regex for url match, means annoying constructor ocelot configuration object but cant work out a better way to do this at the moment

src/Ocelot.Library/Infrastructure/Configuration/Configuration.cs

@@ -1,14 +0,0 @@
-using System.Collections.Generic;
-
-namespace Ocelot.Library.Infrastructure.Configuration
-{
-    public class Configuration
-    {
-        public Configuration()
-        {
-            ReRoutes = new List<ReRoute>();
-        }
-
-        public List<ReRoute> ReRoutes { get; set; }
-    }
-}

src/Ocelot.Library/Infrastructure/Configuration/DownstreamTemplateAlreadyUsedError.cs

@@ -1,15 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-using Ocelot.Library.Infrastructure.Responses;
-
-namespace Ocelot.Library.Infrastructure.Configuration
-{
-    public class DownstreamTemplateAlreadyUsedError : Error
-    {
-        public DownstreamTemplateAlreadyUsedError(string message) : base(message)
-        {
-        }
-    }
-}

src/Ocelot.Library/Infrastructure/Configuration/IConfigurationValidator.cs

@@ -1,13 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-using Ocelot.Library.Infrastructure.Responses;
-
-namespace Ocelot.Library.Infrastructure.Configuration
-{
-    public interface IConfigurationValidator
-    {
-        Response<ConfigurationValidationResult> IsValid(Configuration configuration);
-    }
-}

src/Ocelot.Library/Infrastructure/Configuration/IOcelotConfiguration.cs

@@ -0,0 +1,9 @@
+using System.Collections.Generic;
+
+namespace Ocelot.Library.Infrastructure.Configuration
+{
+    public interface IOcelotConfiguration
+    {
+        List<ReRoute> ReRoutes { get; }
+    }
+}

src/Ocelot.Library/Infrastructure/Configuration/OcelotConfiguration.cs

@@ -0,0 +1,57 @@
+using System.Collections.Generic;
+using Microsoft.Extensions.Options;
+using Ocelot.Library.Infrastructure.Configuration.Yaml;
+
+namespace Ocelot.Library.Infrastructure.Configuration
+{
+    public class OcelotConfiguration : IOcelotConfiguration
+    {
+        private readonly IOptions<YamlConfiguration> _options;
+        private readonly List<ReRoute> _reRoutes;
+        private const string RegExMatchEverything = ".*";
+        private const string RegExMatchEndString = "$";
+
+        public OcelotConfiguration(IOptions<YamlConfiguration> options)
+        {
+            _options = options;
+            _reRoutes = new List<ReRoute>();
+            SetReRoutes();
+        }
+
+        private void SetReRoutes()
+        {
+            foreach(var reRoute in _options.Value.ReRoutes)
+            {
+                var upstreamTemplate = reRoute.UpstreamTemplate;
+                var placeholders = new List<string>();
+
+                for (int i = 0; i < upstreamTemplate.Length; i++)
+                {
+                    if (IsPlaceHolder(upstreamTemplate, i))
+                    {
+                        var postitionOfPlaceHolderClosingBracket = upstreamTemplate.IndexOf('}', i);
+                        var difference = postitionOfPlaceHolderClosingBracket - i + 1;
+                        var variableName = upstreamTemplate.Substring(i, difference);
+                        placeholders.Add(variableName);
+                    }
+                }
+
+                foreach (var placeholder in placeholders)
+                {
+                    upstreamTemplate = upstreamTemplate.Replace(placeholder, RegExMatchEverything);
+                }
+
+                upstreamTemplate = $"{upstreamTemplate}{RegExMatchEndString}";
+
+                _reRoutes.Add(new ReRoute(reRoute.DownstreamTemplate, reRoute.UpstreamTemplate, reRoute.UpstreamHttpMethod, upstreamTemplate));
+            }   
+        }
+
+        private static bool IsPlaceHolder(string upstreamTemplate, int i)
+        {
+            return upstreamTemplate[i] == '{';
+        }
+
+        public List<ReRoute> ReRoutes => _reRoutes;
+    }
+}

src/Ocelot.Library/Infrastructure/Configuration/ReRoute.cs

@@ -2,8 +2,17 @@
 {
     public class ReRoute
     {
-        public string DownstreamTemplate { get; set; }
-        public string UpstreamTemplate { get; set; }
-        public string UpstreamHttpMethod { get; set; }
+        public ReRoute(string downstreamTemplate, string upstreamTemplate, string upstreamHttpMethod, string upstreamTemplatePattern)
+        {
+            DownstreamTemplate = downstreamTemplate;
+            UpstreamTemplate = upstreamTemplate;
+            UpstreamHttpMethod = upstreamHttpMethod;
+            UpstreamTemplatePattern = upstreamTemplatePattern;
+        }
+
+        public string DownstreamTemplate { get; private set; }
+        public string UpstreamTemplate { get; private set; }
+        public string UpstreamTemplatePattern { get; private set; }
+        public string UpstreamHttpMethod { get; private set; }
     }
 }

src/Ocelot.Library/Infrastructure/Configuration/Yaml/ConfigurationValidationResult.cs

@@ -1,7 +1,7 @@
 using System.Collections.Generic;
 using Ocelot.Library.Infrastructure.Responses;
 
-namespace Ocelot.Library.Infrastructure.Configuration
+namespace Ocelot.Library.Infrastructure.Configuration.Yaml
 {
     public class ConfigurationValidationResult
     {

src/Ocelot.Library/Infrastructure/Configuration/Yaml/ConfigurationValidator.cs

@@ -2,11 +2,11 @@
 using System.Linq;
 using Ocelot.Library.Infrastructure.Responses;
 
-namespace Ocelot.Library.Infrastructure.Configuration
+namespace Ocelot.Library.Infrastructure.Configuration.Yaml
 {
     public class ConfigurationValidator : IConfigurationValidator
     {
-        public Response<ConfigurationValidationResult> IsValid(Configuration configuration)
+        public Response<ConfigurationValidationResult> IsValid(YamlConfiguration configuration)
         {
             var duplicateUpstreamTemplates = configuration.ReRoutes
                 .Select(r => r.DownstreamTemplate)

src/Ocelot.Library/Infrastructure/Configuration/Yaml/DownstreamTemplateAlreadyUsedError.cs

@@ -0,0 +1,11 @@
+using Ocelot.Library.Infrastructure.Responses;
+
+namespace Ocelot.Library.Infrastructure.Configuration.Yaml
+{
+    public class DownstreamTemplateAlreadyUsedError : Error
+    {
+        public DownstreamTemplateAlreadyUsedError(string message) : base(message)
+        {
+        }
+    }
+}

src/Ocelot.Library/Infrastructure/Configuration/Yaml/IConfigurationValidator.cs

@@ -0,0 +1,9 @@
+using Ocelot.Library.Infrastructure.Responses;
+
+namespace Ocelot.Library.Infrastructure.Configuration.Yaml
+{
+    public interface IConfigurationValidator
+    {
+        Response<ConfigurationValidationResult> IsValid(YamlConfiguration configuration);
+    }
+}

src/Ocelot.Library/Infrastructure/Configuration/Yaml/YamlConfiguration.cs

@@ -0,0 +1,14 @@
+using System.Collections.Generic;
+
+namespace Ocelot.Library.Infrastructure.Configuration.Yaml
+{
+    public class YamlConfiguration
+    {
+        public YamlConfiguration()
+        {
+            ReRoutes = new List<YamlReRoute>();
+        }
+
+        public List<YamlReRoute> ReRoutes { get; set; }
+    }
+}

src/Ocelot.Library/Infrastructure/Configuration/Yaml/YamlReRoute.cs

@@ -0,0 +1,9 @@
+namespace Ocelot.Library.Infrastructure.Configuration.Yaml
+{
+    public class YamlReRoute
+    {
+        public string DownstreamTemplate { get; set; }
+        public string UpstreamTemplate { get; set; }
+        public string UpstreamHttpMethod { get; set; }
+    }
+}

src/Ocelot.Library/Infrastructure/DownstreamRouteFinder/DownstreamRouteFinder.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using Microsoft.Extensions.Options;
+using Ocelot.Library.Infrastructure.Configuration;
 using Ocelot.Library.Infrastructure.Responses;
 using Ocelot.Library.Infrastructure.UrlMatcher;
 
@@ -9,24 +10,29 @@ namespace Ocelot.Library.Infrastructure.DownstreamRouteFinder
 {
     public class DownstreamRouteFinder : IDownstreamRouteFinder
     {
-        private readonly IOptions<Configuration.Configuration> _configuration;
+        private readonly IOcelotConfiguration _configuration;
         private readonly IUrlPathToUrlTemplateMatcher _urlMatcher;
+        private readonly ITemplateVariableNameAndValueFinder _templateVariableNameAndValueFinder;
 
-        public DownstreamRouteFinder(IOptions<Configuration.Configuration> configuration, IUrlPathToUrlTemplateMatcher urlMatcher)
+        public DownstreamRouteFinder(IOcelotConfiguration configuration, IUrlPathToUrlTemplateMatcher urlMatcher, ITemplateVariableNameAndValueFinder templateVariableNameAndValueFinder)
         {
             _configuration = configuration;
             _urlMatcher = urlMatcher;
+            _templateVariableNameAndValueFinder = templateVariableNameAndValueFinder;
         }
 
         public Response<DownstreamRoute> FindDownstreamRoute(string upstreamUrlPath, string upstreamHttpMethod)
         {
-            foreach (var template in _configuration.Value.ReRoutes.Where(r => string.Equals(r.UpstreamHttpMethod, upstreamHttpMethod, StringComparison.CurrentCultureIgnoreCase)))
+            foreach (var template in _configuration.ReRoutes.Where(r => string.Equals(r.UpstreamHttpMethod, upstreamHttpMethod, StringComparison.CurrentCultureIgnoreCase)))
             {
-                var urlMatch = _urlMatcher.Match(upstreamUrlPath, template.UpstreamTemplate);
+                var urlMatch = _urlMatcher.Match(upstreamUrlPath, template.UpstreamTemplatePattern);
 
-                if (urlMatch.Match)
+                if (urlMatch.Data.Match)
                 {
-                    return new OkResponse<DownstreamRoute>(new DownstreamRoute(urlMatch.TemplateVariableNameAndValues, template.DownstreamTemplate));
+                    var templateVariableNameAndValues = _templateVariableNameAndValueFinder.Find(upstreamUrlPath,
+                        template.UpstreamTemplate);
+
+                    return new OkResponse<DownstreamRoute>(new DownstreamRoute(templateVariableNameAndValues.Data, template.DownstreamTemplate));
                 }
             }
         

src/Ocelot.Library/Infrastructure/RequestBuilder/HttpRequestBuilder.cs

@@ -5,12 +5,13 @@ using System.Net.Http;
 using System.Net.Http.Headers;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
+using Ocelot.Library.Infrastructure.Responses;
 
 namespace Ocelot.Library.Infrastructure.RequestBuilder
 {
     public class HttpRequestBuilder : IRequestBuilder
     {
-        public async Task<Request> Build(string httpMethod, string downstreamUrl, Stream content, IHeaderDictionary headers,
+        public async Task<Response<Request>> Build(string httpMethod, string downstreamUrl, Stream content, IHeaderDictionary headers,
             IRequestCookieCollection cookies, string queryString, string contentType)
         {
             var method = new HttpMethod(httpMethod);
@@ -65,8 +66,7 @@ namespace Ocelot.Library.Infrastructure.RequestBuilder
                 }
             }
             
-
-            return new Request(httpRequestMessage, cookieContainer);
+            return new OkResponse<Request>(new Request(httpRequestMessage, cookieContainer));
         }
     }
 }

src/Ocelot.Library/Infrastructure/RequestBuilder/IRequestBuilder.cs

@@ -1,12 +1,13 @@
 using System.IO;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
+using Ocelot.Library.Infrastructure.Responses;
 
 namespace Ocelot.Library.Infrastructure.RequestBuilder
 {
     public interface IRequestBuilder
     {
-        Task<Request> Build(string httpMethod,
+        Task<Response<Request>> Build(string httpMethod,
             string downstreamUrl,
             Stream content,
             IHeaderDictionary headers,

src/Ocelot.Library/Infrastructure/UrlMatcher/ITemplateVariableNameAndValueFinder.cs

@@ -0,0 +1,10 @@
+using System.Collections.Generic;
+using Ocelot.Library.Infrastructure.Responses;
+
+namespace Ocelot.Library.Infrastructure.UrlMatcher
+{
+    public interface ITemplateVariableNameAndValueFinder
+    {
+        Response<List<TemplateVariableNameAndValue>> Find(string upstreamUrlPath, string upstreamUrlPathTemplate);
+    }
+}

src/Ocelot.Library/Infrastructure/UrlMatcher/IUrlPathToUrlTemplateMatcher.cs

@@ -1,7 +1,9 @@
+using Ocelot.Library.Infrastructure.Responses;
+
 namespace Ocelot.Library.Infrastructure.UrlMatcher
 {
      public interface IUrlPathToUrlTemplateMatcher
      {
-        UrlMatch Match(string upstreamUrlPath, string upstreamUrlPathTemplate);
+        Response<UrlMatch> Match(string upstreamUrlPath, string upstreamUrlPathTemplate);
      }
 } 

src/Ocelot.Library/Infrastructure/UrlMatcher/RegExUrlMatcher.cs

@@ -0,0 +1,17 @@
+using System.Text.RegularExpressions;
+using Ocelot.Library.Infrastructure.Responses;
+
+namespace Ocelot.Library.Infrastructure.UrlMatcher
+{
+    public class RegExUrlMatcher : IUrlPathToUrlTemplateMatcher
+    {
+        public Response<UrlMatch> Match(string upstreamUrlPath, string upstreamUrlPathTemplate)
+        {
+            var regex = new Regex(upstreamUrlPathTemplate);
+
+            return regex.IsMatch(upstreamUrlPath) 
+                ? new OkResponse<UrlMatch>(new UrlMatch(true)) 
+                : new OkResponse<UrlMatch>(new UrlMatch(false));
+        }
+    }
+}

src/Ocelot.Library/Infrastructure/UrlMatcher/TemplateVariableNameAndValueFinder.cs

@@ -1,19 +1,12 @@
-using System;
 using System.Collections.Generic;
+using Ocelot.Library.Infrastructure.Responses;
 
 namespace Ocelot.Library.Infrastructure.UrlMatcher
 {
-     public class UrlPathToUrlTemplateMatcher : IUrlPathToUrlTemplateMatcher
+     public class TemplateVariableNameAndValueFinder : ITemplateVariableNameAndValueFinder
     {
-        public UrlMatch Match(string upstreamUrlPath, string upstreamUrlPathTemplate)
+        public Response<List<TemplateVariableNameAndValue>> Find(string upstreamUrlPath, string upstreamUrlPathTemplate)
         {
-            if (upstreamUrlPath.Length > upstreamUrlPathTemplate.Length)
-            {
-                return new UrlMatch(false, new List<TemplateVariableNameAndValue>(), string.Empty);
-            }
-
-            var urlPathTemplateCopy = upstreamUrlPathTemplate;
-
             var templateKeysAndValues = new List<TemplateVariableNameAndValue>();
 
             int counterForUrl = 0;
@@ -38,14 +31,13 @@ namespace Ocelot.Library.Infrastructure.UrlMatcher
 
                         continue;
                     }
-                    else
-                    {
-                        return new UrlMatch(false, templateKeysAndValues, string.Empty);
-                    } 
+
+                    return new OkResponse<List<TemplateVariableNameAndValue>>(templateKeysAndValues);
                 }
                 counterForUrl++;
             }
-            return new UrlMatch(true, templateKeysAndValues, urlPathTemplateCopy);
+
+            return new OkResponse<List<TemplateVariableNameAndValue>>(templateKeysAndValues);
         }
 
         private string GetPlaceholderVariableValue(string urlPath, int counterForUrl)

src/Ocelot.Library/Infrastructure/UrlMatcher/UrlMatch.cs

@@ -1,17 +1,11 @@
-using System.Collections.Generic;
-
 namespace Ocelot.Library.Infrastructure.UrlMatcher
 {
     public class UrlMatch
     {
-        public UrlMatch(bool match, List<TemplateVariableNameAndValue> templateVariableNameAndValues, string downstreamUrlTemplate)
+        public UrlMatch(bool match)
         {
             Match = match; 
-            TemplateVariableNameAndValues = templateVariableNameAndValues;
-            DownstreamUrlTemplate = downstreamUrlTemplate;
         }
         public bool Match {get;private set;}
-        public List<TemplateVariableNameAndValue> TemplateVariableNameAndValues {get;private set;}
-        public string DownstreamUrlTemplate {get;private set;}
     }
 }

src/Ocelot.Library/Infrastructure/UrlTemplateReplacer/DownstreamUrlTemplateVariableReplacer.cs

@@ -1,11 +1,12 @@
 using System.Text;
 using Ocelot.Library.Infrastructure.DownstreamRouteFinder;
+using Ocelot.Library.Infrastructure.Responses;
 
 namespace Ocelot.Library.Infrastructure.UrlTemplateReplacer
 {
     public class DownstreamUrlTemplateVariableReplacer : IDownstreamUrlTemplateVariableReplacer
     {
-        public string ReplaceTemplateVariables(DownstreamRoute downstreamRoute)
+        public Response<string> ReplaceTemplateVariables(DownstreamRoute downstreamRoute)
         {
             var upstreamUrl = new StringBuilder();
 
@@ -16,7 +17,7 @@ namespace Ocelot.Library.Infrastructure.UrlTemplateReplacer
                 upstreamUrl.Replace(templateVarAndValue.TemplateVariableName, templateVarAndValue.TemplateVariableValue);
             }
 
-            return upstreamUrl.ToString();
+            return new OkResponse<string>(upstreamUrl.ToString());
         }
     }
 }

src/Ocelot.Library/Infrastructure/UrlTemplateReplacer/IDownstreamUrlPathTemplateVariableReplacer.cs

@@ -1,10 +1,10 @@
 using Ocelot.Library.Infrastructure.DownstreamRouteFinder;
-using Ocelot.Library.Infrastructure.UrlMatcher;
+using Ocelot.Library.Infrastructure.Responses;
 
 namespace Ocelot.Library.Infrastructure.UrlTemplateReplacer
 {
     public interface IDownstreamUrlTemplateVariableReplacer
     {
-        string ReplaceTemplateVariables(DownstreamRoute downstreamRoute);   
+        Response<string> ReplaceTemplateVariables(DownstreamRoute downstreamRoute);   
     }
 }

src/Ocelot.Library/Middleware/DownstreamRouteFinderMiddleware.cs

@@ -2,25 +2,22 @@ using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
 using Ocelot.Library.Infrastructure.DownstreamRouteFinder;
 using Ocelot.Library.Infrastructure.Repository;
-using Ocelot.Library.Infrastructure.Responder;
 
 namespace Ocelot.Library.Middleware
 {
-    public class DownstreamRouteFinderMiddleware
+    public class DownstreamRouteFinderMiddleware : OcelotMiddleware
     {
         private readonly RequestDelegate _next;
         private readonly IDownstreamRouteFinder _downstreamRouteFinder;
-        private readonly IHttpResponder _responder;
         private readonly IScopedRequestDataRepository _scopedRequestDataRepository;
 
         public DownstreamRouteFinderMiddleware(RequestDelegate next, 
             IDownstreamRouteFinder downstreamRouteFinder, 
-            IHttpResponder responder,
             IScopedRequestDataRepository scopedRequestDataRepository)
+            :base(scopedRequestDataRepository)
         {
             _next = next;
             _downstreamRouteFinder = downstreamRouteFinder;
-            _responder = responder;
             _scopedRequestDataRepository = scopedRequestDataRepository;
         }
 
@@ -32,7 +29,7 @@ namespace Ocelot.Library.Middleware
 
             if (downstreamRoute.IsError)
             {
-                await _responder.CreateNotFoundResponse(context);
+                SetPipelineError(downstreamRoute.Errors);
                 return;
             }
 

src/Ocelot.Library/Middleware/DownstreamUrlCreatorMiddleware.cs

@@ -7,22 +7,20 @@ using Ocelot.Library.Infrastructure.UrlTemplateReplacer;
 
 namespace Ocelot.Library.Middleware
 {
-    public class DownstreamUrlCreatorMiddleware
+    public class DownstreamUrlCreatorMiddleware : OcelotMiddleware
     {
         private readonly RequestDelegate _next;
         private readonly IDownstreamUrlTemplateVariableReplacer _urlReplacer;
         private readonly IScopedRequestDataRepository _scopedRequestDataRepository;
-        private readonly IHttpResponder _responder;
 
         public DownstreamUrlCreatorMiddleware(RequestDelegate next, 
             IDownstreamUrlTemplateVariableReplacer urlReplacer,
-            IScopedRequestDataRepository scopedRequestDataRepository, 
-            IHttpResponder responder)
+            IScopedRequestDataRepository scopedRequestDataRepository)
+            :base(scopedRequestDataRepository)
         {
             _next = next;
             _urlReplacer = urlReplacer;
             _scopedRequestDataRepository = scopedRequestDataRepository;
-            _responder = responder;
         }
 
         public async Task Invoke(HttpContext context)
@@ -31,13 +29,19 @@ namespace Ocelot.Library.Middleware
 
             if (downstreamRoute.IsError)
             {
-                await _responder.CreateNotFoundResponse(context);
+                SetPipelineError(downstreamRoute.Errors);
                 return;
             }
 
             var downstreamUrl = _urlReplacer.ReplaceTemplateVariables(downstreamRoute.Data);
 
-            _scopedRequestDataRepository.Add("DownstreamUrl", downstreamUrl);
+            if (downstreamUrl.IsError)
+            {
+                SetPipelineError(downstreamUrl.Errors);
+                return;
+            }
+
+            _scopedRequestDataRepository.Add("DownstreamUrl", downstreamUrl.Data);
                 
             await _next.Invoke(context);
         }

src/Ocelot.Library/Middleware/HttpRequestBuilderMiddleware.cs

@@ -1,27 +1,22 @@
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
 using Ocelot.Library.Infrastructure.Repository;
-using Ocelot.Library.Infrastructure.Requester;
-using Ocelot.Library.Infrastructure.Responder;
+using Ocelot.Library.Infrastructure.RequestBuilder;
 
 namespace Ocelot.Library.Middleware
 {
-    using Infrastructure.RequestBuilder;
-
-    public class HttpRequestBuilderMiddleware
+    public class HttpRequestBuilderMiddleware : OcelotMiddleware
     {
         private readonly RequestDelegate _next;
-        private readonly IHttpResponder _responder;
         private readonly IScopedRequestDataRepository _scopedRequestDataRepository;
         private readonly IRequestBuilder _requestBuilder;
 
         public HttpRequestBuilderMiddleware(RequestDelegate next, 
-            IHttpResponder responder,
             IScopedRequestDataRepository scopedRequestDataRepository, 
             IRequestBuilder requestBuilder)
+            :base(scopedRequestDataRepository)
         {
             _next = next;
-            _responder = responder;
             _scopedRequestDataRepository = scopedRequestDataRepository;
             _requestBuilder = requestBuilder;
         }
@@ -32,7 +27,7 @@ namespace Ocelot.Library.Middleware
 
             if (downstreamUrl.IsError)
             {
-                await _responder.CreateNotFoundResponse(context);
+                SetPipelineError(downstreamUrl.Errors);
                 return;
             }
 
@@ -40,7 +35,13 @@ namespace Ocelot.Library.Middleware
               .Build(context.Request.Method, downstreamUrl.Data, context.Request.Body,
               context.Request.Headers, context.Request.Cookies, context.Request.QueryString.Value, context.Request.ContentType);
 
-            _scopedRequestDataRepository.Add("Request", request);
+            if (request.IsError)
+            {
+                SetPipelineError(request.Errors);
+                return;
+            }
+
+            _scopedRequestDataRepository.Add("Request", request.Data);
 
             await _next.Invoke(context);
         }

src/Ocelot.Library/Middleware/HttpRequesterMiddleware.cs

@@ -1,29 +1,24 @@
-using System.Net.Http;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
 using Ocelot.Library.Infrastructure.Repository;
+using Ocelot.Library.Infrastructure.RequestBuilder;
 using Ocelot.Library.Infrastructure.Requester;
-using Ocelot.Library.Infrastructure.Responder;
 
 namespace Ocelot.Library.Middleware
 {
-    using Infrastructure.RequestBuilder;
-
-    public class HttpRequesterMiddleware
+    public class HttpRequesterMiddleware : OcelotMiddleware
     {
         private readonly RequestDelegate _next;
         private readonly IHttpRequester _requester;
-        private readonly IHttpResponder _responder;
         private readonly IScopedRequestDataRepository _scopedRequestDataRepository;
 
         public HttpRequesterMiddleware(RequestDelegate next, 
             IHttpRequester requester, 
-            IHttpResponder responder,
             IScopedRequestDataRepository scopedRequestDataRepository)
+            :base(scopedRequestDataRepository)
         {
             _next = next;
             _requester = requester;
-            _responder = responder;
             _scopedRequestDataRepository = scopedRequestDataRepository;
         }
 
@@ -33,16 +28,19 @@ namespace Ocelot.Library.Middleware
 
             if (request.IsError)
             {
-                await _responder.CreateNotFoundResponse(context);
+                SetPipelineError(request.Errors);
                 return;
             }
 
-            var response = await _requester
-                .GetResponse(request.Data);
+            var response = await _requester.GetResponse(request.Data);
+
+            if (response.IsError)
+            {
+                SetPipelineError(response.Errors);
+                return;
+            }
 
             _scopedRequestDataRepository.Add("Response", response.Data);            
-            
-            await _next.Invoke(context);
         }
     }
 }

src/Ocelot.Library/Middleware/HttpResponderMiddleware.cs

@@ -6,10 +6,7 @@ using Ocelot.Library.Infrastructure.Responder;
 
 namespace Ocelot.Library.Middleware
 {
-    /// <summary>
-    /// Terminating middleware that is responsible for returning a http response to the client
-    /// </summary>
-    public class HttpResponderMiddleware
+    public class HttpResponderMiddleware : OcelotMiddleware
     {
         private readonly RequestDelegate _next;
         private readonly IHttpResponder _responder;
@@ -18,6 +15,7 @@ namespace Ocelot.Library.Middleware
         public HttpResponderMiddleware(RequestDelegate next, 
             IHttpResponder responder,
             IScopedRequestDataRepository scopedRequestDataRepository)
+            :base(scopedRequestDataRepository)
         {
             _next = next;
             _responder = responder;
@@ -25,10 +23,23 @@ namespace Ocelot.Library.Middleware
         }
 
         public async Task Invoke(HttpContext context)
+        {
+            await _next.Invoke(context);
+
+            if (PipelineError())
+            {
+                //todo obviously this needs to be better...prob look at response errors
+                // and make a decision i guess
+                var errors = GetPipelineErrors();
+
+                await _responder.CreateNotFoundResponse(context);
+            }
+            else
             {
                 var response = _scopedRequestDataRepository.Get<HttpResponseMessage>("Response");
 
                 await _responder.CreateResponse(context, response.Data);
             }
         }
+    }
 }

src/Ocelot.Library/Middleware/OcelotMiddleware.cs

@@ -0,0 +1,34 @@
+using System.Collections.Generic;
+using Ocelot.Library.Infrastructure.Repository;
+using Ocelot.Library.Infrastructure.Responses;
+
+namespace Ocelot.Library.Middleware
+{
+    public class OcelotMiddleware
+    {
+        private readonly IScopedRequestDataRepository _scopedRequestDataRepository;
+
+        public OcelotMiddleware(IScopedRequestDataRepository scopedRequestDataRepository)
+        {
+            _scopedRequestDataRepository = scopedRequestDataRepository;
+        }
+
+        public void SetPipelineError(List<Error> errors)
+        {
+            _scopedRequestDataRepository.Add("OcelotMiddlewareError", true);
+            _scopedRequestDataRepository.Add("OcelotMiddlewareErrors", errors);
+        }
+
+        public bool PipelineError()
+        {
+            var response = _scopedRequestDataRepository.Get<bool>("OcelotMiddlewareError");
+            return response.Data;
+        }
+
+        public List<Error> GetPipelineErrors()
+        {
+            var response = _scopedRequestDataRepository.Get<List<Error>>("OcelotMiddlewareErrors");
+            return response.Data;
+        }
+    }
+}

src/Ocelot.Library/project.json

@@ -17,6 +17,7 @@
         "Microsoft.Extensions.Logging.Debug": "1.0.0",
         "Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
         "Microsoft.AspNetCore.Http": "1.0.0",
+        "System.Text.RegularExpressions": "4.1.0",
         "YamlDotNet": "3.9.0"
     },
 

src/Ocelot/Startup.cs

@@ -1,10 +1,14 @@
-using Microsoft.AspNetCore.Builder;
+using System.Collections.Generic;
+using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Configuration.Memory;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
 using Ocelot.Library.Infrastructure.Configuration;
+using Ocelot.Library.Infrastructure.Configuration.Yaml;
 using Ocelot.Library.Infrastructure.DownstreamRouteFinder;
 using Ocelot.Library.Infrastructure.Repository;
 using Ocelot.Library.Infrastructure.RequestBuilder;
@@ -26,6 +30,7 @@ namespace Ocelot
                 .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
                 .AddYamlFile("configuration.yaml")
                 .AddEnvironmentVariables();
+
             Configuration = builder.Build();
         }
 
@@ -36,10 +41,12 @@ namespace Ocelot
         {
             services.AddOptions();
                         
-            services.Configure<Configuration>(Configuration);
+            services.Configure<YamlConfiguration>(Configuration);
 
             // Add framework services.
-            services.AddSingleton<IUrlPathToUrlTemplateMatcher, UrlPathToUrlTemplateMatcher>();
+            services.AddSingleton<IOcelotConfiguration, OcelotConfiguration>();
+            services.AddSingleton<IUrlPathToUrlTemplateMatcher, RegExUrlMatcher>();
+            services.AddSingleton<ITemplateVariableNameAndValueFinder, TemplateVariableNameAndValueFinder>();
             services.AddSingleton<IDownstreamUrlTemplateVariableReplacer, DownstreamUrlTemplateVariableReplacer>();
             services.AddSingleton<IDownstreamRouteFinder, DownstreamRouteFinder>();
             services.AddSingleton<IHttpRequester, HttpClientHttpRequester>();
@@ -58,6 +65,8 @@ namespace Ocelot
 
             loggerFactory.AddDebug();
 
+            app.UseHttpResponderMiddleware();
+
             app.UseDownstreamRouteFinderMiddleware();
 
             app.UserDownstreamUrlCreatorMiddleware();
@@ -65,8 +74,6 @@ namespace Ocelot
             app.UseHttpRequestBuilderMiddleware();
 
             app.UseHttpRequesterMiddleware();
-
-            app.UseHttpResponderMiddleware();
         }
     }
 }

test/Ocelot.AcceptanceTests/OcelotTests.cs

@@ -6,7 +6,7 @@ using System.Net.Http;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.TestHost;
 using Ocelot.AcceptanceTests.Fake;
-using Ocelot.Library.Infrastructure.Configuration;
+using Ocelot.Library.Infrastructure.Configuration.Yaml;
 using Shouldly;
 using TestStack.BDDfy;
 using Xunit;
@@ -32,7 +32,7 @@ namespace Ocelot.AcceptanceTests
         [Fact]
         public void should_return_response_404()
         {
-            this.Given(x => x.GivenThereIsAConfiguration(new Configuration()))
+            this.Given(x => x.GivenThereIsAConfiguration(new YamlConfiguration()))
                 .And(x => x.GivenTheApiGatewayIsRunning())
                 .When(x => x.WhenIGetUrlOnTheApiGateway("/"))
                 .Then(x => x.ThenTheStatusCodeShouldBe(HttpStatusCode.NotFound))
@@ -43,11 +43,11 @@ namespace Ocelot.AcceptanceTests
         public void should_return_response_200()
         {
             this.Given(x => x.GivenThereIsAServiceRunningOn("http://localhost:51879"))
-                .And(x => x.GivenThereIsAConfiguration(new Configuration
+                .And(x => x.GivenThereIsAConfiguration(new YamlConfiguration
                 {
-                    ReRoutes = new List<ReRoute>
+                    ReRoutes = new List<YamlReRoute>
                     {
-                        new ReRoute
+                        new YamlReRoute
                         {
                             DownstreamTemplate = "http://localhost:51879/",
                             UpstreamTemplate = "/",
@@ -66,11 +66,11 @@ namespace Ocelot.AcceptanceTests
         public void should_return_response_201()
         {
             this.Given(x => x.GivenThereIsAServiceRunningOn("http://localhost:51879"))
-                .And(x => x.GivenThereIsAConfiguration(new Configuration
+                .And(x => x.GivenThereIsAConfiguration(new YamlConfiguration
                 {
-                    ReRoutes = new List<ReRoute>
+                    ReRoutes = new List<YamlReRoute>
                     {
-                        new ReRoute
+                        new YamlReRoute
                         {
                             DownstreamTemplate = "http://localhost:51879/",
                             UpstreamTemplate = "/",
@@ -100,7 +100,7 @@ namespace Ocelot.AcceptanceTests
             _client = _server.CreateClient();
         }
 
-        private void GivenThereIsAConfiguration(Configuration configuration)
+        private void GivenThereIsAConfiguration(YamlConfiguration yamlConfiguration)
         {
             var serializer = new Serializer();
 
@@ -111,7 +111,7 @@ namespace Ocelot.AcceptanceTests
 
             using (TextWriter writer = File.CreateText(_configurationPath))
             {
-                serializer.Serialize(writer, configuration);
+                serializer.Serialize(writer, yamlConfiguration);
             }
         }
 

test/Ocelot.UnitTests/Configuration/ConfigurationValidationTests.cs

@@ -1,5 +1,5 @@
 using System.Collections.Generic;
-using Ocelot.Library.Infrastructure.Configuration;
+using Ocelot.Library.Infrastructure.Configuration.Yaml;
 using Ocelot.Library.Infrastructure.Responses;
 using Shouldly;
 using TestStack.BDDfy;
@@ -9,7 +9,7 @@ namespace Ocelot.UnitTests.Configuration
 {
     public class ConfigurationValidationTests
     {
-        private Library.Infrastructure.Configuration.Configuration _configuration;
+        private YamlConfiguration _yamlConfiguration;
         private readonly IConfigurationValidator _configurationValidator;
         private Response<ConfigurationValidationResult> _result;
 
@@ -21,11 +21,11 @@ namespace Ocelot.UnitTests.Configuration
         [Fact]
         public void configuration_is_valid_with_one_reroute()
         {
-            this.Given(x => x.GivenAConfiguration(new Library.Infrastructure.Configuration.Configuration()
+            this.Given(x => x.GivenAConfiguration(new YamlConfiguration()
             {
-                ReRoutes = new List<ReRoute>
+                ReRoutes = new List<YamlReRoute>
                 {
-                    new ReRoute
+                    new YamlReRoute
                     {
                         DownstreamTemplate = "http://www.bbc.co.uk",
                         UpstreamTemplate = "http://asdf.com"
@@ -40,16 +40,16 @@ namespace Ocelot.UnitTests.Configuration
         [Fact]
         public void configuration_is_not_valid_with_duplicate_reroutes()
         {
-            this.Given(x => x.GivenAConfiguration(new Library.Infrastructure.Configuration.Configuration()
+            this.Given(x => x.GivenAConfiguration(new YamlConfiguration()
             {
-                ReRoutes = new List<ReRoute>
+                ReRoutes = new List<YamlReRoute>
                 {
-                    new ReRoute
+                    new YamlReRoute
                     {
                         DownstreamTemplate = "http://www.bbc.co.uk",
                         UpstreamTemplate = "http://asdf.com"
                     },
-                    new ReRoute
+                    new YamlReRoute
                     {
                         DownstreamTemplate = "http://www.bbc.co.uk",
                         UpstreamTemplate = "http://lol.com"
@@ -62,14 +62,14 @@ namespace Ocelot.UnitTests.Configuration
                 .BDDfy();
         }
 
-        private void GivenAConfiguration(Library.Infrastructure.Configuration.Configuration configuration)
+        private void GivenAConfiguration(YamlConfiguration yamlConfiguration)
         {
-            _configuration = configuration;
+            _yamlConfiguration = yamlConfiguration;
         }
 
         private void WhenIValidateTheConfiguration()
         {
-            _result = _configurationValidator.IsValid(_configuration);
+            _result = _configurationValidator.IsValid(_yamlConfiguration);
         }
 
         private void ThenTheResultIsValid()

test/Ocelot.UnitTests/Configuration/OcelotConfigurationTests.cs

@@ -0,0 +1,142 @@
+using System.Collections.Generic;
+using Microsoft.Extensions.Options;
+using Moq;
+using Ocelot.Library.Infrastructure.Configuration;
+using Ocelot.Library.Infrastructure.Configuration.Yaml;
+using Shouldly;
+using TestStack.BDDfy;
+using Xunit;
+
+namespace Ocelot.UnitTests.Configuration
+{
+    public class OcelotConfigurationTests
+    {
+        private readonly Mock<IOptions<YamlConfiguration>> _yamlConfig;
+        private OcelotConfiguration _config;
+        private YamlConfiguration _yamlConfiguration;
+
+        public OcelotConfigurationTests()
+        {
+            _yamlConfig = new Mock<IOptions<YamlConfiguration>>();
+        }
+
+        [Fact]
+        public void should_create_template_pattern_that_matches_anything_to_end_of_string()
+        {
+            this.Given(x => x.GivenTheYamlConfigIs(new YamlConfiguration
+            {
+                ReRoutes = new List<YamlReRoute>
+                {
+                    new YamlReRoute
+                    {
+                        UpstreamTemplate = "/api/products/{productId}",
+                        DownstreamTemplate = "/products/{productId}",
+                        UpstreamHttpMethod = "Get"
+                    }
+                }
+            }))
+                .When(x => x.WhenIInstanciateTheOcelotConfig())
+                .Then(x => x.ThenTheReRoutesAre(new List<ReRoute>
+                {
+                    new ReRoute("/products/{productId}","/api/products/{productId}", "Get", "/api/products/.*$")
+                }))
+                .BDDfy();
+        }
+
+        [Fact]
+        public void should_create_template_pattern_that_matches_more_than_one_placeholder()
+        {
+            this.Given(x => x.GivenTheYamlConfigIs(new YamlConfiguration
+            {
+                ReRoutes = new List<YamlReRoute>
+                {
+                    new YamlReRoute
+                    {
+                        UpstreamTemplate = "/api/products/{productId}/variants/{variantId}",
+                        DownstreamTemplate = "/products/{productId}",
+                        UpstreamHttpMethod = "Get"
+                    }
+                }
+            }))
+                .When(x => x.WhenIInstanciateTheOcelotConfig())
+                .Then(x => x.ThenTheReRoutesAre(new List<ReRoute>
+                {
+                    new ReRoute("/products/{productId}","/api/products/{productId}/variants/{variantId}", "Get", "/api/products/.*/variants/.*$")
+                }))
+                .BDDfy();
+        }
+
+        [Fact]
+        public void should_create_template_pattern_that_matches_more_than_one_placeholder_with_trailing_slash()
+        {
+            this.Given(x => x.GivenTheYamlConfigIs(new YamlConfiguration
+            {
+                ReRoutes = new List<YamlReRoute>
+                {
+                    new YamlReRoute
+                    {
+                        UpstreamTemplate = "/api/products/{productId}/variants/{variantId}/",
+                        DownstreamTemplate = "/products/{productId}",
+                        UpstreamHttpMethod = "Get"
+                    }
+                }
+            }))
+                .When(x => x.WhenIInstanciateTheOcelotConfig())
+                .Then(x => x.ThenTheReRoutesAre(new List<ReRoute>
+                {
+                    new ReRoute("/products/{productId}","/api/products/{productId}/variants/{variantId}/", "Get", "/api/products/.*/variants/.*/$")
+                }))
+                .BDDfy();
+        }
+
+        [Fact]
+        public void should_create_template_pattern_that_matches_to_end_of_string()
+        {
+            this.Given(x => x.GivenTheYamlConfigIs(new YamlConfiguration
+            {
+                ReRoutes = new List<YamlReRoute>
+                {
+                    new YamlReRoute
+                    {
+                        UpstreamTemplate = "/",
+                        DownstreamTemplate = "/api/products/",
+                        UpstreamHttpMethod = "Get"
+                    }
+                }
+            }))
+                .When(x => x.WhenIInstanciateTheOcelotConfig())
+                .Then(x => x.ThenTheReRoutesAre(new List<ReRoute>
+                {
+                    new ReRoute("/api/products/","/", "Get", "/$")
+                }))
+                .BDDfy();
+        }
+
+        private void GivenTheYamlConfigIs(YamlConfiguration yamlConfiguration)
+        {
+            _yamlConfiguration = yamlConfiguration;
+            _yamlConfig
+                .Setup(x => x.Value)
+                .Returns(_yamlConfiguration);
+        }
+
+        private void WhenIInstanciateTheOcelotConfig()
+        {
+            _config = new OcelotConfiguration(_yamlConfig.Object);
+        }
+
+        private void ThenTheReRoutesAre(List<ReRoute> expectedReRoutes)
+        {
+            for (int i = 0; i < _config.ReRoutes.Count; i++)
+            {
+                var result = _config.ReRoutes[i];
+                var expected = expectedReRoutes[i];
+
+                result.DownstreamTemplate.ShouldBe(expected.DownstreamTemplate);
+                result.UpstreamHttpMethod.ShouldBe(expected.UpstreamHttpMethod);
+                result.UpstreamTemplate.ShouldBe(expected.UpstreamTemplate);
+                result.UpstreamTemplatePattern.ShouldBe(expected.UpstreamTemplatePattern);
+            }
+        }
+    }
+}

test/Ocelot.UnitTests/DownstreamRouteFinder/DownstreamRouteFinderTests.cs

@@ -1,5 +1,4 @@
 using System.Collections.Generic;
-using Microsoft.Extensions.Options;
 using Moq;
 using Ocelot.Library.Infrastructure.Configuration;
 using Ocelot.Library.Infrastructure.DownstreamRouteFinder;
@@ -14,38 +13,35 @@ namespace Ocelot.UnitTests.DownstreamRouteFinder
     public class DownstreamRouteFinderTests
     {
         private readonly IDownstreamRouteFinder _downstreamRouteFinder;
-        private readonly Mock<IOptions<Library.Infrastructure.Configuration.Configuration>> _mockConfig;
+        private readonly Mock<IOcelotConfiguration> _mockConfig;
         private readonly Mock<IUrlPathToUrlTemplateMatcher> _mockMatcher;
+        private readonly Mock<ITemplateVariableNameAndValueFinder> _finder;
         private string _upstreamUrlPath;
         private Response<DownstreamRoute> _result;
         private Response<DownstreamRoute> _response;
-        private Library.Infrastructure.Configuration.Configuration _configuration;
-        private UrlMatch _match;
+        private List<ReRoute> _reRoutesConfig;
+        private Response<UrlMatch> _match;
         private string _upstreamHttpMethod;
 
         public DownstreamRouteFinderTests()
         {
-            _mockConfig = new Mock<IOptions<Library.Infrastructure.Configuration.Configuration>>();
+            _mockConfig = new Mock<IOcelotConfiguration>();
             _mockMatcher = new Mock<IUrlPathToUrlTemplateMatcher>();
-            _downstreamRouteFinder = new Library.Infrastructure.DownstreamRouteFinder.DownstreamRouteFinder(_mockConfig.Object, _mockMatcher.Object);
+            _finder = new Mock<ITemplateVariableNameAndValueFinder>();
+            _downstreamRouteFinder = new Library.Infrastructure.DownstreamRouteFinder.DownstreamRouteFinder(_mockConfig.Object, _mockMatcher.Object, _finder.Object);
         }
 
         [Fact]
         public void should_return_route()
         {
             this.Given(x => x.GivenThereIsAnUpstreamUrlPath("someUpstreamPath"))
-                .And(x => x.GivenTheConfigurationIs(new Library.Infrastructure.Configuration.Configuration {
-                    ReRoutes = new List<ReRoute>
+                .And(x => x.GivenTheTemplateVariableAndNameFinderReturns(new OkResponse<List<TemplateVariableNameAndValue>>(new List<TemplateVariableNameAndValue>())))
+                .And(x => x.GivenTheConfigurationIs(new List<ReRoute>
                     {
-                        new ReRoute()
-                        {
-                            UpstreamTemplate = "someUpstreamPath",
-                            DownstreamTemplate = "someDownstreamPath",
-                            UpstreamHttpMethod = "Get"
+                        new ReRoute("someDownstreamPath","someUpstreamPath", "Get", "someUpstreamPath")
                     }
-                    }
-                }))
-                .And(x => x.GivenTheUrlMatcherReturns(new UrlMatch(true, new List<TemplateVariableNameAndValue>(), "someDownstreamPath")))
+                ))
+                .And(x => x.GivenTheUrlMatcherReturns(new OkResponse<UrlMatch>(new UrlMatch(true))))
                 .And(x => x.GivenTheUpstreamHttpMethodIs("Get"))
                 .When(x => x.WhenICallTheFinder())
                 .Then(
@@ -58,25 +54,14 @@ namespace Ocelot.UnitTests.DownstreamRouteFinder
         public void should_return_correct_route_for_http_verb()
         {
             this.Given(x => x.GivenThereIsAnUpstreamUrlPath("someUpstreamPath"))
-                .And(x => x.GivenTheConfigurationIs(new Library.Infrastructure.Configuration.Configuration
+                .And(x => x.GivenTheTemplateVariableAndNameFinderReturns(new OkResponse<List<TemplateVariableNameAndValue>>(new List<TemplateVariableNameAndValue>())))
+                .And(x => x.GivenTheConfigurationIs(new List<ReRoute>
                     {
-                    ReRoutes = new List<ReRoute>
-                    {
-                        new ReRoute()
-                        {
-                            UpstreamTemplate = "someUpstreamPath",
-                            DownstreamTemplate = "someDownstreamPath",
-                            UpstreamHttpMethod = "Get"
-                        },
-                         new ReRoute()
-                        {
-                            UpstreamTemplate = "someUpstreamPath",
-                            DownstreamTemplate = "someDownstreamPathForAPost",
-                            UpstreamHttpMethod = "Post"
+                        new ReRoute("someDownstreamPath", "someUpstreamPath", "Get", string.Empty),
+                        new ReRoute("someDownstreamPathForAPost", "someUpstreamPath", "Post", string.Empty)
                     }
-                    }
-                }))
-                .And(x => x.GivenTheUrlMatcherReturns(new UrlMatch(true, new List<TemplateVariableNameAndValue>(), "someDownstreamPathForAPost")))
+                ))
+                .And(x => x.GivenTheUrlMatcherReturns(new OkResponse<UrlMatch>(new UrlMatch(true))))
                 .And(x => x.GivenTheUpstreamHttpMethodIs("Post"))
                 .When(x => x.WhenICallTheFinder())
                 .Then(
@@ -88,19 +73,12 @@ namespace Ocelot.UnitTests.DownstreamRouteFinder
         public void should_not_return_route()
         {
             this.Given(x => x.GivenThereIsAnUpstreamUrlPath("somePath"))
-                 .And(x => x.GivenTheConfigurationIs(new Library.Infrastructure.Configuration.Configuration
+                 .And(x => x.GivenTheConfigurationIs(new List<ReRoute>
                      {
-                     ReRoutes = new List<ReRoute>
-                     {
-                        new ReRoute()
-                        {
-                            UpstreamTemplate = "somePath",
-                            DownstreamTemplate = "somPath",
-                            UpstreamHttpMethod = "Get"
+                        new ReRoute("somPath", "somePath", "Get", "somePath")
                      }
-                     }
-                 }))
-                 .And(x => x.GivenTheUrlMatcherReturns(new UrlMatch(false, new List<TemplateVariableNameAndValue>(), null)))
+                 ))
+                 .And(x => x.GivenTheUrlMatcherReturns(new OkResponse<UrlMatch>(new UrlMatch(false))))
                  .And(x => x.GivenTheUpstreamHttpMethodIs("Get"))
                  .When(x => x.WhenICallTheFinder())
                  .Then(
@@ -109,6 +87,13 @@ namespace Ocelot.UnitTests.DownstreamRouteFinder
                  .BDDfy();
         }
 
+        private void GivenTheTemplateVariableAndNameFinderReturns(Response<List<TemplateVariableNameAndValue>> response)
+        {
+            _finder
+                .Setup(x => x.Find(It.IsAny<string>(), It.IsAny<string>()))
+                .Returns(response);
+        }
+
         private void GivenTheUpstreamHttpMethodIs(string upstreamHttpMethod)
         {
             _upstreamHttpMethod = upstreamHttpMethod;
@@ -122,10 +107,10 @@ namespace Ocelot.UnitTests.DownstreamRouteFinder
         private void ThenTheUrlMatcherIsCalledCorrectly()
         {
             _mockMatcher
-                .Verify(x => x.Match(_upstreamUrlPath, _configuration.ReRoutes[0].UpstreamTemplate), Times.Once);
+                .Verify(x => x.Match(_upstreamUrlPath, _reRoutesConfig[0].UpstreamTemplate), Times.Once);
         }
 
-        private void GivenTheUrlMatcherReturns(UrlMatch match)
+        private void GivenTheUrlMatcherReturns(Response<UrlMatch> match)
         {
             _match = match;
             _mockMatcher
@@ -133,12 +118,12 @@ namespace Ocelot.UnitTests.DownstreamRouteFinder
                 .Returns(_match);
         }
 
-        private void GivenTheConfigurationIs(Library.Infrastructure.Configuration.Configuration configuration)
+        private void GivenTheConfigurationIs(List<ReRoute> reRoutesConfig)
         {
-            _configuration = configuration;
+            _reRoutesConfig = reRoutesConfig;
             _mockConfig
-                .Setup(x => x.Value)
-                .Returns(_configuration);
+                .Setup(x => x.ReRoutes)
+                .Returns(_reRoutesConfig);
         }
 
         private void GivenThereIsAnUpstreamUrlPath(string upstreamUrlPath)

test/Ocelot.UnitTests/RequestBuilder/RequestBuilderTests.cs

@@ -6,6 +6,7 @@ using System.Net.Http;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Http.Internal;
 using Ocelot.Library.Infrastructure.RequestBuilder;
+using Ocelot.Library.Infrastructure.Responses;
 using Shouldly;
 using TestStack.BDDfy;
 using Xunit;
@@ -22,7 +23,7 @@ namespace Ocelot.UnitTests.RequestBuilder
         private string _query;
         private string _contentType;
         private readonly IRequestBuilder _requestBuilder;
-        private Request _result;
+        private Response<Request> _result;
 
         public RequestBuilderTests()
         {
@@ -131,7 +132,7 @@ namespace Ocelot.UnitTests.RequestBuilder
 
         private void ThenTheCorrectQueryStringIsUsed(string expected)
         {
-            _result.HttpRequestMessage.RequestUri.Query.ShouldBe(expected);
+            _result.Data.HttpRequestMessage.RequestUri.Query.ShouldBe(expected);
         }
 
         private void GivenTheQueryStringIs(string query)
@@ -141,7 +142,7 @@ namespace Ocelot.UnitTests.RequestBuilder
 
         private void ThenTheCorrectCookiesAreUsed(IRequestCookieCollection expected)
         {
-            var resultCookies = _result.CookieContainer.GetCookies(new Uri(_downstreamUrl + _query));
+            var resultCookies = _result.Data.CookieContainer.GetCookies(new Uri(_downstreamUrl + _query));
             var resultDictionary = resultCookies.Cast<Cookie>().ToDictionary(cook => cook.Name, cook => cook.Value);
 
             foreach (var expectedCookie in expected)
@@ -162,7 +163,7 @@ namespace Ocelot.UnitTests.RequestBuilder
 
             foreach (var expectedHeader in expectedHeaders)
             {
-                _result.HttpRequestMessage.Headers.ShouldContain(x => x.Key == expectedHeader.Key && x.Value.First() == expectedHeader.Value[0]);
+                _result.Data.HttpRequestMessage.Headers.ShouldContain(x => x.Key == expectedHeader.Key && x.Value.First() == expectedHeader.Value[0]);
             }
         }
 
@@ -172,7 +173,7 @@ namespace Ocelot.UnitTests.RequestBuilder
 
             foreach (var expectedHeader in expectedHeaders)
             {
-                _result.HttpRequestMessage.Content.Headers.ShouldContain(x => x.Key == expectedHeader.Key 
+                _result.Data.HttpRequestMessage.Content.Headers.ShouldContain(x => x.Key == expectedHeader.Key 
                 && x.Value.First() == expectedHeader.Value[0]
                 );
             }
@@ -207,17 +208,17 @@ namespace Ocelot.UnitTests.RequestBuilder
 
         private void ThenTheCorrectDownstreamUrlIsUsed(string expected)
         {
-            _result.HttpRequestMessage.RequestUri.AbsoluteUri.ShouldBe(expected);
+            _result.Data.HttpRequestMessage.RequestUri.AbsoluteUri.ShouldBe(expected);
         }
 
         private void ThenTheCorrectHttpMethodIsUsed(HttpMethod expected)
         {
-            _result.HttpRequestMessage.Method.Method.ShouldBe(expected.Method);
+            _result.Data.HttpRequestMessage.Method.Method.ShouldBe(expected.Method);
         }
 
         private void ThenTheCorrectContentIsUsed(HttpContent expected)
         {
-            _result.HttpRequestMessage.Content.ReadAsStringAsync().Result.ShouldBe(expected.ReadAsStringAsync().Result);
+            _result.Data.HttpRequestMessage.Content.ReadAsStringAsync().Result.ShouldBe(expected.ReadAsStringAsync().Result);
         }
     }
 }

test/Ocelot.UnitTests/UrlMatcher/RegExUrlMatcherTests.cs

@@ -0,0 +1,156 @@
+using Ocelot.Library.Infrastructure.Responses;
+using Ocelot.Library.Infrastructure.UrlMatcher;
+using Shouldly;
+using TestStack.BDDfy;
+using Xunit;
+
+namespace Ocelot.UnitTests.UrlMatcher
+{
+    public class RegExUrlMatcherTests
+    {
+        private readonly IUrlPathToUrlTemplateMatcher _urlMatcher;
+        private string _downstreamUrlPath;
+        private string _downstreamPathTemplate;
+        private Response<UrlMatch> _result;
+
+        public RegExUrlMatcherTests()
+        {
+            _urlMatcher = new RegExUrlMatcher();
+        }
+
+        [Fact]
+        public void should_find_match_when_template_smaller_than_valid_path()
+        {
+            this.Given(x => x.GivenIHaveAUpstreamPath("/api/products/2354325435624623464235"))
+                .And(x => x.GivenIHaveAnUpstreamUrlTemplatePattern("/api/products/.*$"))
+                .When(x => x.WhenIMatchThePaths())
+                .And(x => x.ThenTheResultIsTrue())
+                .BDDfy();
+        }
+
+        [Fact]
+        public void should_not_find_match()
+        {
+            this.Given(x => x.GivenIHaveAUpstreamPath("/api/values"))
+                .And(x => x.GivenIHaveAnUpstreamUrlTemplatePattern("/$"))
+                .When(x => x.WhenIMatchThePaths())
+                .And(x => x.ThenTheResultIsFalse())
+                .BDDfy();
+        }
+
+        [Fact]
+        public void can_match_down_stream_url()
+        {
+            this.Given(x => x.GivenIHaveAUpstreamPath(""))
+                .And(x => x.GivenIHaveAnUpstreamUrlTemplatePattern("$"))
+                .When(x => x.WhenIMatchThePaths())
+                .And(x => x.ThenTheResultIsTrue())
+                .BDDfy();
+        }
+
+        [Fact]
+        public void can_match_down_stream_url_with_no_slash()
+        {
+            this.Given(x => x.GivenIHaveAUpstreamPath("api"))
+                 .Given(x => x.GivenIHaveAnUpstreamUrlTemplatePattern("api$"))
+                 .When(x => x.WhenIMatchThePaths())
+                 .Then(x => x.ThenTheResultIsTrue())
+                 .BDDfy();
+        }
+
+        [Fact]
+        public void can_match_down_stream_url_with_one_slash()
+        {
+            this.Given(x => x.GivenIHaveAUpstreamPath("api/"))
+                 .Given(x => x.GivenIHaveAnUpstreamUrlTemplatePattern("api/$"))
+                 .When(x => x.WhenIMatchThePaths())
+                 .Then(x => x.ThenTheResultIsTrue())
+                 .BDDfy();
+        }
+
+        [Fact]
+        public void can_match_down_stream_url_with_downstream_template()
+        {
+            this.Given(x => x.GivenIHaveAUpstreamPath("api/product/products/"))
+              .Given(x => x.GivenIHaveAnUpstreamUrlTemplatePattern("api/product/products/$"))
+              .When(x => x.WhenIMatchThePaths())
+              .Then(x => x.ThenTheResultIsTrue())
+              .BDDfy();
+        }
+
+        [Fact]
+        public void can_match_down_stream_url_with_downstream_template_with_one_place_holder()
+        {
+            this.Given(x => x.GivenIHaveAUpstreamPath("api/product/products/1"))
+               .Given(x => x.GivenIHaveAnUpstreamUrlTemplatePattern("api/product/products/.*$"))
+               .When(x => x.WhenIMatchThePaths())
+               .Then(x => x.ThenTheResultIsTrue())
+               .BDDfy();
+        }
+
+        [Fact]
+        public void can_match_down_stream_url_with_downstream_template_with_two_place_holders()
+        {
+            this.Given(x => x.GivenIHaveAUpstreamPath("api/product/products/1/2"))
+                 .Given(x => x.GivenIHaveAnUpstreamUrlTemplatePattern("api/product/products/.*/.*$"))
+                 .When(x => x.WhenIMatchThePaths())
+                 .Then(x => x.ThenTheResultIsTrue())
+                 .BDDfy();
+        }
+
+        [Fact]
+        public void can_match_down_stream_url_with_downstream_template_with_two_place_holders_seperated_by_something()
+        {
+            this.Given(x => x.GivenIHaveAUpstreamPath("api/product/products/1/categories/2"))
+                .And(x => x.GivenIHaveAnUpstreamUrlTemplatePattern("api/product/products/.*/categories/.*$"))
+                .When(x => x.WhenIMatchThePaths())
+                .Then(x => x.ThenTheResultIsTrue())
+                .BDDfy();
+        }
+
+        [Fact]
+        public void can_match_down_stream_url_with_downstream_template_with_three_place_holders_seperated_by_something()
+        {
+            this.Given(x => x.GivenIHaveAUpstreamPath("api/product/products/1/categories/2/variant/123"))
+                .And(x => x.GivenIHaveAnUpstreamUrlTemplatePattern("api/product/products/.*/categories/.*/variant/.*$"))
+                .When(x => x.WhenIMatchThePaths())
+                .Then(x => x.ThenTheResultIsTrue())
+                .BDDfy();
+        }
+
+        [Fact]
+        public void can_match_down_stream_url_with_downstream_template_with_three_place_holders()
+        {
+            this.Given(x => x.GivenIHaveAUpstreamPath("api/product/products/1/categories/2/variant/"))
+                 .And(x => x.GivenIHaveAnUpstreamUrlTemplatePattern("api/product/products/.*/categories/.*/variant/$"))
+                 .When(x => x.WhenIMatchThePaths())
+                 .Then(x => x.ThenTheResultIsTrue())
+                 .BDDfy();
+        }
+
+        private void GivenIHaveAUpstreamPath(string downstreamPath)
+        {
+            _downstreamUrlPath = downstreamPath;
+        }
+
+        private void GivenIHaveAnUpstreamUrlTemplatePattern(string downstreamUrlTemplate)
+        {
+            _downstreamPathTemplate = downstreamUrlTemplate;
+        }
+
+        private void WhenIMatchThePaths()
+        {
+            _result = _urlMatcher.Match(_downstreamUrlPath, _downstreamPathTemplate);
+        }
+
+        private void ThenTheResultIsTrue()
+        {
+            _result.Data.Match.ShouldBeTrue();
+        }
+
+        private void ThenTheResultIsFalse()
+        {
+            _result.Data.Match.ShouldBeFalse();
+        }
+    }
+} 

test/Ocelot.UnitTests/UrlMatcher/TemplateVariableNameAndValueFinderTests.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using System.Linq;
+using Ocelot.Library.Infrastructure.Responses;
 using Ocelot.Library.Infrastructure.UrlMatcher;
 using Shouldly;
 using TestStack.BDDfy;
@@ -9,33 +10,14 @@ namespace Ocelot.UnitTests.UrlMatcher
 {
     public class UrlPathToUrlTemplateMatcherTests 
     {
-        private readonly IUrlPathToUrlTemplateMatcher _urlMatcher;
+        private readonly ITemplateVariableNameAndValueFinder _finder;
         private string _downstreamUrlPath;
         private string _downstreamPathTemplate;
-        private UrlMatch _result;
+        private Response<List<TemplateVariableNameAndValue>> _result;
+
         public UrlPathToUrlTemplateMatcherTests()
         {
-            _urlMatcher = new UrlPathToUrlTemplateMatcher();
-        }
-
-        [Fact]
-        public void should_find_match_when_template_smaller_than_valid_path()
-        {
-            this.Given(x => x.GivenIHaveAUpstreamPath("/api/products/2354325435624623464235"))
-                .And(x => x.GivenIHaveAnUpstreamUrlTemplate("/api/products/{productId}"))
-                .When(x => x.WhenIMatchThePaths())
-                .And(x => x.ThenTheResultIsTrue())
-                .BDDfy();
-        }
-
-        [Fact]
-        public void should_not_find_match()
-        {
-            this.Given(x => x.GivenIHaveAUpstreamPath("/api/values"))
-                .And(x => x.GivenIHaveAnUpstreamUrlTemplate("/"))
-                .When(x => x.WhenIMatchThePaths())
-                .And(x => x.ThenTheResultIsFalse())
-                .BDDfy();
+            _finder = new TemplateVariableNameAndValueFinder();
         }
 
         [Fact]
@@ -43,10 +25,8 @@ namespace Ocelot.UnitTests.UrlMatcher
         {
             this.Given(x => x.GivenIHaveAUpstreamPath(""))
                 .And(x => x.GivenIHaveAnUpstreamUrlTemplate(""))
-                .When(x => x.WhenIMatchThePaths())
-                .And(x => x.ThenTheResultIsTrue())
+                .When(x => x.WhenIFindTheUrlVariableNamesAndValues())
                 .And(x => x.ThenTheTemplatesVariablesAre(new List<TemplateVariableNameAndValue>()))
-                .And(x => x.ThenTheDownstreamUrlTemplateIs(""))
                 .BDDfy();
         }
 
@@ -55,10 +35,8 @@ namespace Ocelot.UnitTests.UrlMatcher
         {
             this.Given(x => x.GivenIHaveAUpstreamPath("api"))
                  .Given(x => x.GivenIHaveAnUpstreamUrlTemplate("api"))
-                 .When(x => x.WhenIMatchThePaths())
-                 .Then(x => x.ThenTheResultIsTrue())
+                 .When(x => x.WhenIFindTheUrlVariableNamesAndValues())
                  .And(x => x.ThenTheTemplatesVariablesAre(new List<TemplateVariableNameAndValue>()))
-                 .And(x => x.ThenTheDownstreamUrlTemplateIs("api"))
                  .BDDfy();
         }
 
@@ -67,10 +45,8 @@ namespace Ocelot.UnitTests.UrlMatcher
         {
             this.Given(x => x.GivenIHaveAUpstreamPath("api/"))
                  .Given(x => x.GivenIHaveAnUpstreamUrlTemplate("api/"))
-                 .When(x => x.WhenIMatchThePaths())
-                 .Then(x => x.ThenTheResultIsTrue())
+                 .When(x => x.WhenIFindTheUrlVariableNamesAndValues())
                  .And(x => x.ThenTheTemplatesVariablesAre(new List<TemplateVariableNameAndValue>()))
-                 .And(x => x.ThenTheDownstreamUrlTemplateIs("api/"))
                  .BDDfy();
         }
 
@@ -79,10 +55,8 @@ namespace Ocelot.UnitTests.UrlMatcher
         {
             this.Given(x => x.GivenIHaveAUpstreamPath("api/product/products/"))
               .Given(x => x.GivenIHaveAnUpstreamUrlTemplate("api/product/products/"))
-              .When(x => x.WhenIMatchThePaths())
-              .Then(x => x.ThenTheResultIsTrue())
+              .When(x => x.WhenIFindTheUrlVariableNamesAndValues())
               .And(x => x.ThenTheTemplatesVariablesAre(new List<TemplateVariableNameAndValue>()))
-              .And(x => x.ThenTheDownstreamUrlTemplateIs("api/product/products/"))
               .BDDfy();
         }
 
@@ -96,10 +70,8 @@ namespace Ocelot.UnitTests.UrlMatcher
 
             this.Given(x => x.GivenIHaveAUpstreamPath("api/product/products/1"))
                .Given(x => x.GivenIHaveAnUpstreamUrlTemplate("api/product/products/{productId}"))
-               .When(x => x.WhenIMatchThePaths())
-               .Then(x => x.ThenTheResultIsTrue())
+               .When(x => x.WhenIFindTheUrlVariableNamesAndValues())
                .And(x => x.ThenTheTemplatesVariablesAre(expectedTemplates))
-               .And(x => x.ThenTheDownstreamUrlTemplateIs("api/product/products/{productId}"))
                .BDDfy();
         }
 
@@ -114,10 +86,8 @@ namespace Ocelot.UnitTests.UrlMatcher
 
             this.Given(x => x.GivenIHaveAUpstreamPath("api/product/products/1/2"))
                  .Given(x => x.GivenIHaveAnUpstreamUrlTemplate("api/product/products/{productId}/{categoryId}"))
-                 .When(x => x.WhenIMatchThePaths())
-                 .Then(x => x.ThenTheResultIsTrue())
+                 .When(x => x.WhenIFindTheUrlVariableNamesAndValues())
                  .And(x => x.ThenTheTemplatesVariablesAre(expectedTemplates))
-                 .And(x => x.ThenTheDownstreamUrlTemplateIs("api/product/products/{productId}/{categoryId}"))
                  .BDDfy();
         }
 
@@ -132,10 +102,8 @@ namespace Ocelot.UnitTests.UrlMatcher
 
             this.Given(x => x.GivenIHaveAUpstreamPath("api/product/products/1/categories/2"))
                 .And(x => x.GivenIHaveAnUpstreamUrlTemplate("api/product/products/{productId}/categories/{categoryId}"))
-                .When(x => x.WhenIMatchThePaths())
-                .Then(x => x.ThenTheResultIsTrue())
+                .When(x => x.WhenIFindTheUrlVariableNamesAndValues())
                 .And(x => x.ThenTheTemplatesVariablesAre(expectedTemplates))
-                .And(x => x.ThenTheDownstreamUrlTemplateIs("api/product/products/{productId}/categories/{categoryId}"))
                 .BDDfy();
         }
 
@@ -151,10 +119,8 @@ namespace Ocelot.UnitTests.UrlMatcher
 
             this.Given(x => x.GivenIHaveAUpstreamPath("api/product/products/1/categories/2/variant/123"))
                 .And(x => x.GivenIHaveAnUpstreamUrlTemplate("api/product/products/{productId}/categories/{categoryId}/variant/{variantId}"))
-                .When(x => x.WhenIMatchThePaths())
-                .Then(x => x.ThenTheResultIsTrue())
+                .When(x => x.WhenIFindTheUrlVariableNamesAndValues())
                 .And(x => x.ThenTheTemplatesVariablesAre(expectedTemplates))
-                .And(x => x.ThenTheDownstreamUrlTemplateIs("api/product/products/{productId}/categories/{categoryId}/variant/{variantId}"))
                 .BDDfy();
         }
 
@@ -169,10 +135,8 @@ namespace Ocelot.UnitTests.UrlMatcher
 
             this.Given(x => x.GivenIHaveAUpstreamPath("api/product/products/1/categories/2/variant/"))
                  .And(x => x.GivenIHaveAnUpstreamUrlTemplate("api/product/products/{productId}/categories/{categoryId}/variant/"))
-                 .When(x => x.WhenIMatchThePaths())
-                 .Then(x => x.ThenTheResultIsTrue())
+                 .When(x => x.WhenIFindTheUrlVariableNamesAndValues())
                  .And(x => x.ThenTheTemplatesVariablesAre(expectedTemplates))
-                 .And(x => x.ThenTheDownstreamUrlTemplateIs("api/product/products/{productId}/categories/{categoryId}/variant/"))
                  .BDDfy();
         }
 
@@ -180,16 +144,12 @@ namespace Ocelot.UnitTests.UrlMatcher
         {
             foreach (var expectedResult in expectedResults)
             {
-                var result = _result.TemplateVariableNameAndValues
+                var result = _result.Data
                     .First(t => t.TemplateVariableName == expectedResult.TemplateVariableName);
                 result.TemplateVariableValue.ShouldBe(expectedResult.TemplateVariableValue);
             }
         }
 
-        private void ThenTheDownstreamUrlTemplateIs(string expectedDownstreamUrlTemplate)
-        {
-            _result.DownstreamUrlTemplate.ShouldBe(expectedDownstreamUrlTemplate);
-        }
         private void GivenIHaveAUpstreamPath(string downstreamPath)
         {
             _downstreamUrlPath = downstreamPath;
@@ -200,19 +160,9 @@ namespace Ocelot.UnitTests.UrlMatcher
             _downstreamPathTemplate = downstreamUrlTemplate;
         }
 
-        private void WhenIMatchThePaths()
+        private void WhenIFindTheUrlVariableNamesAndValues()
         {
-            _result = _urlMatcher.Match(_downstreamUrlPath, _downstreamPathTemplate);
-        }
-
-        private void ThenTheResultIsTrue()
-        {
-            _result.Match.ShouldBeTrue();
-        }
-
-        private void ThenTheResultIsFalse()
-        {
-            _result.Match.ShouldBeFalse();
+            _result = _finder.Find(_downstreamUrlPath, _downstreamPathTemplate);
         }
     }
 } 

test/Ocelot.UnitTests/UrlTemplateReplacer/UpstreamUrlPathTemplateVariableReplacerTests.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using Ocelot.Library.Infrastructure.DownstreamRouteFinder;
+using Ocelot.Library.Infrastructure.Responses;
 using Ocelot.Library.Infrastructure.UrlMatcher;
 using Ocelot.Library.Infrastructure.UrlTemplateReplacer;
 using Shouldly;
@@ -11,7 +12,7 @@ namespace Ocelot.UnitTests.UrlTemplateReplacer
     public class UpstreamUrlPathTemplateVariableReplacerTests
     {
         private DownstreamRoute _downstreamRoute;
-        private string _result;
+        private Response<string> _result;
         private readonly IDownstreamUrlTemplateVariableReplacer _downstreamUrlPathReplacer;
 
         public UpstreamUrlPathTemplateVariableReplacerTests()
@@ -135,7 +136,7 @@ namespace Ocelot.UnitTests.UrlTemplateReplacer
 
         private void ThenTheDownstreamUrlPathIsReturned(string expected)
         {
-            _result.ShouldBe(expected);
+            _result.Data.ShouldBe(expected);
         }
 
     }