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; }
+    }
+}