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package com.sun.enterprise.ee.admin.lbadmin.mbeans;
import java.util.ArrayList;
import com.sun.enterprise.config.ConfigContext;
import com.sun.enterprise.config.ConfigException;
import com.sun.enterprise.config.serverbeans.Domain;
import com.sun.enterprise.config.serverbeans.LbConfigs;
import com.sun.enterprise.config.serverbeans.LbConfig;
import com.sun.enterprise.config.serverbeans.Server;
import com.sun.enterprise.config.serverbeans.Cluster;
import com.sun.enterprise.config.serverbeans.ClusterRef;
import com.sun.enterprise.config.serverbeans.ServerRef;
/**
* Helper class for lb-configs and lb-config element. This class various
* utility functions for LB Admin. For example: Getting list of LBs pointing
* to a server instance, getting list of LBs pointing to a particular cluster,
* etc.
*
* @author Satish Viswanatham
*/
public class LbConfigHelper {
/**
* Returns the list of LBs which contain a server instance
*
*/
public static String[] getLBsForStandAloneServer(ConfigContext ctx,
String serverName) throws ConfigException{
ArrayList sList = new ArrayList();
LbConfigs lbs = ((Domain) ctx.getRootConfigBean()).getLbConfigs();
if (lbs== null) {
// return, no lb configs
return null;
}
LbConfig[] lbConfigs = lbs.getLbConfig();
for (int i =0; i < lbConfigs.length; i ++) {
ServerRef[] sRefs = lbConfigs[i].getServerRef();
for (int j =0; j < sRefs.length; j++) {
if (sRefs[j].getRef().equals(serverName) ) {
sList.add(lbConfigs[i].getName());
}
}
}
String[] strList = new String[sList.size()];
return ( String [] ) sList.toArray(strList);
}
/**
* Returns the list of LBs which contain the specified cluster
*
*/
public static String[] getLBsForCluster(ConfigContext ctx,
String clusterName) throws ConfigException{
ArrayList sList = new ArrayList();
LbConfigs lbs = ((Domain) ctx.getRootConfigBean()).getLbConfigs();
if (lbs== null) {
// return, no lb configs
return null;
}
LbConfig[] lbConfigs = lbs.getLbConfig();
for (int i =0; i < lbConfigs.length; i ++) {
ClusterRef[] cRefs = lbConfigs[i].getClusterRef();
for (int j =0; j < cRefs.length; j++) {
if (cRefs[j].getRef().equals(clusterName) ) {
sList.add(lbConfigs[i].getName());
}
}
}
String[] strList = new String[sList.size()];
return ( String [] ) sList.toArray(strList);
}
/**
* Returns the list of clusters in the specified LB
*
*/
public static String[] getClustersInLB(ConfigContext ctx,
String configName) throws ConfigException{
ArrayList sList = new ArrayList();
LbConfigs lbs = ((Domain) ctx.getRootConfigBean()).getLbConfigs();
if (lbs== null) {
// return, no lb configs
return null;
}
LbConfig lbConfig = lbs.getLbConfigByName(configName);
if (lbConfig == null) {
return null;
}
ClusterRef[] cRefs = lbConfig.getClusterRef();
for (int j =0; j < cRefs.length; j++) {
sList.add(cRefs[j].getRef());
}
String[] strList = new String[sList.size()];
return ( String [] ) sList.toArray(strList);
}
/**
* Returns the list of servers in the specified LB
*
*/
public static String[] getServersInLB(ConfigContext ctx,
String configName) throws ConfigException{
ArrayList sList = new ArrayList();
LbConfigs lbs = ((Domain) ctx.getRootConfigBean()).getLbConfigs();
if (lbs== null) {
// return, no lb configs
return null;
}
LbConfig lbConfig = lbs.getLbConfigByName(configName);
if (lbConfig == null) {
return null;
}
ServerRef[] sRefs = lbConfig.getServerRef();
for (int j =0; j < sRefs.length; j++) {
sList.add(sRefs[j].getRef());
}
String[] strList = new String[sList.size()];
return ( String [] ) sList.toArray(strList);
}
/**
* Disables load balancing for a server with a quiescing period specififed
* by the timeout .
*
* @param target target server whose load balancing has to be disabled
* @param timeout quiescing time
*/
public void disableServer(String target, int timeout) {
//TODO
}
/**
* Enables a server for load balancing.
*
* @param target target server whose load balancing has to be enabled
* @param timeout quiescing time
*/
public void enableServer(String target) {
//TODO
}
/**
* Disables load balancing for a particular application in a server instance
* with a quiescing period specififed by the timeout .
*
* @param target target server where the application has been deployed
* @param appName application name.
* @param timeout quiescing time
*/
public void disableApplication(String target, String appName, int timeout) {
//TODO
}
/**
* Enables load balancing for a particular application in a server instance
*
* @param target target server where the application has been deployed
* @param appName application name.
*/
public void enableApplication(String target, String appName) {
//TODO
}
}