ComPlusInstanceContextInitializer.cs source code in C# .NET

                        Code:
                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / ComIntegration / ComPlusInstanceContextInitializer.cs / 1 / ComPlusInstanceContextInitializer.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------
namespace System.ServiceModel.ComIntegration
{ 
    using System;
    using System.ServiceModel.Channels; 
    using System.ServiceModel.Dispatcher; 
    using System.Diagnostics;
    using System.EnterpriseServices; 
    using System.Runtime.InteropServices;
    using System.IdentityModel.Claims;
    using System.IdentityModel.Policy;
    using System.Security.Principal; 
    using System.ServiceModel;
    using System.ServiceModel.Diagnostics; 
    using System.Transactions; 
    using System.Reflection;
    using System.IO; 


    class ComPlusInstanceContextInitializer : IInstanceContextInitializer
    { 
        ServiceInfo info;
 
        static readonly Guid IID_IServiceActivity = new Guid("67532E0C-9E2F-4450-A354-035633944E17"); 
        static readonly Guid DefaultPartitionId = new Guid("41E90F3E-56C1-4633-81C3-6E8BAC8BDD70");
 
        private static object manifestLock = new object();
        private static string manifestFileName = Guid.NewGuid().ToString();

        static ComPlusInstanceContextInitializer() 
        {
            AppDomain currentDomain = AppDomain.CurrentDomain; 
            currentDomain.AssemblyResolve += new ResolveEventHandler(ResolveAssembly); 
        }
 
        public ComPlusInstanceContextInitializer(ServiceInfo info)
        {
            this.info = info;
 
            if (this.info.HasUdts())
            { 
                string tempPath = String.Empty; 
                lock (manifestLock)
                { 

                    try
                    {
                        tempPath = Path.GetTempPath(); 
                    }
                    catch (Exception e) 
                    { 
                        if (DiagnosticUtility.IsFatal(e))
                            throw; 

                        throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(System.ServiceModel.ComIntegration.Error.CannotAccessDirectory(tempPath));
                    }
 
                    string manifestDirectory = tempPath + this.info.AppID.ToString();
                    if (Directory.Exists(manifestDirectory)) 
                        Directory.Delete(manifestDirectory, true); 
                }
 
            }
        }

        public void Initialize(InstanceContext instanceContext, Message message) 
        {
            object serviceConfig = null; 
            serviceConfig = SetupServiceConfig(instanceContext, message); 

            IServiceActivity activity; 
            activity = (IServiceActivity)SafeNativeMethods.CoCreateActivity(
                serviceConfig,
                IID_IServiceActivity);
 
            ComPlusSynchronizationContext syncContext;
            bool postSynchronous = (this.info.ThreadingModel == 
                                    ThreadingModel.MTA); 
            syncContext = new ComPlusSynchronizationContext(activity,
                                                            postSynchronous); 
            instanceContext.SynchronizationContext = syncContext;

            instanceContext.Closing += this.OnInstanceContextClosing;
            Marshal.ReleaseComObject(serviceConfig); 
        }
 
        public void OnInstanceContextClosing(object sender, EventArgs args) 
        {
            InstanceContext instanceContext = (InstanceContext)sender; 
            ComPlusSynchronizationContext syncContext;
            syncContext = (ComPlusSynchronizationContext)instanceContext.SynchronizationContext;
            syncContext.Dispose();
 
        }
 
        static Assembly ResolveAssembly(object sender, ResolveEventArgs args) 
        {
            int indexOfComma = args.Name.IndexOf(",", StringComparison.Ordinal); 
            if (indexOfComma == -1)
                return null;

            string assemblyGuid = args.Name.Substring(0, indexOfComma).Trim().ToLowerInvariant(); 

            return TypeCacheManager.Provider.ResolveAssembly(new Guid(assemblyGuid)); 
        } 

 
        object SetupServiceConfig(InstanceContext instanceContext, Message message)
        {
            object serviceConfig = new CServiceConfig();
 
            // Threading
            // 
            IServiceThreadPoolConfig threadPoolConfig; 
            threadPoolConfig = (IServiceThreadPoolConfig)(serviceConfig);
            switch(this.info.ThreadingModel) 
            {
            case ThreadingModel.MTA:
                threadPoolConfig.SelectThreadPool(ThreadPoolOption.MTA);
                break; 

            case ThreadingModel.STA: 
                threadPoolConfig.SelectThreadPool(ThreadPoolOption.STA); 
                break;
 
            default:
                DiagnosticUtility.DebugAssert("Unexpected threading model");

                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.UnexpectedThreadingModel()); 
            }
            threadPoolConfig.SetBindingInfo(BindingOption.BindingToPoolThread); 
 
            // SxS activation context properties
            // 


            // Manifest for VARIANT UDT types
            // 

            // this only gets executed if we actually have UDTs 
            if (this.info.HasUdts()) 
            {
                IServiceSxsConfig sxsConfig = serviceConfig as IServiceSxsConfig; 
                if (sxsConfig == null)
                {
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(System.ServiceModel.ComIntegration.Error.QFENotPresent());
                } 

                lock (manifestLock) 
                { 
                    string tempPath = String.Empty;
 
                    try
                    {
                        tempPath = Path.GetTempPath();
                    } 
                    catch (Exception e)
                    { 
                        if (DiagnosticUtility.IsFatal(e)) 
                            throw;
 
                        throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(System.ServiceModel.ComIntegration.Error.CannotAccessDirectory(tempPath));
                    }

                    string manifestDirectory = tempPath + this.info.AppID.ToString() + @"\"; 

 
                    if (!Directory.Exists(manifestDirectory)) 
                    {
                        try 
                        {
                            Directory.CreateDirectory(manifestDirectory);
                        }
                        catch (Exception e) 
                        {
                            if (DiagnosticUtility.IsFatal(e)) 
                                throw; 

                            throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(System.ServiceModel.ComIntegration.Error.CannotAccessDirectory(manifestDirectory)); 
                        }

                        Guid[] assemblyGuids = this.info.Assemblies;
                        ComIntegrationManifestGenerator.GenerateManifestCollectionFile(assemblyGuids, manifestDirectory + manifestFileName + @".manifest", manifestFileName); 

                        foreach (Guid g in assemblyGuids) 
                        { 
                            Type[] types = this.info.GetTypes(g);
                            if (types.Length > 0) 
                            {
                                String guidStr = g.ToString();
                                ComIntegrationManifestGenerator.GenerateWin32ManifestFile(types, manifestDirectory + guidStr + @".manifest", guidStr);
                            } 
                        }
                    } 
 

                    sxsConfig.SxsConfig(CSC_SxsConfig.CSC_NewSxs); 
                    sxsConfig.SxsName(manifestFileName + @".manifest");
                    sxsConfig.SxsDirectory(manifestDirectory);
                }
            } 

 
            // Partitions 
            //
            if (this.info.PartitionId != DefaultPartitionId) 
            {
                IServicePartitionConfig partitionConfig;
                partitionConfig = (IServicePartitionConfig)(serviceConfig);
                partitionConfig.PartitionConfig(PartitionOption.New); 
                partitionConfig.PartitionID(this.info.PartitionId);
            } 
 
            // Transactions
            // 
            IServiceTransactionConfig transactionConfig;
            transactionConfig = (IServiceTransactionConfig)(serviceConfig);
            transactionConfig.ConfigureTransaction(
                TransactionConfig.NoTransaction); 

            if ((this.info.TransactionOption == TransactionOption.Required) || 
                (this.info.TransactionOption == TransactionOption.Supported)) 
            {
                Transaction messageTransaction = null; 
                messageTransaction = MessageUtil.GetMessageTransaction(message);
                if (messageTransaction != null)
                {
                    TransactionProxy proxy = new TransactionProxy(info.AppID, info.Clsid); 
                    proxy.SetTransaction(messageTransaction);
 
                    instanceContext.Extensions.Add(proxy); 
                    IServiceSysTxnConfig sysTxnconfing = (IServiceSysTxnConfig)transactionConfig ;
                    IntPtr pUnk = TransactionProxyBuilder.CreateTransactionProxyTearOff(proxy); 
                    sysTxnconfing.ConfigureBYOTSysTxn(pUnk);
                    Marshal.Release(pUnk);
                }
            } 
            return serviceConfig;
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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ComPlusInstanceContextInitializer.cs source code in C# .NET

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