Added DependencyIbjection project

lsfera · Jul 5, 2024 · 8cc1fed · 8cc1fed
1 parent b024c6f
commit 8cc1fed
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Showing 5 changed files with 134 additions and 0 deletions.
diff --git a/Blumchen.sln b/Blumchen.sln
@@ -43,6 +43,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "postgres", "postgres", "{8A
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "demo", "demo", "{A4044484-FE08-4399-8239-14AABFA30AD7}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Blumchen.DependencyInjection", "src\Blumchen.DependencyInjection\Blumchen.DependencyInjection.csproj", "{A07167E3-4CF7-40EF-8E55-A37A0F57B89D}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -69,6 +71,10 @@ Global
 		{2BBDA071-FB1C-4D62-A954-B22EA6B1C738}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{2BBDA071-FB1C-4D62-A954-B22EA6B1C738}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{2BBDA071-FB1C-4D62-A954-B22EA6B1C738}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A07167E3-4CF7-40EF-8E55-A37A0F57B89D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A07167E3-4CF7-40EF-8E55-A37A0F57B89D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A07167E3-4CF7-40EF-8E55-A37A0F57B89D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A07167E3-4CF7-40EF-8E55-A37A0F57B89D}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

diff --git a/src/Blumchen.DependencyInjection/Blumchen.DependencyInjection.csproj b/src/Blumchen.DependencyInjection/Blumchen.DependencyInjection.csproj
@@ -0,0 +1,49 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+      <VersionPrefix>0.1.0</VersionPrefix>
+      <TargetFramework>net8.0</TargetFramework>
+      <GenerateAssemblyTitleAttribute>true</GenerateAssemblyTitleAttribute>
+      <GenerateAssemblyDescriptionAttribute>true</GenerateAssemblyDescriptionAttribute>
+      <GenerateAssemblyProductAttribute>true</GenerateAssemblyProductAttribute>
+      <GenerateAssemblyCopyrightAttribute>false</GenerateAssemblyCopyrightAttribute>
+      <GenerateAssemblyVersionAttribute>true</GenerateAssemblyVersionAttribute>
+      <GenerateAssemblyFileVersionAttribute>true</GenerateAssemblyFileVersionAttribute>
+      <GenerateAssemblyInformationalVersionAttribute>true</GenerateAssemblyInformationalVersionAttribute>
+      <GenerateDocumentationFile>true</GenerateDocumentationFile>
+      <LangVersion>12.0</LangVersion>
+      <Authors>Oskar Dudycz</Authors>
+      <!--        <PackageIconUrl>https://github.com/event-driven-io/Blumchen/content/images/emblem.png</PackageIconUrl>-->
+      <PackageProjectUrl>https://github.com/event-driven-io/Blumchen</PackageProjectUrl>
+      <PackageLicenseExpression>MIT</PackageLicenseExpression>
+      <RepositoryUrl>https://github.com/event-driven-io/Blumchen.git</RepositoryUrl>
+      <PublishRepositoryUrl>true</PublishRepositoryUrl>
+      <Product>Blumchen</Product>
+      <GenerateDocumentationFile>true</GenerateDocumentationFile>
+      <EmbedUntrackedSources>true</EmbedUntrackedSources>
+      <IncludeSymbols>true</IncludeSymbols>
+      <SymbolPackageFormat>snupkg</SymbolPackageFormat>
+      <RootNamespace>Blumchen</RootNamespace>
+      <PublishAot>true</PublishAot>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+    <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+        <NoWarn>1591</NoWarn>
+    </PropertyGroup>
+
+    <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
+        <NoWarn>1591</NoWarn>
+    </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="8.0.0" />
+    <PackageReference Include="Polly" Version="8.4.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Blumchen\Blumchen.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/src/Blumchen.DependencyInjection/Configuration/DatabaseOptions.cs b/src/Blumchen.DependencyInjection/Configuration/DatabaseOptions.cs
@@ -0,0 +1,2 @@
+namespace Blumchen.Configuration;
+public record DatabaseOptions(string ConnectionString);
diff --git a/src/Blumchen.DependencyInjection/Workers/ServiceCollectionExtensions.cs b/src/Blumchen.DependencyInjection/Workers/ServiceCollectionExtensions.cs
@@ -0,0 +1,13 @@
+using Microsoft.Extensions.DependencyInjection;
+#pragma warning disable IL2091
+
+namespace Blumchen.Workers;
+
+public static class ServiceCollectionExtensions
+{
+    public static IServiceCollection AddBlumchen<T,TU>(this IServiceCollection service, T? instance = default)
+        where T : Worker<TU> where TU : class =>
+        instance is null
+            ? service.AddHostedService<T>()
+            : service.AddHostedService(_=>instance);
+}
diff --git a/src/Blumchen.DependencyInjection/Workers/Worker.cs b/src/Blumchen.DependencyInjection/Workers/Worker.cs
@@ -0,0 +1,64 @@
+using System.Collections.Concurrent;
+using System.Text.Json.Serialization;
+using Blumchen.Configuration;
+using Blumchen.Serialization;
+using Blumchen.Subscriptions;
+using Blumchen.Subscriptions.Management;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+using Polly;
+
+
+namespace Blumchen.Workers;
+
+public abstract class Worker<T>(
+    DatabaseOptions databaseOptions,
+    IHandler<T> handler,
+    JsonSerializerContext jsonSerializerContext,
+    IErrorProcessor errorProcessor,
+    ResiliencePipeline pipeline,
+    INamingPolicy namingPolicy,
+    PublicationManagement.PublicationSetupOptions publicationSetupOptions,
+    ReplicationSlotManagement.ReplicationSlotSetupOptions replicationSlotSetupOptions,
+    ILoggerFactory loggerFactory): BackgroundService where T : class
+{
+    private readonly ILogger<Worker<T>> _logger = loggerFactory.CreateLogger<Worker<T>>();
+    private string WorkerName { get; } = $"{nameof(Worker<T>)}<{typeof(T).Name}>";
+    private static readonly ConcurrentDictionary<string, Action<ILogger, string, object[]>> _actions = new(StringComparer.OrdinalIgnoreCase);
+    private static void Notify(ILogger logger, LogLevel level, string template, params object[] parameters)
+    {
+        static Action<ILogger, string, object[]> LoggerAction(LogLevel ll, bool enabled) =>
+            (ll, enabled) switch
+            {
+                (LogLevel.Information, true) => (logger, template, parameters) => logger.LogInformation(template, parameters),
+                (LogLevel.Debug, true) => (logger, template, parameters) => logger.LogDebug(template, parameters),
+                (_, _) => (_, __, ___) => { }
+            };
+        _actions.GetOrAdd(template,s => LoggerAction(level, logger.IsEnabled(level)))(logger, template, parameters);
+    }
+
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        await pipeline.ExecuteAsync(async token =>
+        {
+            await using var subscription = new Subscription();
+            await using var cursor = subscription.Subscribe(builder =>
+                    builder
+                        .ConnectionString(databaseOptions.ConnectionString)
+                        .WithErrorProcessor(errorProcessor)
+                        .Handles<T, IHandler<T>>(handler)
+                        .NamingPolicy(namingPolicy)
+                        .JsonContext(jsonSerializerContext)
+                        .WithPublicationOptions(publicationSetupOptions)
+                        .WithReplicationOptions(replicationSlotSetupOptions)
+                , ct: token, loggerFactory: loggerFactory).GetAsyncEnumerator(token);
+            Notify(_logger, LogLevel.Information,"{WorkerName} started", WorkerName);
+            while (await cursor.MoveNextAsync().ConfigureAwait(false) && !token.IsCancellationRequested)
+                Notify(_logger, LogLevel.Debug, "{cursor.Current} processed", cursor.Current);
+
+        }, stoppingToken).ConfigureAwait(false);
+        Notify(_logger, LogLevel.Information, "{WorkerName} stopped", WorkerName);
+        return;
+    }
+
+}