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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.Reflection;
using Matrix.Common.Core;
using Matrix.Framework.MessageBus.Core;

#if Matrix_Diagnostics
using Matrix.Common.Diagnostics;
#endif

namespace Matrix.Framework.MessageBus.Clients
{
    /// <summary>
    /// Class extends default client functionality with ability to send invokes directly to consumer object methods,
    /// using a fast invoker and reflection to do so.
    /// 
    /// Optional handling parameters: IMessageBusClient, Envelope
    /// </summary>
    public class ActiveInvocatorClient : ActiveClient
    {
        /// <summary>
        /// Describe and implement the handling capabilities related to a specific type of message.
        /// </summary>
        internal class TypeHandler
        {
            internal FastInvokeHelper.FastInvokeHandlerDelegate DelegateInstance;
            internal MessageBusClient ClientInstance = null;
            internal bool EnvelopeRequired = false;

            internal object Invoke(object target, Envelope envelope)
            {
                object[] parameters = null;
                if (ClientInstance != null && EnvelopeRequired)
                {
                    parameters = new object[] { ClientInstance, envelope, envelope.Message};
                }
                else if (ClientInstance != null && EnvelopeRequired == false)
                {
                    parameters = new object[] { ClientInstance, envelope.Message};
                }
                else if (ClientInstance == null && EnvelopeRequired)
                {
                    parameters = new object[] { envelope, envelope.Message};
                }
                else if (ClientInstance == null && EnvelopeRequired == false)
                {
                    parameters = new object[] { envelope.Message};
                }

                return DelegateInstance(target, parameters);
            }
        }

        volatile Dictionary<Type, TypeHandler> _typeHandlersHotSwap = new Dictionary<Type, TypeHandler>();

        volatile object _source = null;
        /// <summary>
        /// The instance that is supposed to consume the messages.
        /// </summary>
        public virtual object Source
        {
            get
            {
                return _source;
            }

            set
            {
                _source = value;

                if (_source != null)
                {
                    List<MethodInfo> receiverMethods = ReflectionHelper.GatherTypeMethodsByAttribute(_source.GetType(), typeof(EnvelopeReceiverAttribute),
                                                                                             BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance, true);

                    Dictionary<Type, TypeHandler> typeHandlersHotSwap = new Dictionary<Type, TypeHandler>();

                    foreach (MethodInfo methodInfo in receiverMethods)
                    {
                        TypeHandler handler = null;
                        Type typeHandled = null;

                        ParameterInfo[] parameters = methodInfo.GetParameters();
                        if (parameters.Length == 3
                            && (parameters[0].ParameterType == typeof(MessageBusClient))
                            && (parameters[1].ParameterType == typeof(Envelope)))
                        {// Handling the client instance plus the envelope plus the parameter.
                            typeHandled = parameters[2].ParameterType;
                            handler = new TypeHandler() { EnvelopeRequired = true, ClientInstance = this, DelegateInstance = FastInvokeHelper.GetMethodInvoker(methodInfo, true, false) };
                        }
                        else if (parameters.Length == 2 &&
                                 (parameters[0].ParameterType == typeof(MessageBusClient)))
                        {// Handling the client instance plus the parameter.
                            typeHandled = parameters[1].ParameterType;
                            handler = new TypeHandler() { EnvelopeRequired = false, ClientInstance = this, DelegateInstance = FastInvokeHelper.GetMethodInvoker(methodInfo, true, false) };
                        }
                        else if (parameters.Length == 2 &&
                                 (parameters[0].ParameterType == typeof(Envelope)))
                        {// Handling the client instance plus the parameter.
                            typeHandled = parameters[1].ParameterType;
                            handler = new TypeHandler() { EnvelopeRequired = true, ClientInstance = null, DelegateInstance = FastInvokeHelper.GetMethodInvoker(methodInfo, true, false) };
                        }
                        else if (parameters.Length == 1)
                        {// Hanlidng the parameter only.
                            typeHandled = parameters[0].ParameterType;
                            handler = new TypeHandler() { DelegateInstance = FastInvokeHelper.GetMethodInvoker(methodInfo, true, false) };
                        }

                        if (handler == null || typeHandled == null)
                        {
#if Matrix_Diagnostics
                            SystemMonitor.Error("Failed to establish parameter format for method [" + methodInfo.Name + ", type " + _source.GetType().Name + "].");
#endif
                        }
                        else
                        {
                            typeHandlersHotSwap.Add(typeHandled, handler);
                        }
                    }

                    // Hot swap the 2 instances.
                    _typeHandlersHotSwap = typeHandlersHotSwap;
                }
                else
                {
                    _typeHandlersHotSwap = new Dictionary<Type, TypeHandler>();
                }
            }
        }

        public override Type OptionalSourceType
        {
            get
            {
                object source = _source;
                if (source != null)
                {
                    return source.GetType();
                }

                return null;
            }
        }

        /// <summary>
        /// Constructor.
        /// </summary>
        public ActiveInvocatorClient(string name)
            : base(name)
        { }

        /// <summary>
        /// Constructor.
        /// </summary>
        public ActiveInvocatorClient(ClientId id)
            : base(id)
        { }

        public override void Dispose()
        {
            this.Source = null;
            base.Dispose();
        }

        protected override void OnPerformExecution(Envelope envelope)
        {
            Dictionary<Type, TypeHandler> typeHandlersHotSwap = _typeHandlersHotSwap;
            Type messageType = envelope.Message.GetType();
            object target = _source;
            if (target != null && envelope.Message != null && typeHandlersHotSwap != null)
            {
                TypeHandler handler;
                if (typeHandlersHotSwap.TryGetValue(messageType, out handler))
                {
                    handler.Invoke(target, envelope);
                }
            }
        }

    }
}

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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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