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package org.jvnet.glassfish.comms.admin.clbadmin.reader.impl;
import com.sun.enterprise.config.ConfigContext;
import com.sun.enterprise.config.ConfigException;
import com.sun.enterprise.config.serverbeans.ApplicationRef;
import com.sun.enterprise.config.serverbeans.Cluster;
import com.sun.enterprise.config.serverbeans.ClusterHelper;
import com.sun.enterprise.config.serverbeans.ConvergedLbClusterRef;
import com.sun.enterprise.config.serverbeans.ServerRef;
import com.sun.enterprise.util.i18n.StringManager;
import org.jvnet.glassfish.comms.admin.clbadmin.reader.api.ClusterReader;
import org.jvnet.glassfish.comms.admin.clbadmin.reader.api.InstanceReader;
import org.jvnet.glassfish.comms.admin.clbadmin.reader.api.LbReaderException;
import org.jvnet.glassfish.comms.admin.clbadmin.reader.api.WebModuleReader;
import org.jvnet.glassfish.comms.admin.clbadmin.transform.ClusterVisitor;
import org.jvnet.glassfish.comms.admin.clbadmin.transform.Visitor;
/**
* Impl class for ClusterReader. This provides loadbalancer
* data for a cluster.
*
* @author Vijaya Gadhamsetty
*/
public class ClusterReaderImpl implements ClusterReader {
private static final StringManager _strMgr = StringManager.getManager(ClusterReaderImpl.class);
// ---- VARIABLE(S) - PRIVATE --------------------------
private ConfigContext _configCtx = null;
private ConvergedLbClusterRef _clusterRef = null;
public ClusterReaderImpl(ConfigContext ctx, ConvergedLbClusterRef 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 String getSelfLoadbalance() {
return Boolean.toString(_clusterRef.isSelfLoadbalance());
}
public InstanceReader[] getInstances() throws LbReaderException {
ServerRef[] sRefs = null;
try {
Cluster c = ClusterHelper.getClusterByName(_configCtx,
_clusterRef.getRef());
sRefs = c.getServerRef();
} catch (ConfigException ce) {
String msg = _strMgr.getString("ErrorFindingClusteredServers",
_clusterRef.getRef());
throw new IllegalArgumentException(msg);
}
InstanceReader[] readers = null;
if (sRefs != null) {
readers = new InstanceReader[sRefs.length];
for (int i = 0; i < sRefs.length; i++) {
readers[i] = new InstanceReaderImpl(_configCtx, sRefs[i]);
}
}
return readers;
}
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 void accept(Visitor v) {
ClusterVisitor cv = (ClusterVisitor) v;
cv.visit(this);
}
}