/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2009 Sun Microsystems, Inc. All rights reserved.
* Copyright (c) Ericsson AB, 2004-2008. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package org.jvnet.glassfish.comms.clb.admin;
import java.io.IOException;
import com.sun.enterprise.config.ConfigContext;
import com.sun.enterprise.server.ApplicationServer;
import com.sun.enterprise.util.SystemPropertyConstants;
import com.sun.enterprise.admin.server.core.AdminService;
import com.sun.enterprise.admin.event.AdminEventListenerException;
import com.sun.enterprise.config.serverbeans.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.List;
import com.sun.enterprise.config.ConfigException;
import com.sun.enterprise.config.ConfigChange;
import com.sun.enterprise.config.ConfigUpdate;
import com.sun.enterprise.ee.synchronization.SynchronizationException;
import com.sun.enterprise.ee.synchronization.impl.SynchronizationClientImpl;
import java.io.File;
import java.security.AccessController;
import java.security.PrivilegedAction;
import org.jvnet.glassfish.comms.admin.event.extensions.clb.*;
import org.jvnet.glassfish.comms.clb.core.sip.SipLoadBalancerManagerBackEnd;
import org.jvnet.glassfish.comms.util.LogUtil;
public class ConvergedLBPolicyEventListenerImpl implements ConvergedLbPolicyEventListener {
static final String CONFIG = "config";
static final String CLB_DCR_FILE="dcr-file";
/**
* Creates a new instance of ConvergedLBEventListenerImpl
*/
public ConvergedLBPolicyEventListenerImpl() {
}
public void handleCreate(ConvergedLbPolicyEvent e) throws AdminEventListenerException
{
try{
synchronizeDCRXml(e);
}catch(SynchronizationException ex)
{
_logger.log(Level.SEVERE, "clb.admin.fileSyncFailed", ex.getMessage());
throw new AdminEventListenerException(ex);
}
}
public void handleDelete(ConvergedLbPolicyEvent e) throws AdminEventListenerException
{
try{
synchronizeDCRXml(e);
}catch(SynchronizationException ex)
{
_logger.log(Level.SEVERE, "clb.admin.fileSyncFailed", ex.getMessage());
throw new AdminEventListenerException(ex);
}
}
public void handleUpdate(ConvergedLbPolicyEvent e) throws AdminEventListenerException
{
try{
synchronizeDCRXml(e);
}catch(SynchronizationException ex)
{
_logger.log(Level.SEVERE, "clb.admin.fileSyncFailed", ex.getMessage());
throw new AdminEventListenerException(ex);
}
}
protected void synchronizeDCRXml(ConvergedLbPolicyEvent e) throws SynchronizationException {
// connects to DAS
String dasName = SystemPropertyConstants.DEFAULT_SERVER_INSTANCE_NAME;
// current server name
String serverName=ApplicationServer.getServerContext().
getInstanceName();
String[] dcrXMLFile = getDCRFileName(e, serverName);
if(dcrXMLFile == null) return; //no-op
String dcrXMLNewFile= dcrXMLFile[0];
String dcrXMLOldFile= dcrXMLFile[1];
SynchronizationClientImpl sc = new SynchronizationClientImpl(dasName);
_logger.log(Level.INFO,
"clb.admin.startSync",
new Object[]{dcrXMLNewFile, dasName});
try {
sc.connect();
_logger.log(Level.FINEST,
"clb.admin.ConnectedToDAS" );
} catch (IOException ie) {
throw new SynchronizationException("Connection to SynchronizationClientImpl failed. IOException occured while trying to connect " + ie.getMessage());
}
String instanceRoot = System.getProperty(SystemPropertyConstants.INSTANCE_ROOT_PROPERTY);
String configName = getConfigName(e, serverName);
String clbTargetLocation = instanceRoot + File.separator + CONFIG + File.separator + configName;
//Added as a workaround for scenario when config-dir does not exist
//under instance config
final File clbTargetDir = new File(clbTargetLocation);
if (!clbTargetDir.exists()) {
try {
AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
clbTargetDir.mkdir();
return null;
}
});
} catch (SecurityException ex) {
throw new SynchronizationException(
"Unable to create directory " + clbTargetLocation, ex);
}
}
_logger.log(Level.FINEST,
"clb.admin.FechingFile", new String[]{dcrXMLNewFile, clbTargetLocation} );
sc.get(CONFIG + File.separator + configName + File.separator + dcrXMLNewFile, clbTargetLocation + File.separator + dcrXMLNewFile);
_logger.log(Level.FINE,
"clb.admin.SyncSucessful", clbTargetLocation);
//Reconfiguring sip load-balancer back-end dcr xml
if (SipLoadBalancerManagerBackEnd.isLayerActive()) {
SipLoadBalancerManagerBackEnd.getInstance().dcrReconfig(configName + File.separator + dcrXMLNewFile);
}
if (dcrXMLOldFile != null){
try {
_logger.log(Level.FINE,
"clb.admin.DeleteDCR", dcrXMLOldFile);
File oldDCRFile= new File(clbTargetLocation + File.separator + dcrXMLOldFile);
boolean value = oldDCRFile.delete();
if (value == false)
_logger.log(Level.WARNING, "clb.admin.UnableToDelete", dcrXMLOldFile);
}catch(SecurityException se){
_logger.log(Level.WARNING, "clb.admin.UnableToDeleteWErr", new String[]{dcrXMLOldFile, se.getMessage()});
}
}
try {
sc.disconnect();
} catch (IOException ie) {
_logger.log(Level.FINE, "Unable to close connection to DAS "
+ ie.getMessage());
}
}
/**
* method to get the config name from the event's config context
* @param e - the event
* @param serverName
* @return - the name of the Config from the config context. Else returns null
*/
private String getConfigName(ConvergedLbPolicyEvent e, String serverName)
throws SynchronizationException {
ConfigContext _ctx = e.getConfigContext();
try {
if (_ctx == null ) {
throw new RuntimeException("ConfigContext is null");
}
Config config = ServerHelper.getConfigForServer(_ctx,serverName);
if (config == null ) {
throw new RuntimeException("ServerHelper.getConfigForServer is null");
}
return config.getName();
} catch (ConfigException ce) {
throw new SynchronizationException("Unable to resolve configuration name");
}
}
/**
* method to check if the dcr file is one of the attributes that has changed.
* @param e - the event
* @param serverName
* @return - the names of the dcr files from the change list.
* [0]= New DCR file name
* [1]= old DCR file name
* Else returns null
*/
private String[] getDCRFileName(ConvergedLbPolicyEvent e, String serverName ){
List changeList = e.getConfigChangeList();
String[] changeValues = null;
for (int i =0; i < changeList.size(); i++)
{
ConfigChange change = (ConfigChange) changeList.get(i);
if (change!= null && change instanceof ConfigUpdate)
{
changeValues = new String[2];
changeValues[0]= ((ConfigUpdate)change).getNewValue(CLB_DCR_FILE);
changeValues[1]= ((ConfigUpdate)change).getOldValue(CLB_DCR_FILE);
_logger.log(Level.FINER, "clb.admin.DCRFName", changeValues[0]);
return changeValues;
}
}
return null;
}
private static final Logger _logger = LogUtil.CLB_LOGGER.getLogger();
}