/* ====================================================================
 * The Vovida Software License, Version 1.0 
 * 
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 
 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
 *    and "Vovida Open Communication Application Library (VOCAL)" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact vocal@vovida.org.
 *
 * 4. Products derived from this software may not be called "VOCAL", nor
 *    may "VOCAL" appear in their name, without prior written
 *    permission of Vovida Networks, Inc.
 * 
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
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 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
 * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL VOVIDA
 * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
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 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 * 
 * ====================================================================
 * 
 * This software consists of voluntary contributions made by Vovida
 * Networks, Inc. and many individuals on behalf of Vovida Networks,
 * Inc.  For more information on Vovida Networks, Inc., please see
 * <http://www.vovida.org/>.
 *
 */

static const char* const UavmContainer_cxx_Version =
    "$Id: UavmContainer.cxx,v 1.21 2002/11/09 02:02:30 derekm Exp $";


#include "UavmContainer.hxx"
#include "HeartbeatUtil.h"
#include "HeartbeatCommon.h"
#include "cpLog.h"
#include "ReadLockHelper.hxx"
#include "WriteLockHelper.hxx"

Sptr < UavmContainer > UavmContainer::theUavmContainer = 0;

/**
 * Return the one Uavm container or create it if it doesn't already exist. 
 * @return  The singleton Uavm container object
 */
UavmContainer&
UavmContainer::instance()
{
    if ( theUavmContainer == 0 )
    {
        theUavmContainer = new UavmContainer;
    }
    return *theUavmContainer;
}

/**
 * Constructor
 */
UavmContainer::UavmContainer()
        : BaseServerContainer()
{}


/**
 * Copy Constructor
 * @param  rhs  Object from which to copy
 */
UavmContainer::UavmContainer( const UavmContainer& rhs )
  : BaseServerContainer(rhs)
{
    if (this != &rhs)
        copyRhsToThis( rhs );
}


/**
 * Operator overload for "="
 * @param  rhs  Object from which to copy
 * @return  Reference to this object with new data
 */
UavmContainer&
UavmContainer::operator=( const UavmContainer& rhs )
{
    if ( this != &rhs )
    {
        BaseServerContainer::operator= (rhs);
    }
    return *this;
}


void UavmContainer::addServer( const Data& key, const ServerType serverType, const int maxMissedHB)
{
    /// only UAVM's can be added to the UavmContainer.
    if (serverType == SERVER_UAVM)
    {
        cpLog(LOG_DEBUG, "Adding uavm: %s to UavmContainer", key.logData());
        BaseServerContainer::addServer(key, serverType, maxMissedHB);
    }
    else
    {
        cpLog( LOG_DEBUG, "Server type is not UAVM");
    }
}

/**
 * Copy member data from given object into this one
 * @param  rhs  Object from which to copy
 */
void
UavmContainer::copyRhsToThis( const UavmContainer& rhs )
{
    operator=(rhs);
}

/**
 * Destructor
 */
UavmContainer::~UavmContainer( )
{}


void
UavmContainer::getListofActive( const ServerType type, Sptr < std::vector < Data > > & listofActiveServers )
{
    cpLog( LOG_DEBUG_HB, "UavmContainer::getListofActive UAVMs");

    ReadLockHelper tableHelper(tableLock);

    displayLists();
    for (TableIter i = serverList.begin(); i != serverList.end(); ++i)
    {
        if (i->second->getStatus() != Inactive)
	{
            listofActiveServers->push_back(i->first);
	}
    }
}



bool
UavmContainer::processHeartbeat( const Data& key)
{
    Sptr < Server > serverPtr;

    if (search( key, serverPtr) )
    {
        ReadLockHelper tableHelper(tableLock);

        ///process heartbeat and display UAVM info
        serverPtr->processHeartbeat(key);

        displayServer(*serverPtr);
        return true;
    }
    else
    {
        return false;
    }
}



void
UavmContainer::doHouseKeeping()
{
    Sptr < Server > serverPtr;

    cpLog( LOG_DEBUG_HB, "****** do HouseKeeping *****");

    ReadLockHelper tableHelper(tableLock);

    if ( !serverList.empty() )
    {
        for ( TableIter i = serverList.begin(); i != serverList.end(); ++i)
        {
            serverPtr = i->second;
            if ( serverPtr->getStatus() != Inactive )
            {
                cpLog( LOG_DEBUG_HB, "%s", i->first.logData() );
                serverPtr->doHouseKeeping(i->first);
            }
        }
    }
    else
    {
        cpLog( LOG_DEBUG_HB, "nothing in server container");
    }

    cpLog( LOG_DEBUG_HB, "****** finished HouseKeeping *****");
}

/**
 * Display all of the servers in the container
 */
void UavmContainer::displayLists()
{
    ReadLockHelper tableHelper(tableLock);

    cpLog( LOG_DEBUG, "----------- UAVMs --------");
    for (TableIter i = serverList.begin(); i != serverList.end(); ++i)
    {
        ServerStatus status = i->second->getStatus();
        cpLog( LOG_DEBUG, "UAVM: %s, Status: %s", i->first.logData(), convertToString(status));
    }

}

/// End of File