143 lines
6.0 KiB
C#
143 lines
6.0 KiB
C#
//------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------
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namespace System.ServiceModel
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{
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using System.Collections.Generic;
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using System.ServiceModel.Channels;
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using System.ServiceModel.Dispatcher;
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using System.ServiceModel.Description;
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// This attribute specifies what the service implementation
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// requires from the binding that dispatches messages.
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[AttributeUsage(ServiceModelAttributeTargets.ContractBehavior, AllowMultiple = true)]
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public sealed class DeliveryRequirementsAttribute : Attribute, IContractBehavior, IContractBehaviorAttribute
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{
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Type contractType;
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QueuedDeliveryRequirementsMode queuedDeliveryRequirements = QueuedDeliveryRequirementsMode.Allowed;
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bool requireOrderedDelivery = false;
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// Used to implement IContractBehaviorAttribute; if null, DeliveryRequirementsAttribute applies to any contract
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public Type TargetContract
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{
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get { return contractType; }
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set { contractType = value; }
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}
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// RequireQueuedDelivery: Validates that any binding associated
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// with the service/channel supports Queued
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// delivery.
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//
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// DisallowQueuedDelivery: Validates that no binding associated
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// with the service/channel supports Queued
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// delivery.
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//
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// Ignore: Agnostic
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public QueuedDeliveryRequirementsMode QueuedDeliveryRequirements
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{
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get { return queuedDeliveryRequirements; }
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set
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{
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if (QueuedDeliveryRequirementsModeHelper.IsDefined(value))
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{
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queuedDeliveryRequirements = value;
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}
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else
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{
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("value"));
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}
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}
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}
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// True: Validates that any binding associated
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// with the service/channel supports Ordered
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// delivery.
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//
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// False: Does no validation.
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public bool RequireOrderedDelivery
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{
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get { return requireOrderedDelivery; }
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set { requireOrderedDelivery = value; }
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}
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void IContractBehavior.Validate(ContractDescription description, ServiceEndpoint endpoint)
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{
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if (description == null)
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("description");
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if (endpoint == null)
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("endpoint");
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ValidateEndpoint(endpoint);
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}
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void IContractBehavior.AddBindingParameters(ContractDescription description, ServiceEndpoint endpoint, BindingParameterCollection parameters)
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{
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}
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void IContractBehavior.ApplyClientBehavior(ContractDescription description, ServiceEndpoint endpoint, ClientRuntime proxy)
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{
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}
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void IContractBehavior.ApplyDispatchBehavior(ContractDescription description, ServiceEndpoint endpoint, DispatchRuntime dispatch)
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{
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}
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void ValidateEndpoint(ServiceEndpoint endpoint)
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{
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string name = endpoint.Contract.ContractType.Name;
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EnsureQueuedDeliveryRequirements(name, endpoint.Binding);
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EnsureOrderedDeliveryRequirements(name, endpoint.Binding);
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}
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void EnsureQueuedDeliveryRequirements(string name, Binding binding)
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{
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if (QueuedDeliveryRequirements == QueuedDeliveryRequirementsMode.Required
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|| QueuedDeliveryRequirements == QueuedDeliveryRequirementsMode.NotAllowed)
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{
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IBindingDeliveryCapabilities caps = binding.GetProperty<IBindingDeliveryCapabilities>(new BindingParameterCollection());
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if (caps == null)
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{
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(
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SR.GetString(SR.SinceTheBindingForDoesnTSupportIBindingCapabilities2_1, name)));
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}
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else
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{
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bool queuedTransport = caps.QueuedDelivery;
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if (QueuedDeliveryRequirements == QueuedDeliveryRequirementsMode.Required && !queuedTransport)
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{
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(
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SR.GetString(SR.BindingRequirementsAttributeRequiresQueuedDelivery1, name)));
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}
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else if (QueuedDeliveryRequirements == QueuedDeliveryRequirementsMode.NotAllowed && queuedTransport)
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{
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(
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SR.GetString(SR.BindingRequirementsAttributeDisallowsQueuedDelivery1, name)));
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}
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}
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}
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}
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void EnsureOrderedDeliveryRequirements(string name, Binding binding)
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{
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if (RequireOrderedDelivery)
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{
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IBindingDeliveryCapabilities caps = binding.GetProperty<IBindingDeliveryCapabilities>(new BindingParameterCollection());
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if (caps == null)
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{
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(
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SR.GetString(SR.SinceTheBindingForDoesnTSupportIBindingCapabilities1_1, name)));
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}
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else
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{
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if (!caps.AssuresOrderedDelivery)
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{
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(
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SR.GetString(SR.TheBindingForDoesnTSupportOrderedDelivery1, name)));
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}
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}
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}
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}
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}
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}
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