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etag all pages

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This commit is contained in:
Tommy Parnell
2022-06-19 13:48:48 -04:00
parent 2e5161b949
commit b316cc7e8e
7 changed files with 59 additions and 6 deletions
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12
src/TerribleDev.Blog.Web/Extensions/ArrayExtensions.cs Normal file
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@@ -0,0 +1,12 @@
using System;
namespace TerribleDev.Blog.Web
{
public static class ArrayExtensions
{
public static string ToHexString(this byte[] bytes)
{
return Convert.ToHexString(bytes);
}
}
}

8
src/TerribleDev.Blog.Web/Factories/BlogFactory.cs
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@@ -15,6 +15,8 @@ using System.Collections.Concurrent;
using Schema.NET;
using System.Text.RegularExpressions;
using TerribleDev.Blog.Web.Factories;
using System.Text;
using System.Security.Cryptography;
namespace TerribleDev.Blog.Web
{
@@ -123,7 +125,8 @@ namespace TerribleDev.Blog.Web
JsonLDString = ld.ToHtmlEscapedString().Replace("https://schema.org", "https://schema.org/true"),
JsonLDBreadcrumb = breadcrumb,
JsonLDBreadcrumbString = breadcrumb.ToHtmlEscapedString().Replace("https://schema.org", "https://schema.org/true"),
HasCode = hasCode
HasCode = hasCode,
MarkdownMD5 = MD5.Create().ComputeHash(Encoding.UTF8.GetBytes(markdownText)).ToHexString()
};
var thumbNailUrl = string.IsNullOrWhiteSpace(postSettings.thumbnailImage) ?
postImages?.FirstOrDefault() ?? "https://www.gravatar.com/avatar/333e3cea32cd17ff2007d131df336061?s=640" :
@@ -176,7 +179,8 @@ namespace TerribleDev.Blog.Web
SummaryPlainShort = (postContentPlain.Length <= 147 ? postContentPlain : postContentPlain.Substring(0, 146)) + "...",
JsonLDBreadcrumb = breadcrumb,
JsonLDBreadcrumbString = breadcrumb.ToHtmlEscapedString().Replace("https://schema.org", "https://schema.org/true"),
HasCode = hasCode
HasCode = hasCode,
MarkdownMD5 = MD5.Create().ComputeHash(Encoding.UTF8.GetBytes(markdownText)).ToHexString()
};
return new LandingPage()
{

34
src/TerribleDev.Blog.Web/Filters/ETagFilter.cs Normal file
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@@ -0,0 +1,34 @@
using System;
using System.Collections.Concurrent;
using System.Security.Cryptography;
using System.Text;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Filters;
namespace TerribleDev.Blog.Web.Filters
{
public class StaticETag: ActionFilterAttribute
{
public static string staticEtag = MD5.Create().ComputeHash(Encoding.UTF8.GetBytes(DateTimeOffset.Now.ToUnixTimeMilliseconds().ToString())).ToHexString().Substring(0,8);
public static ConcurrentDictionary<string, string> cache = new ConcurrentDictionary<string, string>();
public override void OnActionExecuting(ActionExecutingContext context)
{
var etag = context.HttpContext.Request.Headers["If-None-Match"];
if(etag == staticEtag)
{
context.Result = new StatusCodeResult(304);
}
else
{
base.OnActionExecuting(context);
}
}
public override void OnActionExecuted(ActionExecutedContext context)
{
if(context.HttpContext.Response.StatusCode >= 200 && context.HttpContext.Response.StatusCode < 300 && context.HttpContext.Response.Headers.ETag.Count == 0)
{
context.HttpContext.Response.Headers.Add("ETag", staticEtag);
}
}
}
}

1
src/TerribleDev.Blog.Web/Models/IPostContent.cs
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@@ -22,5 +22,6 @@ namespace TerribleDev.Blog.Web.Models
public string JsonLDString { get; set; }
BreadcrumbList JsonLDBreadcrumb { get; set; }
string JsonLDBreadcrumbString { get; set; }
string MarkdownMD5 { get; set; }
}
}

1
src/TerribleDev.Blog.Web/Models/PostContent.cs
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@@ -20,5 +20,6 @@ namespace TerribleDev.Blog.Web.Models
public BreadcrumbList JsonLDBreadcrumb { get; set; }
public string JsonLDBreadcrumbString { get; set; }
public bool HasCode { get; set; }
public string MarkdownMD5 { get; set; }
}
}

5
src/TerribleDev.Blog.Web/Startup.cs
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@@ -14,6 +14,7 @@ using TerribleDev.Blog.Web.Factories;
using Microsoft.Extensions.Hosting;
using WebMarkupMin.AspNetCore6;
using Microsoft.Extensions.Logging;
using TerribleDev.Blog.Web.Filters;
namespace TerribleDev.Blog.Web
{
@@ -58,7 +59,9 @@ namespace TerribleDev.Blog.Web
}
return postCache;
});
var controllerBuilder = services.AddControllersWithViews();
var controllerBuilder = services.AddControllersWithViews(a => {
a.Filters.Add(new StaticETag());
});
#if DEBUG
if (Env.IsDevelopment())
{

4
src/TerribleDev.Blog.Web/appsettings.Development.json
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@@ -1,9 +1,7 @@
{
"Logging": {
"LogLevel": {
"Default": "Debug",
"System": "Information",
"Microsoft": "Information"
"Default": "Warning"
}
}
}