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/*
* Copyright 2005-2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
package com.sun.mfwk.agent.appserv.relation;
import java.util.Map;
import java.util.Set;
import java.util.Iterator;
import java.util.Collection;
import java.util.logging.Logger;
import java.util.logging.Level;
import org.w3c.dom.NodeList;
import org.w3c.dom.Element;
import java.io.IOException;
import com.sun.mfwk.relations.Relation;
import com.sun.mfwk.relations.RelationServiceImpl;
import com.sun.mfwk.agent.appserv.logging.LogDomains;
import com.sun.mfwk.agent.appserv.modeler.ModelerContext;
import com.sun.mfwk.agent.appserv.modeler.ObjectNameHelper;
import com.sun.mfwk.CMM_MBean;
import com.sun.mfwk.relations.InvalidRelationIdException;
import com.sun.mfwk.agent.appserv.discovery.CMMMBeanDiscoveryServiceFactory;
import com.sun.mfwk.agent.appserv.discovery.CMMMBeanDiscoveryService;
import javax.management.ObjectName;
import javax.management.MalformedObjectNameException;
import com.sun.mfwk.agent.appserv.util.Utils;
/**
* Instrument relations.
*/
public class RelationModeler {
/**
* Creates a new instance of relation modeler
*/
public RelationModeler(ModelerContext ctx) {
_context = ctx;
}
public ModelerContext getContext() {
return _context;
}
/**
* Instruments relations from the descriptor.
*
* @param serverName server for which relations are to be instrumented
* @throws Exception if an error occurs
*/
public void load(String serverName) throws Exception {
CMMMBeanDiscoveryService cmmDiscoveryService =
CMMMBeanDiscoveryServiceFactory.getInstance().
getCMMMBeanDiscoveryService();
String domainName = _context.getDomainName();
Set cmmMBeans =
cmmDiscoveryService.discoverCMMMBeans(serverName, domainName);
cmmMBeans.addAll(cmmDiscoveryService.discoverClusterCMMMBeans());
cmmMBeans.addAll(cmmDiscoveryService.discoverInstalledProductCMMMBeans());
load(cmmMBeans);
// listRelations();
}
/**
* Instruments relations for the given set of mbeans
*
* @param cmmMBeans set of cmm mbeans for which relations are
* to be instrumented
* @throws Exception if an error occurs
*/
public void load(Set cmmMBeans) throws Exception {
Iterator iter = cmmMBeans.iterator();
for (; iter.hasNext(); ) {
load((ObjectName)iter.next());
}
}
public void load(ObjectName cmmObjectName) throws Exception {
RelationMappingServiceFactory fac =
RelationMappingServiceFactory.getInstance();
RelationMappingService relationService = fac.getRelationMappingService(
_context.getServerName(), _context.getDomainName());
Utils.log(Level.FINEST, "cmmObjectName = " + cmmObjectName);
load(cmmObjectName, relationService.getDestinationRelations(cmmObjectName.toString()), DESTINATION, relationService);
load(cmmObjectName, relationService.getSourceRelations(cmmObjectName.toString()), SOURCE, relationService);
}
private void load(ObjectName cmmObjectName, Collection relations, String type, RelationMappingService relationService) throws Exception {
RelationFactory rf = new RelationFactory(_context);
String cmmObjectNameStr = cmmObjectName.toString();
Iterator iter = relations.iterator();
for (; iter.hasNext(); ) {
Element r = (Element)iter.next();
try {
String handler = relationService.getHandler(r);
if ("".equals(handler))
handler = null;
if (handler != null) {
callHandler(r, cmmObjectName, relationService);
} else {
String source = null, dest = null;
if (DESTINATION.equals(type)) {
dest = cmmObjectNameStr;
String template = relationService.getSource(r);
try {
source = ObjectNameHelper.tokenizeON(cmmObjectName,
template, _context.getTokens());
Utils.log(Level.FINEST, "IN DEST Template = " + template );
Utils.log(Level.FINEST, "IN DEST dest = " + dest);
} catch (NoSuchFieldException e) {
continue;
}
} else if (SOURCE.equals(type)) {
source = cmmObjectNameStr;
String template = relationService.getDestination(r);
try {
dest = ObjectNameHelper.tokenizeON(cmmObjectName,
template, _context.getTokens());
Utils.log(Level.FINEST, "IN SOURCE Template = " + template );
} catch (NoSuchFieldException e) {
continue;
}
}
if (isProcessed(source, dest, relationService.getType(r)))
continue;
Utils.log(Level.FINE, "Creating relations for dest = " + dest + " source = " + source);
Relation relation =
rf.create(source, dest, relationService.getType(r),
relationService.getCreateAnyway(r));
// add the newly created relation
if (relation != null) {
RelationServiceImpl.getRelationService().
addRelation(relation);
}
}
} catch (Exception e) {
LogDomains.getLogger().log(Level.SEVERE,
"Error while instrumenting relation", e);
}
}
}
private boolean isProcessed(String source, String dest, String type) {
Relation[] relations = RelationServiceImpl.getRelationService().getRelations(source, type, true);
for (int i = 0; i < relations.length; i++) {
if (dest.equals(relations[i].getDestinationInstanceID()))
return true;
}
return false;
}
/* public void listRelations() {
RelationServiceImpl relationService =
RelationServiceImpl.getRelationService();
Relation[] activeRelations = relationService.listRelations();
LogDomains.getLogger().severe("Listing Relations - numRelations = " +
activeRelations.length);
for (int i = 0; i < activeRelations.length; i++) {
Relation relation = activeRelations[i];
String source = relation.getSourceInstanceID();
LogDomains.getLogger().severe(relation.getDestinationInstanceID() + "," +
relation.getSourceInstanceID());
}
}
*/
private void callHandler(Element elem, ObjectName ON,
RelationMappingService relationService) {
try {
Class handlerClass=Class.forName(relationService.getHandler(elem));
RelationMappingHandler handler =
(RelationMappingHandler)handlerClass.newInstance();
handler.relationHandler(elem, ON, relationService, this);
} catch (Exception ex) {
throw new RuntimeException("Error calling user defined handler",ex);
}
}
public void removeRelations(String CMM_MBean) {
RelationServiceImpl relationService =
RelationServiceImpl.getRelationService();
Relation[] activeRelations = relationService.listRelations();
for (int i = 0; i < activeRelations.length; i++) {
Relation relation = activeRelations[i];
try {
if (ObjectName.getInstance(relation.getDestinationInstanceID()).equals(
ObjectName.getInstance(CMM_MBean)) || ObjectName.getInstance(
relation.getSourceInstanceID()).equals(ObjectName.getInstance(
CMM_MBean))) {
try {
relationService.removeRelation(relation);
} catch (InvalidRelationIdException ex) {
LogDomains.getLogger().log(Level.SEVERE,
"Error removing relation", ex);
}
}
} catch (MalformedObjectNameException ex) {
LogDomains.getLogger().log(Level.SEVERE,
"Error forming ObjectName", ex);
}
}
}
// ---- PRIVATE - VARIABLES -------------------------------------
private ModelerContext _context;
private String DESTINATION = "dest";
private String SOURCE = "source";
}