DeliveryRequirementsAttribute.cs source code in C# .NET

                        Code:
                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / DeliveryRequirementsAttribute.cs / 1 / DeliveryRequirementsAttribute.cs
                        
                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------
namespace System.ServiceModel
{ 
    using System.Collections.Generic;
    using System.ServiceModel.Channels; 
    using System.ServiceModel.Dispatcher; 
    using System.ServiceModel.Description;
 
    // This attribute specifies what the service implementation
    // requires from the binding that dispatches messages.
    [AttributeUsage(ServiceModelAttributeTargets.ContractBehavior, AllowMultiple = true)]
    public sealed class DeliveryRequirementsAttribute : Attribute, IContractBehavior, IContractBehaviorAttribute 
    {
        Type contractType; 
        QueuedDeliveryRequirementsMode queuedDeliveryRequirements = QueuedDeliveryRequirementsMode.Allowed; 
        bool requireOrderedDelivery = false;
 
        // Used to implement IContractBehaviorAttribute; if null, DeliveryRequirementsAttribute applies to any contract
        public Type TargetContract
        {
            get { return contractType; } 
            set { contractType = value; }
        } 
 
        // RequireQueuedDelivery: Validates that any binding associated
        // with the service/channel supports Queued 
        // delivery.
        //
        // DisallowQueuedDelivery: Validates that no binding associated
        // with the service/channel supports Queued 
        // delivery.
        // 
        // Ignore: Agnostic 
        public QueuedDeliveryRequirementsMode QueuedDeliveryRequirements
        { 
            get { return queuedDeliveryRequirements; }
            set
            {
                if (QueuedDeliveryRequirementsModeHelper.IsDefined(value)) 
                {
                    queuedDeliveryRequirements = value; 
                } 
                else
                { 
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("value"));
                }
            }
        } 

        // True: Validates that any binding associated 
        // with the service/channel supports Ordered 
        // delivery.
        // 
        // False: Does no validation.
        public bool RequireOrderedDelivery
        {
            get { return requireOrderedDelivery; } 
            set { requireOrderedDelivery = value; }
        } 
 
        void IContractBehavior.Validate(ContractDescription description, ServiceEndpoint endpoint)
        { 
            if (description == null)
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("description");
            if (endpoint == null)
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("endpoint"); 

            ValidateEndpoint(endpoint); 
        } 

        void IContractBehavior.AddBindingParameters(ContractDescription description, ServiceEndpoint endpoint, BindingParameterCollection parameters) 
        {
        }

        void IContractBehavior.ApplyClientBehavior(ContractDescription description, ServiceEndpoint endpoint, ClientRuntime proxy) 
        {
        } 
 
        void IContractBehavior.ApplyDispatchBehavior(ContractDescription description, ServiceEndpoint endpoint, DispatchRuntime dispatch)
        { 
        }

        void ValidateEndpoint(ServiceEndpoint endpoint)
        { 
            string name = endpoint.Contract.ContractType.Name;
            EnsureQueuedDeliveryRequirements(name, endpoint.Binding); 
            EnsureOrderedDeliveryRequirements(name, endpoint.Binding); 
        }
 
        void EnsureQueuedDeliveryRequirements(string name, Binding binding)
        {
            if (QueuedDeliveryRequirements == QueuedDeliveryRequirementsMode.Required
                || QueuedDeliveryRequirements == QueuedDeliveryRequirementsMode.NotAllowed) 
            {
                IBindingDeliveryCapabilities caps = binding.GetProperty(new BindingParameterCollection()); 
                if (caps == null) 
                {
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException( 
                        SR.GetString(SR.SinceTheBindingForDoesnTSupportIBindingCapabilities2_1, name)));
                }
                else
                { 
                    bool queuedTransport = caps.QueuedDelivery;
                    if (QueuedDeliveryRequirements == QueuedDeliveryRequirementsMode.Required && !queuedTransport) 
                    { 
                        throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(
                            SR.GetString(SR.BindingRequirementsAttributeRequiresQueuedDelivery1, name))); 
                    }
                    else if (QueuedDeliveryRequirements == QueuedDeliveryRequirementsMode.NotAllowed && queuedTransport)
                    {
                        throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException( 
                            SR.GetString(SR.BindingRequirementsAttributeDisallowsQueuedDelivery1, name)));
                    } 
                } 
            }
        } 

        void EnsureOrderedDeliveryRequirements(string name, Binding binding)
        {
            if (RequireOrderedDelivery) 
            {
                IBindingDeliveryCapabilities caps = binding.GetProperty(new BindingParameterCollection()); 
                if (caps == null) 
                {
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException( 
                        SR.GetString(SR.SinceTheBindingForDoesnTSupportIBindingCapabilities1_1, name)));
                }
                else
                { 
                    if (!caps.AssuresOrderedDelivery)
                    { 
                        throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException( 
                            SR.GetString(SR.TheBindingForDoesnTSupportOrderedDelivery1, name)));
                    } 
                }
            }
        }
    } 
}
 

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

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