Add Fortunes endpoint that returns RazorComponentResult

Author: DamianEdwards

src/BenchmarksApps/TechEmpower/Minimal/Database/Db.cs

@@ -1,4 +1,4 @@
-using System.Data.Common;
+using System.Data.Common;
 using Dapper;
 using Minimal.Models;
 
@@ -99,4 +99,29 @@ public async Task<List<Fortune>> LoadFortunesRows()
 
         return result;
     }
+
+    public Task<List<Fortune>> LoadFortunesRowsNoDb()
+    {
+        // Benchmark requirements explicitly prohibit pre-initializing the list size
+        var result = new List<Fortune>
+        {
+            new(1, "fortune: No such file or directory"),
+            new(2, "A computer scientist is someone who fixes things that aren't broken."),
+            new(3, "After enough decimal places, nobody gives a damn."),
+            new(4, "A bad random number generator: 1, 1, 1, 1, 1, 4.33e+67, 1, 1, 1"),
+            new(5, "A computer program does what you tell it to do, not what you want it to do."),
+            new(6, "Emacs is a nice operating system, but I prefer UNIX. — Tom Christaensen"),
+            new(7, "Any program that runs right is obsolete."),
+            new(8, "A list is only as strong as its weakest link. — Donald Knuth"),
+            new(9, "Feature: A bug with seniority."),
+            new(10, "Computers make very fast, very accurate mistakes."),
+            new(11, "<script>alert(\"This should not be displayed in a browser alert box.\");</script>"),
+            new(12, "フレームワークのベンチマーク"),
+            new(0, "Additional fortune added at request time.")
+        };
+
+        result.Sort(FortuneSortComparison);
+
+        return Task.FromResult(result);
+    }
 }

src/BenchmarksApps/TechEmpower/Minimal/FortunesRazorParameters.cs

@@ -0,0 +1,63 @@
+using System.Collections;
+using System.Diagnostics.CodeAnalysis;
+using Minimal.Models;
+using Minimal.Templates;
+
+namespace Minimal;
+
+internal readonly struct FortunesRazorParameters(List<Fortune> model) : IReadOnlyDictionary<string, object?>
+{
+    private const string ModelKeyName = nameof(FortunesRazor.Model);
+
+    private readonly KeyValuePair<string, object?> _modelKvp = new(ModelKeyName, model);
+
+    public object? this[string key] => KeyIsModel(key) ? model : null;
+
+    public IEnumerable<string> Keys { get; } = [ModelKeyName];
+
+    public IEnumerable<object?> Values { get; } = [model];
+
+    public int Count { get; } = 1;
+
+    public bool ContainsKey(string key) => KeyIsModel(key);
+
+    public IEnumerator<KeyValuePair<string, object?>> GetEnumerator() => new Enumerator(_modelKvp);
+
+    IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
+
+    public bool TryGetValue(string key, [MaybeNullWhen(false)] out object? value)
+    {
+        if (KeyIsModel(key))
+        {
+            value = model;
+            return true;
+        }
+        value = default;
+        return false;
+    }
+
+    private static bool KeyIsModel(string key) => ModelKeyName.Equals(key, StringComparison.Ordinal);
+
+    private struct Enumerator(KeyValuePair<string, object?> kvp) : IEnumerator<KeyValuePair<string, object?>>
+    {
+        private bool _moved;
+
+        public readonly KeyValuePair<string, object?> Current { get; } = kvp;
+
+        readonly object IEnumerator.Current => Current;
+
+        public bool MoveNext()
+        {
+            if (_moved)
+            {
+                return false;
+            }
+            _moved = true;
+            return true;
+        }
+
+        public readonly void Dispose() { }
+
+        public void Reset() => throw new NotSupportedException();
+    }
+}

src/BenchmarksApps/TechEmpower/Minimal/Program.cs

@@ -1,7 +1,6 @@
 using System.Text.Encodings.Web;
 using System.Text.Unicode;
 using Microsoft.AspNetCore.Http.HttpResults;
-using RazorSlices;
 using Minimal;
 using Minimal.Database;
 using Minimal.Models;
@@ -23,6 +22,7 @@
 
 // Add services to the container.
 builder.Services.AddSingleton(new Db(appSettings));
+builder.Services.AddRazorComponents();
 
 var app = builder.Build();
 
@@ -42,11 +42,24 @@
 
 app.MapGet("/fortunes", async (HttpContext context, Db db) => {
     var fortunes = await db.LoadFortunesRows();
+    //var fortunes = await db.LoadFortunesRowsNoDb(); // Don't call the database
     var template = (RazorSliceHttpResult<List<Fortune>>)Fortunes.Create(fortunes);
     template.HtmlEncoder = htmlEncoder;
     return template;
 });
 
+app.MapGet("/fortunes/razor", async (HttpContext context, Db db) => {
+    var fortunes = await db.LoadFortunesRows();
+    //var fortunes = await db.LoadFortunesRowsNoDb(); // Don't call the database
+    var parameters = new Dictionary<string, object?> { { nameof(FortunesRazor.Model), fortunes } };
+    //var parameters = new FortunesRazorParameters(fortunes); // Custom parameters class to avoid allocating a Dictionary
+    var result = new RazorComponentResult<FortunesRazor>(parameters)
+    {
+        PreventStreamingRendering = true
+    };
+    return result;
+});
+
 app.MapGet("/queries/{count}", async (Db db, int count) => await db.LoadMultipleQueriesRows(count));
 
 app.MapGet("/queries/{count}/result", async (Db db, int count) => Results.Json(await db.LoadMultipleQueriesRows(count)));
@@ -65,4 +78,4 @@ static HtmlEncoder CreateHtmlEncoder()
     var settings = new TextEncoderSettings(UnicodeRanges.BasicLatin, UnicodeRanges.Katakana, UnicodeRanges.Hiragana);
     settings.AllowCharacter('\u2014'); // allow EM DASH through
     return HtmlEncoder.Create(settings);
-}
+}

src/BenchmarksApps/TechEmpower/Minimal/Templates/FortunesRazor.razor

@@ -0,0 +1,5 @@
+<!DOCTYPE html><html><head><title>Fortunes</title></head><body><table><tr><th>id</th><th>message</th></tr>@foreach (var item in Model){<tr><td>@(new MarkupString(item.Id.ToString(CultureInfo.InvariantCulture)))</td><td>@item.Message</td></tr>}</table></body></html>
+@code {
+    [Parameter]
+    public required List<Fortune> Model { get; set; }
+}

src/BenchmarksApps/TechEmpower/Minimal/Templates/_Imports.razor

@@ -0,0 +1,2 @@
+@using System.Globalization;
+@using Minimal.Models;

src/BenchmarksApps/TechEmpower/Minimal/minimal.benchmarks.yml

@@ -78,7 +78,7 @@ scenarios:
         presetHeaders: html
         path: /fortunes
 
-  fortunes_result:
+  fortunes_razor:
     db:
       job: postgresql
     application:
@@ -87,7 +87,7 @@ scenarios:
       job: wrk
       variables:
         presetHeaders: html
-        path: /fortunes/result
+        path: /fortunes/razor
 
   single_query:
     db: