From cda590e4f607172bdc771a132e4fe27bc6de4119 Mon Sep 17 00:00:00 2001
From: Miguel Veloso <mvelosop@gmail.com>
Date: Thu, 21 Feb 2019 17:57:42 +0000
Subject: [PATCH] Add Seq to ordering.backgroundtasks

---
 .../Ordering.BackgroundTasks.csproj           |  3 +
 .../Ordering.BackgroundTasks/Program.cs       | 76 ++++++++++++++-----
 .../Ordering.BackgroundTasks/appsettings.json | 18 ++---
 3 files changed, 70 insertions(+), 27 deletions(-)

diff --git a/src/Services/Ordering/Ordering.BackgroundTasks/Ordering.BackgroundTasks.csproj b/src/Services/Ordering/Ordering.BackgroundTasks/Ordering.BackgroundTasks.csproj
index b757cada9..430db2438 100644
--- a/src/Services/Ordering/Ordering.BackgroundTasks/Ordering.BackgroundTasks.csproj
+++ b/src/Services/Ordering/Ordering.BackgroundTasks/Ordering.BackgroundTasks.csproj
@@ -24,7 +24,10 @@
     <PackageReference Include="Microsoft.AspNetCore.HealthChecks" Version="1.0.0" />
     <PackageReference Include="AspNetCore.HealthChecks.SqlServer" Version="2.2.0" />
     <PackageReference Include="Serilog.AspNetCore" Version="2.1.1" />
+    <PackageReference Include="Serilog.Enrichers.Environment" Version="2.1.2" />
+    <PackageReference Include="Serilog.Settings.Configuration" Version="3.0.1" />
     <PackageReference Include="Serilog.Sinks.Console" Version="3.1.1" />
+    <PackageReference Include="Serilog.Sinks.Seq" Version="4.0.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/Services/Ordering/Ordering.BackgroundTasks/Program.cs b/src/Services/Ordering/Ordering.BackgroundTasks/Program.cs
index 3c78efa10..994cb2a4a 100644
--- a/src/Services/Ordering/Ordering.BackgroundTasks/Program.cs
+++ b/src/Services/Ordering/Ordering.BackgroundTasks/Program.cs
@@ -1,33 +1,75 @@
 using Microsoft.AspNetCore;
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 using Serilog;
+using System;
+using System.IO;
 
 namespace Ordering.BackgroundTasks
 {
     public class Program
     {
-        public static void Main(string[] args)
+        public static readonly string AppName = typeof(Program).Namespace;
+        public static readonly string ShortAppName = AppName.Substring(AppName.LastIndexOf('.', AppName.LastIndexOf('.') - 1) + 1);
+
+        public static int Main(string[] args)
         {
-            BuildWebHost(args).Run();
+            var configuration = GetConfiguration();
+
+            Log.Logger = CreateSerilogLogger(configuration);
+
+            try
+            {
+                Log.Information("Configuring web host ({Application})...", AppName);
+                var host = BuildWebHost(configuration, args);
+
+                Log.Information("Starting web host ({Application})...", AppName);
+                host.Run();
+
+                return 0;
+            }
+            catch (Exception ex)
+            {
+                Log.Fatal(ex, "Program terminated unexpectedly ({Application})!", AppName);
+                return 1;
+            }
+            finally
+            {
+                Log.CloseAndFlush();
+            }
         }
 
-        public static IWebHost BuildWebHost(string[] args) =>
+        private static IWebHost BuildWebHost(IConfiguration configuration, string[] args) =>
             WebHost.CreateDefaultBuilder(args)
-                .UseStartup<Startup>()                
-                .ConfigureLogging((hostingContext, builder) =>
-                {
-                    builder.AddConfiguration(hostingContext.Configuration.GetSection("Logging"));
-                    builder.AddDebug();
-                    builder.AddConsole();
-                })
-                .UseSerilog((builderContext, config) =>
-                {
-                    config
-                        .MinimumLevel.Information()
-                        .Enrich.FromLogContext()
-                        .WriteTo.Console();
-                })
+                .CaptureStartupErrors(false)
+                .UseStartup<Startup>()
+                .UseConfiguration(configuration)
+                .UseSerilog()
                 .Build();
+
+        private static Serilog.ILogger CreateSerilogLogger(IConfiguration configuration)
+        {
+            var seqServerUrl = configuration["Serilog:SeqServerUrl"];
+
+            return new LoggerConfiguration()
+                .MinimumLevel.Verbose()
+                .Enrich.WithProperty("Application", AppName)
+                .Enrich.FromLogContext()
+                .WriteTo.Console()
+                .WriteTo.Seq(string.IsNullOrWhiteSpace(seqServerUrl) ? "http://seq" : seqServerUrl)
+                .ReadFrom.Configuration(configuration)
+                .CreateLogger();
+        }
+
+        private static IConfiguration GetConfiguration()
+        {
+            var builder = new ConfigurationBuilder()
+                .SetBasePath(Directory.GetCurrentDirectory())
+                .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
+                .AddEnvironmentVariables();
+
+            return builder.Build();
+        }
     }
 }
diff --git a/src/Services/Ordering/Ordering.BackgroundTasks/appsettings.json b/src/Services/Ordering/Ordering.BackgroundTasks/appsettings.json
index fd26645ab..3697c53a5 100644
--- a/src/Services/Ordering/Ordering.BackgroundTasks/appsettings.json
+++ b/src/Services/Ordering/Ordering.BackgroundTasks/appsettings.json
@@ -1,15 +1,13 @@
 {
   "ConnectionString": "Server=tcp:127.0.0.1,5433;Database=Microsoft.eShopOnContainers.Services.OrderingDb;User Id=sa;Password=Pass@word;",
-  "Logging": {
-    "IncludeScopes": false,
-    "Debug": {
-      "LogLevel": {
-        "Default": "Debug"
-      }
-    },
-    "Console": {
-      "LogLevel": {
-        "Default": "Debug"
+  "Serilog": {
+    "SeqServerUrl": null,
+    "MinimumLevel": {
+      "Default": "Information",
+      "Override": {
+        "Microsoft": "Warning",
+        "Microsoft.eShopOnContainers": "Information",
+        "System": "Warning"
       }
     }
   },