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package org.glassfish.loadbalancer.admin.cli.helper;
import java.io.OutputStream;
import java.util.Date;
import com.sun.enterprise.config.serverbeans.LbConfig;
import com.sun.enterprise.config.serverbeans.Domain;
import com.sun.enterprise.config.serverbeans.LoadBalancer;
import org.glassfish.loadbalancer.admin.cli.reader.api.LoadbalancerReader;
import org.glassfish.loadbalancer.admin.cli.reader.impl.LoadbalancerReaderImpl;
import org.glassfish.loadbalancer.admin.cli.transform.LoadbalancerVisitor;
import org.glassfish.internal.data.ApplicationRegistry;
import org.glassfish.loadbalancer.admin.cli.LbLogUtil;
import org.glassfish.loadbalancer.admin.cli.beans.Loadbalancer;
/**
* Export support class
*
* @author Kshitiz Saxena
*/
public class LbConfigHelper {
/**
* exports the loadbalancer.xml from the config to the outputstream provided
* @param ctx ConfigContext
* @param lbConfigName name of lb-config
* @param out OutputStream into which the loadbalancer.xml is written
*/
public static LoadbalancerReader getLbReader(Domain domain, ApplicationRegistry appRegistry,
String lbConfigName) throws Exception {
// reads the load balancer related data
LbConfig lbConfig = domain.getLbConfigs().getLbConfig(lbConfigName);
if (lbConfig == null) {
throw new Exception(LbLogUtil.getStringManager().getString("UnableToGetLbConfig", lbConfigName));
}
return new LoadbalancerReaderImpl(domain, appRegistry, lbConfig);
}
public static LoadBalancer getLoadBalancer(Domain domain, String lbName) throws Exception {
LoadBalancer loadBalancer = domain.getLoadBalancers().getLoadBalancer(lbName);
if (loadBalancer == null) {
throw new Exception(LbLogUtil.getStringManager().getString("UnableToGetLoadbalancer", lbName));
}
return loadBalancer;
}
/**
* exports the loadbalancer.xml from the config to the outputstream provided
* @param ctx ConfigContext
* @param lbConfigName name of lb-config
* @param out OutputStream into which the loadbalancer.xml is written
*/
public static void exportXml(LoadbalancerReader lbRdr, OutputStream out)
throws Exception {
// tranform the data using visitor pattern
Loadbalancer _lb = new Loadbalancer();
LoadbalancerVisitor lbVstr = new LoadbalancerVisitor(_lb);
lbRdr.accept(lbVstr);
try {
String footer = LbLogUtil.getStringManager().getString("GeneratedFileFooter",
new Date().toString());
// write the header
_lb.graphManager().setDoctype(PUBLICID, SYSTEMID);
_lb.write(out);
out.write(footer.getBytes());
} finally {
if (out != null) {
out.close();
out = null;
}
}
}
private static final String PUBLICID =
"-//Sun Microsystems Inc.//DTD Sun Java System Application Server 9.1//EN";
private static final String SYSTEMID = "glassfish-loadbalancer_1_3.dtd";
}