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The Super Pool Framework

, 31 Aug 2010
The Super Pool is a framework for decoupled communication and management of components. The Super Pool introduces a natural asynchronous communication environment into your solution that can be fluently spread over different components, threads, processes, or even computers or networks.
Matrix_SuperPool_Standalone.zip
Lib
PowerCollections.dll
Matrix.Framework.SuperPool.Standalone
bin
Debug
Release
Common.Sockets
Common
Core
Matrix.Common.Core
Collections
Identification
Results
Serialization
Matrix.Common.Extended
FastSerialization
Operationals
ThreadPools
Matrix.Common.Sockets
Common
Core
Matrix.Framework.MessageBus
Client
Clients
ExecutionStrategies
Core
Net
Messages
Matrix.Framework.SuperPool
Call
Clients
Core
DynamicProxy
Subscription
Matrix.Framework.SuperPool.Standalone.csproj.user
Properties
Tests
Lib
log4net.dll
Matrix.Common.Core.dll
Matrix.Common.Diagnostics.dll
Matrix.Common.Diagnostics.FrontEnd.dll
Matrix.Common.Extended.dll
Matrix.Common.FrontEnd.dll
Matrix.Common.Sockets.dll
Matrix.Framework.TestFramework.dll
nunit.framework.dll
Matrix.Framework.SuperPool.Demonstration
bin
Debug
Release
FormServer.cs.bak
Properties
Matrix.Framework.SuperPool.Test
bin
Debug
Release
Matrix.Framework.SuperPool.Test.vshost.exe.manifest
MultiThreadTests
Properties
Settings.settings
SpeedTests
Matrix.Framework.SuperPool.UnitTest
bin
Debug
Release
Matrix.Framework.SuperPool.UnitTest.csproj.user
Properties
// -----
// Copyright 2010 Deyan Timnev
// This file is part of the Matrix Platform (www.matrixplatform.com).
// The Matrix Platform 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 3 of the License, or (at your option) any later version. The Matrix Platform 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 the Matrix Platform. If not, see http://www.gnu.org/licenses/lgpl.html
// -----
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using Matrix.Common.Core;

namespace Matrix.Common.Core.Serialization
{
    /// <summary>
    /// Base class for message serializers.
    /// </summary>
    public abstract class SerializerBase : ISerializer
    {
        /// <summary>
        /// 16 MB at the moment (256 ^ 3)
        /// </summary>
        public const int MaxMessageSize = 16777216;

        /// <summary>
        /// Constructor.
        /// </summary>
        protected SerializerBase()
        {
        }

        #region Abstract Members

        protected abstract bool SerializeData(Stream stream, object message);
        protected abstract object DeserializeData(Stream stream);

        #endregion

        public virtual object Duplicate(object item)
        {
            using (MemoryStream stream = new MemoryStream())
            {
                if (SerializeData(stream, item) == false)
                {
                    throw new InvalidDataException("Failed to serialize item [{" + item.ToString() + "}].");
                }

                using(MemoryStream stream2 = new MemoryStream(stream.GetBuffer()))
                {
                    return DeserializeData(stream2);
                }
            }
        }

        /// <summary>
        /// Returns false if failed to serialize.
        /// </summary>
        /// <param name="stream"></param>
        /// <param name="message"></param>
        /// <returns></returns>
        public bool Serialize(MemoryStream stream, object message)
        {
            if (message == null)
            {
                return false;
            }

            long startPosition = stream.Position;

            // Placeholder.
            byte[] sizeBytes = BitConverter.GetBytes(int.MaxValue);
            stream.Write(sizeBytes, 0, sizeBytes.Length);

            if (SerializeData(stream, message) == false)
            {
                stream.Seek(startPosition, SeekOrigin.Begin);
                return false;
            }

            int length = (int)stream.Position - (int)startPosition;
            
            long lastPosition = stream.Position;
            stream.Seek(startPosition, SeekOrigin.Begin);

            if (length > MaxMessageSize)
            {
                CoreSystemMonitor.OperationError("Message size too big.");
                return false;
            }

            // Encoding (int.MaxValue - value); this helps diagnostics of message transport errors.
            sizeBytes = BitConverter.GetBytes(int.MaxValue - length);
            stream.Write(sizeBytes, 0, sizeBytes.Length);

            stream.Seek(lastPosition, SeekOrigin.Begin);

            return true;
        }

        #region ISerializer Members

        public object Deserialize(MemoryStream stream)
        {
            long startPosition = stream.Position;

            byte[] sizeBytes = new byte[sizeof(int)];
            if (stream.Read(sizeBytes, 0, sizeBytes.Length) != sizeBytes.Length)
            {// Not enough info to extract size.
                stream.Seek(startPosition, SeekOrigin.Begin);
                return null;
            }

            int size = int.MaxValue - BitConverter.ToInt32(sizeBytes, 0);

            if (size > MaxMessageSize)
            {// Invalid size; we do not seek to start since data stream is already corrupt; this will indicate the owner
                // to clear it and try to recover.
                throw new InvalidDataException();
            }

            if (stream.Length - stream.Position + sizeof(int) < size)
            {// Not enough info to extract item.
                stream.Seek(startPosition, SeekOrigin.Begin);
                return null;
            }

            return DeserializeData(stream);
        }

        #endregion

    }
}

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Deyan Timnev
Product Manager Ingenious Ltd, Bulgaria
Bulgaria Bulgaria
I worked for a few years as a C++/Win32 developer and software architect, and then moved on to the .NET environment where I was able to discover the beauty of managed programming.
 
I am currently involved in the development and management of Open Forex Platform (www.openforexplatform.com) and the Matrix Platform (www.matrixplatform.com).

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