Add flushing log content to disk

Initially the file sink of Serilog didn't have the ability to flush to disk at specified intervals.
This was brough in a newer version (see serilog/serilog-sinks-file#20).

Author: mderriey

src/Tfs.Webhooks/Startup.cs

@@ -9,6 +9,7 @@ namespace Tfs.WebHooks
     using Owin;
     using Serilog;
     using Services;
+    using System;
     using System.Configuration;
     using System.Web.Http;
     using System.Web.Http.ExceptionHandling;
@@ -36,9 +37,19 @@ private static void ConfigureSerilog()
             var environment = ConfigurationManager.AppSettings["Environment"];
             var outputTemplate = "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} [{RequestId}] [{Level:u3}] {Message}{NewLine}{Exception}";
             var filePath = ConfigurationManager.AppSettings["LogFilePath"];
+
+            var flushToDiskIntervalInSeconds = 10;
+            if (int.TryParse(ConfigurationManager.AppSettings["LogFileFlushToDiskIntervalInSeconds"], out int configuredFlushToDiskIntervalInSeconds))
+            {
+                flushToDiskIntervalInSeconds = configuredFlushToDiskIntervalInSeconds;
+            }
+
             var loggerConfiguration = new LoggerConfiguration()
                 .Enrich.FromLogContext()
-                .WriteTo.File(filePath, outputTemplate: outputTemplate);
+                .WriteTo.File(
+                    filePath,
+                    outputTemplate: outputTemplate,
+                    flushToDiskInterval: TimeSpan.FromSeconds(flushToDiskIntervalInSeconds));
 
             Log.Logger = loggerConfiguration.CreateLogger();
         }

src/Tfs.Webhooks/Tfs.Webhooks.csproj

@@ -161,12 +161,10 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="Serilog, Version=2.0.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
-      <HintPath>..\packages\Serilog.2.1.0\lib\net45\Serilog.dll</HintPath>
-      <Private>True</Private>
+      <HintPath>..\packages\Serilog.2.3.0\lib\net45\Serilog.dll</HintPath>
     </Reference>
     <Reference Include="Serilog.Sinks.File, Version=2.0.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
-      <HintPath>..\packages\Serilog.Sinks.File.2.2.0\lib\net45\Serilog.Sinks.File.dll</HintPath>
-      <Private>True</Private>
+      <HintPath>..\packages\Serilog.Sinks.File.3.2.0\lib\net45\Serilog.Sinks.File.dll</HintPath>
     </Reference>
     <Reference Include="Serilog.Sinks.Trace, Version=2.0.0.0, Culture=neutral, PublicKeyToken=24c2f752a8e58a10, processorArchitecture=MSIL">
       <HintPath>..\packages\Serilog.Sinks.Trace.2.0.0\lib\net45\Serilog.Sinks.Trace.dll</HintPath>

src/Tfs.Webhooks/Web.config

@@ -11,6 +11,7 @@
     <add key="MS_WebHookDisableHttpsCheck" value="true" />
 
     <add key="LogFilePath" value="Tfs.WebHooks.log" />
+    <add key="LogFileFlushToDiskIntervalInSeconds" value="10" />
     <add key="TeamProjectCollectionUri" value="https://tfs/DefaultCollection" />
     <add key="PullRequestTargetBranchName" value="refs/heads/master" />
     <add key="PullRequestStatus" value="completed" />

src/Tfs.Webhooks/packages.config

@@ -21,8 +21,8 @@
   <package id="Microsoft.WindowsAzure.ConfigurationManager" version="3.2.1" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net452" />
   <package id="Owin" version="1.0" targetFramework="net452" />
-  <package id="Serilog" version="2.1.0" targetFramework="net452" />
-  <package id="Serilog.Sinks.File" version="2.2.0" targetFramework="net452" />
+  <package id="Serilog" version="2.3.0" targetFramework="net452" />
+  <package id="Serilog.Sinks.File" version="3.2.0" targetFramework="net452" />
   <package id="Serilog.Sinks.Trace" version="2.0.0" targetFramework="net452" />
   <package id="System.IdentityModel.Tokens.Jwt" version="5.0.0" targetFramework="net452" />
   <package id="WindowsAzure.ServiceBus" version="3.3.2" targetFramework="net452" />