3.0.0 Release

README.md

@@ -1,6 +1,8 @@
 # Serilog.Extensions.Hosting [![Build status](https://ci.appveyor.com/api/projects/status/ue4s7htjwj88fulh?svg=true)](https://ci.appveyor.com/project/serilog/serilog-extensions-hosting) [![NuGet Version](http://img.shields.io/nuget/v/Serilog.Extensions.Hosting.svg?style=flat)](https://www.nuget.org/packages/Serilog.Extensions.Hosting/) 
 
-Serilog logging for Microsoft.Extensions.Hosting . This package routes Microsoft.Extensions.Hosting log messages through Serilog, so you can get information about the framework's internal operations logged to the same Serilog sinks as your application events.
+Serilog logging for _Microsoft.Extensions.Hosting_. This package routes framework log messages through Serilog, so you can get information about the framework's internal operations written to the same Serilog sinks as your application events.
+
+**ASP.NET Core** applications should consider [using _Serilog.AspNetCore_ instead](https://github.com/serilog/serilog-aspnetcore), which bundles this package and includes other ASP.NET Core-specific features.
 
 ### Instructions
 
@@ -54,7 +56,7 @@ public class Program
 }
 ```
 
-**Finally**, clean up by removing the rema `"Logging"` section from _appsettings.json_ files (this can be replaced with [Serilog configuration](https://github.com/serilog/serilog-settings-configuration) as shown in [this example](https://github.com/serilog/serilog-hosting/blob/dev/samples/SimpleServiceSample/Program.cs), if required)
+**Finally**, clean up by removing the remaining `"Logging"` section from _appsettings.json_ files (this can be replaced with [Serilog configuration](https://github.com/serilog/serilog-settings-configuration) as shown in [this example](https://github.com/serilog/serilog-extensions-hosting/blob/dev/samples/SimpleServiceSample/Program.cs), if required)
 
 That's it! You will see log output like:
 
@@ -63,7 +65,7 @@ That's it! You will see log output like:
 [22:10:39 INF] The current time is: 12/05/2018 10:10:39 +00:00
 ```
 
-A more complete example, showing _appsettings.json_ configuration, can be found in [the sample project here](https://github.com/serilog/serilog-hostinh/tree/dev/samples/SimpleServiceSample).
+A more complete example, showing _appsettings.json_ configuration, can be found in [the sample project here](https://github.com/serilog/serilog-hosting/tree/dev/samples/SimpleServiceSample).
 
 ### Using the package
 
@@ -78,39 +80,11 @@ You can alternatively configure Serilog using a delegate as shown below:
 ```csharp
     // dotnet add package Serilog.Settings.Configuration
     .UseSerilog((hostingContext, loggerConfiguration) => loggerConfiguration
-	.ReadFrom.Configuration(hostingContext.Configuration)
-	.Enrich.FromLogContext()
-	.WriteTo.Console())
+        .ReadFrom.Configuration(hostingContext.Configuration)
+        .Enrich.FromLogContext()
+        .WriteTo.Console())
 ```
 
 This has the advantage of making the `hostingContext`'s `Configuration` object available for configuration of the logger, but at the expense of recording `Exception`s raised earlier in program startup.
 
 If this method is used, `Log.Logger` is assigned implicitly, and closed when the app is shut down.
-
-### Writing to the Azure Diagnostics Log Stream
-
-The Azure Diagnostic Log Stream ships events from any files in the `D:\home\LogFiles\` folder. To enable this for your app, first install the _Serilog.Sinks.File_ package:
-
-```powershell
-Install-Package Serilog.Sinks.File
-```
-
-Then add a file sink to your `LoggerConfiguration`, taking care to set the `shared` and `flushToDiskInterval` parameters:
-
-```csharp
-    public static int Main(string[] args)
-    {
-        Log.Logger = new LoggerConfiguration()
-            .MinimumLevel.Debug()
-            .MinimumLevel.Override("Microsoft", LogEventLevel.Information)
-            .Enrich.FromLogContext()
-            .WriteTo.Console()
-	    // Add this line:
-	    .WriteTo.File(
-	    	@"D:\home\LogFiles\Application\myapp.txt",
-		fileSizeLimitBytes: 1_000_000,
-		rollOnFileSizeLimit: true,
-		shared: true,
-		flushToDiskInterval: TimeSpan.FromSeconds(1))
-            .CreateLogger();
-```

appveyor.yml

@@ -7,10 +7,13 @@ build_script:
 - ps: ./Build.ps1
 artifacts:
 - path: artifacts/Serilog.*.nupkg
+skip_commits:
+  files:
+    - README.md
 deploy:
 - provider: NuGet
   api_key:
-    secure: bd9z4P73oltOXudAjPehwp9iDKsPtC+HbgshOrSgoyQKr5xVK+bxJQngrDJkHdY8
+    secure: JAnOxPQMZRp8ousbAW4vYnVtd936AOMp4gDGucCQ1RZrDZW3J+X5QmbLO7OJKtBr
   skip_symbols: true
   on:
     branch: /^(master|dev)$/

global.json

@@ -1,5 +1,5 @@
 {
   "sdk": {
-    "version": "2.1.300-*"
+    "version": "2.2.105"
   }
 }

samples/SimpleServiceSample/PrintTimeService.cs

@@ -4,7 +4,7 @@
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 
-namespace SimpleWebSample
+namespace SimpleServiceSample
 {
     public class PrintTimeService : IHostedService, IDisposable
     {

samples/SimpleServiceSample/Program.cs

@@ -1,11 +1,11 @@
 using System;
 using System.IO;
-using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Configuration;
-using Serilog;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Serilog;
 
-namespace SimpleWebSample
+namespace SimpleServiceSample
 {
     public class Program
     {

samples/SimpleServiceSample/SimpleServiceSample.csproj

@@ -13,12 +13,12 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="2.1.0-rc1-final" />
-    <PackageReference Include="Microsoft.Extensions.Hosting" Version="2.1.0-rc1-final" />
-    <PackageReference Include="Microsoft.Extensions.Configuration" Version="2.1.0-rc1-final" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="2.1.0-rc1-final" />
-    <PackageReference Include="Serilog.Sinks.Console" Version="3.0.1" />
-    <PackageReference Include="Serilog.Settings.Configuration" Version="2.4.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="2.2.4" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="2.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="2.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="2.2.0" />
+    <PackageReference Include="Serilog.Sinks.Console" Version="3.1.1" />
+    <PackageReference Include="Serilog.Settings.Configuration" Version="3.1.0" />
   </ItemGroup>
 
 </Project>

serilog-extensions-hosting.sln.DotSettings

@@ -0,0 +1,5 @@
+<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=appsettings/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=benaadams/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=destructure/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Serilog/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>

src/Serilog.Extensions.Hosting/Extensions/Hosting/AmbientDiagnosticContextCollector.cs

@@ -0,0 +1,46 @@
+// Copyright 2019 Serilog Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using System;
+using System.Threading;
+
+namespace Serilog.Extensions.Hosting
+{
+    class AmbientDiagnosticContextCollector : IDisposable
+    {
+        static readonly AsyncLocal<AmbientDiagnosticContextCollector> AmbientCollector =
+            new AsyncLocal<AmbientDiagnosticContextCollector>();
+
+        // The indirection here ensures that completing collection cleans up the collector in all
+        // execution contexts. Via @benaadams' addition to `HttpContextAccessor` :-)
+        DiagnosticContextCollector _collector;
+
+        public static DiagnosticContextCollector Current => AmbientCollector.Value?._collector;
+
+        public static DiagnosticContextCollector Begin()
+        {
+            var value = new AmbientDiagnosticContextCollector();
+            value._collector = new DiagnosticContextCollector(value);
+            AmbientCollector.Value = value;
+            return value._collector;
+        }
+
+        public void Dispose()
+        {
+            _collector = null;
+            if (AmbientCollector.Value == this)
+                AmbientCollector.Value = null;
+        }
+    }
+}

src/Serilog.Extensions.Hosting/Extensions/Hosting/DiagnosticContext.cs

@@ -0,0 +1,60 @@
+// Copyright 2019 Serilog Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using System;
+using System.Threading;
+
+namespace Serilog.Extensions.Hosting
+{
+    /// <summary>
+    /// Implements an ambient diagnostic context using <see cref="AsyncLocal{T}"/>.
+    /// </summary>
+    /// <remarks>Consumers should use <see cref="IDiagnosticContext"/> to set context properties.</remarks>
+    public sealed class DiagnosticContext : IDiagnosticContext
+    {
+        readonly ILogger _logger;
+
+        /// <summary>
+        /// Construct a <see cref="DiagnosticContext"/>.
+        /// </summary>
+        /// <param name="logger">A logger for binding properties in the context, or <c>null</c> to use <see cref="Log.Logger"/>.</param>
+        public DiagnosticContext(ILogger logger)
+        {
+            _logger = logger;
+        }
+
+        /// <summary>
+        /// Start collecting properties to associate with the current diagnostic context. This will replace
+        /// the active collector, if any.
+        /// </summary>
+        /// <returns>A collector that will receive properties added in the current diagnostic context.</returns>
+        public DiagnosticContextCollector BeginCollection()
+        {
+            return AmbientDiagnosticContextCollector.Begin();
+        }
+
+        /// <inheritdoc cref="IDiagnosticContext.Set"/>
+        public void Set(string propertyName, object value, bool destructureObjects = false)
+        {
+            if (propertyName == null) throw new ArgumentNullException(nameof(propertyName));
+
+            var collector = AmbientDiagnosticContextCollector.Current;
+            if (collector != null && 
+                (_logger ?? Log.Logger).BindProperty(propertyName, value, destructureObjects, out var property))
+            {
+                collector.AddOrUpdate(property);
+            }
+        }
+    }
+}

src/Serilog.Extensions.Hosting/Extensions/Hosting/DiagnosticContextCollector.cs

@@ -0,0 +1,65 @@
+using System;
+using System.Collections.Generic;
+using Serilog.Events;
+
+namespace Serilog.Extensions.Hosting
+{
+    /// <summary>
+    /// A container that receives properties added to a diagnostic context.
+    /// </summary>
+    public sealed class DiagnosticContextCollector : IDisposable
+    {
+        readonly IDisposable _chainedDisposable;
+        readonly object _propertiesLock = new object();
+        Dictionary<string, LogEventProperty> _properties = new Dictionary<string, LogEventProperty>();
+
+        /// <summary>
+        /// Construct a <see cref="DiagnosticContextCollector"/>.
+        /// </summary>
+        /// <param name="chainedDisposable">An object that will be disposed to signal completion/disposal of
+        /// the collector.</param>
+        public DiagnosticContextCollector(IDisposable chainedDisposable)
+        {
+            _chainedDisposable = chainedDisposable ?? throw new ArgumentNullException(nameof(chainedDisposable));
+        }
+
+        /// <summary>
+        /// Add the property to the context.
+        /// </summary>
+        /// <param name="property">The property to add.</param>
+        public void AddOrUpdate(LogEventProperty property)
+        {
+            if (property == null) throw new ArgumentNullException(nameof(property));
+
+            lock (_propertiesLock)
+            {
+                if (_properties == null) return;
+                _properties[property.Name] = property;
+            }
+        }
+
+        /// <summary>
+        /// Complete the context and retrieve the properties added to it, if any. This will
+        /// stop collection and remove the collector from the original execution context and
+        /// any of its children.
+        /// </summary>
+        /// <param name="properties">The collected properties, or null if no collection is active.</param>
+        /// <returns>True if properties could be collected.</returns>
+        public bool TryComplete(out IEnumerable<LogEventProperty> properties)
+        {
+            lock (_propertiesLock)
+            {
+                properties = _properties?.Values;
+                _properties = null;
+                Dispose();
+                return properties != null;
+            }
+        }
+
+        /// <inheritdoc/>
+        public void Dispose()
+        {
+            _chainedDisposable.Dispose();
+        }
+    }
+}

src/Serilog.Extensions.Hosting/Hosting/SerilogLoggerFactory.cs → src/Serilog.Extensions.Hosting/Extensions/Hosting/SerilogLoggerFactory.cs

@@ -12,18 +12,25 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+using System;
+using System.ComponentModel;
 using Microsoft.Extensions.Logging;
 using Serilog.Debugging;
 using Serilog.Extensions.Logging;
 
+// To line up with the convention used elsewhere in the *.Extensions libraries, this
+// should have been Serilog.Extensions.Hosting.
+// ReSharper disable once CheckNamespace
 namespace Serilog.Hosting
 {
     /// <summary>
     /// Implements <see cref="ILoggerFactory"/> so that we can inject Serilog Logger.
     /// </summary>
+    [Obsolete("Replaced with Serilog.Extensions.Logging.SerilogLoggerFactory")]
+    [EditorBrowsable(EditorBrowsableState.Never)]
     public class SerilogLoggerFactory : ILoggerFactory
     {
-        private readonly SerilogLoggerProvider _provider;
+        readonly SerilogLoggerProvider _provider;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="SerilogLoggerFactory"/> class.

src/Serilog.Extensions.Hosting/IDiagnosticContext.cs

@@ -0,0 +1,32 @@
+// Copyright 2019 Serilog Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+namespace Serilog
+{
+    /// <summary>
+    /// Collects diagnostic information for packaging into wide events.
+    /// </summary>
+    public interface IDiagnosticContext
+    {
+        /// <summary>
+        /// Set the specified property on the current diagnostic context. The property will be collected
+        /// and attached to the event emitted at the completion of the context.
+        /// </summary>
+        /// <param name="propertyName">The name of the property. Must be non-empty.</param>
+        /// <param name="value">The property value.</param>
+        /// <param name="destructureObjects">If true, the value will be serialized as structured
+        /// data if possible; if false, the object will be recorded as a scalar or simple array.</param>
+        void Set(string propertyName, object value, bool destructureObjects = false); 
+    }
+}