commit 2bb8dee374f7a77c84ed9702b99d8e09181a9503 Author: Tommy Parnell Date: Tue Feb 18 12:33:51 2025 -0500 inti diff --git a/.dockerignore b/.dockerignore new file mode 100644 index 0000000..cd967fc --- /dev/null +++ b/.dockerignore @@ -0,0 +1,25 @@ +**/.dockerignore +**/.env +**/.git +**/.gitignore +**/.project +**/.settings +**/.toolstarget +**/.vs +**/.vscode +**/.idea +**/*.*proj.user +**/*.dbmdl +**/*.jfm +**/azds.yaml +**/bin +**/charts +**/docker-compose* +**/Dockerfile* +**/node_modules +**/npm-debug.log +**/obj +**/secrets.dev.yaml +**/values.dev.yaml +LICENSE +README.md \ No newline at end of file diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..104b544 --- /dev/null +++ b/.gitignore @@ -0,0 +1,484 @@ +## Ignore Visual Studio temporary files, build results, and +## files generated by popular Visual Studio add-ons. +## +## Get latest from `dotnet new gitignore` + +# dotenv files +.env + +# User-specific files +*.rsuser +*.suo +*.user +*.userosscache +*.sln.docstates + +# User-specific files (MonoDevelop/Xamarin Studio) +*.userprefs + +# Mono auto generated files +mono_crash.* + +# Build results +[Dd]ebug/ +[Dd]ebugPublic/ +[Rr]elease/ +[Rr]eleases/ +x64/ +x86/ +[Ww][Ii][Nn]32/ +[Aa][Rr][Mm]/ +[Aa][Rr][Mm]64/ +bld/ +[Bb]in/ +[Oo]bj/ +[Ll]og/ +[Ll]ogs/ + +# Visual Studio 2015/2017 cache/options directory +.vs/ +# Uncomment if you have tasks that create the project's static files in wwwroot +#wwwroot/ + +# Visual Studio 2017 auto generated files +Generated\ Files/ + +# MSTest test Results +[Tt]est[Rr]esult*/ +[Bb]uild[Ll]og.* + +# NUnit +*.VisualState.xml +TestResult.xml +nunit-*.xml + +# Build Results of an ATL Project +[Dd]ebugPS/ +[Rr]eleasePS/ +dlldata.c + +# Benchmark Results +BenchmarkDotNet.Artifacts/ + +# .NET +project.lock.json +project.fragment.lock.json +artifacts/ + +# Tye +.tye/ + +# ASP.NET Scaffolding +ScaffoldingReadMe.txt + +# StyleCop +StyleCopReport.xml + +# Files built by Visual Studio +*_i.c +*_p.c +*_h.h +*.ilk +*.meta +*.obj +*.iobj +*.pch +*.pdb +*.ipdb +*.pgc +*.pgd +*.rsp +*.sbr +*.tlb +*.tli +*.tlh +*.tmp +*.tmp_proj +*_wpftmp.csproj +*.log +*.tlog +*.vspscc +*.vssscc +.builds +*.pidb +*.svclog +*.scc + +# Chutzpah Test files +_Chutzpah* + +# Visual C++ cache files +ipch/ +*.aps +*.ncb +*.opendb +*.opensdf +*.sdf +*.cachefile +*.VC.db +*.VC.VC.opendb + +# Visual Studio profiler +*.psess +*.vsp +*.vspx +*.sap + +# Visual Studio Trace Files +*.e2e + +# TFS 2012 Local Workspace +$tf/ + +# Guidance Automation Toolkit +*.gpState + +# ReSharper is a .NET coding add-in +_ReSharper*/ +*.[Rr]e[Ss]harper +*.DotSettings.user + +# TeamCity is a build add-in +_TeamCity* + +# DotCover is a Code Coverage Tool +*.dotCover + +# AxoCover is a Code Coverage Tool +.axoCover/* +!.axoCover/settings.json + +# Coverlet is a free, cross platform Code Coverage Tool +coverage*.json +coverage*.xml +coverage*.info + +# Visual Studio code coverage results +*.coverage +*.coveragexml + +# NCrunch +_NCrunch_* +.*crunch*.local.xml +nCrunchTemp_* + +# MightyMoose +*.mm.* +AutoTest.Net/ + +# Web workbench (sass) +.sass-cache/ + +# Installshield output folder +[Ee]xpress/ + +# DocProject is a documentation generator add-in +DocProject/buildhelp/ +DocProject/Help/*.HxT +DocProject/Help/*.HxC +DocProject/Help/*.hhc +DocProject/Help/*.hhk +DocProject/Help/*.hhp +DocProject/Help/Html2 +DocProject/Help/html + +# Click-Once directory +publish/ + +# Publish Web Output +*.[Pp]ublish.xml +*.azurePubxml +# Note: Comment the next line if you want to checkin your web deploy settings, +# but database connection strings (with potential passwords) will be unencrypted +*.pubxml +*.publishproj + +# Microsoft Azure Web App publish settings. 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https://github.com/github/gitignore/blob/master/Global/macOS.gitignore +# General +.DS_Store +.AppleDouble +.LSOverride + +# Icon must end with two \r +Icon + + +# Thumbnails +._* + +# Files that might appear in the root of a volume +.DocumentRevisions-V100 +.fseventsd +.Spotlight-V100 +.TemporaryItems +.Trashes +.VolumeIcon.icns +.com.apple.timemachine.donotpresent + +# Directories potentially created on remote AFP share +.AppleDB +.AppleDesktop +Network Trash Folder +Temporary Items +.apdisk + +# content below from: https://github.com/github/gitignore/blob/master/Global/Windows.gitignore +# Windows thumbnail cache files +Thumbs.db +ehthumbs.db +ehthumbs_vista.db + +# Dump file +*.stackdump + +# Folder config file +[Dd]esktop.ini + +# Recycle Bin used on file shares +$RECYCLE.BIN/ + +# Windows Installer files +*.cab +*.msi +*.msix +*.msm +*.msp + +# Windows shortcuts +*.lnk + +# Vim temporary swap files +*.swp diff --git a/Terribledev.PullForwardCache.sln b/Terribledev.PullForwardCache.sln new file mode 100644 index 0000000..a95e5f4 --- /dev/null +++ b/Terribledev.PullForwardCache.sln @@ -0,0 +1,16 @@ + +Microsoft Visual Studio Solution File, Format Version 12.00 +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Terribledev.PullForwardCache", "Terribledev.PullForwardCache\Terribledev.PullForwardCache.csproj", "{3E4E95BD-A7DA-47E9-8045-A08D9DD8D152}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|Any CPU = Debug|Any CPU + Release|Any CPU = Release|Any CPU + EndGlobalSection + GlobalSection(ProjectConfigurationPlatforms) = postSolution + {3E4E95BD-A7DA-47E9-8045-A08D9DD8D152}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {3E4E95BD-A7DA-47E9-8045-A08D9DD8D152}.Debug|Any CPU.Build.0 = Debug|Any CPU + {3E4E95BD-A7DA-47E9-8045-A08D9DD8D152}.Release|Any CPU.ActiveCfg = Release|Any CPU + {3E4E95BD-A7DA-47E9-8045-A08D9DD8D152}.Release|Any CPU.Build.0 = Release|Any CPU + EndGlobalSection +EndGlobal diff --git a/Terribledev.PullForwardCache/Dockerfile b/Terribledev.PullForwardCache/Dockerfile new file mode 100644 index 0000000..90c0c50 --- /dev/null +++ b/Terribledev.PullForwardCache/Dockerfile @@ -0,0 +1,23 @@ +FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base +USER $APP_UID +WORKDIR /app +EXPOSE 8080 +EXPOSE 8081 + +FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build +ARG BUILD_CONFIGURATION=Release +WORKDIR /src +COPY ["Terribledev.PullForwardCache/Terribledev.PullForwardCache.csproj", "Terribledev.PullForwardCache/"] +RUN dotnet restore "Terribledev.PullForwardCache/Terribledev.PullForwardCache.csproj" +COPY . . +WORKDIR "/src/Terribledev.PullForwardCache" +RUN dotnet build "Terribledev.PullForwardCache.csproj" -c $BUILD_CONFIGURATION -o /app/build + +FROM build AS publish +ARG BUILD_CONFIGURATION=Release +RUN dotnet publish "Terribledev.PullForwardCache.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false + +FROM base AS final +WORKDIR /app +COPY --from=publish /app/publish . +ENTRYPOINT ["dotnet", "Terribledev.PullForwardCache.dll"] diff --git a/Terribledev.PullForwardCache/Program.cs b/Terribledev.PullForwardCache/Program.cs new file mode 100644 index 0000000..9acb0c1 --- /dev/null +++ b/Terribledev.PullForwardCache/Program.cs @@ -0,0 +1,122 @@ +using Microsoft.AspNetCore.Mvc; +using System; +using System.IO; +using System.Net; +using System.Net.Http; +using System.Net.Http.Headers; +using System.Text.Json; +using System.Threading.Tasks; +using Microsoft.Extensions.Caching.Memory; + +var builder = WebApplication.CreateBuilder(args); + +// Add services to the container. +builder.Services.AddHttpClient(); +builder.Services.AddMemoryCache(); + +var app = builder.Build(); + +// Configure the HTTP request pipeline. + +string cachePath = Environment.GetEnvironmentVariable("CACHE_PATH") ?? "cache"; +if (!Directory.Exists(cachePath)) +{ + Directory.CreateDirectory(cachePath); +} + +app.MapGet("/{url}", async (string url, IHttpClientFactory clientFactory, IMemoryCache memoryCache) => +{ + var client = clientFactory.CreateClient(); + string encodedUrl = WebUtility.UrlEncode(url); + string filePath = Path.Combine(cachePath, encodedUrl); + string metadataPath = Path.Combine(cachePath, $"{encodedUrl}.json"); + + if (memoryCache.TryGetValue(encodedUrl, out FileMetadata? mdFromCache) && DateTime.Now <= mdFromCache?.Expiry) + { + return Results.File(filePath, mdFromCache.ContentType ?? "application/octet-stream"); + } + + if (File.Exists(filePath) && File.Exists(metadataPath)) + { + var metadata = JsonSerializer.Deserialize(await File.ReadAllTextAsync(metadataPath)) ?? new FileMetadata(); + var request = new HttpRequestMessage(HttpMethod.Get, url); + + if (!string.IsNullOrEmpty(metadata.ETag)) + { + request.Headers.IfNoneMatch.Add(EntityTagHeaderValue.Parse(metadata.ETag)); + } + + var response = await client.SendAsync(request); + + if (response.StatusCode == HttpStatusCode.NotModified) + { + metadata.CachedAt = DateTime.Now; + metadata.Expiry = DateTime.Now.AddHours(24); + await WriteMetadataAsync(metadataPath, metadata, memoryCache, encodedUrl); + return Results.File(filePath, metadata.ContentType ?? "application/octet-stream"); + } + else if (response.IsSuccessStatusCode) + { + return await SaveAndReturnFile(response, filePath, metadataPath, memoryCache, encodedUrl, url); + } + } + + try + { + var response = await client.GetAsync(url); + if (!response.IsSuccessStatusCode) + { + return Results.StatusCode((int)response.StatusCode); + } + + return await SaveAndReturnFile(response, filePath, metadataPath, memoryCache, encodedUrl, url); + } + catch (Exception ex) + { + return Results.Problem(ex.Message, statusCode: 500); + } +}); + +app.Run(); + +/// +/// Saves the response content to disk and updates the metadata. +/// +async Task SaveAndReturnFile(HttpResponseMessage response, string filePath, string metadataPath, IMemoryCache memoryCache, string encodedUrl, string url) +{ + var content = await response.Content.ReadAsByteArrayAsync(); + var contentType = response.Content.Headers.ContentType?.ToString() ?? "application/octet-stream"; + var eTag = response.Headers.ETag?.ToString(); + + await File.WriteAllBytesAsync(filePath, content); + + var metadata = new FileMetadata + { + Url = url, + ContentType = contentType, + CachedAt = DateTime.Now, + Expiry = DateTime.Now.AddHours(24), + ETag = eTag + }; + + await WriteMetadataAsync(metadataPath, metadata, memoryCache, encodedUrl); + return Results.File(filePath, contentType); +} + +/// +/// Writes metadata to disk and caches it in memory. +/// +async Task WriteMetadataAsync(string metadataPath, FileMetadata metadata, IMemoryCache memoryCache, string cacheKey) +{ + await File.WriteAllTextAsync(metadataPath, JsonSerializer.Serialize(metadata)); + memoryCache.Set(cacheKey, metadata, TimeSpan.FromMinutes(15)); +} + +public class FileMetadata +{ + public string Url { get; set; } = string.Empty; + public string? ContentType { get; set; } + public DateTime CachedAt { get; set; } + public DateTime Expiry { get; set; } + public string? ETag { get; set; } +} diff --git a/Terribledev.PullForwardCache/Properties/launchSettings.json b/Terribledev.PullForwardCache/Properties/launchSettings.json new file mode 100644 index 0000000..e3e03f0 --- /dev/null +++ b/Terribledev.PullForwardCache/Properties/launchSettings.json @@ -0,0 +1,38 @@ +{ + "$schema": "http://json.schemastore.org/launchsettings.json", + "iisSettings": { + "windowsAuthentication": false, + "anonymousAuthentication": true, + "iisExpress": { + "applicationUrl": "http://localhost:12371", + "sslPort": 44369 + } + }, + "profiles": { + "http": { + "commandName": "Project", + "dotnetRunMessages": true, + "launchBrowser": true, + "applicationUrl": "http://localhost:5132", + "environmentVariables": { + "ASPNETCORE_ENVIRONMENT": "Development" + } + }, + "https": { + "commandName": "Project", + "dotnetRunMessages": true, + "launchBrowser": true, + "applicationUrl": "https://localhost:7178;http://localhost:5132", + "environmentVariables": { + "ASPNETCORE_ENVIRONMENT": "Development" + } + }, + "IIS Express": { + "commandName": "IISExpress", + "launchBrowser": true, + "environmentVariables": { + "ASPNETCORE_ENVIRONMENT": "Development" + } + } + } +} diff --git a/Terribledev.PullForwardCache/Terribledev.PullForwardCache.csproj b/Terribledev.PullForwardCache/Terribledev.PullForwardCache.csproj new file mode 100644 index 0000000..ae3a56b --- /dev/null +++ b/Terribledev.PullForwardCache/Terribledev.PullForwardCache.csproj @@ -0,0 +1,16 @@ + + + + net8.0 + enable + enable + Linux + + + + + .dockerignore + + + + diff --git a/Terribledev.PullForwardCache/appsettings.Development.json b/Terribledev.PullForwardCache/appsettings.Development.json new file mode 100644 index 0000000..0c208ae --- /dev/null +++ b/Terribledev.PullForwardCache/appsettings.Development.json @@ -0,0 +1,8 @@ +{ + "Logging": { + "LogLevel": { + "Default": "Information", + "Microsoft.AspNetCore": "Warning" + } + } +} diff --git a/Terribledev.PullForwardCache/appsettings.json b/Terribledev.PullForwardCache/appsettings.json new file mode 100644 index 0000000..10f68b8 --- /dev/null +++ b/Terribledev.PullForwardCache/appsettings.json @@ -0,0 +1,9 @@ +{ + "Logging": { + "LogLevel": { + "Default": "Information", + "Microsoft.AspNetCore": "Warning" + } + }, + "AllowedHosts": "*" +} diff --git a/global.json b/global.json new file mode 100644 index 0000000..2ddda36 --- /dev/null +++ b/global.json @@ -0,0 +1,7 @@ +{ + "sdk": { + "version": "8.0.0", + "rollForward": "latestMinor", + "allowPrerelease": false + } +} \ No newline at end of file