cs/MamdaMultiSecurityManager.cs

/* $Id: MamdaMultiSecurityManager.cs,v 1.2.32.5 2012/08/24 16:12:11 clintonmcdowell Exp $
 *
 * OpenMAMA: The open middleware agnostic messaging API
 * Copyright (C) 2011 NYSE Technologies, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA
 */

using System;
using System.Collections;
using Wombat.Containers;

namespace Wombat
{
    public class MamdaMultiSecurityManager : MamdaMsgListener
    {
        public MamdaMultiSecurityManager(string symbol)
        {
            mListeners = new HashMap();
            mHandlers = new ArrayList();
            mSymbol = symbol;
        }

        public void addHandler(MamdaMultiSecurityHandler handler)
        {
            mHandlers.Add(handler);
        }

        public void addListener(
            MamdaMsgListener  listener,
            string            symbol)
        {
            ((ArrayList)mListeners.valueOf(symbol)).Add(listener);
        }

        public void onMsg(
            MamdaSubscription subscription,
            MamaMsg           msg,
            mamaMsgType       msgType)
        {
            try
            {
                string symbol = msg.getString(MamdaCommonFields.ISSUE_SYMBOL);
                if(symbol == null)
                {
                    return;
                }
                // First handle the message internally. i.e. create listener
                // lists, notify handlers etc.
                switch (msgType)
                {
                    case mamaMsgType.MAMA_MSG_TYPE_INITIAL:
                    case mamaMsgType.MAMA_MSG_TYPE_RECAP:
                        handleFullImage(subscription, msg, msgType, symbol);
                        break;
                    case mamaMsgType.MAMA_MSG_TYPE_END_OF_INITIALS:/*Don't forward.*/
                        return;
                    default:
                        break;
                }
                // Now pass to other listeners (if any)
                forwardMsg(subscription, msg, msgType, symbol);
            }
            catch (MamdaDataException)
            {
            }
        }

        private void handleFullImage(
            MamdaSubscription subscription,
            MamaMsg           msg,
            mamaMsgType       msgType,
            string            symbol)
        {
            if(!mListeners.containsKey(symbol))
            {
                checkSecurityCreateNotify(subscription, symbol);
            }
        }

        private void checkSecurityCreateNotify(
            MamdaSubscription subscription,
            string            symbol)
        {
            mListeners.put(symbol, new ArrayList());
            foreach (MamdaMultiSecurityHandler handler in mHandlers)
            {
                handler.onSecurityCreate(subscription, this, symbol);
            }
        }

        private void forwardMsg(
            MamdaSubscription  subscription,
            MamaMsg            msg,
            mamaMsgType        msgType,
            String             symbol)
        {
            ArrayList securityListeners = (ArrayList)mListeners.valueOf(symbol);
            if ((securityListeners != null) && (securityListeners.Count > 0))
            {
                forwardMsg(
                    securityListeners,
                    subscription,
                    msg,
                    msgType);
            }
            else
            {
                /*Needed for new symbols created intraday*/
                checkSecurityCreateNotify(subscription, symbol);
            }
        }

        private void forwardMsg(
            ArrayList           listeners,
            MamdaSubscription   subscription,
            MamaMsg             msg,
            mamaMsgType         msgType)
        {
            foreach (MamdaMsgListener listener in listeners)
            {
                listener.onMsg(subscription, msg, msgType);
            }
        }

        /*Map containing a list of listeners for each security.
          Keyed on the symbol*/
        private Map mListeners;

        /*List of MultiSecurityHandlers for creation callback notification*/
        private ArrayList mHandlers;

        /*Group symbol subscribed to*/
        private string mSymbol;
    }
}