notion-dotnet · KoditkarVedant · Nov 1, 2021 · Oct 25, 2021 · Oct 25, 2021 · Oct 25, 2021
diff --git a/README.md b/README.md
@@ -120,6 +120,29 @@ var complexFiler = new CompoundFilter(
   - [x] Retrieve your token's bot user
 - [x] Search
 
+## Enable internal logs
+The library make use of `ILoggerFactory` interface exposed by `Microsoft.Extensions.Logging`. Which allow you to have ability to enable the internal logs when developing application to get additional information.
+
+To enable logging you need to add the below code at startup of the application.
+
+```csharp
+// pass the ILoggerFactory instance
+NotionClientLogging.ConfigureLogger(logger);
+
+```
+
+You can set the LogLevel in config file.
+```json
+{
+  "Logging": {
+    "LogLevel": {
+      "Notion.Client": "Trace"
+    }
+  }
+}
+```
+
+You can also refer `examples/list-users` example.
 
 ## Contributors
 This project exists thanks to all the people who contribute.

diff --git a/Src/Notion.Client/Logging/Log.cs b/Src/Notion.Client/Logging/Log.cs
@@ -0,0 +1,25 @@
+using System;
+using Microsoft.Extensions.Logging;
+
+namespace Notion.Client
+{
+    internal static class Log
+    {
+        internal static ILogger logger;
+
+        internal static void Trace(string message, params object[] args)
+        {
+            logger?.LogTrace(message, args);
+        }
+
+        internal static void Information(string message, params object[] args)
+        {
+            logger?.LogInformation(message, args);
+        }
+
+        internal static void Error(Exception ex, string message, params object[] args)
+        {
+            logger?.LogError(ex, message, args);
+        }
+    }
+}
diff --git a/Src/Notion.Client/Logging/NotionClientLogging.cs b/Src/Notion.Client/Logging/NotionClientLogging.cs
@@ -0,0 +1,16 @@
+using Microsoft.Extensions.Logging;
+
+namespace Notion.Client
+{
+    public static class NotionClientLogging
+    {
+        internal static ILoggerFactory factory;
+
+        public static void ConfigureLogger(ILoggerFactory loggerFactory)
+        {
+            factory = loggerFactory;
+
+            Log.logger = Log.logger == null ? factory?.CreateLogger("Notion.Client") : Log.logger;
+        }
+    }
+}
diff --git a/Src/Notion.Client/Notion.Client.csproj b/Src/Notion.Client/Notion.Client.csproj
@@ -22,6 +22,7 @@
     </PackageReference>
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="JsonSubTypes" Version="1.8.0" />
+	  <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="5.0.0"/>
   </ItemGroup>
 
   <ItemGroup>

diff --git a/Src/Notion.Client/RestClient/LoggingHandler.cs b/Src/Notion.Client/RestClient/LoggingHandler.cs
@@ -0,0 +1,29 @@
+using System;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Notion.Client
+{
+    public class LoggingHandler : DelegatingHandler
+    {
+        protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
+        {
+            Log.Trace("Request: {request}", request);
+
+            try
+            {
+                var response = await base.SendAsync(request, cancellationToken);
+
+                Log.Trace("Response: {response}", response);
+
+                return response;
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, "Failed to get response: {exception}", ex);
+                throw;
+            }
+        }
+    }
+}
diff --git a/Src/Notion.Client/RestClient/RestClient.cs b/Src/Notion.Client/RestClient/RestClient.cs
@@ -153,7 +153,8 @@ private HttpClient EnsureHttpClient()
         {
             if (_httpClient == null)
             {
-                _httpClient = new HttpClient();
+                var pipeline = new LoggingHandler() { InnerHandler = new HttpClientHandler() };
+                _httpClient = new HttpClient(pipeline);
                 _httpClient.BaseAddress = new Uri(_options.BaseUrl);
             }
 

diff --git a/docs/README.md b/docs/README.md
@@ -87,6 +87,30 @@ var complexFiler = new CompoundFilter(
   - [x] Retrieve your token's bot user
 - [x] Search
 
+## Enable internal logs
+The library make use of `ILoggerFactory` interface exposed by `Microsoft.Extensions.Logging`. Which allow you to have ability to enable the internal logs when developing application to get additional information.
+
+To enable logging you need to add the below code at startup of the application.
+
+```csharp
+// pass the ILoggerFactory instance
+NotionClientLogging.ConfigureLogger(logger);
+
+```
+
+You can set the LogLevel in config file.
+```json
+{
+  "Logging": {
+    "LogLevel": {
+      "Notion.Client": "Trace"
+    }
+  }
+}
+```
+
+You can also refer `examples/list-users` example.
+
 ## Contribution Guideline
 
 Hello! Thank you for choosing to help contribute to this open source library. There are many ways you can contribute and help is always welcome. You can read the detailed [Contribution Guideline](https://github.com/notion-dotnet/notion-sdk-net/blob/main/CONTRIBUTING.md) defined here - we will continue to improve it.
diff --git a/examples/list-users/Program.cs b/examples/list-users/Program.cs
@@ -1,6 +1,9 @@
 using System;
+using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Logging;
 using Notion.Client;
 
 namespace list_users
@@ -14,6 +17,19 @@ static async Task Main(string[] args)
                 AuthToken = "<Token>"
             });
 
+            var configuration = new ConfigurationBuilder()
+                .AddJsonFile(Directory.GetCurrentDirectory() + "/appsettings.json")
+                .Build();
+
+            var factory = LoggerFactory.Create(builder =>
+            {
+                builder.ClearProviders();
+                builder.AddConfiguration(configuration.GetSection("Logging"));
+                builder.AddConsole();
+            });
+
+            NotionClientLogging.ConfigureLogger(factory);
+
             var usersList = await client.Users.ListAsync();
 
             Console.WriteLine(usersList.Results.Count());

diff --git a/examples/list-users/appsettings.json b/examples/list-users/appsettings.json
@@ -0,0 +1,7 @@
+{
+    "Logging": {
+        "LogLevel": {
+            "Notion.Client": "Trace"
+        }
+    }
+}
diff --git a/examples/list-users/list-users.csproj b/examples/list-users/list-users.csproj
@@ -1,13 +1,16 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net5.0</TargetFramework>
-    <RootNamespace>list_users</RootNamespace>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <PackageReference Include="Notion.Net" Version="1.0.4"/>
-  </ItemGroup>
-
+	<PropertyGroup>
+		<OutputType>Exe</OutputType>
+		<TargetFramework>net5.0</TargetFramework>
+		<RootNamespace>list_users</RootNamespace>
+	</PropertyGroup>
+	<ItemGroup>
+		<!-- <PackageReference Include="Notion.Net" Version="1.0.4"/> -->
+		<ProjectReference Include="..\..\Src\Notion.Client\Notion.Client.csproj"/>
+	</ItemGroup>
+	<ItemGroup>
+		<PackageReference Include="Microsoft.Extensions.Logging" Version="5.0.0"/>
+		<PackageReference Include="Microsoft.Extensions.Logging.Console" Version="5.0.0"/>
+		<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="5.0.0"/>
+	</ItemGroup>
 </Project>