moved logic to request mapper and public setter gone

src/Ocelot/Request/Mapper/IRequestMapper.cs

@@ -1,12 +1,13 @@
 namespace Ocelot.Request.Mapper
 {
     using Microsoft.AspNetCore.Http;
+    using Ocelot.Configuration;
     using Ocelot.Responses;
     using System.Net.Http;
     using System.Threading.Tasks;
 
     public interface IRequestMapper
     {
-        Task<Response<HttpRequestMessage>> Map(HttpRequest request);
+        Task<Response<HttpRequestMessage>> Map(HttpRequest request, DownstreamReRoute downstreamReRoute);
     }
 }

src/Ocelot/Request/Mapper/RequestMapper.cs

@@ -3,6 +3,7 @@
     using Microsoft.AspNetCore.Http;
     using Microsoft.AspNetCore.Http.Extensions;
     using Microsoft.Extensions.Primitives;
+    using Ocelot.Configuration;
     using Ocelot.Responses;
     using System;
     using System.Collections.Generic;
@@ -15,14 +16,14 @@
     {
         private readonly string[] _unsupportedHeaders = { "host" };
 
-        public async Task<Response<HttpRequestMessage>> Map(HttpRequest request)
+        public async Task<Response<HttpRequestMessage>> Map(HttpRequest request, DownstreamReRoute downstreamReRoute)
         {
             try
             {
                 var requestMessage = new HttpRequestMessage()
                 {
                     Content = await MapContent(request),
-                    Method = MapMethod(request),
+                    Method = MapMethod(request, downstreamReRoute),
                     RequestUri = MapUri(request)
                 };
 
@@ -71,8 +72,13 @@
             }
         }
 
-        private HttpMethod MapMethod(HttpRequest request)
+        private HttpMethod MapMethod(HttpRequest request, DownstreamReRoute downstreamReRoute)
         {
+            if (!string.IsNullOrEmpty(downstreamReRoute?.DownstreamHttpMethod))
+            {
+                return new HttpMethod(downstreamReRoute.DownstreamHttpMethod);
+            }
+
             return new HttpMethod(request.Method);
         }
 

src/Ocelot/Request/Middleware/DownstreamRequest.cs

@@ -24,7 +24,7 @@ namespace Ocelot.Request.Middleware
 
         public HttpRequestHeaders Headers { get; }
 
-        public string Method { get; set; }
+        public string Method { get; }
 
         public string OriginalString { get; }
 

src/Ocelot/Request/Middleware/DownstreamRequestInitialiserMiddleware.cs

@@ -24,7 +24,7 @@ namespace Ocelot.Request.Middleware
 
         public async Task Invoke(DownstreamContext context)
         {
-            var downstreamRequest = await _requestMapper.Map(context.HttpContext.Request);
+            var downstreamRequest = await _requestMapper.Map(context.HttpContext.Request, context.DownstreamReRoute);
 
             if (downstreamRequest.IsError)
             {
@@ -34,11 +34,6 @@ namespace Ocelot.Request.Middleware
 
             context.DownstreamRequest = _creator.Create(downstreamRequest.Data);
 
-            if (!string.IsNullOrEmpty(context.DownstreamReRoute?.DownstreamHttpMethod))
-            {
-                context.DownstreamRequest.Method = context.DownstreamReRoute.DownstreamHttpMethod;
-            }
-
             await _next.Invoke(context);
         }
     }

test/Ocelot.UnitTests/Request/DownstreamRequestInitialiserMiddlewareTests.cs

@@ -12,6 +12,7 @@
     using Ocelot.Responses;
     using Shouldly;
     using System.Net.Http;
+    using Ocelot.Configuration;
     using TestStack.BDDfy;
     using Xunit;
 
@@ -69,20 +70,16 @@
                 .BDDfy();
         }
 
-        [Theory]
-        [InlineData("POST", "POST")]
-        [InlineData(null, "GET")]
-        [InlineData("", "GET")]
-        public void Should_map_downstream_reroute_method_to_downstream_request(string input, string expected)
+        [Fact]
+        public void Should_map_downstream_reroute_method_to_downstream_request()
         {
             this.Given(_ => GivenTheHttpContextContainsARequest())
-                .And(_ => GivenTheDownstreamReRouteMethodIs(input))
                 .And(_ => GivenTheMapperWillReturnAMappedRequest())
                 .When(_ => WhenTheMiddlewareIsInvoked())
                 .Then(_ => ThenTheContexRequestIsMappedToADownstreamRequest())
                 .And(_ => ThenTheDownstreamRequestIsStored())
                 .And(_ => ThenTheNextMiddlewareIsInvoked())
-                .And(_ => ThenTheDownstreamRequestMethodIs(expected))
+                .And(_ => ThenTheDownstreamRequestMethodIs("GET"))
                 .BDDfy();
         }
 
@@ -98,11 +95,6 @@
                 .BDDfy();
         }
 
-        private void GivenTheDownstreamReRouteMethodIs(string input)
-        {
-            _downstreamContext.DownstreamReRoute = new DownstreamReRouteBuilder().WithDownStreamHttpMethod(input).Build();
-        }
-
         private void ThenTheDownstreamRequestMethodIs(string expected)
         {
             _downstreamContext.DownstreamRequest.Method.ShouldBe(expected);
@@ -120,7 +112,7 @@
             _mappedRequest = new OkResponse<HttpRequestMessage>(new HttpRequestMessage(HttpMethod.Get, "http://www.bbc.co.uk"));
 
             _requestMapper
-                .Setup(rm => rm.Map(It.IsAny<HttpRequest>()))
+                .Setup(rm => rm.Map(It.IsAny<HttpRequest>(), It.IsAny<DownstreamReRoute>()))
                 .ReturnsAsync(_mappedRequest);
         }
 
@@ -129,7 +121,7 @@
             _mappedRequest = new ErrorResponse<HttpRequestMessage>(new UnmappableRequestError(new System.Exception("boooom!")));
 
             _requestMapper
-                .Setup(rm => rm.Map(It.IsAny<HttpRequest>()))
+                .Setup(rm => rm.Map(It.IsAny<HttpRequest>(), It.IsAny<DownstreamReRoute>()))
                 .ReturnsAsync(_mappedRequest);
         }
 
@@ -140,7 +132,7 @@
 
         private void ThenTheContexRequestIsMappedToADownstreamRequest()
         {
-            _requestMapper.Verify(rm => rm.Map(_httpRequest.Object), Times.Once);
+            _requestMapper.Verify(rm => rm.Map(_httpRequest.Object, _downstreamContext.DownstreamReRoute), Times.Once);
         }
 
         private void ThenTheDownstreamRequestIsStored()

test/Ocelot.UnitTests/Request/Mapper/RequestMapperTests.cs

@@ -13,6 +13,8 @@
     using System.Security.Cryptography;
     using System.Text;
     using System.Threading.Tasks;
+    using Ocelot.Configuration;
+    using Ocelot.Configuration.Builder;
     using TestStack.BDDfy;
     using Xunit;
 
@@ -27,6 +29,8 @@
 
         private List<KeyValuePair<string, StringValues>> _inputHeaders = null;
 
+        private DownstreamReRoute _downstreamReRoute;
+
         public RequestMapperTests()
         {
             _httpContext = new DefaultHttpContext();
@@ -82,6 +86,21 @@
                 .BDDfy();
         }
 
+        [Theory]
+        [InlineData("", "GET")]
+        [InlineData(null, "GET")]
+        [InlineData("POST", "POST")]
+        public void Should_use_downstream_reroute_method_if_set(string input, string expected)
+        {
+            this.Given(_ => GivenTheInputRequestHasMethod("GET"))
+                .And(_ => GivenTheDownstreamReRouteMethodIs(input))
+                .And(_ => GivenTheInputRequestHasAValidUri())
+                .When(_ => WhenMapped())
+                .Then(_ => ThenNoErrorIsReturned())
+                .And(_ => ThenTheMappedRequestHasMethod(expected))
+                .BDDfy();
+        }
+
         [Fact]
         public void Should_map_all_headers()
         {
@@ -154,16 +173,6 @@
                 .BDDfy();
         }
 
-        private void GivenTheInputRequestHasNoContentLength()
-        {
-            _inputRequest.ContentLength = null;
-        }
-
-        private void GivenTheInputRequestHasNoContentType()
-        {
-            _inputRequest.ContentType = null;
-        }
-
         [Fact]
         public void Should_map_content_headers()
         {
@@ -212,6 +221,22 @@
                 .BDDfy();
         }
 
+        private void GivenTheDownstreamReRouteMethodIs(string input)
+        {
+            _downstreamReRoute = new DownstreamReRouteBuilder().WithDownStreamHttpMethod(input).Build();
+        }
+
+        private void GivenTheInputRequestHasNoContentLength()
+        {
+            _inputRequest.ContentLength = null;
+        }
+
+        private void GivenTheInputRequestHasNoContentType()
+        {
+            _inputRequest.ContentType = null;
+        }
+
+
         private void ThenTheContentHeadersAreNotAddedToNonContentHeaders()
         {
             _mappedRequest.Data.Headers.ShouldNotContain(x => x.Key == "Content-Disposition");
@@ -380,7 +405,7 @@
 
         private async Task WhenMapped()
         {
-            _mappedRequest = await _requestMapper.Map(_inputRequest);
+            _mappedRequest = await _requestMapper.Map(_inputRequest, _downstreamReRoute);
         }
 
         private void ThenNoErrorIsReturned()