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/*
* HAStoreBase.java
*
* Created on November 22, 2005, 12:34 PM
*
*/
package com.sun.enterprise.ee.web.sessmgmt;
import java.io.*;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.zip.GZIPOutputStream;
import com.sun.logging.LogDomains;
import org.apache.catalina.*;
import org.apache.catalina.session.*;
import org.apache.catalina.session.StoreBase;
//import org.apache.catalina.util.*;
import com.sun.enterprise.ee.web.initialization.ServerConfigReader;
import com.sun.enterprise.web.ServerConfigLookup;
/**
*
* @author Larry White
*/
public abstract class HAStoreBase extends StoreBase {
/** Creates a new instance of HAStoreBase */
public HAStoreBase() {
}
/**
* Controls the verbosity of the web container subsystem's debug messages.
*
* This value is non-zero only when the level is one of FINE, FINER
* or FINEST.
*
*/
protected int _debug = 0;
protected void debug(String message) {
log(message);
}
/**
* The current level of logging verbosity for this object.
*/
protected Level _logLevel = null;
/**
* Set _debug flag and _logLevel based on the log level.
*/
protected void setLogLevel() {
Level level = _logger.getLevel();
_logLevel = level;
// Determine the appropriate value our debug level
if (level.equals(Level.FINE))
_debug = 1;
else if (level.equals(Level.FINER))
_debug = 2;
else if (level.equals(Level.FINEST))
_debug = 5;
else
_debug = 0;
}
/**
* The application id
*/
protected String applicationId = null;
public String getApplicationId() {
if(applicationId != null)
return applicationId;
Container container = manager.getContainer();
StringBuffer sb = new StringBuffer(50);
sb.append(this.getClusterId());
ArrayList list = new ArrayList();
while (container != null) {
if(container.getName() != null) {
list.add(":" + container.getName());
}
container = container.getParent();
}
for(int i=(list.size() -1); i>-1; i--) {
String nextString = (String) list.get(i);
sb.append(nextString);
}
applicationId = sb.toString();
return applicationId;
}
/**
* Return the cluster id for this Store as defined in server.xml.
*/
protected String getClusterIdFromConfig() {
ServerConfigLookup lookup = new ServerConfigLookup();
return lookup.getClusterIdFromConfig();
}
/**
* The cluster id
*/
protected String clusterId = null;
/**
* Return the cluster id for this Store
*/
protected String getClusterId() {
if(clusterId == null)
clusterId = getClusterIdFromConfig();
return clusterId;
}
//possible generic methods begin
/**
* Create serialized byte[] for <code>obj</code>.
*
* @param obj - serialize obj
* @return byte[] containing serialized data stream for obj
*/
public byte[] getByteArray(Session session)
throws IOException {
return getByteArray(session, false);
}
/**
* Create an byte[] for the session that we can then pass to
* the HA Store.
*
* @param session
* The session we are serializing
*
*/
protected byte[] getByteArray(Session session, boolean compress)
throws IOException {
ByteArrayOutputStream bos = null;
ObjectOutputStream oos = null;
//FIXME removed after review
//((StandardSession) session).notifyHttpSessionActivationListenersSessionWillPassivate();
IOUtilsCaller utilsCaller = null;
byte[] obs;
try {
bos = new ByteArrayOutputStream();
//HERCULES FIXME - for now reverting back
//need to re-examine EJBUtils and related serialization classes
//Bug 4832603 : EJB Reference Failover
/* was this
oos = new ObjectOutputStream(new BufferedOutputStream(bos));
end was this */
//oos = EJBUtils.getOutputStream(new BufferedOutputStream(bos), true);
//end - Bug 4832603
if( (utilsCaller = getWebUtilsCaller()) != null) {
try {
if (compress) {
oos = utilsCaller.createObjectOutputStream(
new GZIPOutputStream(new BufferedOutputStream(bos)), true);
} else {
oos = utilsCaller.createObjectOutputStream(new BufferedOutputStream(bos), true);
}
} catch (Exception ex) {}
}
//use normal ObjectOutputStream if there is a failure during stream creation
if(oos == null) {
if (compress) {
oos = new ObjectOutputStream(new GZIPOutputStream(new BufferedOutputStream(bos)));
} else {
oos = new ObjectOutputStream(new BufferedOutputStream(bos));
}
}
writeSession(session, oos);
oos.close();
oos = null;
obs = bos.toByteArray();
//for monitoring
boolean isMonitoringEnabled = ServerConfigReader.isMonitoringEnabled();
if(isMonitoringEnabled) {
if(_logger.isLoggable(Level.FINEST)) {
_logger.finest("IN HAStoreBase>>getInputStream for monitoring");
}
ReplicationManagerBase mgr = (ReplicationManagerBase)this.getManager();
WebModuleStatistics stats = mgr.getWebModuleStatistics();
stats.processSessionSize(obs.length);
}
//end for monitoring
}
finally {
if ( oos != null ) {
oos.close();
}
}
return obs;
}
//SJSAS 6406580 START
/**
* Remove the Session with the specified session identifier from
* this Store, if present. If no such Session is present, this method
* takes no action.
*
* @param id Session identifier of the Session to be removed
*
* @exception IOException if an input/output error occurs
*/
public void remove(String id) throws IOException {
if (_debug > 0) {
debug("in remove");
}
if ( id == null ) {
if (_debug > 0) {
debug("In remove, got a null id");
}
return;
}
Manager mgr = this.getManager();
if(mgr instanceof ReplicationManagerBase) {
ReplicationManagerBase pMgr = (ReplicationManagerBase)mgr;
pMgr.doRemove(id);
} else {
this.removeSynchronized(id);
}
}
/**
* Remove the Session with the specified session identifier from
* this Store, if present. If no such Session is present, this method
* takes no action. (This is the non-synchronized version of remove
* called by a store element from the pool, not the singleton store
* which must use removeSynchronized
*
* @param id Session identifier of the Session to be removed
*
* @exception IOException if an input/output error occurs
*/
public void doRemove(String id) throws IOException {
//over-ridden in sub-classes
}
/**
* Remove the Session with the specified session identifier from
* this Store, if present. If no such Session is present, this method
* takes no action.
*
* @param id Session identifier of the Session to be removed
*
* @exception IOException if an input/output error occurs
*/
public synchronized void removeSynchronized(String id) throws IOException {
//over-ridden in sub-classes
}
/**
* return the size of the store cache
* will be over-ridden in subclasses
*/
public int getSize() throws IOException {
//FIXME
return 0;
}
/**
* get the utility class used to call into services from IOUtils
*/
protected IOUtilsCaller getWebUtilsCaller() {
if(webUtilsCaller == null) {
WebIOUtilsFactory factory = new WebIOUtilsFactory();
webUtilsCaller = factory.createWebIOUtil();
}
return webUtilsCaller;
}
//possible generic methods end
/**
* A utility class used to call into services from IOUtils
*/
private IOUtilsCaller webUtilsCaller = null;
/**
* The logger to use for logging ALL web container related messages.
*/
protected static final Logger _logger
= LogDomains.getLogger(LogDomains.WEB_LOGGER);
}