(#641) Fixed Swashbuckle generation with route parameters (#643)

* (#641) route picker update for template routes (Swashbuckle)

* (#641) Added test to check that route parameters work with NSwag

sdk/dotnet/src/Microsoft.AspNetCore.Datasync.Swashbuckle/DatasyncDocumentFilter.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT License.
 
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.ApiExplorer;
 using Microsoft.OpenApi.Models;
 using Swashbuckle.AspNetCore.SwaggerGen;
 using System;
@@ -39,7 +40,7 @@ private enum OpType
         /// <summary>
         /// The assembly to query for TableController instances, if any.  If none is provided, the calling assembly is queried.
         /// </summary>
-        private Assembly assemblyToQuery = null;
+        private readonly Assembly assemblyToQuery = null;
 
         /// <summary>
         /// Creates a new <see cref="DatasyncDocumentFilter"/>.
@@ -68,11 +69,11 @@ public void Apply(OpenApiDocument document, DocumentFilterContext context)
                 if (entityType == null)
                     continue;
 
-                var routeAttribute = controller.GetCustomAttribute<RouteAttribute>();
-                if (routeAttribute == null)
+                var routePath = context.ApiDescriptions.FirstOrDefault(m => IsApiDescriptionForController(m, controller))?.RelativePath;
+                if (routePath == null)
                     continue;
-                var allEntitiesPath = $"/{routeAttribute.Template}";
-                var singleEntityPath = $"/{routeAttribute.Template}/{{id}}";
+                var allEntitiesPath = $"/{routePath}";
+                var singleEntityPath = $"/{routePath}/{{id}}";
 
                 // Get the various operations
                 Dictionary<OpType, OpenApiOperation> operations = new()
@@ -176,6 +177,21 @@ public void Apply(OpenApiDocument document, DocumentFilterContext context)
                 }
             }
         }
+
+        /// <summary>
+        /// Determines if the controller type is represented by the API Description.
+        /// </summary>
+        /// <param name="description">The <see cref="ApiDescription"/> being handled.</param>
+        /// <param name="controllerType">The type of the controller being used.</param>
+        /// <returns><c>true</c> if the Api description represents the controller.</returns>
+        internal static bool IsApiDescriptionForController(ApiDescription description, Type controllerType)
+        {
+            if (description.TryGetMethodInfo(out MethodInfo methodInfo))
+            {
+                return methodInfo.ReflectedType == controllerType && (methodInfo.Name.Equals("GetAsync") || methodInfo.Name.Equals("CreateAsync"));
+            }
+            return false;
+        }
 
         /// <summary>
         /// Returns a list of all table controllers in the provided assembly.

sdk/dotnet/test/Microsoft.AspNetCore.Datasync.NSwag.Test/Service/KitchenSink.cs → sdk/dotnet/test/Microsoft.AspNetCore.Datasync.NSwag.Test/Service/Models.cs

@@ -5,10 +5,12 @@
 
 namespace Microsoft.AspNetCore.Datasync.NSwag.Test.Service
 {
-    /// <summary>
-    /// A model used for validation tests.  It contains one of 
-    /// every single supported type in a nullable form.
-    /// </summary>
+    [ExcludeFromCodeCoverage]
+    public class TodoItem : EntityTableData
+    {
+        public string? Title { get; set; }
+    }
+
     [ExcludeFromCodeCoverage]
     public class KitchenSink : EntityTableData
     {

sdk/dotnet/test/Microsoft.AspNetCore.Datasync.NSwag.Test/Service/ServiceDbContext.cs

@@ -22,6 +22,11 @@ public ServiceDbContext(DbContextOptions<ServiceDbContext> options) : base(optio
         /// </summary>
         public DbSet<KitchenSink> KitchenSinks => Set<KitchenSink>();
 
+        /// <summary>
+        /// The set of TodoItem values
+        /// </summary>
+        public DbSet<TodoItem> TodoItems => Set<TodoItem>();
+
         /// <summary>
         /// Initializes the current database
         /// </summary>

sdk/dotnet/test/Microsoft.AspNetCore.Datasync.NSwag.Test/Service/TodoItemController.cs

@@ -0,0 +1,21 @@
+// Copyright (c) Microsoft Corporation. All Rights Reserved.
+// Licensed under the MIT License.
+
+using Microsoft.AspNetCore.Datasync.EFCore;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
+using System.Diagnostics.CodeAnalysis;
+
+namespace Microsoft.AspNetCore.Datasync.NSwag.Test.Service
+{
+    [Route("tables/[controller]")]
+    [ExcludeFromCodeCoverage]
+    public class TodoItemController : TableController<TodoItem>
+    {
+        public TodoItemController(ServiceDbContext context, ILogger<TodoItem> logger) : base()
+        {
+            Repository = new EntityTableRepository<TodoItem>(context);
+            Logger = logger;
+        }
+    }
+}