfish.api.admin.ExecuteOn(RuntimeType.DAS)
@RestEndpoints({
@RestEndpoint(configBean=Cluster.class,
opType=RestEndpoint.OpType.POST,
path="delete-http-health-checker",
description="delete-http-health-checker",
params={
@RestParam(name="target", value="$parent")
}),
@RestEndpoint(configBean=Server.class,
opType=RestEndpoint.OpType.POST,
path="delete-http-health-checker",
description="delete-http-health-checker",
params={
@RestParam(name="target", value="$parent")
})
})
public final class DeleteHTTPHealthCheckerCommand implements AdminCommand {
@Param(optional=true)
String config;
@Param(primary=true)
String target;
@Inject
Domain domain;
@Inject
Target tgt;
@Inject
Logger logger;
private ActionReport report;
final private static LocalStringManagerImpl localStrings =
new LocalStringManagerImpl(DeleteHTTPHealthCheckerCommand.class);
@Override
public void execute(AdminCommandContext context) {
report = context.getActionReport();
report.setActionExitCode(ActionReport.ExitCode.SUCCESS);
LbConfigs lbconfigs = domain.getExtensionByType(LbConfigs.class);
if (lbconfigs == null) {
String msg = localStrings.getLocalString("NoLbConfigsElement",
"Empty lb-configs");
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
if (config != null) {
LbConfig lbConfig = lbconfigs.getLbConfig(config);
deleteHealthCheckerInternal(lbConfig, target, false);
} else {
List<LbConfig> lbConfigs = lbconfigs.getLbConfig();
if (lbConfigs.isEmpty()) {
String msg = localStrings.getLocalString("NoLbConfigsElement",
"Empty lb-configs");
logger.warning(msg);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
for (LbConfig lc:lbConfigs) {
deleteHealthCheckerInternal(lc, target, true);
}
}
}
/**
* Deletes a health checker from a load balancer configuration.
*
* @param lbConfig Http load balancer configuration bean
* @param target Name of a cluster or stand alone server instance
* @param ignoreFailure if ignoreError is true, exceptions are not
* thrown in the following cases
* 1). The specified server instance or cluster
* does not exist in the LB config.
* 2).The target already contains the health checker
*
*/
private void deleteHealthCheckerInternal(LbConfig lbConfig, String target,
boolean ignoreFailure) {
// invalid lb config name
if (lbConfig == null) {
String msg = localStrings.getLocalString("InvalidLbConfigName", "Invalid LB configuration.");
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
String lbConfigName = lbConfig.getName();
logger.fine("[LB-ADMIN] deleteHealthChecker called - LB Config Name: "
+ lbConfigName + ", Target: " + target);
// null target
if (target == null) {
String msg = localStrings.getLocalString("Nulltarget", "Null target");
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
// target is a cluster
if (tgt.isCluster(target)) {
ClusterRef cRef = lbConfig.getRefByRef(ClusterRef.class, target);
// cluster is not associated to this lb config
if ((cRef == null) && (ignoreFailure == false)){
String msg = localStrings.getLocalString("UnassociatedCluster",
"Load balancer configuration [{0}] does not have a reference to the given cluster [{1}].",
lbConfigName, target);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
if (cRef != null) {
HealthChecker hc = cRef.getHealthChecker();
if (hc != null) {
removeHealthCheckerFromClusterRef(cRef);
String msg = localStrings.getLocalString("http_lb_admin.HealthCheckerDeleted",
"Health checker deleted for target {0}", target);
logger.info(msg);
} else {
if (ignoreFailure == false) {
String msg = localStrings.getLocalString("HealthCheckerDoesNotExist",
"Health checker does not exist for target {0} in LB {1}", target, lbConfigName);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
}
}
// target is a server
} else if (domain.isServer(target)) {
ServerRef sRef = lbConfig.getRefByRef(ServerRef.class, target);
// server is not associated to this lb config
if ((sRef == null) && (ignoreFailure == false)) {
String msg = localStrings.getLocalString("UnassociatedServer",
"Load balancer configuration [{0}] does not have a reference to the given server [{1}].",
lbConfigName, target);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
if (sRef != null) {
HealthChecker hc = sRef.getHealthChecker();
if (hc != null) {
removeHealthCheckerFromServerRef(sRef);
String msg = localStrings.getLocalString("http_lb_admin.HealthCheckerDeleted",
"Health checker deleted for target {0}", target);
logger.info(msg);
} else {
if (ignoreFailure == false) {
String msg = localStrings.getLocalString("HealthCheckerDoesNotExist",
"Health checker does not exist for target {0} in LB {1}", target, lbConfigName);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
}
}
} else {
String msg = localStrings.getLocalString("InvalidTarget", "Invalid target", target);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
}
private void removeHealthCheckerFromClusterRef(ClusterRef cRef) {
try {
ConfigSupport.apply(new SingleConfigCode<ClusterRef>() {
@Override
public Object run(ClusterRef param) throws PropertyVetoException, TransactionFailure {
param.setHealthChecker(null);
return Boolean.TRUE;
}
}, cRef);
} catch (TransactionFailure ex) {
String msg = localStrings.getLocalString("FailedToRemoveHC", "Failed to remove health-checker");
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
report.setFailureCause(ex);
return;
}
}
private void removeHealthCheckerFromServerRef(ServerRef sRef) {
try {
ConfigSupport.apply(new SingleConfigCode<ServerRef>() {
@Override
public Object run(ServerRef param) throws PropertyVetoException, TransactionFailure {
param.setHealthChecker(null);
return Boolean.TRUE;
}
}, sRef);
} catch (TransactionFailure ex) {
String msg = localStrings.getLocalString("FailedToRemoveHC", "Failed to remove health-checker");
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
report.setFailureCause(ex);
return;
}
}
}