Support ProblemDetails error response. Resolves #612

Author: Chris Martinez

src/Microsoft.AspNetCore.Mvc.Versioning/Versioning/ProblemDetailsErrorResponseProvider.cs

@@ -0,0 +1,67 @@
+namespace Microsoft.AspNetCore.Mvc.Versioning
+{
+    using Microsoft.AspNetCore.Mvc.Infrastructure;
+    using Microsoft.Extensions.DependencyInjection;
+    using System;
+
+    /// <summary>
+    /// Represents the provider for creating HTTP error responses matching <see cref="ProblemDetails"/> and RFC 7807.
+    /// </summary>
+    [CLSCompliant( false )]
+    public class ProblemDetailsErrorResponseProvider : IErrorResponseProvider
+    {
+        /// <inheritdoc />
+        public virtual IActionResult CreateResponse( ErrorResponseContext context )
+        {
+            if ( context == null )
+            {
+                throw new ArgumentNullException( nameof( context ) );
+            }
+
+            return NewResult( context );
+        }
+
+        /// <summary>
+        /// Creates and returns new problem details.
+        /// </summary>
+        /// <param name="context">The <see cref="ErrorResponseContext">error context</see> used to generate response.</param>
+        /// <returns>New <see cref="ProblemDetails">problem details</see>.</returns>
+        protected virtual ProblemDetails NewProblemDetails( ErrorResponseContext context )
+        {
+            if ( context == null )
+            {
+                throw new ArgumentNullException( nameof( context ) );
+            }
+
+            var httpContext = context.Request.HttpContext;
+            var factory = httpContext.RequestServices.GetRequiredService<ProblemDetailsFactory>();
+
+            return factory.CreateProblemDetails( httpContext, context.StatusCode, context.ErrorCode, default, context.Message, default );
+        }
+
+        /// <summary>
+        /// Creates and returns a new result.
+        /// </summary>
+        /// <param name="context">The <see cref="ErrorResponseContext">error context</see> used to generate response.</param>
+        /// <returns>A new <see cref="ObjectResult"/>.</returns>
+        protected virtual ObjectResult NewResult( ErrorResponseContext context )
+        {
+            if ( context == null )
+            {
+                throw new ArgumentNullException( nameof( context ) );
+            }
+
+            // match behavior of IClientErrorFactory.GetClientError
+            // REF: https://github.com/dotnet/aspnetcore/blob/master/src/Mvc/Mvc.Core/src/Infrastructure/ProblemDetailsClientErrorFactory.cs#L17
+            return new ObjectResult( NewProblemDetails( context ) )
+            {
+                StatusCode = context.StatusCode,
+                ContentTypes =
+                {
+                    "application/problem+json",
+                    "application/problem+xml",
+                },
+            };
+        }
+    }
+}