package org.apache.stratum.jcs.auxiliary.lateral;
import org.apache.stratum.jcs.auxiliary.lateral.behavior.ILateralCacheObserver;
import org.apache.stratum.jcs.auxiliary.lateral.behavior.ILateralCacheService;
import org.apache.stratum.jcs.auxiliary.lateral.socket.tcp.LateralTCPService;
import org.apache.stratum.jcs.auxiliary.lateral.socket.udp.LateralUDPService;
import org.apache.stratum.jcs.auxiliary.lateral.javagroups.LateralJGService;
import org.apache.stratum.jcs.auxiliary.lateral.xmlrpc.LateralXMLRPCService;
import org.apache.stratum.jcs.engine.behavior.ICacheRestore;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Used to repair the lateral caches managed by the associated instance of
* LateralCacheManager.
*
* @author asmuts
* @created January 15, 2002
*/
public class LateralCacheRestore implements ICacheRestore
{
private final static Log log =
LogFactory.getLog( LateralCacheRestore.class );
private final LateralCacheManager lcm;
private boolean canFix = true;
private Object lateralObj;
/**
* Constructs with the given instance of LateralCacheManager.
*
* @param lcm
*/
public LateralCacheRestore( LateralCacheManager lcm )
{
this.lcm = lcm;
}
/**
* Returns true iff the connection to the lateral host for the corresponding
* cache manager can be successfully re-established.
*/
public boolean canFix()
{
if ( !canFix )
{
return canFix;
}
try
{
// restore based on type. Only the tcp scoket type really needs restoring.
if ( lcm.lca.getTransmissionType() == lcm.lca.UDP )
{
lateralObj = new LateralUDPService( lcm.lca );
}
else
if ( lcm.lca.getTransmissionType() == lcm.lca.JAVAGROUPS )
{
lateralObj = new LateralJGService( lcm.lca );
}
else
if ( lcm.lca.getTransmissionType() == lcm.lca.XMLRPC )
{
lateralObj = new LateralXMLRPCService( lcm.lca );
}
else
if ( lcm.lca.getTransmissionType() == lcm.lca.TCP )
{
lateralObj = new LateralTCPService( lcm.lca );
}
else
if ( lcm.lca.getTransmissionType() == lcm.lca.HTTP )
{
}
}
catch ( Exception ex )
{
log.error( "Can't fix " + ex.getMessage() );
canFix = false;
}
return canFix;
}
/**
* Fixes up all the caches managed by the associated cache manager.
*/
public void fix()
{
if ( !canFix )
{
return;
}
lcm.fixCaches( ( ILateralCacheService ) lateralObj, ( ILateralCacheObserver ) lateralObj );
String msg = "Lateral connection resumed.";
log.info( msg );
log.debug( msg );
}
}