138 lines
3.8 KiB
C#
138 lines
3.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Reflection;
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using System.Threading.Tasks;
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namespace Tapeti.Config
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{
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/// <summary>
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/// Injects a value for a controller method parameter.
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/// </summary>
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/// <param name="context"></param>
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public delegate object ValueFactory(IControllerMessageContext context);
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/// <summary>
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/// Handles the return value of a controller method.
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/// </summary>
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/// <param name="context"></param>
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/// <param name="value"></param>
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public delegate Task ResultHandler(IControllerMessageContext context, object value);
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/// <summary>
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/// Determines how the binding target is configured.
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/// </summary>
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public enum BindingTargetMode
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{
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/// <summary>
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/// Bind to a queue using the message's routing key
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/// </summary>
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Default,
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/// <summary>
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/// Bind to a queue without registering the message's routing key
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/// </summary>
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Direct
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}
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/// <summary>
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/// Provides information about the controller and method being registered.
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/// </summary>
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public interface IControllerBindingContext
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{
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/// <summary>
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/// The message class for this method.
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/// </summary>
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Type MessageClass { get; }
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/// <summary>
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/// The controller class for this binding.
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/// </summary>
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Type Controller { get; }
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/// <summary>
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/// The method for this binding.
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/// </summary>
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MethodInfo Method { get; }
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/// <summary>
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/// The list of parameters passed to the method.
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/// </summary>
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IReadOnlyList<IBindingParameter> Parameters { get; }
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/// <summary>
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/// The return type of the method.
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/// </summary>
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IBindingResult Result { get; }
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/// <summary>
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/// Sets the message class for this method. Can only be called once, which is always done first by the default MessageBinding.
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/// </summary>
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/// <param name="messageClass"></param>
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void SetMessageClass(Type messageClass);
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/// <summary>
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/// Determines how the binding target is configured. Can only be called once. Defaults to 'Default'.
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/// </summary>
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/// <param name="mode"></param>
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void SetBindingTargetMode(BindingTargetMode mode);
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/// <summary>
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/// Add middleware specific to this method.
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/// </summary>
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/// <param name="handler"></param>
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void Use(IControllerMiddlewareBase handler);
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}
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/// <summary>
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/// Information about a method parameter and how it gets it's value.
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/// </summary>
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public interface IBindingParameter
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{
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/// <summary>
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/// Reference to the reflection info for this parameter.
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/// </summary>
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ParameterInfo Info { get; }
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/// <summary>
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/// Determines if a binding has been set.
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/// </summary>
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bool HasBinding { get; }
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/// <summary>
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/// Sets the binding for this parameter. Can only be called once.
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/// </summary>
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/// <param name="valueFactory"></param>
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void SetBinding(ValueFactory valueFactory);
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}
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/// <summary>
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/// Information about the return type of a method.
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/// </summary>
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public interface IBindingResult
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{
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/// <summary>
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/// Reference to the reflection info for this return value.
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/// </summary>
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ParameterInfo Info { get; }
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/// <summary>
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/// Determines if a handler has been set.
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/// </summary>
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bool HasHandler { get; }
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/// <summary>
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/// Sets the handler for this return type. Can only be called once.
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/// </summary>
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/// <param name="resultHandler"></param>
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void SetHandler(ResultHandler resultHandler);
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}
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}
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