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package org.glassfish.loadbalancer.admin.cli;
import java.util.logging.Level;
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.I18n;
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.ApplicationRef;
import com.sun.enterprise.config.serverbeans.ClusterRef;
import com.sun.enterprise.config.serverbeans.ServerRef;
import com.sun.enterprise.config.serverbeans.Server;
import com.sun.enterprise.config.serverbeans.Cluster;
import org.glassfish.loadbalancer.config.LbConfigs;
import org.glassfish.loadbalancer.config.LbConfig;
import org.glassfish.loadbalancer.config.LoadBalancer;
import org.glassfish.loadbalancer.config.LoadBalancers;
import com.sun.enterprise.config.serverbeans.Applications;
import org.glassfish.api.admin.*;
import org.glassfish.config.support.TargetType;
import org.glassfish.config.support.CommandTarget;
import jakarta.inject.Inject;
/**
*
* This is a remote command that supports the create-http-lb-ref CLI command.
* It creates a server-ref|cluster-ref, health-checker by using the given
* parameters.
* lbname: the name of the load-balancer element that exists
* config: the name of the lb-config element that exists
* target: cluster-ref or server-ref parameter of lb-config *
* healthcheckerurl: url attribute of health-checker
* healthcheckerinterval: interval-in-seconds parameter of health-checker
* healthcheckertimeout: timeout-in-seconds parameter of health-checker
* @author Yamini K B
*/
@Service(name = "create-http-lb-ref")
@PerLookup
@I18n("create.http.lb.ref")
@TargetType(value={CommandTarget.STANDALONE_INSTANCE, CommandTarget.CLUSTER})
@org.glassfish.api.admin.ExecuteOn(RuntimeType.DAS)
@RestEndpoints({
@RestEndpoint(configBean=LbConfig.class,
opType=RestEndpoint.OpType.POST,
path="create-http-lb-ref",
description="create-http-lb-ref",
params={
@RestParam(name="config", value="$parent")
})
})
public final class CreateHTTPLBRefCommand extends LBCommandsBase
implements AdminCommand {
@Param(optional=true)
String config;
@Param(optional=true)
String lbname;
@Param(optional=true)
String lbpolicy;
@Param(optional=true)
String lbpolicymodule;
@Param(optional=true, defaultValue="/")
String healthcheckerurl;
@Param(optional=true, defaultValue="30")
String healthcheckerinterval;
@Param(optional=true, defaultValue="10")
String healthcheckertimeout;
@Param(optional=true)
String lbenableallapplications;
@Param(optional=true)
String lbenableallinstances;
@Param(optional=true)
String lbweight;
@Param(primary=true)
String target;
@Inject
Target tgt;
@Inject
Logger logger;
@Inject
CommandRunner runner;
@Inject
Applications applications;
private ActionReport report;
final private static LocalStringManagerImpl localStrings =
new LocalStringManagerImpl(CreateHTTPLBRefCommand.class);
@Override
public void execute(AdminCommandContext context) {
report = context.getActionReport();
report.setActionExitCode(ActionReport.ExitCode.SUCCESS);
boolean isCluster = (target!=null) ? tgt.isCluster(target): false;
if (config!=null && lbname!=null) {
String msg = localStrings.getLocalString("EitherConfigOrLBName",
"Either LB name or LB config name, not both");
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
if (config==null && lbname==null) {
String msg = localStrings.getLocalString("SpecifyConfigOrLBName",
"Please specify either LB name or LB config name.");
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
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) {
if (lbconfigs.getLbConfig(config) == null) {
String msg = localStrings.getLocalString("LbConfigDoesNotExist",
"Specified LB config {0} does not exist", config);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
} else if (lbname != null) {
LoadBalancers lbs = domain.getExtensionByType(LoadBalancers.class);
if (lbs == null) {
String msg = localStrings.getLocalString("NoLoadBalancersElement",
"No Load balancers defined.");
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
LoadBalancer lb = lbs.getLoadBalancer(lbname);
if (lb == null) {
String msg = localStrings.getLocalString("LoadBalancerNotDefined",
"Load balancer [{0}] not found.", lbname);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
config = lb.getLbConfigName();
}
if((lbpolicy != null) || (lbpolicymodule != null)) {
if (!isCluster) {
String msg = localStrings.getLocalString("NotCluster",
"{0} not a cluster", target);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
}
Cluster c = null;
Server s = null;
if (isCluster) {
c = domain.getClusterNamed(target);
if (c == null ) {
String msg = localStrings.getLocalString("ClusterNotDefined",
"Cluster {0} cannot be used as target", target);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
} else {
s = domain.getServerNamed(target);
if (s == null ) {
String msg = localStrings.getLocalString("ServerNotDefined",
"Server {0} cannot be used as target", target);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
}
// create lb ref
createLBRef(lbconfigs, target, config);
if (report.getActionExitCode() != ActionReport.ExitCode.SUCCESS) {
return;
}
if(healthcheckerurl != null ){
try {
final CreateHTTPHealthCheckerCommand command =
(CreateHTTPHealthCheckerCommand) runner
.getCommand("create-http-health-checker", report, context.getLogger());
command.url = healthcheckerurl;
command.interval=healthcheckerinterval;
command.timeout=healthcheckertimeout;
command.config=config;
command.target=target;
command.execute(context);
checkCommandStatus(context);
} catch (CommandException e) {
String msg = e.getLocalizedMessage();
logger.warning(msg);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
}
if(Boolean.parseBoolean(lbenableallinstances)) {
try {
final EnableHTTPLBServerCommand command = (EnableHTTPLBServerCommand)runner
.getCommand("enable-http-lb-server", report, context.getLogger());
command.target = target;
command.execute(context);
checkCommandStatus(context);
} catch (CommandException e) {
String msg = e.getLocalizedMessage();
logger.warning(msg);
// report.setActionExitCode(ExitCode.FAILURE);
// report.setMessage(msg);
// return;
}
}
if(Boolean.parseBoolean(lbenableallapplications)) {
List appRefs = domain.getApplicationRefsInTarget(target);
if ((appRefs.size() > 0) && Boolean.parseBoolean(lbenableallapplications)) {
for(ApplicationRef ref:appRefs) {
//enable only user applications
if(isUserApp(ref.getRef())) {
enableApp(context, ref.getRef());
}
}
}
}
}
public void createLBRef(LbConfigs lbconfigs, String target, String configName) {
if (logger.isLoggable(Level.FINE)) {
logger.fine("[LB-ADMIN] createLBRef called for target " + target);
}
// target is a cluster
if (tgt.isCluster(target)) {
addClusterToLbConfig(lbconfigs, configName, target);
logger.info(localStrings.getLocalString("http_lb_admin.AddClusterToConfig",
"Added cluster {0} to load balancer {1}", target, configName));
// target is a server
} else if (domain.isServer(target)) {
addServerToLBConfig(lbconfigs, configName, target);
logger.info(localStrings.getLocalString("http_lb_admin.AddServerToConfig",
"Added server {0} to load balancer {1}", target, configName));
} else {
String msg = localStrings.getLocalString("InvalidTarget", "Invalid target", target);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
}
private void addServerToLBConfig(final LbConfigs lbconfigs, final String configName, final String serverName) {
LbConfig lbConfig = lbconfigs.getLbConfig(configName);
ServerRef sRef = lbConfig.getRefByRef(ServerRef.class, serverName);
if (sRef != null) {
String msg = localStrings.getLocalString("LBServerRefExists",
"LB config already contains a server-ref for target {0}", target);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
Server server = domain.getServerNamed(serverName);
boolean isStandAlone = server.getCluster() == null && server.isInstance();
if (!isStandAlone) {
String msg = localStrings.getLocalString("NotStandAloneInstance",
"[{0}] is not a stand alone instance. Only stand alone instance can be added to a load balancer.",
serverName);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
try {
ConfigSupport.apply(new SingleConfigCode() {
@Override
public Object run(LbConfig param) throws PropertyVetoException, TransactionFailure {
ServerRef ref = param.createChild(ServerRef.class);
ref.setRef(serverName);
param.getClusterRefOrServerRef().add(ref);
return Boolean.TRUE;
}
}, lbConfig);
} catch (TransactionFailure ex) {
String msg = localStrings.getLocalString("FailedToAddServerRef",
"Failed to add server-ref");
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
report.setFailureCause(ex);
}
}
private void addClusterToLbConfig(final LbConfigs lbconfigs, final String configName, final String clusterName) {
LbConfig lbConfig = lbconfigs.getLbConfig(configName);
ClusterRef cRef = lbConfig.getRefByRef(ClusterRef.class, clusterName);
if (cRef != null) {
String msg = localStrings.getLocalString("LBClusterRefExists",
"LB config already contains a cluster-ref for target {0}", target);
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
return;
}
try {
ConfigSupport.apply(new SingleConfigCode() {
@Override
public Object run(LbConfig param) throws PropertyVetoException, TransactionFailure {
ClusterRef ref = param.createChild(ClusterRef.class);
ref.setRef(clusterName);
if(lbpolicy != null) {
ref.setLbPolicy(lbpolicy);
}
if(lbpolicymodule != null) {
ref.setLbPolicyModule(lbpolicymodule);
}
param.getClusterRefOrServerRef().add(ref);
return Boolean.TRUE;
}
}, lbConfig);
} catch (TransactionFailure ex) {
String msg = localStrings.getLocalString("FailedToAddClusterRef",
"Failed to add cluster-ref");
report.setActionExitCode(ActionReport.ExitCode.FAILURE);
report.setMessage(msg);
report.setFailureCause(ex);
}
}
private void enableApp(AdminCommandContext context, String appName) {
try {
final EnableHTTPLBApplicationCommand command =
(EnableHTTPLBApplicationCommand) runner
.getCommand("enable-http-lb-application", report, context.getLogger());
command.target = target;
command.name=appName;
command.execute(context);
checkCommandStatus(context);
} catch (CommandException e) {
String msg = e.getLocalizedMessage();
logger.warning(msg);
// report.setActionExitCode(ExitCode.FAILURE);
// report.setMessage(msg);
// return;
}
}
private boolean isUserApp(String id) {
if(applications.getApplication(id).getObjectType().equals("user")) {
return true;
}
return false;
}
}
