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package com.sun.enterprise.ee.admin.lbadmin.reader.impl;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.List;
import java.util.ArrayList;
import com.sun.enterprise.config.ConfigBean;
import com.sun.enterprise.config.ConfigContext;
import com.sun.enterprise.config.serverbeans.Server;
import com.sun.enterprise.config.serverbeans.J2eeApplication;
import com.sun.enterprise.config.serverbeans.ApplicationRef;
import com.sun.enterprise.config.serverbeans.ClusterRef;
import com.sun.enterprise.config.serverbeans.HealthChecker;
import com.sun.enterprise.config.serverbeans.ClusterHelper;
import com.sun.enterprise.config.serverbeans.WebModule;
import com.sun.enterprise.config.serverbeans.ServerHelper;
import com.sun.enterprise.config.serverbeans.ApplicationHelper;
import com.sun.enterprise.admin.util.IAdminConstants;
import com.sun.enterprise.ee.admin.lbadmin.transform.Visitor;
import com.sun.enterprise.ee.admin.lbadmin.transform.ClusterVisitor;
import com.sun.enterprise.ee.admin.lbadmin.reader.api.ClusterReader;
import com.sun.enterprise.ee.admin.lbadmin.reader.api.InstanceReader;
import com.sun.enterprise.ee.admin.lbadmin.reader.api.WebModuleReader;
import com.sun.enterprise.ee.admin.lbadmin.reader.api.HealthCheckerReader;
import com.sun.enterprise.ee.admin.lbadmin.reader.api.LocationHelper;
import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.logging.ee.EELogDomains;
import com.sun.enterprise.util.i18n.StringManager;
import com.sun.enterprise.config.ConfigException;
import com.sun.enterprise.ee.admin.lbadmin.reader.api.LbReaderException;
import com.sun.enterprise.tools.common.dd.webapp.SunWebApp;
/**
* Impl class for ClusterReader. This provides loadbalancer
* data for a cluster.
*
* @author Nazrul Islam
* @since JDK1.4
*/
public class ClusterReaderImpl implements ClusterReader {
public ClusterReaderImpl(ConfigContext ctx, ClusterRef ref)
throws LbReaderException {
if ( (ctx == null) || (ref == null) ) {
String iMsg = _strMgr.getString("InvalidArgs");
throw new RuntimeException(iMsg);
}
_configCtx = ctx;
_clusterRef = ref;
try {
if (!ClusterHelper.isACluster(ctx, ref.getRef())) {
String msg = _strMgr.getString("ClusterNotFound", ref.getRef());
throw new LbReaderException(msg);
}
} catch (ConfigException ce) {
String msg = _strMgr.getString("ClusterNotFound", ref.getRef());
throw new LbReaderException(msg, ce);
}
}
public String getName() {
return _clusterRef.getRef();
}
public InstanceReader[] getInstances() throws LbReaderException {
Server[] servers = null;
try {
servers = ServerHelper.getServersInCluster(
_configCtx, _clusterRef.getRef());
} catch (ConfigException ce) {
String msg = _strMgr.getString("ErrorFindingClusteredServers",
_clusterRef.getRef());
throw new LbReaderException(msg, ce);
}
InstanceReader[] readers = null;
if (servers != null) {
readers = new InstanceReader[servers.length];
for (int i=0; i<servers.length; i++) {
readers[i] = new InstanceReaderImpl(_configCtx,_clusterRef,
servers[i]);
}
}
return readers;
}
public HealthCheckerReader getHealthChecker() throws LbReaderException {
HealthChecker bean = _clusterRef.getHealthChecker();
if (bean == null) {
return null;
} else {
HealthCheckerReader reader = new HealthCheckerReaderImpl(bean);
return reader;
}
}
public WebModuleReader[] getWebModules() throws LbReaderException {
ApplicationRef[] refs = null;
try {
refs = ClusterHelper.getApplicationReferences(
_configCtx, _clusterRef.getRef());
} catch (ConfigException ce) {
String msg = _strMgr.getString("ErrorFindingClusteredApplications",
_clusterRef.getRef());
throw new LbReaderException(msg, ce);
}
return ClusterReaderHelper.getWebModules(_configCtx, refs,
_clusterRef.getRef() );
}
public String getLbPolicy() {
return _clusterRef.getLbPolicy();
}
public String getLbPolicyModule() {
return _clusterRef.getLbPolicyModule();
}
public void accept(Visitor v) {
ClusterVisitor cv = (ClusterVisitor)v;
cv.visit(this);
}
// ---- VARIABLE(S) - PRIVATE --------------------------
private ConfigContext _configCtx = null;
private ClusterRef _clusterRef = null;
private static final StringManager _strMgr =
StringManager.getManager(ClusterReaderImpl.class);
}