add the logging provider for log4net

Author: Jason Dryhurst-Smith

CorrelatorSharp.Logging.LoggerProvider.Log4Net/Class1.cs

@@ -1,7 +1,25 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>netstandard2.0</TargetFramework>
+    <PackageId>CorrelatorSharp.Logging.LoggerProvider.Log4Net</PackageId>
+
+    <Version>1.0.0</Version>
+
+    <!--Bump the assembly version only on major releases-->
+    <AssemblyVersion>1.0.0.0</AssemblyVersion>
+
+    <AssemblyName>CorrelatorSharp.Logging.LoggerProvider.Log4Net</AssemblyName>
+    <Description>CorrelatorSharp, a set of tools for adding correlation identifiers for actions performed by users and machine across your applications. Your one stop shop for context-aware logging and diagnostics.</Description>
+    <Authors>Ivan Zlatev, Jason Dryhurst-Smith</Authors>
+    <TargetFrameworks>net47;netstandard2.0</TargetFrameworks>
+    <PackageTags>context;correlation;logging;diagnostics</PackageTags>
+    <PackageProjectUrl>https://github.com/CorrelatorSharp/CorrelatorSharp</PackageProjectUrl>
+    <PackageLicenseUrl>https://github.com/CorrelatorSharp/CorrelatorSharp/blob/master/LICENSE.txt</PackageLicenseUrl>
+
   </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="log4net" Version="[2.0.8,3)" />
+    <PackageReference Include="CorrelatorSharp.Logging.Log4Net" Version="[1.0.0,2)"/>
+    <PackageReference Include="CorrelatorSharp.Logging.LoggerProvider" Version="[1.0.0,2)"/>
+  </ItemGroup>
 
 </Project>

CorrelatorSharp.Logging.LoggerProvider.Log4Net/CorrelatorSharp.Logging.LoggerProvider.Log4Net.csproj

@@ -0,0 +1,18 @@
+using System;
+using System.Diagnostics.CodeAnalysis;
+using log4net.Repository;
+using Microsoft.Extensions.Logging;
+
+namespace CorrelatorSharp.Logging.LoggerProvider.Log4Net
+{
+    [ProviderAlias("CorrelatorSharp.Log4Net")]
+    [ExcludeFromCodeCoverage]
+    public class Log4NetCorrelatorSharpLoggerProvider : CorrelatorSharpLoggerProvider
+    {
+        public Log4NetCorrelatorSharpLoggerProvider(ILoggerRepository repo = null)
+            : base(new Log4NetScopeProvider())
+        {
+            LoggingConfiguration.Current.UseLog4Net(repo);
+        }
+    }
+}

CorrelatorSharp.Logging.LoggerProvider.Log4Net/Log4NetCorrelatorSharpLoggerProvider.cs

@@ -0,0 +1,18 @@
+using System;
+
+namespace CorrelatorSharp.Logging.LoggerProvider.Log4Net
+{
+    public class Log4NetScopeProvider : IScopeProvider
+    {
+        public IDisposable BeginScope<TState>(TState state)
+        {
+            // TODO - Allow the user to provide some extra form of scope.
+            return null;
+        }
+
+        public void ErrorBuildingScope(Exception exception)
+        {
+            
+        }
+    }
+}

CorrelatorSharp.Logging.LoggerProvider.Log4Net/Log4NetScopeProvider.cs

@@ -0,0 +1,15 @@
+using CorrelatorSharp.Logging.LoggerProvider.Log4Net;
+using log4net.Repository;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+
+namespace CorrelatorSharp.Logging
+{
+    public static class ServiceCollectionExtensions
+    {
+        public static void UseCorrelatorSharpLog4NetLoggerProvider(this IServiceCollection serviceCollection, ILoggerRepository repo = null)
+        {
+            serviceCollection.AddSingleton<ILoggerProvider>(new Log4NetCorrelatorSharpLoggerProvider(repo));
+        }
+    }
+}

CorrelatorSharp.Logging.LoggerProvider.Log4Net/ServiceCollectionExtensions.cs

@@ -0,0 +1,39 @@
+environment:
+  package_version: '1.0.0'
+  assembly_version: '1.0.0.0'
+
+version: '$(package_version)+{build}'
+
+image: Visual Studio 2017
+
+dotnet_csproj:
+  patch: true
+  file: '**\*.csproj'
+  version: '$(package_version)'
+  assembly_version: '$(assembly_version)'
+
+configuration: Release
+
+before_build: dotnet restore
+
+build:
+  publish_nuget: true
+  publish_nuget_symbols: true
+  verbosity: minimal
+
+deploy:
+  - provider: GitHub
+    description: |
+      * Log4net adapter for the logging provider absraction
+    on:
+      appveyor_repo_tag: true
+
+    release: v$(package_version)
+    auth_token:
+      secure: y4HfARa+GScoSgdsOIb7A3L8TV93/wiPBgJENisycZ6yKwBANmPEe1MesK4IC6rm
+
+  - provider: NuGet
+    api_key:
+      secure: vZC+uEZj00A+9riSWLXqdnPtGa96W9SQkBy30dS2D5bOUdvteU9vOAP69QLJrY/o
+    on:
+      appveyor_repo_tag: true