/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. 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 com.sun.appserv.naming;
import javax.naming.spi.InitialContextFactory;
import javax.naming.*;
import java.util.Hashtable;
import java.util.Properties;
import org.omg.CORBA.ORB;
import com.sun.corba.ee.impl.orbutil.ORBConstants;
import com.sun.corba.ee.spi.folb.GroupInfoService;
import com.sun.jndi.cosnaming.CNCtxFactory;
import com.sun.enterprise.naming.SerialContext;
import com.sun.enterprise.util.ORBManager;
import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.logging.LogDomains;
/**
* Implements the JNDI SPI InitialContextFactory interface used to
* create the InitialContext objects.
*
* The static block creates the list of endpoints from the system property
* com.sun.appserv.iiop.endpoints.
* The list is randomised the very first time S1ASCtxFactory is initialized.
* When a call for a new InitialContext comes, the pointer in the list is moved
* one element ahead. Thus for loadbalancing purposes, there is always a different
* list created.
* failover is taken care of by the ORB infrastructure.
*
* @author Dhiru Pandey & Vijay Raghavan
* @author Sheetal Vartak
*/
public class S1ASCtxFactory extends CNCtxFactory {
protected static final Logger _logger = LogDomains.getLogger(
LogDomains.JNDI_LOGGER);
private static final RoundRobinPolicy rrPolicy;
private static final String IIOP_URL = "iiop:1.2@";
private static final String CORBALOC = "corbaloc:";
public static final String LOAD_BALANCING_PROPERTY =
"com.sun.appserv.iiop.loadbalancingpolicy";
public static final String IIOP_ENDPOINTS_PROPERTY =
"com.sun.appserv.iiop.endpoints";
private final Hashtable defaultEnv;
private static GroupInfoService gis;
public static final String IC_BASED_WEIGHTED = "ic-based-weighted";
public static final String IC_BASED = "ic-based";
private static boolean firstTime = true;
private static GroupInfoServiceObserverImpl giso;
static {
String [] list = null;
String [] commaDelimitedValues = null;
String policy = null;
// Get the load balancing policy
String propertyValue = System.getProperty(
LOAD_BALANCING_PROPERTY);
if (propertyValue != null) {
commaDelimitedValues = propertyValue.split(",");
if (commaDelimitedValues != null) {
if (commaDelimitedValues[0].trim().equals(IC_BASED) ||
commaDelimitedValues[0].trim().equals(IC_BASED_WEIGHTED)) {
policy = commaDelimitedValues[0];
}
}
if(policy != null) {
System.setProperty(LOAD_BALANCING_PROPERTY, policy);
}
}
propertyValue = System.getProperty(
IIOP_ENDPOINTS_PROPERTY);
if(propertyValue==null||propertyValue.length()==0){
//do not use the defaults here as then we are not giving a
//chance to the <policy>,host:port(,host:port)* type of policy
//specification
list = null;
} else {
list = propertyValue.split(",");
}
//if the endpoints property was not specified, give a
//chance to the <policy>,host:port(,host:port)* type of policy
//specification
String host;
String port;
if(list == null ) {
if (commaDelimitedValues != null &&
commaDelimitedValues.length > 1) {
list = new String[commaDelimitedValues.length-1];
for (int i=0; i<list.length; i++) {
list[i] = commaDelimitedValues[i+1];
}
} else if((host = System.getProperty(ORBManager.OMG_ORB_INIT_HOST_PROPERTY)) != null &&
(port = System.getProperty(ORBManager.OMG_ORB_INIT_PORT_PROPERTY)) != null) {
list = new String[1];
list[0] = host + ":" + port;
}
}
rrPolicy = new RoundRobinPolicy(list);
if (list != null && list.length > 0) {
getGIS();
}
}
public S1ASCtxFactory() {
defaultEnv = new Hashtable();
}
public S1ASCtxFactory(Hashtable env) {
defaultEnv = env;
}
public static RoundRobinPolicy getRRPolicy() {
return rrPolicy;
}
public synchronized Context getInitialContext(Hashtable env) throws NamingException {
Object [] list;
if (SerialContext.getSticky() != null) {
Context ctx = SerialContext.getStickyContext();
return ctx;
}
// firstTime is a boolean introduced to check if this is the first call to
// new InitialContext(). This is important especially on the server side
if (firstTime == true) {
String policy = null;
if (env == null) {
env = defaultEnv;
}
//user can specify the load balancing policy and endpoints
// via env. Hence the logic below.
String propertyValue = (String) env.get(LOAD_BALANCING_PROPERTY);
String[] commaDelimitedValues = null;
String host = null;
String port = null;
if (propertyValue != null) {
commaDelimitedValues = propertyValue.split(",");
if (commaDelimitedValues != null) {
if (commaDelimitedValues[0].trim().equals(IC_BASED) ||
commaDelimitedValues[0].trim().equals(IC_BASED_WEIGHTED)) {
policy = commaDelimitedValues[0];
}
}
if (policy != null) {
System.setProperty(LOAD_BALANCING_PROPERTY, policy);
}
}
propertyValue = (String) env.get(IIOP_ENDPOINTS_PROPERTY);
String [] temp_list = (propertyValue == null ||
propertyValue.length() == 0)
? null
: propertyValue.split(",");
if(temp_list == null || temp_list.length == 0) {
if (commaDelimitedValues != null) {
temp_list = new String[commaDelimitedValues.length - 1];
for (int i=0; i<temp_list.length; i++) {
temp_list[i] = commaDelimitedValues[i+1];
}
}
}
//if endpoints property is not set by commandline or via env
// check for JNDI provider url
// else use ORB host:port value
if ((System.getProperty(IIOP_ENDPOINTS_PROPERTY) == null) &&
(temp_list == null ||
temp_list.length == 0)) {
if (env.get(ORBManager.JNDI_PROVIDER_URL_PROPERTY) != null) {
temp_list = rrPolicy.getEndpointForProviderURL(
(String)env.get(ORBManager.JNDI_PROVIDER_URL_PROPERTY));
}
if (temp_list == null || temp_list.length == 0) {
if (env.get(ORBManager.OMG_ORB_INIT_HOST_PROPERTY) != null &&
env.get(ORBManager.OMG_ORB_INIT_PORT_PROPERTY) != null) {
host = (String)env.get(
ORBManager.OMG_ORB_INIT_HOST_PROPERTY);
port = (String)env.get(
ORBManager.OMG_ORB_INIT_PORT_PROPERTY);
} else {
host = System.getProperty(
ORBManager.OMG_ORB_INIT_HOST_PROPERTY);
port = System.getProperty(
ORBManager.OMG_ORB_INIT_PORT_PROPERTY);
}
if (host != null &&
port != null) {
temp_list = rrPolicy.getAddressPortList(host, port);
_logger.log(Level.WARNING, "no.endpoints.selected",
new Object[] {host, port});
} else {
_logger.log(Level.SEVERE, "no.endpoints");
throw new RuntimeException("Cannot Proceed. No Endpoints specified.");
}
}
}
if (giso == null) {
if (temp_list != null && temp_list.length > 0) {
getGIS();
} else {
_logger.warning("Cannot obtain GroupInfoServiceObserverImpl");
}
}
//add the list after randomising it to the circular list in rrPolicy
if (temp_list != null && temp_list.length > 0) {
rrPolicy.setClusterInstanceInfo(temp_list);
}
firstTime = false;
if (giso != null) {
//need to get the list of cluster instances the very first time a context is created
giso.membershipChange();
} else {
_logger.warning("Cannot obtain GroupInfoServiceObserverImpl");
}
}
//get next version of the randomized list using round robin algo
list = rrPolicy.getNextRotation();
if (_logger.isLoggable(Level.FINE)) {
rrPolicy.print();
}
String corbalocURL = getCorbalocURL(list);
env.put("com.sun.appserv.ee.iiop.endpointslist",
CORBALOC + corbalocURL);
env.put(ORBManager.JNDI_CORBA_ORB_PROPERTY, ORBManager.getORB());
return new SerialContext(env);
}
public static String getCorbalocURL(Object[] list) {
String corbalocURL = "";
//convert list into corbaloc url
for (int i = 0; i < list.length;i++) {
_logger.info("list[i] ==> " + list[i]);
if (corbalocURL.equals("")) {
corbalocURL = IIOP_URL + ((String)list[i]).trim();
} else {
corbalocURL = corbalocURL + "," +
IIOP_URL + ((String)list[i]).trim();
}
}
_logger.info("corbaloc url ==> " + corbalocURL);
return corbalocURL;
}
private static void getGIS() {
try {
//fix for bug 6527987
// passing the first endpoint for ORBManager.getORB() to connect to
//need to make NameService HA...what if first endpoint is down.
//need to address this issue.
/* Properties props = new Properties();
String hostPort = endpoint;
// for IPv6 support, using lastIndex of ":"
int lastIndex = hostPort.lastIndexOf(':');
_logger.fine("hostPort = " + hostPort + " lastIndex = " + lastIndex);
_logger.fine("hostPort.substring(0, lastIndex) = " + hostPort.substring(0, lastIndex));
_logger.fine("hostPort.substring(lastIndex + 1) = " + hostPort.substring(lastIndex + 1));
props.put("org.omg.CORBA.ORBInitialHost", hostPort.substring(0, lastIndex));
props.put("org.omg.CORBA.ORBInitialPort", hostPort.substring(lastIndex + 1));
*/
gis = (GroupInfoService)
((ORBManager.getORB()).resolve_initial_references(
ORBConstants.FOLB_CLIENT_GROUP_INFO_SERVICE));
giso = new GroupInfoServiceObserverImpl(gis);
gis.addObserver(giso);
rrPolicy.print();
} catch (org.omg.CORBA.ORBPackage.InvalidName in) {
_logger.fine("GroupInfoService not available. This is PE");
}
}
}
|
