package org.apache.stratum.jcs.auxiliary.lateral.http.server;
import java.io.InputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.stratum.jcs.engine.behavior.ICache;
import org.apache.stratum.jcs.engine.behavior.ICacheElement;
import org.apache.stratum.jcs.engine.control.Cache;
import org.apache.stratum.jcs.engine.control.CacheManagerFactory;
import org.apache.stratum.jcs.engine.control.CompositeCacheManager;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* @author Aaron Smuts
* @created January 15, 2002
* @version 1.0
*/
public class LateralCacheServletReciever extends HttpServlet
{
private final static Log log =
LogFactory.getLog( LateralCacheServletReciever.class );
private static CompositeCacheManager cacheMgr;
/** Description of the Method */
public void init( ServletConfig config )
throws ServletException
{
cacheMgr = CacheManagerFactory.getInstance();
super.init( config );
}
/** SERVICE THE REQUEST */
public void service( HttpServletRequest request,
HttpServletResponse response )
throws ServletException, IOException
{
log.debug( "The LateralCacheServlet has been called.\n" );
if ( cacheMgr == null )
{
cacheMgr = CacheManagerFactory.getInstance();
log.debug( "cacheMgr was null in LateralCacheServlet" );
}
ICacheElement item = null;
try
{
// Create the ObjectInputStream with
// the Request InputStream.
ObjectInputStream ois =
new ObjectInputStream( request.getInputStream() );
log.debug( "after getting input stream and before reading it" );
// READ POLLOBJ
item = ( ICacheElement ) ois.readObject();
ois.close();
}
catch ( Exception e )
{
log.error( e );
}
if ( item == null )
{
log.debug( "item is null in LateralCacheServlet" );
}
else
{
String hashtableName = item.getCacheName();
Serializable key = item.getKey();
Serializable val = item.getVal();
log.debug( "item read in = " + item );
log.debug( "item.getKey = " + item.getKey() );
Cache cache = ( Cache ) cacheMgr.getCache( hashtableName );
try
{
// need to set as from lateral
cache.add( item );
}
catch ( Exception e )
{
// Ignored -- log it?
}
}
try
{
// BEGIN RESPONSE
response.setContentType( "application/octet-stream" );
ObjectOutputStream oos =
new ObjectOutputStream( response.getOutputStream() );
log.debug( "Opened output stream.\n" );
String result = "Completed transfer";
// ECHO THE OBJECT TO THE RESPONSE
oos.writeObject( result );
log.debug( "Wrote object to output stream" );
oos.flush();
log.debug( "Flushed output stream.\n" );
oos.close();
log.debug( "Closed output stream.\n" );
}
catch ( Exception e )
{
log.error( e );
}
}
/** */
public void destroy()
{
cacheMgr.release();
}
/** Get servlet information */
public String getServletInfo()
{
return "LateralCacheServlet v1";
}
}