Merge pull request #952 from dotnet-architecture/features/add-seq-sink

Add Seq sink for Serilog and sample traces

.gitignore

@@ -26,7 +26,7 @@ bld/
 # Visual Studio 2015 cache/options directory
 .vs/
 
-# Files created by bundling and minification on startup
+# .js files created on build:
 src/Web/WebMVC/wwwroot/js/site*
 
 # Uncomment if you have tasks that create the project's static files in wwwroot

docker-compose.override.yml

@@ -7,6 +7,12 @@ version: '3.4'
 # An external IP or DNS name has to be used (instead localhost and the 10.0.75.1 IP) when testing the Web apps and the Xamarin apps from remote machines/devices using the same WiFi, for instance.
 
 services:
+  seq:
+    environment:
+      - ACCEPT_EULA=Y
+    ports:
+      - "5340:80"
+
   sql.data:
     environment:
       - SA_PASSWORD=Pass@word

docker-compose.yml

@@ -1,6 +1,9 @@
 version: '3.4'
 
 services:
+  seq:
+    image: datalust/seq:latest
+
   sql.data:
     image: microsoft/mssql-server-linux:2017-latest
 

src/ApiGateways/Mobile.Bff.Shopping/aggregator/Startup.cs

@@ -57,7 +57,7 @@ namespace Microsoft.eShopOnContainers.Mobile.Shopping.HttpAggregator
 
             if (!string.IsNullOrEmpty(pathBase))
             {
-                loggerFactory.CreateLogger("init").LogDebug($"Using PATH BASE '{pathBase}'");
+                loggerFactory.CreateLogger<Startup>().LogDebug("Using PATH BASE '{pathBase}'", pathBase);
                 app.UsePathBase(pathBase);
             }
 

src/ApiGateways/Web.Bff.Shopping/aggregator/Startup.cs

@@ -57,7 +57,7 @@ namespace Microsoft.eShopOnContainers.Web.Shopping.HttpAggregator
             var pathBase = Configuration["PATH_BASE"];
             if (!string.IsNullOrEmpty(pathBase))
             {
-                loggerFactory.CreateLogger("init").LogDebug($"Using PATH BASE '{pathBase}'");
+                loggerFactory.CreateLogger<Startup>().LogDebug("Using PATH BASE '{pathBase}'", pathBase);
                 app.UsePathBase(pathBase);
             }
 

src/BuildingBlocks/EventBus/EventBusRabbitMQ/DefaultRabbitMQPersisterConnection.cs

@@ -72,7 +72,7 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusRabbitMQ
                     .Or<BrokerUnreachableException>()
                     .WaitAndRetry(_retryCount, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)), (ex, time) =>
                     {
-                        _logger.LogWarning(ex.ToString());
+                        _logger.LogWarning(ex, "RabbitMQ Client could not connect after {TimeOut}s ({ExceptionMessage})", $"{time.TotalSeconds:n1}", ex.Message);
                     }
                 );
 
@@ -88,7 +88,7 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusRabbitMQ
                     _connection.CallbackException += OnCallbackException;
                     _connection.ConnectionBlocked += OnConnectionBlocked;
 
-                    _logger.LogInformation($"RabbitMQ persistent connection acquired a connection {_connection.Endpoint.HostName} and is subscribed to failure events");
+                    _logger.LogInformation("RabbitMQ Client acquired a persistent connection to '{HostName}' and is subscribed to failure events", _connection.Endpoint.HostName);
 
                     return true;
                 }

src/BuildingBlocks/EventBus/EventBusRabbitMQ/EventBusRabbitMQ.cs

@@ -76,7 +76,7 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusRabbitMQ
                 .Or<SocketException>()
                 .WaitAndRetry(_retryCount, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)), (ex, time) =>
                 {
-                    _logger.LogWarning(ex.ToString());
+                    _logger.LogWarning(ex, "Could not publish event: {EventId} after {Timeout}s ({ExceptionMessage})", @event.Id, $"{time.TotalSeconds:n1}", ex.Message);
                 });
 
             using (var channel = _persistentConnection.CreateModel())

src/BuildingBlocks/EventBus/EventBusServiceBus/EventBusServiceBus.cs

@@ -83,7 +83,7 @@
                 }
                 catch (ServiceBusException)
                 {
-                    _logger.LogInformation($"The messaging entity {eventName} already exists.");
+                    _logger.LogWarning("The messaging entity {eventName} already exists.", eventName);
                 }
             }
 
@@ -105,7 +105,7 @@
             }
             catch (MessagingEntityNotFoundException)
             {
-                _logger.LogInformation($"The messaging entity {eventName} Could not be found.");
+                _logger.LogWarning("The messaging entity {eventName} Could not be found.", eventName);
             }
 
             _subsManager.RemoveSubscription<T, TH>();
@@ -194,7 +194,7 @@
             }
             catch (MessagingEntityNotFoundException)
             {
-                _logger.LogInformation($"The messaging entity { RuleDescription.DefaultRuleName } Could not be found.");
+                _logger.LogWarning("The messaging entity {DefaultRuleName} Could not be found.", RuleDescription.DefaultRuleName);
             }
         }
     }

src/BuildingBlocks/WebHostCustomization/WebHost.Customization/WebHostExtensions.cs

@@ -32,7 +32,7 @@ namespace Microsoft.AspNetCore.Hosting
 
                 try
                 {
-                    logger.LogInformation($"Migrating database associated with context {typeof(TContext).Name}");
+                    logger.LogInformation("Migrating database associated with context {DbContextName}", typeof(TContext).Name);
 
                     if (underK8s)
                     {
@@ -55,11 +55,11 @@ namespace Microsoft.AspNetCore.Hosting
                         retry.Execute(() => InvokeSeeder(seeder, context, services));
                     }
 
-                    logger.LogInformation($"Migrated database associated with context {typeof(TContext).Name}");
+                    logger.LogInformation("Migrated database associated with context {DbContextName}", typeof(TContext).Name);
                 }
                 catch (Exception ex)
                 {
-                    logger.LogError(ex, $"An error occurred while migrating the database used on context {typeof(TContext).Name}");
+                    logger.LogError(ex, "An error occurred while migrating the database used on context {DbContextName}", typeof(TContext).Name);
                     if (underK8s)
                     {
                         throw;          // Rethrow under k8s because we rely on k8s to re-run the pod

src/Services/Basket/Basket.API/Basket.API.csproj

@@ -13,25 +13,28 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
-    <PackageReference Include="AspNetCore.HealthChecks.Redis" Version="2.2.0" />
     <PackageReference Include="AspNetCore.HealthChecks.AzureServiceBus" Version="2.2.0" />
     <PackageReference Include="AspNetCore.HealthChecks.Rabbitmq" Version="2.2.0" />
+    <PackageReference Include="AspNetCore.HealthChecks.Redis" Version="2.2.0" />
+    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
+    <PackageReference Include="Autofac.Extensions.DependencyInjection" Version="4.2.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.2.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.DependencyCollector" Version="2.6.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.Kubernetes" Version="1.0.2" />
     <PackageReference Include="Microsoft.ApplicationInsights.ServiceFabric" Version="2.2.2" />
+    <PackageReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Microsoft.AspNetCore.Diagnostics.HealthChecks" Version="2.2.0" />
+    <PackageReference Include="Microsoft.AspNetCore.HealthChecks" Version="1.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.AzureKeyVault" Version="2.1.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.AzureKeyVault" Version="2.2.0" />
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.2.0" />
-    <PackageReference Include="Autofac.Extensions.DependencyInjection" Version="4.2.1" />
-    <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" Version="2.2.0" />
-    <PackageReference Include="StackExchange.Redis.StrongName" Version="1.2.6" />
     <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" 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" />
+    <PackageReference Include="StackExchange.Redis.StrongName" Version="1.2.6" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="3.0.0" />
-    <PackageReference Include="Microsoft.AspNetCore.HealthChecks" Version="1.0.0" />
   </ItemGroup>
 
   <ItemGroup>

src/Services/Basket/Basket.API/Controllers/BasketController.cs

@@ -5,6 +5,8 @@ using Microsoft.AspNetCore.Mvc;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
 using Microsoft.eShopOnContainers.Services.Basket.API.Model;
 using Microsoft.eShopOnContainers.Services.Basket.API.Services;
+using Microsoft.Extensions.Logging;
+using Serilog.Context;
 using System;
 using System.Net;
 using System.Threading.Tasks;
@@ -19,9 +21,15 @@ namespace Microsoft.eShopOnContainers.Services.Basket.API.Controllers
         private readonly IBasketRepository _repository;
         private readonly IIdentityService _identityService;
         private readonly IEventBus _eventBus;
+        private readonly ILogger<BasketController> _logger;
 
-        public BasketController(IBasketRepository repository, IIdentityService identityService, IEventBus eventBus)
+        public BasketController(
+            ILogger<BasketController> logger,
+            IBasketRepository repository,
+            IIdentityService identityService,
+            IEventBus eventBus)
         {
+            _logger = logger;
             _repository = repository;
             _identityService = identityService;
             _eventBus = eventBus;
@@ -50,7 +58,7 @@ namespace Microsoft.eShopOnContainers.Services.Basket.API.Controllers
         public async Task<ActionResult> CheckoutAsync([FromBody]BasketCheckout basketCheckout, [FromHeader(Name = "x-requestid")] string requestId)
         {
             var userId = _identityService.GetUserIdentity();
-            
+
             basketCheckout.RequestId = (Guid.TryParse(requestId, out Guid guid) && guid != Guid.Empty) ?
                 guid : basketCheckout.RequestId;
 
@@ -70,7 +78,18 @@ namespace Microsoft.eShopOnContainers.Services.Basket.API.Controllers
             // Once basket is checkout, sends an integration event to
             // ordering.api to convert basket to order and proceeds with
             // order creation process
-            _eventBus.Publish(eventMessage);
+            try
+            {
+                _logger.LogInformation("----- Publishing integration event: {IntegrationEventId} from {AppName} - ({@IntegrationEvent})", eventMessage.Id, Program.AppName, eventMessage);
+
+                _eventBus.Publish(eventMessage);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "ERROR Publishing integration event: {IntegrationEventId} from {AppName}", eventMessage.Id, Program.AppName);
+
+                throw;
+            }
 
             return Accepted();
         }

src/Services/Basket/Basket.API/IntegrationEvents/EventHandling/OrderStartedIntegrationEventHandler.cs

@@ -1,6 +1,9 @@
 using Basket.API.IntegrationEvents.Events;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
+using Microsoft.eShopOnContainers.Services.Basket.API;
 using Microsoft.eShopOnContainers.Services.Basket.API.Model;
+using Microsoft.Extensions.Logging;
+using Serilog.Context;
 using System;
 using System.Threading.Tasks;
 
@@ -9,15 +12,24 @@ namespace Basket.API.IntegrationEvents.EventHandling
     public class OrderStartedIntegrationEventHandler : IIntegrationEventHandler<OrderStartedIntegrationEvent>
     {
         private readonly IBasketRepository _repository;
+        private readonly ILogger<OrderStartedIntegrationEventHandler> _logger;
 
-        public OrderStartedIntegrationEventHandler(IBasketRepository repository)
+        public OrderStartedIntegrationEventHandler(
+            IBasketRepository repository,
+            ILogger<OrderStartedIntegrationEventHandler> logger)
         {
             _repository = repository ?? throw new ArgumentNullException(nameof(repository));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
         public async Task Handle(OrderStartedIntegrationEvent @event)
         {
-            await _repository.DeleteBasketAsync(@event.UserId.ToString());
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+            {
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+                await _repository.DeleteBasketAsync(@event.UserId.ToString());
+            }
         }
     }
 }

src/Services/Basket/Basket.API/IntegrationEvents/EventHandling/ProductPriceChangedIntegrationEventHandler.cs

@@ -1,6 +1,8 @@
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
 using Microsoft.eShopOnContainers.Services.Basket.API.IntegrationEvents.Events;
 using Microsoft.eShopOnContainers.Services.Basket.API.Model;
+using Microsoft.Extensions.Logging;
+using Serilog.Context;
 using System;
 using System.Linq;
 using System.Threading.Tasks;
@@ -9,22 +11,31 @@ namespace Microsoft.eShopOnContainers.Services.Basket.API.IntegrationEvents.Even
 {
     public class ProductPriceChangedIntegrationEventHandler : IIntegrationEventHandler<ProductPriceChangedIntegrationEvent>
     {
+        private readonly ILogger<ProductPriceChangedIntegrationEventHandler> _logger;
         private readonly IBasketRepository _repository;
 
-        public ProductPriceChangedIntegrationEventHandler(IBasketRepository repository)
+        public ProductPriceChangedIntegrationEventHandler(
+            ILogger<ProductPriceChangedIntegrationEventHandler> logger,
+            IBasketRepository repository)
         {
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
             _repository = repository ?? throw new ArgumentNullException(nameof(repository));
         }
 
         public async Task Handle(ProductPriceChangedIntegrationEvent @event)
         {
-            var userIds = _repository.GetUsers();
-            
-            foreach (var id in userIds)
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
             {
-                var basket = await _repository.GetBasketAsync(id);
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
 
-                await UpdatePriceInBasketItems(@event.ProductId, @event.NewPrice, @event.OldPrice, basket);                      
+                var userIds = _repository.GetUsers();
+
+                foreach (var id in userIds)
+                {
+                    var basket = await _repository.GetBasketAsync(id);
+
+                    await UpdatePriceInBasketItems(@event.ProductId, @event.NewPrice, @event.OldPrice, basket);
+                }
             }
         }
 
@@ -35,17 +46,19 @@ namespace Microsoft.eShopOnContainers.Services.Basket.API.IntegrationEvents.Even
 
             if (itemsToUpdate != null)
             {
+                _logger.LogInformation("----- ProductPriceChangedIntegrationEventHandler - Updating items in basket for user: {BuyerId} ({@Items})", basket.BuyerId, itemsToUpdate);
+
                 foreach (var item in itemsToUpdate)
                 {
-                    if(item.UnitPrice == oldPrice)
-                    { 
+                    if (item.UnitPrice == oldPrice)
+                    {
                         var originalPrice = item.UnitPrice;
                         item.UnitPrice = newPrice;
                         item.OldUnitPrice = originalPrice;
                     }
                 }
                 await _repository.UpdateBasketAsync(basket);
-            }         
+            }
         }
     }
 }

src/Services/Basket/Basket.API/Program.cs

@@ -12,52 +12,80 @@ namespace Microsoft.eShopOnContainers.Services.Basket.API
 {
     public class Program
     {
-        public static void Main(string[] args)
+        public static readonly string Namespace = typeof(Program).Namespace;
+        public static readonly string AppName = Namespace.Substring(Namespace.LastIndexOf('.', Namespace.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 ({ApplicationContext})...", AppName);
+                var host = BuildWebHost(configuration, args);
+
+                Log.Information("Starting web host ({ApplicationContext})...", AppName);
+                host.Run();
+
+                return 0;
+            }
+            catch (Exception ex)
+            {
+                Log.Fatal(ex, "Program terminated unexpectedly ({ApplicationContext})!", AppName);
+                return 1;
+            }
+            finally
+            {
+                Log.CloseAndFlush();
+            }
         }
 
-        public static IWebHost BuildWebHost(string[] args) =>
+        private static IWebHost BuildWebHost(IConfiguration configuration, string[] args) =>
             WebHost.CreateDefaultBuilder(args)
+                .CaptureStartupErrors(false)
                 .UseFailing(options =>
-                {
-                    options.ConfigPath = "/Failing";
-                })
-                .UseContentRoot(Directory.GetCurrentDirectory())
+                    options.ConfigPath = "/Failing")
                 .UseStartup<Startup>()
-                .ConfigureAppConfiguration((builderContext, config) =>
-                {
-                    var builtConfig = config.Build();
-
-                    var configurationBuilder = new ConfigurationBuilder();
-
-                    if (Convert.ToBoolean(builtConfig["UseVault"]))
-                    {
-                        configurationBuilder.AddAzureKeyVault(
-                            $"https://{builtConfig["Vault:Name"]}.vault.azure.net/",
-                            builtConfig["Vault:ClientId"],
-                            builtConfig["Vault:ClientSecret"]);
-                    }
-
-                    configurationBuilder.AddEnvironmentVariables();
-
-                    config.AddConfiguration(configurationBuilder.Build());
-                })
-                .ConfigureLogging((hostingContext, builder) =>
-                {
-                    builder.AddConfiguration(hostingContext.Configuration.GetSection("Logging"));
-                    builder.AddConsole();
-                    builder.AddDebug();
-                    builder.AddAzureWebAppDiagnostics();
-                })
-                .UseSerilog((builderContext, config) =>
-                {
-                    config
-                        .MinimumLevel.Information()
-                        .Enrich.FromLogContext()
-                        .WriteTo.Console();
-                })
                 .UseApplicationInsights()
+                .UseContentRoot(Directory.GetCurrentDirectory())
+                .UseConfiguration(configuration)
+                .UseSerilog()
                 .Build();
+
+        private static Serilog.ILogger CreateSerilogLogger(IConfiguration configuration)
+        {
+            var seqServerUrl = configuration["Serilog:SeqServerUrl"];
+
+            return new LoggerConfiguration()
+                .MinimumLevel.Verbose()
+                .Enrich.WithProperty("ApplicationContext", 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();
+
+            var config = builder.Build();
+
+            if (config.GetValue<bool>("UseVault", false))
+            {
+                builder.AddAzureKeyVault(
+                    $"https://{config["Vault:Name"]}.vault.azure.net/",
+                    config["Vault:ClientId"],
+                    config["Vault:ClientSecret"]);
+            }
+
+            return builder.Build();
+        }
     }
 }

src/Services/Basket/Basket.API/Startup.cs

@@ -50,7 +50,7 @@ namespace Microsoft.eShopOnContainers.Services.Basket.API
         // This method gets called by the runtime. Use this method to add services to the container.
         public IServiceProvider ConfigureServices(IServiceCollection services)
         {
-            RegisterAppInsights(services);            
+            RegisterAppInsights(services);
 
             // Add framework services.
             services.AddMvc(options =>
@@ -66,7 +66,7 @@ namespace Microsoft.eShopOnContainers.Services.Basket.API
 
             services.AddCustomHealthCheck(Configuration);
 
-            services.Configure<BasketSettings>(Configuration);            
+            services.Configure<BasketSettings>(Configuration);
 
             //By connecting here we are making sure that our service
             //cannot start until redis is ready. This might slow down startup,
@@ -179,9 +179,10 @@ namespace Microsoft.eShopOnContainers.Services.Basket.API
     
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
-        public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory)
+        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
         {
-            loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
+            //loggerFactory.AddAzureWebAppDiagnostics();
+            //loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
 
             var pathBase = Configuration["PATH_BASE"];
             if (!string.IsNullOrEmpty(pathBase))

src/Services/Basket/Basket.API/appsettings.json

@@ -1,10 +1,13 @@
 {
-  "Logging": {
-    "IncludeScopes": false,
-    "LogLevel": {
-      "Default": "Debug",
-      "System": "Information",
-      "Microsoft": "Information"
+  "Serilog": {
+    "SeqServerUrl": null,
+    "MinimumLevel": {
+      "Default": "Information",
+      "Override": {
+        "Microsoft": "Warning",
+        "Microsoft.eShopOnContainers": "Information",
+        "System": "Warning"
+      }
     }
   },
   "IdentityUrl": "http://localhost:5105",

src/Services/Basket/Basket.UnitTests/Application/BasketWebApiTest.cs

@@ -5,6 +5,7 @@ using Microsoft.AspNetCore.Mvc;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
 using Microsoft.eShopOnContainers.Services.Basket.API.Controllers;
 using Microsoft.eShopOnContainers.Services.Basket.API.Model;
+using Microsoft.Extensions.Logging;
 using Moq;
 using System;
 using System.Collections.Generic;
@@ -20,12 +21,14 @@ namespace UnitTest.Basket.Application
         private readonly Mock<IBasketRepository> _basketRepositoryMock;
         private readonly Mock<IBasketIdentityService> _identityServiceMock;
         private readonly Mock<IEventBus> _serviceBusMock;
+        private readonly Mock<ILogger<BasketController>> _loggerMock;
 
         public BasketWebApiTest()
         {
             _basketRepositoryMock = new Mock<IBasketRepository>();
             _identityServiceMock = new Mock<IBasketIdentityService>();
             _serviceBusMock = new Mock<IEventBus>();
+            _loggerMock = new Mock<ILogger<BasketController>>();
         }
 
         [Fact]
@@ -43,7 +46,11 @@ namespace UnitTest.Basket.Application
 
             //Act
             var basketController = new BasketController(
-                _basketRepositoryMock.Object, _identityServiceMock.Object, _serviceBusMock.Object);
+                _loggerMock.Object,
+                _basketRepositoryMock.Object,
+                _identityServiceMock.Object,
+                _serviceBusMock.Object);
+
             var actionResult = await basketController.GetBasketByIdAsync(fakeCustomerId);
 
             //Assert
@@ -65,14 +72,17 @@ namespace UnitTest.Basket.Application
 
             //Act
             var basketController = new BasketController(
-                _basketRepositoryMock.Object, _identityServiceMock.Object, _serviceBusMock.Object);
+                _loggerMock.Object,
+                _basketRepositoryMock.Object,
+                _identityServiceMock.Object,
+                _serviceBusMock.Object);
 
             var actionResult = await basketController.UpdateBasketAsync(fakeCustomerBasket);
 
             //Assert
             Assert.Equal((actionResult.Result as OkObjectResult).StatusCode, (int)System.Net.HttpStatusCode.OK);
             Assert.Equal(((CustomerBasket)actionResult.Value).BuyerId, fakeCustomerId);
-        }        
+        }
 
         [Fact]
         public async Task Doing_Checkout_Without_Basket_Should_Return_Bad_Request()
@@ -84,7 +94,10 @@ namespace UnitTest.Basket.Application
 
             //Act
             var basketController = new BasketController(
-                _basketRepositoryMock.Object, _identityServiceMock.Object, _serviceBusMock.Object);
+                _loggerMock.Object,
+                _basketRepositoryMock.Object,
+                _identityServiceMock.Object,
+                _serviceBusMock.Object);
 
             var result = await basketController.CheckoutAsync(new BasketCheckout(), Guid.NewGuid().ToString()) as BadRequestResult;
             Assert.NotNull(result);
@@ -102,7 +115,10 @@ namespace UnitTest.Basket.Application
             _identityServiceMock.Setup(x => x.GetUserIdentity()).Returns(fakeCustomerId);
 
             var basketController = new BasketController(
-                _basketRepositoryMock.Object, _identityServiceMock.Object, _serviceBusMock.Object);
+                _loggerMock.Object,
+                _basketRepositoryMock.Object,
+                _identityServiceMock.Object,
+                _serviceBusMock.Object);
 
             basketController.ControllerContext = new ControllerContext()
             {
@@ -122,7 +138,7 @@ namespace UnitTest.Basket.Application
         }
 
         private CustomerBasket GetCustomerBasketFake(string fakeCustomerId)
-        {            
+        {
             return new CustomerBasket(fakeCustomerId)
             {
                 Items = new List<BasketItem>()

src/Services/Catalog/Catalog.API/Catalog.API.csproj

@@ -34,24 +34,25 @@
 
 
   <ItemGroup>
-    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
     <PackageReference Include="AspNetCore.HealthChecks.AzureServiceBus" Version="2.2.0" />
     <PackageReference Include="AspNetCore.HealthChecks.AzureStorage" Version="2.2.0" />
     <PackageReference Include="AspNetCore.HealthChecks.Rabbitmq" Version="2.2.0" />
     <PackageReference Include="AspNetCore.HealthChecks.SqlServer" Version="2.2.0" />
+    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
     <PackageReference Include="Autofac.Extensions.DependencyInjection" Version="4.2.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.2.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.DependencyCollector" Version="2.6.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.Kubernetes" Version="1.0.2" />
     <PackageReference Include="Microsoft.ApplicationInsights.ServiceFabric" Version="2.2.2" />
+    <PackageReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Microsoft.AspNetCore.HealthChecks" Version="1.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.AzureKeyVault" Version="2.2.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" Version="2.2.0" />
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.2.0" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.AzureKeyVault" Version="2.2.0" />
-    <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" 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" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="3.0.0" />
     <PackageReference Include="System.IO.Compression.ZipFile" Version="4.3.0" />
   </ItemGroup>

src/Services/Catalog/Catalog.API/Infrastructure/CatalogContextSeed.cs

@@ -76,14 +76,14 @@
             }
             catch (Exception ex)
             {
-                logger.LogError(ex.Message);
+                logger.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message);
                 return GetPreconfiguredCatalogBrands();
             }
 
             return File.ReadAllLines(csvFileCatalogBrands)
                                         .Skip(1) // skip header row
                                         .SelectTry(x => CreateCatalogBrand(x))
-                                        .OnCaughtException(ex => { logger.LogError(ex.Message); return null; })
+                                        .OnCaughtException(ex => { logger.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message); return null; })
                                         .Where(x => x != null);
         }
 
@@ -131,14 +131,14 @@
             }
             catch (Exception ex)
             {
-                logger.LogError(ex.Message);
+                logger.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message);
                 return GetPreconfiguredCatalogTypes();
             }
 
             return File.ReadAllLines(csvFileCatalogTypes)
                                         .Skip(1) // skip header row
                                         .SelectTry(x => CreateCatalogType(x))
-                                        .OnCaughtException(ex => { logger.LogError(ex.Message); return null; })
+                                        .OnCaughtException(ex => { logger.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message); return null; })
                                         .Where(x => x != null);
         }
 
@@ -186,7 +186,7 @@
             }
             catch (Exception ex)
             {
-                logger.LogError(ex.Message);
+                logger.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message);
                 return GetPreconfiguredItems();
             }
 
@@ -197,7 +197,7 @@
                         .Skip(1) // skip header row
                         .Select(row => Regex.Split(row, ",(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)") )
                         .SelectTry(column => CreateCatalogItem(column, csvheaders, catalogTypeIdLookup, catalogBrandIdLookup))
-                        .OnCaughtException(ex => { logger.LogError(ex.Message); return null; })
+                        .OnCaughtException(ex => { logger.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message); return null; })
                         .Where(x => x != null);
         }
 
@@ -377,7 +377,7 @@
                     sleepDurationProvider: retry => TimeSpan.FromSeconds(5),
                     onRetry: (exception, timeSpan, retry, ctx) =>
                     {
-                        logger.LogTrace($"[{prefix}] Exception {exception.GetType().Name} with message ${exception.Message} detected on attempt {retry} of {retries}");
+                        logger.LogWarning(exception, "[{prefix}] Exception {ExceptionType} with message {Message} detected on attempt {retry} of {retries}", prefix, exception.GetType().Name, exception.Message, retry, retries);
                     }
                 );
         }

src/Services/Catalog/Catalog.API/IntegrationEvents/CatalogIntegrationEventService.cs

@@ -4,7 +4,10 @@ using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Events;
 using Microsoft.eShopOnContainers.BuildingBlocks.IntegrationEventLogEF.Services;
 using Microsoft.eShopOnContainers.BuildingBlocks.IntegrationEventLogEF.Utilities;
+using Microsoft.eShopOnContainers.Services.Catalog.API;
 using Microsoft.eShopOnContainers.Services.Catalog.API.Infrastructure;
+using Microsoft.Extensions.Logging;
+using Serilog.Context;
 using System;
 using System.Data.Common;
 using System.Threading.Tasks;
@@ -17,10 +20,15 @@ namespace Catalog.API.IntegrationEvents
         private readonly IEventBus _eventBus;
         private readonly CatalogContext _catalogContext;
         private readonly IIntegrationEventLogService _eventLogService;
+        private readonly ILogger<CatalogIntegrationEventService> _logger;
 
-        public CatalogIntegrationEventService(IEventBus eventBus, CatalogContext catalogContext,
-        Func<DbConnection, IIntegrationEventLogService> integrationEventLogServiceFactory)
+        public CatalogIntegrationEventService(
+            ILogger<CatalogIntegrationEventService> logger,
+            IEventBus eventBus,
+            CatalogContext catalogContext,
+            Func<DbConnection, IIntegrationEventLogService> integrationEventLogServiceFactory)
         {
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
             _catalogContext = catalogContext ?? throw new ArgumentNullException(nameof(catalogContext));
             _integrationEventLogServiceFactory = integrationEventLogServiceFactory ?? throw new ArgumentNullException(nameof(integrationEventLogServiceFactory));
             _eventBus = eventBus ?? throw new ArgumentNullException(nameof(eventBus));
@@ -31,26 +39,31 @@ namespace Catalog.API.IntegrationEvents
         {
             try
             {
+                _logger.LogInformation("----- Publishing integration event: {IntegrationEventId_published} from {AppName} - ({@IntegrationEvent})", evt.Id, Program.AppName, evt);
+
                 await _eventLogService.MarkEventAsInProgressAsync(evt.Id);
                 _eventBus.Publish(evt);
                 await _eventLogService.MarkEventAsPublishedAsync(evt.Id);
             }
-            catch (Exception)
+            catch (Exception ex)
             {
+                _logger.LogError(ex, "ERROR Publishing integration event: {IntegrationEventId} from {AppName} - ({@IntegrationEvent})", evt.Id, Program.AppName, evt);
                 await _eventLogService.MarkEventAsFailedAsync(evt.Id);
-            }            
+            }
         }
 
         public async Task SaveEventAndCatalogContextChangesAsync(IntegrationEvent evt)
         {
+            _logger.LogInformation("----- CatalogIntegrationEventService - Saving changes and integrationEvent: {IntegrationEventId}", evt.Id);
+
             //Use of an EF Core resiliency strategy when using multiple DbContexts within an explicit BeginTransaction():
             //See: https://docs.microsoft.com/en-us/ef/core/miscellaneous/connection-resiliency            
-            await ResilientTransaction.New(_catalogContext)
-                .ExecuteAsync(async () => {
-                    // Achieving atomicity between original catalog database operation and the IntegrationEventLog thanks to a local transaction
-                    await _catalogContext.SaveChangesAsync();
-                    await _eventLogService.SaveEventAsync(evt, _catalogContext.Database.CurrentTransaction.GetDbTransaction());
-                });
+            await ResilientTransaction.New(_catalogContext).ExecuteAsync(async () =>
+            {
+                // Achieving atomicity between original catalog database operation and the IntegrationEventLog thanks to a local transaction
+                await _catalogContext.SaveChangesAsync();
+                await _eventLogService.SaveEventAsync(evt, _catalogContext.Database.CurrentTransaction.GetDbTransaction());
+            });
         }
     }
 }

src/Services/Catalog/Catalog.API/IntegrationEvents/EventHandling/OrderStatusChangedToAwaitingValidationIntegrationEventHandler.cs

@@ -8,39 +8,51 @@
     using System.Linq;
     using global::Catalog.API.IntegrationEvents;
     using IntegrationEvents.Events;
+    using Serilog.Context;
+    using Microsoft.Extensions.Logging;
 
     public class OrderStatusChangedToAwaitingValidationIntegrationEventHandler : 
         IIntegrationEventHandler<OrderStatusChangedToAwaitingValidationIntegrationEvent>
     {
         private readonly CatalogContext _catalogContext;
         private readonly ICatalogIntegrationEventService _catalogIntegrationEventService;
+        private readonly ILogger<OrderStatusChangedToAwaitingValidationIntegrationEventHandler> _logger;
 
-        public OrderStatusChangedToAwaitingValidationIntegrationEventHandler(CatalogContext catalogContext,
-            ICatalogIntegrationEventService catalogIntegrationEventService)
+        public OrderStatusChangedToAwaitingValidationIntegrationEventHandler(
+            CatalogContext catalogContext,
+            ICatalogIntegrationEventService catalogIntegrationEventService,
+            ILogger<OrderStatusChangedToAwaitingValidationIntegrationEventHandler> logger)
         {
             _catalogContext = catalogContext;
             _catalogIntegrationEventService = catalogIntegrationEventService;
+            _logger = logger ?? throw new System.ArgumentNullException(nameof(logger));
         }
 
-        public async Task Handle(OrderStatusChangedToAwaitingValidationIntegrationEvent command)
+        public async Task Handle(OrderStatusChangedToAwaitingValidationIntegrationEvent @event)
         {
-            var confirmedOrderStockItems = new List<ConfirmedOrderStockItem>();
-
-            foreach (var orderStockItem in command.OrderStockItems)
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
             {
-                var catalogItem = _catalogContext.CatalogItems.Find(orderStockItem.ProductId);
-                var hasStock = catalogItem.AvailableStock >= orderStockItem.Units;
-                var confirmedOrderStockItem = new ConfirmedOrderStockItem(catalogItem.Id, hasStock);
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
 
-                confirmedOrderStockItems.Add(confirmedOrderStockItem);
-            }
+                var confirmedOrderStockItems = new List<ConfirmedOrderStockItem>();
+
+                foreach (var orderStockItem in @event.OrderStockItems)
+                {
+                    var catalogItem = _catalogContext.CatalogItems.Find(orderStockItem.ProductId);
+                    var hasStock = catalogItem.AvailableStock >= orderStockItem.Units;
+                    var confirmedOrderStockItem = new ConfirmedOrderStockItem(catalogItem.Id, hasStock);
 
-            var confirmedIntegrationEvent = confirmedOrderStockItems.Any(c => !c.HasStock)
-                ? (IntegrationEvent) new OrderStockRejectedIntegrationEvent(command.OrderId, confirmedOrderStockItems)
-                : new OrderStockConfirmedIntegrationEvent(command.OrderId);
+                    confirmedOrderStockItems.Add(confirmedOrderStockItem);
+                }
 
-            await _catalogIntegrationEventService.SaveEventAndCatalogContextChangesAsync(confirmedIntegrationEvent);
-            await _catalogIntegrationEventService.PublishThroughEventBusAsync(confirmedIntegrationEvent);
+                var confirmedIntegrationEvent = confirmedOrderStockItems.Any(c => !c.HasStock)
+                    ? (IntegrationEvent)new OrderStockRejectedIntegrationEvent(@event.OrderId, confirmedOrderStockItems)
+                    : new OrderStockConfirmedIntegrationEvent(@event.OrderId);
+
+                await _catalogIntegrationEventService.SaveEventAndCatalogContextChangesAsync(confirmedIntegrationEvent);
+                await _catalogIntegrationEventService.PublishThroughEventBusAsync(confirmedIntegrationEvent);
+
+            }
         }
     }
 }

src/Services/Catalog/Catalog.API/IntegrationEvents/EventHandling/OrderStatusChangedToPaidIntegrationEventHandler.cs

@@ -4,28 +4,40 @@
     using System.Threading.Tasks;
     using Infrastructure;
     using Microsoft.eShopOnContainers.Services.Catalog.API.IntegrationEvents.Events;
+    using Microsoft.Extensions.Logging;
+    using Serilog.Context;
 
     public class OrderStatusChangedToPaidIntegrationEventHandler : 
         IIntegrationEventHandler<OrderStatusChangedToPaidIntegrationEvent>
     {
         private readonly CatalogContext _catalogContext;
+        private readonly ILogger<OrderStatusChangedToPaidIntegrationEventHandler> _logger;
 
-        public OrderStatusChangedToPaidIntegrationEventHandler(CatalogContext catalogContext)
+        public OrderStatusChangedToPaidIntegrationEventHandler(
+            CatalogContext catalogContext,
+            ILogger<OrderStatusChangedToPaidIntegrationEventHandler> logger)
         {
             _catalogContext = catalogContext;
+            _logger = logger ?? throw new System.ArgumentNullException(nameof(logger));
         }
 
-        public async Task Handle(OrderStatusChangedToPaidIntegrationEvent command)
+        public async Task Handle(OrderStatusChangedToPaidIntegrationEvent @event)
         {
-            //we're not blocking stock/inventory
-            foreach (var orderStockItem in command.OrderStockItems)
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
             {
-                var catalogItem = _catalogContext.CatalogItems.Find(orderStockItem.ProductId);
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
 
-                catalogItem.RemoveStock(orderStockItem.Units);
-            }
+                //we're not blocking stock/inventory
+                foreach (var orderStockItem in @event.OrderStockItems)
+                {
+                    var catalogItem = _catalogContext.CatalogItems.Find(orderStockItem.ProductId);
+
+                    catalogItem.RemoveStock(orderStockItem.Units);
+                }
 
-            await _catalogContext.SaveChangesAsync();
+                await _catalogContext.SaveChangesAsync();
+
+            }
         }
     }
 }

src/Services/Catalog/Catalog.API/Program.cs

@@ -9,66 +9,97 @@ using Microsoft.Extensions.Options;
 using Serilog;
 using System;
 using System.IO;
+
 namespace Microsoft.eShopOnContainers.Services.Catalog.API
 {
     public class Program
     {
-        public static void Main(string[] args)
+        public static readonly string Namespace = typeof(Program).Namespace;
+        public static readonly string AppName = Namespace.Substring(Namespace.LastIndexOf('.', Namespace.LastIndexOf('.') - 1) + 1);
+
+        public static int Main(string[] args)
         {
-            BuildWebHost(args)
-                .MigrateDbContext<CatalogContext>((context,services)=>
+            var configuration = GetConfiguration();
+
+            Log.Logger = CreateSerilogLogger(configuration);
+
+            try
+            {
+                Log.Information("Configuring web host ({ApplicationContext})...", AppName);
+                var host = BuildWebHost(configuration, args);
+
+                Log.Information("Applying migrations ({ApplicationContext})...", AppName);
+                host.MigrateDbContext<CatalogContext>((context, services) =>
                 {
                     var env = services.GetService<IHostingEnvironment>();
                     var settings = services.GetService<IOptions<CatalogSettings>>();
                     var logger = services.GetService<ILogger<CatalogContextSeed>>();
 
                     new CatalogContextSeed()
-                    .SeedAsync(context,env,settings,logger)
-                    .Wait();
-
+                        .SeedAsync(context, env, settings, logger)
+                        .Wait();
                 })
-                .MigrateDbContext<IntegrationEventLogContext>((_,__)=> { })
-                .Run();
+                .MigrateDbContext<IntegrationEventLogContext>((_, __) => { });
+
+                Log.Information("Starting web host ({ApplicationContext})...", AppName);
+                host.Run();
+
+                return 0;
+            }
+            catch (Exception ex)
+            {
+                Log.Fatal(ex, "Program terminated unexpectedly ({ApplicationContext})!", 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>()
+                .CaptureStartupErrors(false)
+                .UseStartup<Startup>()
                 .UseApplicationInsights()
                 .UseContentRoot(Directory.GetCurrentDirectory())
                 .UseWebRoot("Pics")
-                .ConfigureAppConfiguration((builderContext, config) =>
-                {
-                    var builtConfig = config.Build();
+                .UseConfiguration(configuration)
+                .UseSerilog()
+                .Build();
+
+        private static Serilog.ILogger CreateSerilogLogger(IConfiguration configuration)
+        {
+            var seqServerUrl = configuration["Serilog:SeqServerUrl"];
 
-                    var configurationBuilder = new ConfigurationBuilder();
+            return new LoggerConfiguration()
+                .MinimumLevel.Verbose()
+                .Enrich.WithProperty("ApplicationContext", AppName)
+                .Enrich.FromLogContext()
+                .WriteTo.Console()
+                .WriteTo.Seq(string.IsNullOrWhiteSpace(seqServerUrl) ? "http://seq" : seqServerUrl)
+                .ReadFrom.Configuration(configuration)
+                .CreateLogger();
+        }
 
-                    if (Convert.ToBoolean(builtConfig["UseVault"]))
-                    {
-                        configurationBuilder.AddAzureKeyVault(
-                            $"https://{builtConfig["Vault:Name"]}.vault.azure.net/",
-                            builtConfig["Vault:ClientId"],
-                            builtConfig["Vault:ClientSecret"]);
-                    }
+        private static IConfiguration GetConfiguration()
+        {
+            var builder = new ConfigurationBuilder()
+                .SetBasePath(Directory.GetCurrentDirectory())
+                .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
+                .AddEnvironmentVariables();
 
-                    configurationBuilder.AddEnvironmentVariables();
+            var config = builder.Build();
 
-                    config.AddConfiguration(configurationBuilder.Build());
-                })
-                .ConfigureLogging((hostingContext, builder) =>
-                {
-                    builder.AddConfiguration(hostingContext.Configuration.GetSection("Logging"));
-                    builder.AddConsole();
-                    builder.AddDebug();
-                    builder.AddAzureWebAppDiagnostics();
-                })
-                .UseSerilog((builderContext, config) =>
-                {
-                    config
-                        .MinimumLevel.Information()
-                        .Enrich.FromLogContext()
-                        .WriteTo.Console();
-                })
-                .Build();    
+            if (config.GetValue<bool>("UseVault", false))
+            {
+                builder.AddAzureKeyVault(
+                    $"https://{config["Vault:Name"]}.vault.azure.net/",
+                    config["Vault:ClientId"],
+                    config["Vault:ClientSecret"]);
+            }
+
+            return builder.Build();
+        }
     }
 }

src/Services/Catalog/Catalog.API/Properties/launchSettings.json

@@ -13,7 +13,10 @@
       "launchBrowser": true,
       "launchUrl": "/swagger",
       "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
+        "ConnectionString": "server=localhost,5433;Database=Microsoft.eShopOnContainers.Services.CatalogDb;User Id=sa;Password=Pass@word",
+        "ASPNETCORE_ENVIRONMENT": "Development",
+        "EventBusConnection": "localhost",
+        "Serilog:SeqServerUrl": "http://locahost:5340"
       }
     },
     "Microsoft.eShopOnContainers.Services.Catalog.API": {

src/Services/Catalog/Catalog.API/Startup.cs

@@ -60,17 +60,18 @@ namespace Microsoft.eShopOnContainers.Services.Catalog.API
 
         }
 
-        public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory)
+        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
         {
             //Configure logs
 
-            loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
+            //loggerFactory.AddAzureWebAppDiagnostics();
+            //loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
 
             var pathBase = Configuration["PATH_BASE"];
 
             if (!string.IsNullOrEmpty(pathBase))
             {
-                loggerFactory.CreateLogger("init").LogDebug($"Using PATH BASE '{pathBase}'");
+                loggerFactory.CreateLogger<Startup>().LogDebug("Using PATH BASE '{pathBase}'", pathBase);
                 app.UsePathBase(pathBase);
             }
 

src/Services/Catalog/Catalog.API/appsettings.json

@@ -2,12 +2,15 @@
   "ConnectionString": "Server=tcp:127.0.0.1,5433;Initial Catalog=Microsoft.eShopOnContainers.Services.CatalogDb;User Id=sa;Password=Pass@word",
   "PicBaseUrl": "http://localhost:5101/api/v1/catalog/items/[0]/pic/",
   "UseCustomizationData": false,
-  "Logging": {
-    "IncludeScopes": false,
-    "LogLevel": {
-      "Default": "Trace",
-      "System": "Information",
-      "Microsoft": "Information"
+  "Serilog": {
+    "SeqServerUrl": null,
+    "MinimumLevel": {
+      "Default": "Information",
+      "Override": {
+        "Microsoft": "Warning",
+        "Microsoft.eShopOnContainers": "Information",
+        "System": "Warning"
+      }
     }
   },
   "AzureServiceBusEnabled": false,

src/Services/Catalog/Catalog.API/web.config

@@ -2,8 +2,10 @@
 <configuration>
   <system.webServer>
     <handlers>
-      <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModule" resourceType="Unspecified" />
+      <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />
     </handlers>
-    <aspNetCore processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%" forwardWindowsAuthToken="false" stdoutLogEnabled="false" />
+    <aspNetCore processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%" forwardWindowsAuthToken="false" stdoutLogEnabled="false">
+      <environmentVariables />
+    </aspNetCore>
   </system.webServer>
 </configuration>

src/Services/Identity/Identity.API/Data/ApplicationDbContextSeed.cs

@@ -51,7 +51,7 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API.Data
                 {
                     retryForAvaiability++;
                     
-                    logger.LogError(ex.Message,$"There is an error migrating data for ApplicationDbContext");
+                    logger.LogError(ex, "EXCEPTION ERROR while migrating {DbContextName}", nameof(ApplicationDbContext));
 
                     await SeedAsync(context,env,logger,settings, retryForAvaiability);
                 }
@@ -80,7 +80,7 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API.Data
             }
             catch (Exception ex)
             {
-                logger.LogError(ex.Message);
+                logger.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message);
 
                 return GetDefaultUser();
             }
@@ -89,7 +89,7 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API.Data
                         .Skip(1) // skip header column
                         .Select(row => Regex.Split(row, ",(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)") )
                         .SelectTry(column => CreateApplicationUser(column, csvheaders))
-                        .OnCaughtException(ex => { logger.LogError(ex.Message); return null; })
+                        .OnCaughtException(ex => { logger.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message); return null; })
                         .Where(x => x != null)
                         .ToList();
 
@@ -199,7 +199,7 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API.Data
                 string imagesZipFile = Path.Combine(contentRootPath, "Setup", "images.zip");
                 if (!File.Exists(imagesZipFile))
                 {
-                    logger.LogError($" zip file '{imagesZipFile}' does not exists.");
+                    logger.LogError("Zip file '{ZipFileName}' does not exists.", imagesZipFile);
                     return;
                 }
 
@@ -221,14 +221,14 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API.Data
                         }
                         else
                         {
-                            logger.LogWarning($"Skip file '{entry.Name}' in zipfile '{imagesZipFile}'");
+                            logger.LogWarning("Skipped file '{FileName}' in zipfile '{ZipFileName}'", entry.Name, imagesZipFile);
                         }
                     }
                 }
             }
             catch (Exception ex)
             {
-                logger.LogError($"Exception in method GetPreconfiguredImages WebMVC. Exception Message={ex.Message}");
+                logger.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message); ;
             }
         }
     }

src/Services/Identity/Identity.API/Identity.API.csproj

@@ -13,25 +13,28 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.Diagnostics.HealthChecks" Version="2.2.0" />
-    <PackageReference Include="Microsoft.AspNetCore.HealthChecks" Version="1.0.0" />
-    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
     <PackageReference Include="AspNetCore.HealthChecks.SqlServer" Version="2.2.0" />
+    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
     <PackageReference Include="Autofac.Extensions.DependencyInjection" Version="4.2.1" />
+    <PackageReference Include="IdentityServer4.AspNetIdentity" Version="2.1.0" />
+    <PackageReference Include="IdentityServer4.EntityFramework" Version="2.1.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.2.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.DependencyCollector" Version="2.6.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.Kubernetes" Version="1.0.2" />
     <PackageReference Include="Microsoft.ApplicationInsights.ServiceFabric" Version="2.2.2" />
-    <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" Version="2.2.0" />
+    <PackageReference Include="Microsoft.AspNetCore.App" />
+    <PackageReference Include="Microsoft.AspNetCore.DataProtection.Redis" Version="2.2.0-preview2-35157" />
+    <PackageReference Include="Microsoft.AspNetCore.Diagnostics.HealthChecks" Version="2.2.0" />
+    <PackageReference Include="Microsoft.AspNetCore.HealthChecks" Version="1.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.AzureKeyVault" Version="2.2.0" />
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.2.0" />
-    <PackageReference Include="IdentityServer4.AspNetIdentity" Version="2.1.0" />
-    <PackageReference Include="IdentityServer4.EntityFramework" Version="2.1.1" />
+    <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" Version="2.2.0" />
+    <PackageReference Include="Microsoft.Web.LibraryManager.Build" Version="1.0.172" />
     <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="Microsoft.AspNetCore.DataProtection.Redis" Version="2.2.0-preview2-35157" />
+    <PackageReference Include="Serilog.Sinks.Seq" Version="4.0.0" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="3.0.0" />
-    <PackageReference Include="Microsoft.Web.LibraryManager.Build" Version="1.0.172" />
   </ItemGroup>
 
   <Target Name="PrepublishScript" BeforeTargets="PrepareForPublish">

src/Services/Identity/Identity.API/Program.cs

@@ -14,70 +14,99 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API
 {
     public class Program
     {
-        public static void Main(string[] args)
+        public static readonly string Namespace = typeof(Program).Namespace;
+        public static readonly string AppName = Namespace.Substring(Namespace.LastIndexOf('.', Namespace.LastIndexOf('.') - 1) + 1);
+
+        public static int Main(string[] args)
         {
-            BuildWebHost(args)
-                .MigrateDbContext<PersistedGrantDbContext>((_, __) => { })
-                .MigrateDbContext<ApplicationDbContext>((context, services) =>
-                {
-                    var env = services.GetService<IHostingEnvironment>();
-                    var logger = services.GetService<ILogger<ApplicationDbContextSeed>>();
-                    var settings = services.GetService<IOptions<AppSettings>>();
-
-                    new ApplicationDbContextSeed()
-                        .SeedAsync(context, env, logger, settings)
-                        .Wait();
-                })
-                .MigrateDbContext<ConfigurationDbContext>((context,services)=> 
-                {
-                    var configuration = services.GetService<IConfiguration>();
-
-                    new ConfigurationDbContextSeed()
-                        .SeedAsync(context, configuration)
-                        .Wait();
-                }).Run();
-        }
+            var configuration = GetConfiguration();
 
-        public static IWebHost BuildWebHost(string[] args) =>
-            WebHost.CreateDefaultBuilder(args)
-                .UseKestrel()
-                .UseContentRoot(Directory.GetCurrentDirectory())
-                .UseIISIntegration()
-                .UseStartup<Startup>()
-                .ConfigureAppConfiguration((builderContext, config) =>
-                {
-                    var builtConfig = config.Build();
+            Log.Logger = CreateSerilogLogger(configuration);
+
+            try
+            {
+                Log.Information("Configuring web host ({ApplicationContext})...", AppName);
+                var host = BuildWebHost(configuration, args);
 
-                    var configurationBuilder = new ConfigurationBuilder();
+                Log.Information("Applying migrations ({ApplicationContext})...", AppName);
+                host.MigrateDbContext<PersistedGrantDbContext>((_, __) => { })
+                    .MigrateDbContext<ApplicationDbContext>((context, services) =>
+                    {
+                        var env = services.GetService<IHostingEnvironment>();
+                        var logger = services.GetService<ILogger<ApplicationDbContextSeed>>();
+                        var settings = services.GetService<IOptions<AppSettings>>();
 
-                    if (Convert.ToBoolean(builtConfig["UseVault"]))
+                        new ApplicationDbContextSeed()
+                            .SeedAsync(context, env, logger, settings)
+                            .Wait();
+                    })
+                    .MigrateDbContext<ConfigurationDbContext>((context, services) =>
                     {
-                        configurationBuilder.AddAzureKeyVault(
-                            $"https://{builtConfig["Vault:Name"]}.vault.azure.net/",
-                            builtConfig["Vault:ClientId"],
-                            builtConfig["Vault:ClientSecret"]);
-                    }
-
-                    configurationBuilder.AddEnvironmentVariables();
-
-                    config.AddConfiguration(configurationBuilder.Build());
-                })
-                .ConfigureLogging((hostingContext, builder) =>
-                {
-                    builder.AddConfiguration(hostingContext.Configuration.GetSection("Logging"));
-                    builder.AddConsole();
-                    builder.AddDebug();
-                    builder.AddAzureWebAppDiagnostics();
-                })
+                        new ConfigurationDbContextSeed()
+                            .SeedAsync(context, configuration)
+                            .Wait();
+                    });
+
+                Log.Information("Starting web host ({ApplicationContext})...", AppName);
+                host.Run();
+
+                return 0;
+            }
+            catch (Exception ex)
+            {
+                Log.Fatal(ex, "Program terminated unexpectedly ({ApplicationContext})!", AppName);
+                return 1;
+            }
+            finally
+            {
+                Log.CloseAndFlush();
+            }
+        }
+
+        private static IWebHost BuildWebHost(IConfiguration configuration, string[] args) =>
+            WebHost.CreateDefaultBuilder(args)
+                .CaptureStartupErrors(false)
+                .UseStartup<Startup>()
                 .UseApplicationInsights()
-                .UseSerilog((builderContext, config) =>
-                {
-                    config
-                        .MinimumLevel.Information()
-                        .Enrich.FromLogContext()
-                        .WriteTo.Console();
-                })
+                .UseContentRoot(Directory.GetCurrentDirectory())
+                .UseConfiguration(configuration)
+                .UseSerilog()
                 .Build();
+
+        private static Serilog.ILogger CreateSerilogLogger(IConfiguration configuration)
+        {
+            var seqServerUrl = configuration["Serilog:SeqServerUrl"];
+
+            return new LoggerConfiguration()
+                .MinimumLevel.Verbose()
+                .Enrich.WithProperty("ApplicationContext", 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();
+
+            var config = builder.Build();
+
+            if (config.GetValue<bool>("UseVault", false))
+            {
+                builder.AddAzureKeyVault(
+                    $"https://{config["Vault:Name"]}.vault.azure.net/",
+                    config["Vault:ClientId"],
+                    config["Vault:ClientSecret"]);
+            }
+
+            return builder.Build();
+        }
+
     }
 }
 

src/Services/Identity/Identity.API/Startup.cs

@@ -42,12 +42,12 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API
             // Add framework services.
             services.AddDbContext<ApplicationDbContext>(options =>
              options.UseSqlServer(Configuration["ConnectionString"],
-                                     sqlServerOptionsAction: sqlOptions =>
-                                     {
-                                         sqlOptions.MigrationsAssembly(typeof(Startup).GetTypeInfo().Assembly.GetName().Name);
-                                         //Configuring Connection Resiliency: https://docs.microsoft.com/en-us/ef/core/miscellaneous/connection-resiliency 
-                                         sqlOptions.EnableRetryOnFailure(maxRetryCount: 15, maxRetryDelay: TimeSpan.FromSeconds(30), errorNumbersToAdd: null);
-                                     }));
+                sqlServerOptionsAction: sqlOptions =>
+                {
+                    sqlOptions.MigrationsAssembly(typeof(Startup).GetTypeInfo().Assembly.GetName().Name);
+                    //Configuring Connection Resiliency: https://docs.microsoft.com/en-us/ef/core/miscellaneous/connection-resiliency 
+                    sqlOptions.EnableRetryOnFailure(maxRetryCount: 15, maxRetryDelay: TimeSpan.FromSeconds(30), errorNumbersToAdd: null);
+                }));
 
             services.AddIdentity<ApplicationUser, IdentityRole>()
                 .AddEntityFrameworkStores<ApplicationDbContext>()
@@ -90,22 +90,22 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API
             .AddConfigurationStore(options =>
             {
                 options.ConfigureDbContext = builder => builder.UseSqlServer(connectionString,
-                                    sqlServerOptionsAction: sqlOptions =>
-                                    {
-                                        sqlOptions.MigrationsAssembly(migrationsAssembly);
-                                        //Configuring Connection Resiliency: https://docs.microsoft.com/en-us/ef/core/miscellaneous/connection-resiliency 
-                                        sqlOptions.EnableRetryOnFailure(maxRetryCount: 15, maxRetryDelay: TimeSpan.FromSeconds(30), errorNumbersToAdd: null);
-                                    });
+                    sqlServerOptionsAction: sqlOptions =>
+                    {
+                        sqlOptions.MigrationsAssembly(migrationsAssembly);
+                        //Configuring Connection Resiliency: https://docs.microsoft.com/en-us/ef/core/miscellaneous/connection-resiliency 
+                        sqlOptions.EnableRetryOnFailure(maxRetryCount: 15, maxRetryDelay: TimeSpan.FromSeconds(30), errorNumbersToAdd: null);
+                    });
             })
             .AddOperationalStore(options =>
                 {
                     options.ConfigureDbContext = builder => builder.UseSqlServer(connectionString,
-                                    sqlServerOptionsAction: sqlOptions =>
-                                    {
-                                        sqlOptions.MigrationsAssembly(migrationsAssembly);
-                                        //Configuring Connection Resiliency: https://docs.microsoft.com/en-us/ef/core/miscellaneous/connection-resiliency 
-                                        sqlOptions.EnableRetryOnFailure(maxRetryCount: 15, maxRetryDelay: TimeSpan.FromSeconds(30), errorNumbersToAdd: null);
-                                    });
+                        sqlServerOptionsAction: sqlOptions =>
+                        {
+                            sqlOptions.MigrationsAssembly(migrationsAssembly);
+                            //Configuring Connection Resiliency: https://docs.microsoft.com/en-us/ef/core/miscellaneous/connection-resiliency 
+                            sqlOptions.EnableRetryOnFailure(maxRetryCount: 15, maxRetryDelay: TimeSpan.FromSeconds(30), errorNumbersToAdd: null);
+                        });
                 })
             .Services.AddTransient<IProfileService, ProfileService>();
 
@@ -117,8 +117,11 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
-        {   
-            loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
+        {
+            //loggerFactory.AddConsole(Configuration.GetSection("Logging"));
+            //loggerFactory.AddDebug();
+            //loggerFactory.AddAzureWebAppDiagnostics();
+            //loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
 
             if (env.IsDevelopment())
             {
@@ -133,7 +136,7 @@ namespace Microsoft.eShopOnContainers.Services.Identity.API
             var pathBase = Configuration["PATH_BASE"];
             if (!string.IsNullOrEmpty(pathBase))
             {
-                loggerFactory.CreateLogger("init").LogDebug($"Using PATH BASE '{pathBase}'");
+                loggerFactory.CreateLogger<Startup>().LogDebug("Using PATH BASE '{pathBase}'", pathBase);
                 app.UsePathBase(pathBase);
             }
 

src/Services/Identity/Identity.API/appsettings.json

@@ -5,12 +5,15 @@
   "SpaClient": "http://localhost:5104",
   "XamarinCallback": "http://localhost:5105/xamarincallback",
   "UseCustomizationData": false,
-  "Logging": {
-    "IncludeScopes": false,
-    "LogLevel": {
-      "Default": "Trace",
-      "System": "Information",
-      "Microsoft": "Information"
+  "Serilog": {
+    "SeqServerUrl": null,
+    "MinimumLevel": {
+      "Default": "Information",
+      "Override": {
+        "Microsoft": "Warning",
+        "Microsoft.eShopOnContainers": "Information",
+        "System": "Warning"
+      }
     }
   },
   "ApplicationInsights": {

src/Services/Location/Locations.API/Infrastructure/Services/LocationsService.cs

@@ -6,6 +6,7 @@
     using Microsoft.eShopOnContainers.Services.Locations.API.IntegrationEvents.Events;
     using Microsoft.eShopOnContainers.Services.Locations.API.Model;
     using Microsoft.eShopOnContainers.Services.Locations.API.ViewModel;
+    using Microsoft.Extensions.Logging;
     using System;
     using System.Collections.Generic;
     using System.Threading.Tasks;
@@ -14,11 +15,16 @@
     {
         private readonly ILocationsRepository _locationsRepository;
         private readonly IEventBus _eventBus;
+        private readonly ILogger<LocationsService> _logger;
 
-        public LocationsService(ILocationsRepository locationsRepository, IEventBus eventBus)
+        public LocationsService(
+            ILocationsRepository locationsRepository,
+            IEventBus eventBus,
+            ILogger<LocationsService> logger)
         {
             _locationsRepository = locationsRepository ?? throw new ArgumentNullException(nameof(locationsRepository));
             _eventBus = eventBus ?? throw new ArgumentNullException(nameof(eventBus));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
         public async Task<Locations> GetLocationAsync(int locationId)
@@ -37,11 +43,11 @@
         }
 
         public async Task<bool> AddOrUpdateUserLocationAsync(string userId, LocationRequest currentPosition)
-        {            
+        {
             // Get the list of ordered regions the user currently is within
             var currentUserAreaLocationList = await _locationsRepository.GetCurrentUserRegionsListAsync(currentPosition);
-                      
-            if(currentUserAreaLocationList is null)
+
+            if (currentUserAreaLocationList is null)
             {
                 throw new LocationDomainException("User current area not found");
             }
@@ -66,13 +72,17 @@
         {
             var newUserLocations = MapUserLocationDetails(newLocations);
             var @event = new UserLocationUpdatedIntegrationEvent(userId, newUserLocations);
+
+            _logger.LogInformation("----- Publishing integration event: {IntegrationEventId} from {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
             _eventBus.Publish(@event);
         }
 
         private List<UserLocationDetails> MapUserLocationDetails(List<Locations> newLocations)
         {
             var result = new List<UserLocationDetails>();
-            newLocations.ForEach(location => {
+            newLocations.ForEach(location =>
+            {
                 result.Add(new UserLocationDetails()
                 {
                     LocationId = location.LocationId,

src/Services/Location/Locations.API/Locations.API.csproj

@@ -6,28 +6,32 @@
     <UserSecretsId>aspnet-Locations.API-20161122013619</UserSecretsId>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
-    <PackageReference Include="AspNetCore.HealthChecks.MongoDb" Version="2.2.0" />   
     <PackageReference Include="AspNetCore.HealthChecks.AzureServiceBus" Version="2.2.0" />
+    <PackageReference Include="AspNetCore.HealthChecks.MongoDb" Version="2.2.0" />   
     <PackageReference Include="AspNetCore.HealthChecks.Rabbitmq" Version="2.2.0" />
+    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
     <PackageReference Include="Autofac.Extensions.DependencyInjection" Version="4.2.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.2.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.DependencyCollector" Version="2.6.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.Kubernetes" Version="1.0.2" />
     <PackageReference Include="Microsoft.ApplicationInsights.ServiceFabric" Version="2.2.2" />
+    <PackageReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Microsoft.AspNetCore.Diagnostics.HealthChecks" Version="2.2.0" />
     <PackageReference Include="Microsoft.AspNetCore.HealthChecks" Version="1.0.0" />
-    <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" Version="2.2.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.AzureKeyVault" Version="2.2.0" />
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" Version="2.2.0" />
     <PackageReference Include="mongocsharpdriver" Version="2.5.0" />
     <PackageReference Include="MongoDB.Bson" Version="2.5.0" />
     <PackageReference Include="MongoDB.Driver" Version="2.5.0" />
     <PackageReference Include="MongoDB.Driver.Core" Version="2.5.0" />
     <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" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="3.0.0" />
   </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\..\..\BuildingBlocks\EventBus\EventBusRabbitMQ\EventBusRabbitMQ.csproj" />
     <ProjectReference Include="..\..\..\BuildingBlocks\EventBus\EventBusServiceBus\EventBusServiceBus.csproj" />

src/Services/Location/Locations.API/Program.cs

@@ -11,48 +11,78 @@ namespace Microsoft.eShopOnContainers.Services.Locations.API
 {
     public class Program
     {
-        public static void Main(string[] args)
+        public static readonly string Namespace = typeof(Program).Namespace;
+        public static readonly string AppName = Namespace.Substring(Namespace.LastIndexOf('.', Namespace.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 ({ApplicationContext})...", AppName);
+                var host = BuildWebHost(configuration, args);
+
+                Log.Information("Starting web host ({ApplicationContext})...", AppName);
+                host.Run();
+
+                return 0;
+            }
+            catch (Exception ex)
+            {
+                Log.Fatal(ex, "Program terminated unexpectedly ({ApplicationContext})!", AppName);
+                return 1;
+            }
+            finally
+            {
+                Log.CloseAndFlush();
+            }
         }
 
-        public static IWebHost BuildWebHost(string[] args) =>
+        private static IWebHost BuildWebHost(IConfiguration configuration, string[] args) =>
             WebHost.CreateDefaultBuilder(args)
-                .UseContentRoot(Directory.GetCurrentDirectory())
+                .CaptureStartupErrors(false)
                 .UseStartup<Startup>()
-                .ConfigureAppConfiguration((builderContext, config) =>
-                {
-                    var builtConfig = config.Build();
-
-                    var configurationBuilder = new ConfigurationBuilder();
-
-                    if (Convert.ToBoolean(builtConfig["UseVault"]))
-                    {
-                        configurationBuilder.AddAzureKeyVault(
-                            $"https://{builtConfig["Vault:Name"]}.vault.azure.net/",
-                            builtConfig["Vault:ClientId"],
-                            builtConfig["Vault:ClientSecret"]);
-                    }
-
-                    configurationBuilder.AddEnvironmentVariables();
-
-                    config.AddConfiguration(configurationBuilder.Build());
-                })
-                .ConfigureLogging((hostingContext, builder) =>
-                {
-                    builder.AddConfiguration(hostingContext.Configuration.GetSection("Logging"));
-                    builder.AddConsole();
-                    builder.AddDebug();
-                    builder.AddAzureWebAppDiagnostics();
-                })
                 .UseApplicationInsights()
-                .UseSerilog((builderContext, config) =>
-                {
-                    config
-                        .MinimumLevel.Information()
-                        .Enrich.FromLogContext()
-                        .WriteTo.Console();
-                })
+                .UseContentRoot(Directory.GetCurrentDirectory())
+                .UseConfiguration(configuration)
+                .UseSerilog()
                 .Build();
+
+        private static Serilog.ILogger CreateSerilogLogger(IConfiguration configuration)
+        {
+            var seqServerUrl = configuration["Serilog:SeqServerUrl"];
+
+            return new LoggerConfiguration()
+                .MinimumLevel.Verbose()
+                .Enrich.WithProperty("ApplicationContext", 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();
+
+            var config = builder.Build();
+
+            if (config.GetValue<bool>("UseVault", false))
+            {
+                builder.AddAzureKeyVault(
+                    $"https://{config["Vault:Name"]}.vault.azure.net/",
+                    config["Vault:ClientId"],
+                    config["Vault:ClientSecret"]);
+            }
+
+            return builder.Build();
+        }
     }
-}
+}

src/Services/Location/Locations.API/Startup.cs

@@ -153,9 +153,10 @@ namespace Microsoft.eShopOnContainers.Services.Locations.API
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
-        public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory)
+        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
         {
-            loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
+            //loggerFactory.AddAzureWebAppDiagnostics();
+            //loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
 
             var pathBase = Configuration["PATH_BASE"];
             if (!string.IsNullOrEmpty(pathBase))

src/Services/Location/Locations.API/appsettings.json

@@ -2,12 +2,15 @@
   "ConnectionString": "mongodb://nosql.data",
   "Database": "LocationsDb",
   "IdentityUrl": "http://localhost:5105",
-  "Logging": {
-    "IncludeScopes": false,
-    "LogLevel": {
-      "Default": "Trace",
-      "System": "Information",
-      "Microsoft": "Information"
+  "Serilog": {
+    "SeqServerUrl": null,
+    "MinimumLevel": {
+      "Default": "Information",
+      "Override": {
+        "Microsoft": "Warning",
+        "Microsoft.eShopOnContainers": "Information",
+        "System": "Warning"
+      }
     }
   },
   "AzureServiceBusEnabled": false,

src/Services/Marketing/Marketing.API/Infrastructure/MarketingContextSeed.cs

@@ -76,7 +76,7 @@
                     sleepDurationProvider: retry => TimeSpan.FromSeconds(5),
                     onRetry: (exception, timeSpan, retry, ctx) =>
                     {
-                        logger.LogTrace($"[{prefix}] Exception {exception.GetType().Name} with message ${exception.Message} detected on attempt {retry} of {retries}");
+                        logger.LogWarning(exception, "[{prefix}] Exception {ExceptionType} with message {Message} detected on attempt {retry} of {retries}", prefix, exception.GetType().Name, exception.Message, retry, retries);
                     }
                 );
         }

src/Services/Marketing/Marketing.API/IntegrationEvents/Handlers/UserLocationUpdatedIntegrationEventHandler.cs

@@ -4,6 +4,8 @@
     using Marketing.API.Model;
     using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
     using Microsoft.eShopOnContainers.Services.Marketing.API.Infrastructure.Repositories;
+    using Microsoft.Extensions.Logging;
+    using Serilog.Context;
     using System;
     using System.Collections.Generic;
     using System.Threading.Tasks;
@@ -12,20 +14,29 @@
         : IIntegrationEventHandler<UserLocationUpdatedIntegrationEvent>
     {
         private readonly IMarketingDataRepository _marketingDataRepository;
+        private readonly ILogger<UserLocationUpdatedIntegrationEventHandler> _logger;
 
-        public UserLocationUpdatedIntegrationEventHandler(IMarketingDataRepository repository)
+        public UserLocationUpdatedIntegrationEventHandler(
+            IMarketingDataRepository repository,
+            ILogger<UserLocationUpdatedIntegrationEventHandler> logger)
         {
             _marketingDataRepository = repository ?? throw new ArgumentNullException(nameof(repository));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
         public async Task Handle(UserLocationUpdatedIntegrationEvent @event)
         {
-            var userMarketingData = await _marketingDataRepository.GetAsync(@event.UserId);
-            userMarketingData = userMarketingData ?? 
-                new MarketingData() { UserId = @event.UserId };
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+            {
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
 
-            userMarketingData.Locations = MapUpdatedUserLocations(@event.LocationList);
-            await _marketingDataRepository.UpdateLocationAsync(userMarketingData);
+                var userMarketingData = await _marketingDataRepository.GetAsync(@event.UserId);
+                userMarketingData = userMarketingData ??
+                    new MarketingData() { UserId = @event.UserId };
+
+                userMarketingData.Locations = MapUpdatedUserLocations(@event.LocationList);
+                await _marketingDataRepository.UpdateLocationAsync(userMarketingData);
+            }
         }
 
         private List<Location> MapUpdatedUserLocations(List<UserLocationDetails> newUserLocations)

src/Services/Marketing/Marketing.API/Marketing.API.csproj

@@ -21,27 +21,30 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="AspNetCore.HealthChecks.AzureServiceBus" Version="2.2.0" />
-    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
-    <PackageReference Include="AspNetCore.HealthChecks.Rabbitmq" Version="2.2.0" />
     <PackageReference Include="AspNetCore.HealthChecks.AzureStorage" Version="2.2.0" />
     <PackageReference Include="AspNetCore.HealthChecks.MongoDb" Version="2.2.0" />
+    <PackageReference Include="AspNetCore.HealthChecks.Rabbitmq" Version="2.2.0" />
     <PackageReference Include="AspNetCore.HealthChecks.SqlServer" Version="2.2.0" />
+    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
     <PackageReference Include="Autofac.Extensions.DependencyInjection" Version="4.2.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.2.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.DependencyCollector" Version="2.6.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.Kubernetes" Version="1.0.2" />
+    <PackageReference Include="Microsoft.ApplicationInsights.ServiceFabric" Version="2.2.2" />
+    <PackageReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Microsoft.AspNetCore.Diagnostics.HealthChecks" Version="2.2.0" />
     <PackageReference Include="Microsoft.AspNetCore.HealthChecks" Version="1.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.AzureKeyVault" Version="2.2.0" />
-    <PackageReference Include="Microsoft.ApplicationInsights.ServiceFabric" Version="2.2.2" />
     <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" Version="2.2.0" />
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.2.0" />
     <PackageReference Include="mongocsharpdriver" Version="2.5.0" />
     <PackageReference Include="MongoDB.Bson" Version="2.5.0" />
     <PackageReference Include="MongoDB.Driver" Version="2.5.0" />
     <PackageReference Include="MongoDB.Driver.Core" Version="2.5.0" />
     <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" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="3.0.0" />
   </ItemGroup>
   <ItemGroup>

src/Services/Marketing/Marketing.API/Program.cs

@@ -12,59 +12,89 @@
 
     public class Program
     {
-        public static void Main(string[] args)
+        public static readonly string Namespace = typeof(Program).Namespace;
+        public static readonly string AppName = Namespace.Substring(Namespace.LastIndexOf('.', Namespace.LastIndexOf('.') - 1) + 1);
+
+        public static int Main(string[] args)
         {
-            BuildWebHost(args)
-            .MigrateDbContext<MarketingContext>((context, services) =>
+            var configuration = GetConfiguration();
+
+            Log.Logger = CreateSerilogLogger(configuration);
+
+            try
             {
-                var logger = services.GetService<ILogger<MarketingContextSeed>>();
+                Log.Information("Configuring web host ({ApplicationContext})...", AppName);
+                var host = BuildWebHost(configuration, args);
+
+                Log.Information("Applying migrations ({ApplicationContext})...", AppName);
+                host.MigrateDbContext<MarketingContext>((context, services) =>
+                {
+                    var logger = services.GetService<ILogger<MarketingContextSeed>>();
+
+                    new MarketingContextSeed()
+                        .SeedAsync(context, logger)
+                        .Wait();
+                });
 
-                new MarketingContextSeed()
-                    .SeedAsync(context,logger)
-                    .Wait();
+                Log.Information("Starting web host ({ApplicationContext})...", AppName);
+                host.Run();
 
-            }).Run();
+                return 0;
+            }
+            catch (Exception ex)
+            {
+                Log.Fatal(ex, "Program terminated unexpectedly ({ApplicationContext})!", AppName);
+                return 1;
+            }
+            finally
+            {
+                Log.CloseAndFlush();
+            }
         }
 
-        public static IWebHost BuildWebHost(string[] args) =>
+        private static IWebHost BuildWebHost(IConfiguration configuration, string[] args) =>
             WebHost.CreateDefaultBuilder(args)
+                .CaptureStartupErrors(false)
+                .UseStartup<Startup>()
                 .UseApplicationInsights()
                 .UseContentRoot(Directory.GetCurrentDirectory())
-                .UseStartup<Startup>()
                 .UseWebRoot("Pics")
-                .ConfigureAppConfiguration((builderContext, config) =>
-                {
-                    var builtConfig = config.Build();
+                .UseConfiguration(configuration)
+                .UseSerilog()
+                .Build();
 
-                    var configurationBuilder = new ConfigurationBuilder();
+        private static Serilog.ILogger CreateSerilogLogger(IConfiguration configuration)
+        {
+            var seqServerUrl = configuration["Serilog:SeqServerUrl"];
 
-                    if (Convert.ToBoolean(builtConfig["UseVault"]))
-                    {
-                        configurationBuilder.AddAzureKeyVault(
-                            $"https://{builtConfig["Vault:Name"]}.vault.azure.net/",
-                            builtConfig["Vault:ClientId"],
-                            builtConfig["Vault:ClientSecret"]);
-                    }
+            return new LoggerConfiguration()
+                .MinimumLevel.Verbose()
+                .Enrich.WithProperty("ApplicationContext", AppName)
+                .Enrich.FromLogContext()
+                .WriteTo.Console()
+                .WriteTo.Seq(string.IsNullOrWhiteSpace(seqServerUrl) ? "http://seq" : seqServerUrl)
+                .ReadFrom.Configuration(configuration)
+                .CreateLogger();
+        }
 
-                    configurationBuilder.AddEnvironmentVariables();
+        private static IConfiguration GetConfiguration()
+        {
+            var builder = new ConfigurationBuilder()
+                .SetBasePath(Directory.GetCurrentDirectory())
+                .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
+                .AddEnvironmentVariables();
 
-                    config.AddConfiguration(configurationBuilder.Build());
-                })
-                .ConfigureLogging((hostingContext, builder) =>
-                {
-                    builder.AddConfiguration(hostingContext.Configuration.GetSection("Logging"));
-                    builder.AddConsole();
-                    builder.AddDebug();
-                    builder.AddAzureWebAppDiagnostics();
-                })
-                .UseApplicationInsights()
-                .UseSerilog((builderContext, config) =>
-                {
-                    config
-                        .MinimumLevel.Information()
-                        .Enrich.FromLogContext()
-                        .WriteTo.Console();
-                })
-                .Build();
+            var config = builder.Build();
+
+            if (config.GetValue<bool>("UseVault", false))
+            {
+                builder.AddAzureKeyVault(
+                    $"https://{config["Vault:Name"]}.vault.azure.net/",
+                    config["Vault:ClientId"],
+                    config["Vault:ClientSecret"]);
+            }
+
+            return builder.Build();
+        }
     }
 }

src/Services/Marketing/Marketing.API/Startup.cs

@@ -179,7 +179,8 @@
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         public void Configure(IApplicationBuilder app, IHostingEnvironment env,ILoggerFactory loggerFactory)
         {
-            loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
+            //loggerFactory.AddAzureWebAppDiagnostics();
+            //loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
 
             var pathBase = Configuration["PATH_BASE"];
 

src/Services/Marketing/Marketing.API/appsettings.json

@@ -1,8 +1,13 @@
 {
-  "Logging": {
-    "IncludeScopes": false,
-    "LogLevel": {
-      "Default": "Trace"
+  "Serilog": {
+    "SeqServerUrl": null,
+    "MinimumLevel": {
+      "Default": "Information",
+      "Override": {
+        "Microsoft": "Warning",
+        "Microsoft.eShopOnContainers": "Information",
+        "System": "Warning"
+      }
     }
   },
   "ConnectionString": "Server=tcp:127.0.0.1,5433;Initial Catalog=Microsoft.eShopOnContainers.Services.MarketingDb;User Id=sa;Password=Pass@word",

src/Services/Ordering/Ordering.API/Application/Behaviors/BehaviorsHelperExtensions.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Ordering.API.Application.Behaviors
+{
+    internal static class BehaviorsHelperExtensions
+    {
+        internal static string GetGenericTypeName(this object @object)
+        {
+            var typeName = string.Empty;
+            var type = @object.GetType();
+
+            if (type.IsGenericType)
+            {
+                var genericTypes = string.Join(",", type.GetGenericArguments().Select(t => t.Name).ToArray());
+                typeName = $"{type.Name.Remove(type.Name.IndexOf('`'))}<{genericTypes}>";
+            }
+            else
+            {
+                typeName = type.Name;
+            }
+
+            return typeName;
+        }
+
+    }
+}

src/Services/Ordering/Ordering.API/Application/Behaviors/LoggingBehavior.cs

@@ -1,9 +1,10 @@
 using MediatR;
 using Microsoft.Extensions.Logging;
+using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 
-namespace Ordering.API.Infrastructure.Behaviors
+namespace Ordering.API.Application.Behaviors
 {
     public class LoggingBehavior<TRequest, TResponse> : IPipelineBehavior<TRequest, TResponse>
     {
@@ -12,9 +13,10 @@ namespace Ordering.API.Infrastructure.Behaviors
 
         public async Task<TResponse> Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate<TResponse> next)
         {
-            _logger.LogInformation($"Handling {typeof(TRequest).Name}");
+            _logger.LogInformation("----- Handling command {CommandName} ({@Command})", request.GetGenericTypeName(), request);
             var response = await next();
-            _logger.LogInformation($"Handled {typeof(TResponse).Name}");
+            _logger.LogInformation("----- Command {CommandName} handled - response: {@Response}", request.GetGenericTypeName(), response);
+
             return response;
         }
     }

src/Services/Ordering/Ordering.API/Application/Behaviors/TransactionBehaviour.cs

@@ -3,9 +3,8 @@ using Microsoft.EntityFrameworkCore;
 using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure;
 using Microsoft.Extensions.Logging;
 using Ordering.API.Application.IntegrationEvents;
+using Serilog.Context;
 using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -28,33 +27,41 @@ namespace Ordering.API.Application.Behaviors
 
         public async Task<TResponse> Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate<TResponse> next)
         {
-            TResponse response = default(TResponse);
+            var response = default(TResponse);
+            var typeName = request.GetGenericTypeName();
 
             try
             {
-                var strategy = _dbContext.Database.CreateExecutionStrategy();
-                await strategy.ExecuteAsync(async () => 
+                if (_dbContext.HasActiveTransaction)
                 {
-                    _logger.LogInformation($"Begin transaction {typeof(TRequest).Name}");
+                    return await next();
+                }
+
+                var strategy = _dbContext.Database.CreateExecutionStrategy();
 
-                    await _dbContext.BeginTransactionAsync();
+                await strategy.ExecuteAsync(async () =>
+                {
+                    using (var transaction = await _dbContext.BeginTransactionAsync())
+                    using (LogContext.PushProperty("TransactionContext", transaction.TransactionId))
+                    {
+                        _logger.LogInformation("----- Begin transaction {TransactionId} for {CommandName} ({@Command})", transaction.TransactionId, typeName, request);
 
-                    response = await next();
+                        response = await next();
 
-                    await _dbContext.CommitTransactionAsync();
+                        _logger.LogInformation("----- Commit transaction {TransactionId} for {CommandName}", transaction.TransactionId, typeName);
 
-                    _logger.LogInformation($"Committed transaction {typeof(TRequest).Name}");
+                        await _dbContext.CommitTransactionAsync(transaction);
+                    }
 
                     await _orderingIntegrationEventService.PublishEventsThroughEventBusAsync();
                 });
 
                 return response;
             }
-            catch (Exception)
+            catch (Exception ex)
             {
-                _logger.LogInformation($"Rollback transaction executed {typeof(TRequest).Name}");
+                _logger.LogError(ex, "ERROR Handling transaction for {CommandName} ({@Command})", typeName, request);
 
-                _dbContext.RollbackTransaction();
                 throw;
             }
         }

src/Services/Ordering/Ordering.API/Application/Behaviors/ValidatorBehavior.cs

@@ -1,20 +1,30 @@
 using FluentValidation;
 using MediatR;
+using Microsoft.Extensions.Logging;
 using Ordering.Domain.Exceptions;
-using System;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 
-namespace Ordering.API.Infrastructure.Behaviors
+namespace Ordering.API.Application.Behaviors
 {
     public class ValidatorBehavior<TRequest, TResponse> : IPipelineBehavior<TRequest, TResponse>
     {
+        private readonly ILogger<ValidatorBehavior<TRequest, TResponse>> _logger;
         private readonly IValidator<TRequest>[] _validators;
-        public ValidatorBehavior(IValidator<TRequest>[] validators) => _validators = validators;
+
+        public ValidatorBehavior(IValidator<TRequest>[] validators, ILogger<ValidatorBehavior<TRequest, TResponse>> logger)
+        {
+            _validators = validators;
+            _logger = logger;
+        }
 
         public async Task<TResponse> Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate<TResponse> next)
         {
+            var typeName = request.GetGenericTypeName();
+
+            _logger.LogInformation("----- Validating command {CommandType}", typeName);
+
             var failures = _validators
                 .Select(v => v.Validate(request))
                 .SelectMany(result => result.Errors)
@@ -23,12 +33,13 @@ namespace Ordering.API.Infrastructure.Behaviors
 
             if (failures.Any())
             {
+                _logger.LogWarning("Validation errors - {CommandType} - Command: {@Command} - Errors: {@ValidationErrors}", typeName, request, failures);
+
                 throw new OrderingDomainException(
                     $"Command Validation Errors for type {typeof(TRequest).Name}", new ValidationException("Validation exception", failures));
             }
 
-            var response = await next();
-            return response;
+            return await next();
         }
     }
-}
+}

src/Services/Ordering/Ordering.API/Application/Commands/CancelOrderCommandHandler.cs

@@ -2,6 +2,7 @@
 using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands;
 using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
 using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency;
+using Microsoft.Extensions.Logging;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -40,7 +41,11 @@ namespace Ordering.API.Application.Commands
     // Use for Idempotency in Command process
     public class CancelOrderIdentifiedCommandHandler : IdentifiedCommandHandler<CancelOrderCommand, bool>
     {
-        public CancelOrderIdentifiedCommandHandler(IMediator mediator, IRequestManager requestManager) : base(mediator, requestManager)
+        public CancelOrderIdentifiedCommandHandler(
+            IMediator mediator,
+            IRequestManager requestManager,
+            ILogger<IdentifiedCommandHandler<CancelOrderCommand, bool>> logger)
+            : base(mediator, requestManager, logger)
         {
         }
 

src/Services/Ordering/Ordering.API/Application/Commands/CreateOrderCommandHandler.cs

@@ -6,6 +6,7 @@
     using MediatR;
     using Microsoft.eShopOnContainers.Services.Ordering.API.Infrastructure.Services;
     using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency;
+    using Microsoft.Extensions.Logging;
     using System;
     using System.Threading;
     using System.Threading.Tasks;
@@ -18,17 +19,20 @@
         private readonly IIdentityService _identityService;
         private readonly IMediator _mediator;
         private readonly IOrderingIntegrationEventService _orderingIntegrationEventService;
+        private readonly ILogger<CreateOrderCommandHandler> _logger;
 
         // Using DI to inject infrastructure persistence Repositories
         public CreateOrderCommandHandler(IMediator mediator,
             IOrderingIntegrationEventService orderingIntegrationEventService,
-            IOrderRepository orderRepository, 
-            IIdentityService identityService)
+            IOrderRepository orderRepository,
+            IIdentityService identityService,
+            ILogger<CreateOrderCommandHandler> logger)
         {
             _orderRepository = orderRepository ?? throw new ArgumentNullException(nameof(orderRepository));
             _identityService = identityService ?? throw new ArgumentNullException(nameof(identityService));
             _mediator = mediator ?? throw new ArgumentNullException(nameof(mediator));
             _orderingIntegrationEventService = orderingIntegrationEventService ?? throw new ArgumentNullException(nameof(orderingIntegrationEventService));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
         public async Task<bool> Handle(CreateOrderCommand message, CancellationToken cancellationToken)
@@ -36,20 +40,22 @@
             // Add Integration event to clean the basket
             var orderStartedIntegrationEvent = new OrderStartedIntegrationEvent(message.UserId);
             await _orderingIntegrationEventService.AddAndSaveEventAsync(orderStartedIntegrationEvent);
-            
+
             // Add/Update the Buyer AggregateRoot
             // DDD patterns comment: Add child entities and value-objects through the Order Aggregate-Root
             // methods and constructor so validations, invariants and business logic 
             // make sure that consistency is preserved across the whole aggregate
             var address = new Address(message.Street, message.City, message.State, message.Country, message.ZipCode);
             var order = new Order(message.UserId, message.UserName, address, message.CardTypeId, message.CardNumber, message.CardSecurityNumber, message.CardHolderName, message.CardExpiration);
-            
+
             foreach (var item in message.OrderItems)
             {
                 order.AddOrderItem(item.ProductId, item.ProductName, item.UnitPrice, item.Discount, item.PictureUrl, item.Units);
             }
 
-             _orderRepository.Add(order);
+            _logger.LogInformation("----- Creating Order - Order: {@Order}", order);
+
+            _orderRepository.Add(order);
 
             return await _orderRepository.UnitOfWork
                 .SaveEntitiesAsync();
@@ -60,7 +66,11 @@
     // Use for Idempotency in Command process
     public class CreateOrderIdentifiedCommandHandler : IdentifiedCommandHandler<CreateOrderCommand, bool>
     {
-        public CreateOrderIdentifiedCommandHandler(IMediator mediator, IRequestManager requestManager) : base(mediator, requestManager)
+        public CreateOrderIdentifiedCommandHandler(
+            IMediator mediator,
+            IRequestManager requestManager,
+            ILogger<IdentifiedCommandHandler<CreateOrderCommand, bool>> logger)
+            : base(mediator, requestManager, logger)
         {
         }
 

src/Services/Ordering/Ordering.API/Application/Commands/IdentifiedCommandHandler.cs

@@ -1,5 +1,9 @@
 using MediatR;
 using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency;
+using Microsoft.Extensions.Logging;
+using Ordering.API.Application.Behaviors;
+using Ordering.API.Application.Commands;
+using System;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -16,11 +20,16 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands
     {
         private readonly IMediator _mediator;
         private readonly IRequestManager _requestManager;
+        private readonly ILogger<IdentifiedCommandHandler<T, R>> _logger;
 
-        public IdentifiedCommandHandler(IMediator mediator, IRequestManager requestManager)
+        public IdentifiedCommandHandler(
+            IMediator mediator,
+            IRequestManager requestManager,
+            ILogger<IdentifiedCommandHandler<T, R>> logger)
         {
             _mediator = mediator;
             _requestManager = requestManager;
+            _logger = logger ?? throw new System.ArgumentNullException(nameof(logger));
         }
 
         /// <summary>
@@ -48,16 +57,60 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands
             else
             {
                 await _requestManager.CreateRequestForCommandAsync<T>(message.Id);
-				try
-				{
-					// Send the embeded business command to mediator so it runs its related CommandHandler 
-					var result = await _mediator.Send(message.Command);
-					return result;
-				}
-				catch
-				{
-					return default(R);
-				}
+                try
+                {
+                    var command = message.Command;
+                    var commandName = command.GetGenericTypeName();
+                    var idProperty = string.Empty;
+                    var commandId = string.Empty;
+
+                    switch (command)
+                    {
+                        case CreateOrderCommand createOrderCommand:
+                            idProperty = nameof(createOrderCommand.UserId);
+                            commandId = createOrderCommand.UserId;
+                            break;
+
+                        case CancelOrderCommand cancelOrderCommand:
+                            idProperty = nameof(cancelOrderCommand.OrderNumber);
+                            commandId = $"{cancelOrderCommand.OrderNumber}";
+                            break;
+
+                        case ShipOrderCommand shipOrderCommand:
+                            idProperty = nameof(shipOrderCommand.OrderNumber);
+                            commandId = $"{shipOrderCommand.OrderNumber}";
+                            break;
+
+                        default:
+                            idProperty = "Id?";
+                            commandId = "n/a";
+                            break;
+                    }
+
+                    _logger.LogInformation(
+                        "----- Sending command: {CommandName} - {IdProperty}: {CommandId} ({@Command})",
+                        commandName,
+                        idProperty,
+                        commandId,
+                        command);
+
+                    // Send the embeded business command to mediator so it runs its related CommandHandler 
+                    var result = await _mediator.Send(command);
+
+                    _logger.LogInformation(
+                        "----- Command result: {@Result} - {CommandName} - {IdProperty}: {CommandId} ({@Command})",
+                        result,
+                        commandName,
+                        idProperty,
+                        commandId,
+                        command);
+
+                    return result;
+                }
+                catch
+                {
+                    return default(R);
+                }
             }
         }
     }

src/Services/Ordering/Ordering.API/Application/Commands/SetAwaitingValidationOrderStatusCommandHandler.cs

@@ -2,6 +2,7 @@
 using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands;
 using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
 using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency;
+using Microsoft.Extensions.Logging;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -40,7 +41,11 @@ namespace Ordering.API.Application.Commands
     // Use for Idempotency in Command process
     public class SetAwaitingValidationIdentifiedOrderStatusCommandHandler : IdentifiedCommandHandler<SetAwaitingValidationOrderStatusCommand, bool>
     {
-        public SetAwaitingValidationIdentifiedOrderStatusCommandHandler(IMediator mediator, IRequestManager requestManager) : base(mediator, requestManager)
+        public SetAwaitingValidationIdentifiedOrderStatusCommandHandler(
+            IMediator mediator,
+            IRequestManager requestManager,
+            ILogger<IdentifiedCommandHandler<SetAwaitingValidationOrderStatusCommand, bool>> logger)
+            : base(mediator, requestManager, logger)
         {
         }
 

src/Services/Ordering/Ordering.API/Application/Commands/SetPaidOrderStatusCommandHandler.cs

@@ -2,6 +2,7 @@
 using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands;
 using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
 using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency;
+using Microsoft.Extensions.Logging;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -43,7 +44,11 @@ namespace Ordering.API.Application.Commands
     // Use for Idempotency in Command process
     public class SetPaidIdentifiedOrderStatusCommandHandler : IdentifiedCommandHandler<SetPaidOrderStatusCommand, bool>
     {
-        public SetPaidIdentifiedOrderStatusCommandHandler(IMediator mediator, IRequestManager requestManager) : base(mediator, requestManager)
+        public SetPaidIdentifiedOrderStatusCommandHandler(
+            IMediator mediator,
+            IRequestManager requestManager,
+            ILogger<IdentifiedCommandHandler<SetPaidOrderStatusCommand, bool>> logger)
+            : base(mediator, requestManager, logger)
         {
         }
 

src/Services/Ordering/Ordering.API/Application/Commands/SetStockConfirmedOrderStatusCommandHandler.cs

@@ -2,6 +2,7 @@
 using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands;
 using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
 using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency;
+using Microsoft.Extensions.Logging;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -43,7 +44,11 @@ namespace Ordering.API.Application.Commands
     // Use for Idempotency in Command process
     public class SetStockConfirmedOrderStatusIdenfifiedCommandHandler : IdentifiedCommandHandler<SetStockConfirmedOrderStatusCommand, bool>
     {
-        public SetStockConfirmedOrderStatusIdenfifiedCommandHandler(IMediator mediator, IRequestManager requestManager) : base(mediator, requestManager)
+        public SetStockConfirmedOrderStatusIdenfifiedCommandHandler(
+            IMediator mediator,
+            IRequestManager requestManager,
+            ILogger<IdentifiedCommandHandler<SetStockConfirmedOrderStatusCommand, bool>> logger)
+            : base(mediator, requestManager, logger)
         {
         }
 

src/Services/Ordering/Ordering.API/Application/Commands/SetStockRejectedOrderStatusCommandHandler.cs

@@ -2,6 +2,7 @@
 using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands;
 using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
 using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency;
+using Microsoft.Extensions.Logging;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -44,7 +45,11 @@ namespace Ordering.API.Application.Commands
     // Use for Idempotency in Command process
     public class SetStockRejectedOrderStatusIdenfifiedCommandHandler : IdentifiedCommandHandler<SetStockRejectedOrderStatusCommand, bool>
     {
-        public SetStockRejectedOrderStatusIdenfifiedCommandHandler(IMediator mediator, IRequestManager requestManager) : base(mediator, requestManager)
+        public SetStockRejectedOrderStatusIdenfifiedCommandHandler(
+            IMediator mediator,
+            IRequestManager requestManager,
+            ILogger<IdentifiedCommandHandler<SetStockRejectedOrderStatusCommand, bool>> logger)
+            : base(mediator, requestManager, logger)
         {
         }
 

src/Services/Ordering/Ordering.API/Application/Commands/ShipOrderCommandHandler.cs

@@ -2,6 +2,7 @@
 using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands;
 using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
 using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency;
+using Microsoft.Extensions.Logging;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -9,7 +10,7 @@ namespace Ordering.API.Application.Commands
 {
     // Regular CommandHandler
     public class ShipOrderCommandHandler : IRequestHandler<ShipOrderCommand, bool>
-    {        
+    {
         private readonly IOrderRepository _orderRepository;
 
         public ShipOrderCommandHandler(IOrderRepository orderRepository)
@@ -26,7 +27,7 @@ namespace Ordering.API.Application.Commands
         public async Task<bool> Handle(ShipOrderCommand command, CancellationToken cancellationToken)
         {
             var orderToUpdate = await _orderRepository.GetAsync(command.OrderNumber);
-            if(orderToUpdate == null)
+            if (orderToUpdate == null)
             {
                 return false;
             }
@@ -40,7 +41,11 @@ namespace Ordering.API.Application.Commands
     // Use for Idempotency in Command process
     public class ShipOrderIdentifiedCommandHandler : IdentifiedCommandHandler<ShipOrderCommand, bool>
     {
-        public ShipOrderIdentifiedCommandHandler(IMediator mediator, IRequestManager requestManager) : base(mediator, requestManager)
+        public ShipOrderIdentifiedCommandHandler(
+            IMediator mediator,
+            IRequestManager requestManager,
+            ILogger<IdentifiedCommandHandler<ShipOrderCommand, bool>> logger)
+            : base(mediator, requestManager, logger)
         {
         }
 

src/Services/Ordering/Ordering.API/Application/DomainEventHandlers/BuyerAndPaymentMethodVerified/UpdateOrderWhenBuyerAndPaymentMethodVerifiedDomainEventHandler.cs

@@ -8,16 +8,16 @@ using System.Threading.Tasks;
 
 namespace Ordering.API.Application.DomainEventHandlers.BuyerAndPaymentMethodVerified
 {
-    public class UpdateOrderWhenBuyerAndPaymentMethodVerifiedDomainEventHandler 
+    public class UpdateOrderWhenBuyerAndPaymentMethodVerifiedDomainEventHandler
                    : INotificationHandler<BuyerAndPaymentMethodVerifiedDomainEvent>
     {
-        private readonly IOrderRepository _orderRepository;        
-        private readonly ILoggerFactory _logger;        
+        private readonly IOrderRepository _orderRepository;
+        private readonly ILoggerFactory _logger;
 
         public UpdateOrderWhenBuyerAndPaymentMethodVerifiedDomainEventHandler(
-            IOrderRepository orderRepository, ILoggerFactory logger)            
+            IOrderRepository orderRepository, ILoggerFactory logger)
         {
-            _orderRepository = orderRepository ?? throw new ArgumentNullException(nameof(orderRepository));            
+            _orderRepository = orderRepository ?? throw new ArgumentNullException(nameof(orderRepository));
             _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
@@ -28,10 +28,11 @@ namespace Ordering.API.Application.DomainEventHandlers.BuyerAndPaymentMethodVeri
         {
             var orderToUpdate = await _orderRepository.GetAsync(buyerPaymentMethodVerifiedEvent.OrderId);
             orderToUpdate.SetBuyerId(buyerPaymentMethodVerifiedEvent.Buyer.Id);
-            orderToUpdate.SetPaymentId(buyerPaymentMethodVerifiedEvent.Payment.Id);                                                
+            orderToUpdate.SetPaymentId(buyerPaymentMethodVerifiedEvent.Payment.Id);
 
-            _logger.CreateLogger(nameof(UpdateOrderWhenBuyerAndPaymentMethodVerifiedDomainEventHandler))
-                .LogTrace($"Order with Id: {buyerPaymentMethodVerifiedEvent.OrderId} has been successfully updated with a payment method id: { buyerPaymentMethodVerifiedEvent.Payment.Id }");                        
+            _logger.CreateLogger<UpdateOrderWhenBuyerAndPaymentMethodVerifiedDomainEventHandler>()
+                .LogTrace("Order with Id: {OrderId} has been successfully updated with a payment method {PaymentMethod} ({Id})",
+                    buyerPaymentMethodVerifiedEvent.OrderId, nameof(buyerPaymentMethodVerifiedEvent.Payment), buyerPaymentMethodVerifiedEvent.Payment.Id);
         }
-    }  
+    }
 }

src/Services/Ordering/Ordering.API/Application/DomainEventHandlers/OrderCancelled/OrderCancelledDomainEventHandler.cs

@@ -33,9 +33,9 @@ namespace Ordering.API.Application.DomainEventHandlers.OrderCancelled
 
         public async Task Handle(OrderCancelledDomainEvent orderCancelledDomainEvent, CancellationToken cancellationToken)
         {
-            _logger.CreateLogger(nameof(OrderCancelledDomainEvent))
-             .LogTrace($"Order with Id: {orderCancelledDomainEvent.Order.Id} has been successfully updated with " +
-                       $"a status order id: {OrderStatus.Shipped.Id}");
+            _logger.CreateLogger<OrderCancelledDomainEvent>()
+                .LogTrace("Order with Id: {OrderId} has been successfully updated to status {Status} ({Id})",
+                    orderCancelledDomainEvent.Order.Id, nameof(OrderStatus.Cancelled), OrderStatus.Cancelled.Id);
 
             var order = await _orderRepository.GetAsync(orderCancelledDomainEvent.Order.Id);
             var buyer = await _buyerRepository.FindByIdAsync(order.GetBuyerId.Value.ToString());

src/Services/Ordering/Ordering.API/Application/DomainEventHandlers/OrderGracePeriodConfirmed/OrderStatusChangedToAwaitingValidationDomainEventHandler.cs

@@ -33,9 +33,9 @@
 
         public async Task Handle(OrderStatusChangedToAwaitingValidationDomainEvent orderStatusChangedToAwaitingValidationDomainEvent, CancellationToken cancellationToken)
         {
-            _logger.CreateLogger(nameof(OrderStatusChangedToAwaitingValidationDomainEvent))
-                  .LogTrace($"Order with Id: {orderStatusChangedToAwaitingValidationDomainEvent.OrderId} has been successfully updated with " +
-                            $"a status order id: {OrderStatus.AwaitingValidation.Id}");
+            _logger.CreateLogger<OrderStatusChangedToAwaitingValidationDomainEvent>()
+                .LogTrace("Order with Id: {OrderId} has been successfully updated to status {Status} ({Id})",
+                    orderStatusChangedToAwaitingValidationDomainEvent.OrderId, nameof(OrderStatus.AwaitingValidation), OrderStatus.AwaitingValidation.Id);
 
             var order = await _orderRepository.GetAsync(orderStatusChangedToAwaitingValidationDomainEvent.OrderId);
 

src/Services/Ordering/Ordering.API/Application/DomainEventHandlers/OrderPaid/OrderStatusChangedToPaidDomainEventHandler.cs

@@ -35,9 +35,9 @@
 
         public async Task Handle(OrderStatusChangedToPaidDomainEvent orderStatusChangedToPaidDomainEvent, CancellationToken cancellationToken)
         {
-            _logger.CreateLogger(nameof(OrderStatusChangedToPaidDomainEventHandler))
-             .LogTrace($"Order with Id: {orderStatusChangedToPaidDomainEvent.OrderId} has been successfully updated with " +
-                       $"a status order id: {OrderStatus.Paid.Id}");
+            _logger.CreateLogger<OrderStatusChangedToPaidDomainEventHandler>()
+                .LogTrace("Order with Id: {OrderId} has been successfully updated to status {Status} ({Id})",
+                    orderStatusChangedToPaidDomainEvent.OrderId, nameof(OrderStatus.Paid), OrderStatus.Paid.Id);
 
             var order = await _orderRepository.GetAsync(orderStatusChangedToPaidDomainEvent.OrderId);
             var buyer = await _buyerRepository.FindByIdAsync(order.GetBuyerId.Value.ToString());

src/Services/Ordering/Ordering.API/Application/DomainEventHandlers/OrderShipped/OrderShippedDomainEventHandler.cs

@@ -33,9 +33,9 @@ namespace Ordering.API.Application.DomainEventHandlers.OrderShipped
 
         public async Task Handle(OrderShippedDomainEvent orderShippedDomainEvent, CancellationToken cancellationToken)
         {
-            _logger.CreateLogger(nameof(OrderShippedDomainEvent))
-             .LogTrace($"Order with Id: {orderShippedDomainEvent.Order.Id} has been successfully updated with " +
-                       $"a status order id: {OrderStatus.Shipped.Id}");
+            _logger.CreateLogger<OrderShippedDomainEvent>()
+                .LogTrace("Order with Id: {OrderId} has been successfully updated to status {Status} ({Id})",
+                    orderShippedDomainEvent.Order.Id, nameof(OrderStatus.Shipped), OrderStatus.Shipped.Id);
 
             var order = await _orderRepository.GetAsync(orderShippedDomainEvent.Order.Id);
             var buyer = await _buyerRepository.FindByIdAsync(order.GetBuyerId.Value.ToString());

src/Services/Ordering/Ordering.API/Application/DomainEventHandlers/OrderStartedEvent/ValidateOrAddBuyerAggregateWhenOrderStartedDomainEventHandler.cs

@@ -61,7 +61,9 @@ namespace Ordering.API.Application.DomainEventHandlers.OrderStartedEvent
             var orderStatusChangedTosubmittedIntegrationEvent = new OrderStatusChangedToSubmittedIntegrationEvent(orderStartedEvent.Order.Id, orderStartedEvent.Order.OrderStatus.Name, buyer.Name);
             await _orderingIntegrationEventService.AddAndSaveEventAsync(orderStatusChangedTosubmittedIntegrationEvent);
 
-            _logger.CreateLogger(nameof(ValidateOrAddBuyerAggregateWhenOrderStartedDomainEventHandler)).LogTrace($"Buyer {buyerUpdated.Id} and related payment method were validated or updated for orderId: {orderStartedEvent.Order.Id}.");
+            _logger.CreateLogger<ValidateOrAddBuyerAggregateWhenOrderStartedDomainEventHandler>()
+                .LogTrace("Buyer {BuyerId} and related payment method were validated or updated for orderId: {OrderId}.",
+                    buyerUpdated.Id, orderStartedEvent.Order.Id);
         }
     }
 }

src/Services/Ordering/Ordering.API/Application/DomainEventHandlers/OrderStockConfirmed/OrderStatusChangedToStockConfirmedDomainEventHandler.cs

@@ -33,9 +33,9 @@
 
         public async Task Handle(OrderStatusChangedToStockConfirmedDomainEvent orderStatusChangedToStockConfirmedDomainEvent, CancellationToken cancellationToken)
         {
-            _logger.CreateLogger(nameof(OrderStatusChangedToStockConfirmedDomainEventHandler))
-                .LogTrace($"Order with Id: {orderStatusChangedToStockConfirmedDomainEvent.OrderId} has been successfully updated with " +
-                          $"a status order id: {OrderStatus.StockConfirmed.Id}");
+            _logger.CreateLogger<OrderStatusChangedToStockConfirmedDomainEventHandler>()
+                .LogTrace("Order with Id: {OrderId} has been successfully updated to status {Status} ({Id})",
+                    orderStatusChangedToStockConfirmedDomainEvent.OrderId, nameof(OrderStatus.StockConfirmed), OrderStatus.StockConfirmed.Id);
 
             var order = await _orderRepository.GetAsync(orderStatusChangedToStockConfirmedDomainEvent.OrderId);
             var buyer = await _buyerRepository.FindByIdAsync(order.GetBuyerId.Value.ToString());

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/EventHandling/GracePeriodConfirmedIntegrationEventHandler.cs

@@ -1,8 +1,12 @@
 using MediatR;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
+using Microsoft.eShopOnContainers.Services.Ordering.API;
 using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
+using Microsoft.Extensions.Logging;
+using Ordering.API.Application.Behaviors;
 using Ordering.API.Application.Commands;
 using Ordering.API.Application.IntegrationEvents.Events;
+using Serilog.Context;
 using System.Threading.Tasks;
 
 namespace Ordering.API.Application.IntegrationEvents.EventHandling
@@ -10,10 +14,14 @@ namespace Ordering.API.Application.IntegrationEvents.EventHandling
     public class GracePeriodConfirmedIntegrationEventHandler : IIntegrationEventHandler<GracePeriodConfirmedIntegrationEvent>
     {
         private readonly IMediator _mediator;
+        private readonly ILogger<GracePeriodConfirmedIntegrationEventHandler> _logger;
 
-        public GracePeriodConfirmedIntegrationEventHandler(IMediator mediator)
+        public GracePeriodConfirmedIntegrationEventHandler(
+            IMediator mediator,
+            ILogger<GracePeriodConfirmedIntegrationEventHandler> logger)
         {
             _mediator = mediator;
+            _logger = logger ?? throw new System.ArgumentNullException(nameof(logger));
         }
 
         /// <summary>
@@ -26,8 +34,21 @@ namespace Ordering.API.Application.IntegrationEvents.EventHandling
         /// <returns></returns>
         public async Task Handle(GracePeriodConfirmedIntegrationEvent @event)
         {
-            var command = new SetAwaitingValidationOrderStatusCommand(@event.OrderId);
-            await _mediator.Send(command);
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+            {
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+                var command = new SetAwaitingValidationOrderStatusCommand(@event.OrderId);
+
+                _logger.LogInformation(
+                    "----- Sending command: {CommandName} - {IdProperty}: {CommandId} ({@Command})",
+                    command.GetGenericTypeName(),
+                    nameof(command.OrderNumber),
+                    command.OrderNumber,
+                    command);
+
+                await _mediator.Send(command);
+            }
         }
     }
 }

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/EventHandling/OrderPaymentFailedIntegrationEventHandler.cs

@@ -2,9 +2,13 @@
 {
     using MediatR;
     using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
+    using Microsoft.eShopOnContainers.Services.Ordering.API;
     using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
+    using Microsoft.Extensions.Logging;
+    using Ordering.API.Application.Behaviors;
     using Ordering.API.Application.Commands;
     using Ordering.API.Application.IntegrationEvents.Events;
+    using Serilog.Context;
     using System;
     using System.Threading.Tasks;
 
@@ -12,16 +16,33 @@
         IIntegrationEventHandler<OrderPaymentFailedIntegrationEvent>
     {
         private readonly IMediator _mediator;
+        private readonly ILogger<OrderPaymentFailedIntegrationEventHandler> _logger;
 
-        public OrderPaymentFailedIntegrationEventHandler(IMediator mediator)
+        public OrderPaymentFailedIntegrationEventHandler(
+            IMediator mediator,
+            ILogger<OrderPaymentFailedIntegrationEventHandler> logger)
         {
             _mediator = mediator ?? throw new ArgumentNullException(nameof(mediator));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
         public async Task Handle(OrderPaymentFailedIntegrationEvent @event)
         {
-            var command = new CancelOrderCommand(@event.OrderId);
-            await _mediator.Send(command);
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+            {
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+                var command = new CancelOrderCommand(@event.OrderId);
+
+                _logger.LogInformation(
+                    "----- Sending command: {CommandName} - {IdProperty}: {CommandId} ({@Command})",
+                    command.GetGenericTypeName(),
+                    nameof(command.OrderNumber),
+                    command.OrderNumber,
+                    command);
+
+                await _mediator.Send(command);
+            }
         }
     }
 }

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/EventHandling/OrderPaymentSuccededIntegrationEventHandler.cs

@@ -2,9 +2,13 @@
 {
     using MediatR;
     using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
+    using Microsoft.eShopOnContainers.Services.Ordering.API;
     using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
+    using Microsoft.Extensions.Logging;
+    using Ordering.API.Application.Behaviors;
     using Ordering.API.Application.Commands;
     using Ordering.API.Application.IntegrationEvents.Events;
+    using Serilog.Context;
     using System;
     using System.Threading.Tasks;
 
@@ -12,16 +16,33 @@
         IIntegrationEventHandler<OrderPaymentSuccededIntegrationEvent>
     {
         private readonly IMediator _mediator;
+        private readonly ILogger<OrderPaymentSuccededIntegrationEventHandler> _logger;
 
-        public OrderPaymentSuccededIntegrationEventHandler(IMediator mediator)
+        public OrderPaymentSuccededIntegrationEventHandler(
+            IMediator mediator,
+            ILogger<OrderPaymentSuccededIntegrationEventHandler> logger)
         {
             _mediator = mediator ?? throw new ArgumentNullException(nameof(mediator));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
         public async Task Handle(OrderPaymentSuccededIntegrationEvent @event)
         {
-            var command = new SetPaidOrderStatusCommand(@event.OrderId);
-            await _mediator.Send(command);
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+            {
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+                var command = new SetPaidOrderStatusCommand(@event.OrderId);
+
+                _logger.LogInformation(
+                    "----- Sending command: {CommandName} - {IdProperty}: {CommandId} ({@Command})",
+                    command.GetGenericTypeName(),
+                    nameof(command.OrderNumber),
+                    command.OrderNumber,
+                    command);
+
+                await _mediator.Send(command);
+            }
         }
     }
 }

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/EventHandling/OrderStockConfirmedIntegrationEventHandler.cs

@@ -7,21 +7,42 @@
     using MediatR;
     using System;
     using Ordering.API.Application.Commands;
+    using Microsoft.Extensions.Logging;
+    using Serilog.Context;
+    using Microsoft.eShopOnContainers.Services.Ordering.API;
+    using Ordering.API.Application.Behaviors;
 
-    public class OrderStockConfirmedIntegrationEventHandler : 
+    public class OrderStockConfirmedIntegrationEventHandler :
         IIntegrationEventHandler<OrderStockConfirmedIntegrationEvent>
     {
         private readonly IMediator _mediator;
+        private readonly ILogger<OrderStockConfirmedIntegrationEventHandler> _logger;
 
-        public OrderStockConfirmedIntegrationEventHandler(IMediator mediator)
+        public OrderStockConfirmedIntegrationEventHandler(
+            IMediator mediator,
+            ILogger<OrderStockConfirmedIntegrationEventHandler> logger)
         {
             _mediator = mediator ?? throw new ArgumentNullException(nameof(mediator));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
         public async Task Handle(OrderStockConfirmedIntegrationEvent @event)
         {
-            var command = new SetStockConfirmedOrderStatusCommand(@event.OrderId);
-            await _mediator.Send(command);
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+            {
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+                var command = new SetStockConfirmedOrderStatusCommand(@event.OrderId);
+
+                _logger.LogInformation(
+                    "----- Sending command: {CommandName} - {IdProperty}: {CommandId} ({@Command})",
+                    command.GetGenericTypeName(),
+                    nameof(command.OrderNumber),
+                    command.OrderNumber,
+                    command);
+
+                await _mediator.Send(command);
+            }
         }
     }
 }

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/EventHandling/OrderStockRejectedIntegrationEventHandler.cs

@@ -7,25 +7,46 @@
     using Microsoft.eShopOnContainers.Services.Ordering.Domain.AggregatesModel.OrderAggregate;
     using MediatR;
     using Ordering.API.Application.Commands;
+    using Microsoft.Extensions.Logging;
+    using Serilog.Context;
+    using Microsoft.eShopOnContainers.Services.Ordering.API;
+    using Ordering.API.Application.Behaviors;
 
     public class OrderStockRejectedIntegrationEventHandler : IIntegrationEventHandler<OrderStockRejectedIntegrationEvent>
     {
         private readonly IMediator _mediator;
+        private readonly ILogger<OrderStockRejectedIntegrationEventHandler> _logger;
 
-        public OrderStockRejectedIntegrationEventHandler(IMediator mediator)
+        public OrderStockRejectedIntegrationEventHandler(
+            IMediator mediator,
+            ILogger<OrderStockRejectedIntegrationEventHandler> logger)
         {
             _mediator = mediator;
+            _logger = logger ?? throw new System.ArgumentNullException(nameof(logger));
         }
 
         public async Task Handle(OrderStockRejectedIntegrationEvent @event)
         {
-            var orderStockRejectedItems = @event.OrderStockItems
-                .FindAll(c => !c.HasStock)
-                .Select(c => c.ProductId)
-                .ToList();
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+            {
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
 
-            var command = new SetStockRejectedOrderStatusCommand(@event.OrderId, orderStockRejectedItems);
-            await _mediator.Send(command);
+                var orderStockRejectedItems = @event.OrderStockItems
+                    .FindAll(c => !c.HasStock)
+                    .Select(c => c.ProductId)
+                    .ToList();
+
+                var command = new SetStockRejectedOrderStatusCommand(@event.OrderId, orderStockRejectedItems);
+
+                _logger.LogInformation(
+                    "----- Sending command: {CommandName} - {IdProperty}: {CommandId} ({@Command})",
+                    command.GetGenericTypeName(),
+                    nameof(command.OrderNumber),
+                    command.OrderNumber,
+                    command);
+
+                await _mediator.Send(command);
+            }
         }
     }
 }

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/EventHandling/UserCheckoutAcceptedIntegrationEventHandler.cs

@@ -5,48 +5,77 @@ using System.Threading.Tasks;
 using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands;
 using Microsoft.Extensions.Logging;
 using Ordering.API.Application.IntegrationEvents.Events;
+using Serilog.Context;
+using Microsoft.eShopOnContainers.Services.Ordering.API;
+using Ordering.API.Application.Behaviors;
 
 namespace Ordering.API.Application.IntegrationEvents.EventHandling
 {
     public class UserCheckoutAcceptedIntegrationEventHandler : IIntegrationEventHandler<UserCheckoutAcceptedIntegrationEvent>
     {
         private readonly IMediator _mediator;
-        private readonly ILoggerFactory _logger;        
+        private readonly ILogger<UserCheckoutAcceptedIntegrationEventHandler> _logger;
 
-        public UserCheckoutAcceptedIntegrationEventHandler(IMediator mediator,
-            ILoggerFactory logger)
+        public UserCheckoutAcceptedIntegrationEventHandler(
+            IMediator mediator,
+            ILogger<UserCheckoutAcceptedIntegrationEventHandler> logger)
         {
             _mediator = mediator ?? throw new ArgumentNullException(nameof(mediator));
-            _logger = logger ?? throw new ArgumentNullException(nameof(logger));          
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
         /// <summary>
         /// Integration event handler which starts the create order process
         /// </summary>
-        /// <param name="eventMsg">
+        /// <param name="@event">
         /// Integration event message which is sent by the
         /// basket.api once it has successfully process the 
         /// order items.
         /// </param>
         /// <returns></returns>
-        public async Task Handle(UserCheckoutAcceptedIntegrationEvent eventMsg)
+        public async Task Handle(UserCheckoutAcceptedIntegrationEvent @event)
         {
-            var result = false;
-           
-            if (eventMsg.RequestId != Guid.Empty)
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
             {
-                var createOrderCommand = new CreateOrderCommand(eventMsg.Basket.Items, eventMsg.UserId, eventMsg.UserName, eventMsg.City, eventMsg.Street, 
-                    eventMsg.State, eventMsg.Country, eventMsg.ZipCode,
-                    eventMsg.CardNumber, eventMsg.CardHolderName, eventMsg.CardExpiration,
-                    eventMsg.CardSecurityNumber, eventMsg.CardTypeId);
-
-                var requestCreateOrder = new IdentifiedCommand<CreateOrderCommand, bool>(createOrderCommand, eventMsg.RequestId);
-                result = await _mediator.Send(requestCreateOrder);
-            }            
-
-            _logger.CreateLogger(nameof(UserCheckoutAcceptedIntegrationEventHandler))
-                .LogTrace(result ? $"UserCheckoutAccepted integration event has been received and a create new order process is started with requestId: {eventMsg.RequestId}" : 
-                    $"UserCheckoutAccepted integration event has been received but a new order process has failed with requestId: {eventMsg.RequestId}");
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+                var result = false;
+
+                if (@event.RequestId != Guid.Empty)
+                {
+                    using (LogContext.PushProperty("IdentifiedCommandId", @event.RequestId))
+                    {
+                        var createOrderCommand = new CreateOrderCommand(@event.Basket.Items, @event.UserId, @event.UserName, @event.City, @event.Street,
+                            @event.State, @event.Country, @event.ZipCode,
+                            @event.CardNumber, @event.CardHolderName, @event.CardExpiration,
+                            @event.CardSecurityNumber, @event.CardTypeId);
+
+                        var requestCreateOrder = new IdentifiedCommand<CreateOrderCommand, bool>(createOrderCommand, @event.RequestId);
+
+                        _logger.LogInformation(
+                            "----- Sending command: {CommandName} - {IdProperty}: {CommandId} ({@Command})", 
+                            requestCreateOrder.GetGenericTypeName(),
+                            nameof(requestCreateOrder.Id),
+                            requestCreateOrder.Id,
+                            requestCreateOrder);
+
+                        result = await _mediator.Send(requestCreateOrder);
+
+                        if (result)
+                        {
+                            _logger.LogInformation("----- CreateOrderCommand suceeded - RequestId: {RequestId}", @event.RequestId);
+                        }
+                        else
+                        {
+                            _logger.LogWarning("CreateOrderCommand failed - RequestId: {RequestId}", @event.RequestId);
+                        }
+                    }
+                }
+                else
+                {
+                    _logger.LogWarning("Invalid IntegrationEvent - RequestId is missing - {@IntegrationEvent}", @event);
+                }
+            }
         }
     }
 }

src/Services/Ordering/Ordering.API/Application/IntegrationEvents/OrderingIntegrationEventService.cs

@@ -5,7 +5,9 @@ using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Events;
 using Microsoft.eShopOnContainers.BuildingBlocks.IntegrationEventLogEF;
 using Microsoft.eShopOnContainers.BuildingBlocks.IntegrationEventLogEF.Services;
 using Microsoft.eShopOnContainers.BuildingBlocks.IntegrationEventLogEF.Utilities;
+using Microsoft.eShopOnContainers.Services.Ordering.API;
 using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure;
+using Microsoft.Extensions.Logging;
 using System;
 using System.Data.Common;
 using System.Diagnostics;
@@ -21,39 +23,49 @@ namespace Ordering.API.Application.IntegrationEvents
         private readonly OrderingContext _orderingContext;
         private readonly IntegrationEventLogContext _eventLogContext;
         private readonly IIntegrationEventLogService _eventLogService;
+        private readonly ILogger<OrderingIntegrationEventService> _logger;
 
-        public OrderingIntegrationEventService(IEventBus eventBus, 
+        public OrderingIntegrationEventService(IEventBus eventBus,
             OrderingContext orderingContext,
             IntegrationEventLogContext eventLogContext,
-            Func<DbConnection, IIntegrationEventLogService> integrationEventLogServiceFactory)
+            Func<DbConnection, IIntegrationEventLogService> integrationEventLogServiceFactory,
+            ILogger<OrderingIntegrationEventService> logger)
         {
             _orderingContext = orderingContext ?? throw new ArgumentNullException(nameof(orderingContext));
             _eventLogContext = eventLogContext ?? throw new ArgumentNullException(nameof(eventLogContext));
             _integrationEventLogServiceFactory = integrationEventLogServiceFactory ?? throw new ArgumentNullException(nameof(integrationEventLogServiceFactory));
             _eventBus = eventBus ?? throw new ArgumentNullException(nameof(eventBus));
             _eventLogService = _integrationEventLogServiceFactory(_orderingContext.Database.GetDbConnection());
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
         public async Task PublishEventsThroughEventBusAsync()
         {
             var pendindLogEvents = await _eventLogService.RetrieveEventLogsPendingToPublishAsync();
+
             foreach (var logEvt in pendindLogEvents)
             {
+                _logger.LogInformation("----- Publishing integration event: {IntegrationEventId} from {AppName} - ({@IntegrationEvent})", logEvt.EventId, Program.AppName, logEvt.IntegrationEvent);
+
                 try
                 {
                     await _eventLogService.MarkEventAsInProgressAsync(logEvt.EventId);
                     _eventBus.Publish(logEvt.IntegrationEvent);
                     await _eventLogService.MarkEventAsPublishedAsync(logEvt.EventId);
                 }
-                catch (Exception)
+                catch (Exception ex)
                 {
+                    _logger.LogError(ex, "ERROR publishing integration event: {IntegrationEventId} from {AppName}", logEvt.EventId, Program.AppName);
+
                     await _eventLogService.MarkEventAsFailedAsync(logEvt.EventId);
-                }                
+                }
             }
         }
 
         public async Task AddAndSaveEventAsync(IntegrationEvent evt)
         {
+            _logger.LogInformation("----- Enqueuing integration event {IntegrationEventId} to repository ({@IntegrationEvent})", evt.Id, evt);
+
             await _eventLogService.SaveEventAsync(evt, _orderingContext.GetCurrentTransaction.GetDbTransaction());
         }
     }

src/Services/Ordering/Ordering.API/Controllers/OrdersController.cs

@@ -4,6 +4,8 @@ using Microsoft.AspNetCore.Mvc;
 using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands;
 using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Queries;
 using Microsoft.eShopOnContainers.Services.Ordering.API.Infrastructure.Services;
+using Microsoft.Extensions.Logging;
+using Ordering.API.Application.Behaviors;
 using Ordering.API.Application.Commands;
 using System;
 using System.Collections.Generic;
@@ -20,12 +22,18 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.API.Controllers
         private readonly IMediator _mediator;
         private readonly IOrderQueries _orderQueries;
         private readonly IIdentityService _identityService;
+        private readonly ILogger<OrdersController> _logger;
 
-        public OrdersController(IMediator mediator, IOrderQueries orderQueries, IIdentityService identityService)
+        public OrdersController(
+            IMediator mediator, 
+            IOrderQueries orderQueries, 
+            IIdentityService identityService,
+            ILogger<OrdersController> logger)
         {
             _mediator = mediator ?? throw new ArgumentNullException(nameof(mediator));
             _orderQueries = orderQueries ?? throw new ArgumentNullException(nameof(orderQueries));
             _identityService = identityService ?? throw new ArgumentNullException(nameof(identityService));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
         [Route("cancel")]
@@ -39,6 +47,14 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.API.Controllers
             if (Guid.TryParse(requestId, out Guid guid) && guid != Guid.Empty)
             {
                 var requestCancelOrder = new IdentifiedCommand<CancelOrderCommand, bool>(command, guid);
+
+                _logger.LogInformation(
+                    "----- Sending command: {CommandName} - {IdProperty}: {CommandId} ({@Command})",
+                    requestCancelOrder.GetGenericTypeName(),
+                    nameof(requestCancelOrder.Command.OrderNumber),
+                    requestCancelOrder.Command.OrderNumber,
+                    requestCancelOrder);
+
                 commandResult = await _mediator.Send(requestCancelOrder);
             }
 
@@ -61,6 +77,14 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.API.Controllers
             if (Guid.TryParse(requestId, out Guid guid) && guid != Guid.Empty)
             {
                 var requestShipOrder = new IdentifiedCommand<ShipOrderCommand, bool>(command, guid);
+
+                _logger.LogInformation(
+                    "----- Sending command: {CommandName} - {IdProperty}: {CommandId} ({@Command})",
+                    requestShipOrder.GetGenericTypeName(),
+                    nameof(requestShipOrder.Command.OrderNumber),
+                    requestShipOrder.Command.OrderNumber,
+                    requestShipOrder);
+
                 commandResult = await _mediator.Send(requestShipOrder);
             }
 
@@ -114,6 +138,13 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.API.Controllers
         [HttpPost]
         public async Task<ActionResult<OrderDraftDTO>> CreateOrderDraftFromBasketDataAsync([FromBody] CreateOrderDraftCommand createOrderDraftCommand)
         {
+            _logger.LogInformation(
+                "----- Sending command: {CommandName} - {IdProperty}: {CommandId} ({@Command})",
+                createOrderDraftCommand.GetGenericTypeName(),
+                nameof(createOrderDraftCommand.BuyerId),
+                createOrderDraftCommand.BuyerId,
+                createOrderDraftCommand);
+
             return await _mediator.Send(createOrderDraftCommand);
         }
     }

src/Services/Ordering/Ordering.API/Infrastructure/AutofacModules/MediatorModule.cs

@@ -7,7 +7,6 @@ using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands;
 using Ordering.API.Application.Behaviors;
 using Ordering.API.Application.DomainEventHandlers.OrderStartedEvent;
 using Ordering.API.Application.Validations;
-using Ordering.API.Infrastructure.Behaviors;
 
 namespace Microsoft.eShopOnContainers.Services.Ordering.API.Infrastructure.AutofacModules
 {

src/Services/Ordering/Ordering.API/Infrastructure/OrderingContextSeed.cs

@@ -74,7 +74,7 @@
             }
             catch (Exception ex)
             {
-                log.LogError(ex.Message);
+                log.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message);
                 return GetPredefinedCardTypes();
             }
 
@@ -82,7 +82,7 @@
             return File.ReadAllLines(csvFileCardTypes)
                                         .Skip(1) // skip header column
                                         .SelectTry(x => CreateCardType(x, ref id))
-                                        .OnCaughtException(ex => { log.LogError(ex.Message); return null; })
+                                        .OnCaughtException(ex => { log.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message); return null; })
                                         .Where(x => x != null);
         }
 
@@ -118,7 +118,7 @@
             }
             catch (Exception ex)
             {
-                log.LogError(ex.Message);
+                log.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message);
                 return GetPredefinedOrderStatus();
             }
 
@@ -126,7 +126,7 @@
             return File.ReadAllLines(csvFileOrderStatus)
                                         .Skip(1) // skip header row
                                         .SelectTry(x => CreateOrderStatus(x, ref id))
-                                        .OnCaughtException(ex => { log.LogError(ex.Message); return null; })
+                                        .OnCaughtException(ex => { log.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message); return null; })
                                         .Where(x => x != null);
         }
 
@@ -182,7 +182,7 @@
                     sleepDurationProvider: retry => TimeSpan.FromSeconds(5),
                     onRetry: (exception, timeSpan, retry, ctx) =>
                     {
-                        logger.LogTrace($"[{prefix}] Exception {exception.GetType().Name} with message ${exception.Message} detected on attempt {retry} of {retries}");
+                        logger.LogWarning(exception, "[{prefix}] Exception {ExceptionType} with message {Message} detected on attempt {retry} of {retries}", prefix, exception.GetType().Name, exception.Message, retry, retries);
                     }
                 );
         }

src/Services/Ordering/Ordering.API/Ordering.API.csproj

@@ -5,6 +5,7 @@
     <UserSecretsId>aspnet-Ordering.API-20161122013547</UserSecretsId>
     <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>
     <DockerComposeProjectPath>..\..\..\..\docker-compose.dcproj</DockerComposeProjectPath>
+    <LangVersion>latest</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
@@ -27,30 +28,33 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="AspNetCore.HealthChecks.SqlServer" Version="2.2.0" />
-    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
     <PackageReference Include="AspNetCore.HealthChecks.AzureServiceBus" Version="2.2.0" />
     <PackageReference Include="AspNetCore.HealthChecks.Rabbitmq" Version="2.2.0" />
+    <PackageReference Include="AspNetCore.HealthChecks.SqlServer" Version="2.2.0" />
+    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
+    <PackageReference Include="Autofac.Extensions.DependencyInjection" Version="4.2.1" />
+    <PackageReference Include="Dapper" Version="1.50.7" />
     <PackageReference Include="FluentValidation.AspNetCore" Version="7.5.0" />
+    <PackageReference Include="MediatR" Version="5.1.0" />
     <PackageReference Include="MediatR.Extensions.Microsoft.DependencyInjection" Version="5.1.0" />
-    <PackageReference Include="Autofac.Extensions.DependencyInjection" Version="4.2.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.2.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.DependencyCollector" Version="2.6.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.Kubernetes" Version="1.0.2" />
     <PackageReference Include="Microsoft.ApplicationInsights.ServiceFabric" Version="2.2.2" />
+    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.2.0" />
     <PackageReference Include="Microsoft.AspNetCore.Diagnostics.HealthChecks" Version="2.2.0" />
     <PackageReference Include="Microsoft.AspNetCore.HealthChecks" Version="1.0.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.AzureKeyVault" Version="2.2.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" Version="2.2.0" />
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.2.0" />
-    <PackageReference Include="MediatR" Version="5.1.0" />
+    <PackageReference Include="Polly" Version="6.0.1" />
     <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" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="3.0.0" />
     <PackageReference Include="System.Reflection" Version="4.3.0" />
-    <PackageReference Include="Dapper" Version="1.50.7" />
     <PackageReference Include="System.ValueTuple" Version="4.5.0" />
-    <PackageReference Include="Polly" Version="6.0.1" />
   </ItemGroup>
   <ItemGroup>
     <None Update="Setup\*">

src/Services/Ordering/Ordering.API/Program.cs

@@ -15,10 +15,22 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.API
 {
     public class Program
     {
-        public static void Main(string[] args)
+        public static readonly string Namespace = typeof(Program).Namespace;
+        public static readonly string AppName = Namespace.Substring(Namespace.LastIndexOf('.', Namespace.LastIndexOf('.') - 1) + 1);
+
+        public static int Main(string[] args)
         {
-            BuildWebHost(args)
-                .MigrateDbContext<OrderingContext>((context, services) =>
+            var configuration = GetConfiguration();
+
+            Log.Logger = CreateSerilogLogger(configuration);
+
+            try
+            {
+                Log.Information("Configuring web host ({ApplicationContext})...", AppName);
+                var host = BuildWebHost(configuration, args);
+
+                Log.Information("Applying migrations ({ApplicationContext})...", AppName);
+                host.MigrateDbContext<OrderingContext>((context, services) =>
                 {
                     var env = services.GetService<IHostingEnvironment>();
                     var settings = services.GetService<IOptions<OrderingSettings>>();
@@ -28,47 +40,66 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.API
                         .SeedAsync(context, env, settings, logger)
                         .Wait();
                 })
-                .MigrateDbContext<IntegrationEventLogContext>((_,__)=>{})
-                .Run();
+                .MigrateDbContext<IntegrationEventLogContext>((_, __) => { });
+
+                Log.Information("Starting web host ({ApplicationContext})...", AppName);
+                host.Run();
+
+                return 0;
+            }
+            catch (Exception ex)
+            {
+                Log.Fatal(ex, "Program terminated unexpectedly ({ApplicationContext})!", AppName);
+                return 1;
+            }
+            finally
+            {
+                Log.CloseAndFlush();
+            }
         }
 
-        public static IWebHost BuildWebHost(string[] args) =>
-            WebHost.CreateDefaultBuilder(args)                
+        private static IWebHost BuildWebHost(IConfiguration configuration, string[] args) =>
+            WebHost.CreateDefaultBuilder(args)
+                .CaptureStartupErrors(false)
                 .UseStartup<Startup>()
+                .UseApplicationInsights()
                 .UseContentRoot(Directory.GetCurrentDirectory())
-                .ConfigureAppConfiguration((builderContext, config) =>
-                {
-                    var builtConfig = config.Build();
+                .UseConfiguration(configuration)
+                .UseSerilog()
+                .Build();
 
-                    var configurationBuilder = new ConfigurationBuilder();
-                    
-                    if (Convert.ToBoolean(builtConfig["UseVault"]))
-                    {
-                        configurationBuilder.AddAzureKeyVault(
-                            $"https://{builtConfig["Vault:Name"]}.vault.azure.net/",
-                            builtConfig["Vault:ClientId"],
-                            builtConfig["Vault:ClientSecret"]);
-                    }
+        private static Serilog.ILogger CreateSerilogLogger(IConfiguration configuration)
+        {
+            var seqServerUrl = configuration["Serilog:SeqServerUrl"];
 
-                    configurationBuilder.AddEnvironmentVariables();
+            return new LoggerConfiguration()
+                .MinimumLevel.Verbose()
+                .Enrich.WithProperty("ApplicationContext", AppName)
+                .Enrich.FromLogContext()
+                .WriteTo.Console()
+                .WriteTo.Seq(string.IsNullOrWhiteSpace(seqServerUrl) ? "http://seq" : seqServerUrl)
+                .ReadFrom.Configuration(configuration)
+                .CreateLogger();
+        }
 
-                    config.AddConfiguration(configurationBuilder.Build());
-                })
-                .ConfigureLogging((hostingContext, builder) =>
-                {
-                    builder.AddConfiguration(hostingContext.Configuration.GetSection("Logging"));
-                    builder.AddConsole();
-                    builder.AddDebug();
-                    builder.AddAzureWebAppDiagnostics();
-                })
-                .UseApplicationInsights()
-                .UseSerilog((builderContext, config) =>
-                {
-                    config
-                        .MinimumLevel.Information()
-                        .Enrich.FromLogContext()
-                        .WriteTo.Console();
-                })
-                .Build();
+        private static IConfiguration GetConfiguration()
+        {
+            var builder = new ConfigurationBuilder()
+                .SetBasePath(Directory.GetCurrentDirectory())
+                .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
+                .AddEnvironmentVariables();
+
+            var config = builder.Build();
+
+            if (config.GetValue<bool>("UseVault", false))
+            {
+                builder.AddAzureKeyVault(
+                    $"https://{config["Vault:Name"]}.vault.azure.net/",
+                    config["Vault:ClientId"],
+                    config["Vault:ClientSecret"]);
+            }
+
+            return builder.Build();
+        }
     }
-}
+}

src/Services/Ordering/Ordering.API/Startup.cs

@@ -74,14 +74,15 @@
 
         public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory)
         {
-            loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
+            //loggerFactory.AddAzureWebAppDiagnostics();
+            //loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
 
             var pathBase = Configuration["PATH_BASE"];
             if (!string.IsNullOrEmpty(pathBase))
             {
-                loggerFactory.CreateLogger("init").LogDebug($"Using PATH BASE '{pathBase}'");
+                loggerFactory.CreateLogger<Startup>().LogDebug("Using PATH BASE '{pathBase}'", pathBase);
                 app.UsePathBase(pathBase);
-            }            
+            }
 
             app.UseCors("CorsPolicy");
 
@@ -121,10 +122,9 @@
             eventBus.Subscribe<OrderStockConfirmedIntegrationEvent, IIntegrationEventHandler<OrderStockConfirmedIntegrationEvent>>();
             eventBus.Subscribe<OrderStockRejectedIntegrationEvent, IIntegrationEventHandler<OrderStockRejectedIntegrationEvent>>();
             eventBus.Subscribe<OrderPaymentFailedIntegrationEvent, IIntegrationEventHandler<OrderPaymentFailedIntegrationEvent>>();
-            eventBus.Subscribe<OrderPaymentSuccededIntegrationEvent, IIntegrationEventHandler<OrderPaymentSuccededIntegrationEvent>>();           
+            eventBus.Subscribe<OrderPaymentSuccededIntegrationEvent, IIntegrationEventHandler<OrderPaymentSuccededIntegrationEvent>>();
         }
 
-
         protected virtual void ConfigureAuth(IApplicationBuilder app)
         {
             if (Configuration.GetValue<bool>("UseLoadTest"))
@@ -167,7 +167,7 @@
                 })
                 .SetCompatibilityVersion(CompatibilityVersion.Version_2_2)
                 .AddControllersAsServices();  //Injecting Controllers themselves thru DI
-                                            //For further info see: http://docs.autofac.org/en/latest/integration/aspnetcore.html#controllers-as-services
+                                              //For further info see: http://docs.autofac.org/en/latest/integration/aspnetcore.html#controllers-as-services
 
             services.AddCors(options =>
             {

src/Services/Ordering/Ordering.API/appsettings.json

@@ -2,12 +2,15 @@
   "ConnectionString": "Server=tcp:127.0.0.1,5433;Database=Microsoft.eShopOnContainers.Services.OrderingDb;User Id=sa;Password=Pass@word;",
   "IdentityUrl": "http://localhost:5105",
   "UseCustomizationData": false,
-  "Logging": {
-    "IncludeScopes": false,
-    "LogLevel": {
-      "Default": "Trace",
-      "System": "Information",
-      "Microsoft": "Information"
+  "Serilog": {
+    "SeqServerUrl": null,
+    "MinimumLevel": {
+      "Default": "Information",
+      "Override": {
+        "Microsoft": "Warning",
+        "Microsoft.eShopOnContainers": "Information",
+        "System": "Warning"
+      }
     }
   },
   "AzureServiceBusEnabled": false,

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>

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 Namespace = typeof(Program).Namespace;
+        public static readonly string AppName = Namespace;
+
+        public static int Main(string[] args)
         {
-            BuildWebHost(args).Run();
+            var configuration = GetConfiguration();
+
+            Log.Logger = CreateSerilogLogger(configuration);
+
+            try
+            {
+                Log.Information("Configuring web host ({ApplicationContext})...", AppName);
+                var host = BuildWebHost(configuration, args);
+
+                Log.Information("Starting web host ({ApplicationContext})...", AppName);
+                host.Run();
+
+                return 0;
+            }
+            catch (Exception ex)
+            {
+                Log.Fatal(ex, "Program terminated unexpectedly ({ApplicationContext})!", 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("ApplicationContext", 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();
+        }
     }
 }

src/Services/Ordering/Ordering.BackgroundTasks/Tasks/GracePeriodManagerTask.cs

@@ -20,9 +20,10 @@ namespace Ordering.BackgroundTasks.Tasks
         private readonly BackgroundTaskSettings _settings;
         private readonly IEventBus _eventBus;
 
-        public GracePeriodManagerService(IOptions<BackgroundTaskSettings> settings,
-                                         IEventBus eventBus,
-                                         ILogger<GracePeriodManagerService> logger)
+        public GracePeriodManagerService(
+            IOptions<BackgroundTaskSettings> settings,
+            IEventBus eventBus,
+            ILogger<GracePeriodManagerService> logger)
         {
             _settings = settings?.Value ?? throw new ArgumentNullException(nameof(settings));
             _eventBus = eventBus ?? throw new ArgumentNullException(nameof(eventBus));
@@ -32,27 +33,27 @@ namespace Ordering.BackgroundTasks.Tasks
 
         protected override async Task ExecuteAsync(CancellationToken stoppingToken)
         {
-            _logger.LogDebug($"GracePeriodManagerService is starting.");
+            _logger.LogDebug("GracePeriodManagerService is starting.");
 
-            stoppingToken.Register(() => _logger.LogDebug($"#1 GracePeriodManagerService background task is stopping."));
+            stoppingToken.Register(() => _logger.LogDebug("#1 GracePeriodManagerService background task is stopping."));
 
             while (!stoppingToken.IsCancellationRequested)
             {
-                _logger.LogDebug($"GracePeriodManagerService background task is doing background work.");
+                _logger.LogDebug("GracePeriodManagerService background task is doing background work.");
 
                 CheckConfirmedGracePeriodOrders();
 
                 await Task.Delay(_settings.CheckUpdateTime, stoppingToken);
             }
 
-            _logger.LogDebug($"GracePeriodManagerService background task is stopping.");
+            _logger.LogDebug("GracePeriodManagerService background task is stopping.");
 
             await Task.CompletedTask;
         }
 
         private void CheckConfirmedGracePeriodOrders()
         {
-            _logger.LogDebug($"Checking confirmed grace period orders");
+            _logger.LogDebug("Checking confirmed grace period orders");
 
             var orderIds = GetConfirmedGracePeriodOrders();
 
@@ -60,6 +61,8 @@ namespace Ordering.BackgroundTasks.Tasks
             {
                 var confirmGracePeriodEvent = new GracePeriodConfirmedIntegrationEvent(orderId);
 
+                _logger.LogInformation("----- Publishing integration event: {IntegrationEventId} from {AppName} - ({@IntegrationEvent})", confirmGracePeriodEvent.Id, Program.AppName, confirmGracePeriodEvent);
+
                 _eventBus.Publish(confirmGracePeriodEvent);
             }
         }
@@ -81,7 +84,7 @@ namespace Ordering.BackgroundTasks.Tasks
                 }
                 catch (SqlException exception)
                 {
-                    _logger.LogCritical($"FATAL ERROR: Database connections could not be opened: {exception.Message}");
+                    _logger.LogCritical(exception, "FATAL ERROR: Database connections could not be opened: {Message}", exception.Message);
                 }
 
             }

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"
       }
     }
   },

src/Services/Ordering/Ordering.Infrastructure/OrderingContext.cs

@@ -27,10 +27,12 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.Infrastructure
         private readonly IMediator _mediator;
         private IDbContextTransaction _currentTransaction;
 
-        private OrderingContext(DbContextOptions<OrderingContext> options) : base (options) { }
+        private OrderingContext(DbContextOptions<OrderingContext> options) : base(options) { }
 
         public IDbContextTransaction GetCurrentTransaction => _currentTransaction;
 
+        public bool HasActiveTransaction => _currentTransaction != null;
+
         public OrderingContext(DbContextOptions<OrderingContext> options, IMediator mediator) : base(options)
         {
             _mediator = mediator ?? throw new ArgumentNullException(nameof(mediator));
@@ -47,7 +49,7 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.Infrastructure
             modelBuilder.ApplyConfiguration(new OrderItemEntityTypeConfiguration());
             modelBuilder.ApplyConfiguration(new CardTypeEntityTypeConfiguration());
             modelBuilder.ApplyConfiguration(new OrderStatusEntityTypeConfiguration());
-            modelBuilder.ApplyConfiguration(new BuyerEntityTypeConfiguration()); 
+            modelBuilder.ApplyConfiguration(new BuyerEntityTypeConfiguration());
         }
 
         public async Task<bool> SaveEntitiesAsync(CancellationToken cancellationToken = default(CancellationToken))
@@ -67,17 +69,24 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.Infrastructure
             return true;
         }
 
-        public async Task BeginTransactionAsync()
+        public async Task<IDbContextTransaction> BeginTransactionAsync()
         {
-            _currentTransaction = _currentTransaction ?? await Database.BeginTransactionAsync(IsolationLevel.ReadCommitted);
+            if (_currentTransaction != null) return null;
+
+            _currentTransaction = await Database.BeginTransactionAsync(IsolationLevel.ReadCommitted);
+
+            return _currentTransaction;
         }
 
-        public async Task CommitTransactionAsync()
+        public async Task CommitTransactionAsync(IDbContextTransaction transaction)
         {
+            if (transaction == null) throw new ArgumentNullException(nameof(transaction));
+            if (transaction != _currentTransaction) throw new InvalidOperationException($"Transaction {transaction.TransactionId} is not current");
+
             try
             {
                 await SaveChangesAsync();
-                _currentTransaction?.Commit();
+                transaction.Commit();
             }
             catch
             {
@@ -118,7 +127,7 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.Infrastructure
             var optionsBuilder = new DbContextOptionsBuilder<OrderingContext>()
                 .UseSqlServer("Server=.;Initial Catalog=Microsoft.eShopOnContainers.Services.OrderingDb;Integrated Security=true");
 
-            return new OrderingContext(optionsBuilder.Options,new NoMediator());
+            return new OrderingContext(optionsBuilder.Options, new NoMediator());
         }
 
         class NoMediator : IMediator

src/Services/Ordering/Ordering.SignalrHub/IntegrationEvents/EventHandling/OrderStatusChangedToCancelledIntegrationEventHandler.cs

@@ -1,6 +1,8 @@
 using Microsoft.AspNetCore.SignalR;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
+using Microsoft.Extensions.Logging;
 using Ordering.SignalrHub.IntegrationEvents.Events;
+using Serilog.Context;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -11,18 +13,27 @@ namespace Ordering.SignalrHub.IntegrationEvents.EventHandling
     public class OrderStatusChangedToCancelledIntegrationEventHandler : IIntegrationEventHandler<OrderStatusChangedToCancelledIntegrationEvent>
     {
         private readonly IHubContext<NotificationsHub> _hubContext;
+        private readonly ILogger<OrderStatusChangedToCancelledIntegrationEventHandler> _logger;
 
-        public OrderStatusChangedToCancelledIntegrationEventHandler(IHubContext<NotificationsHub> hubContext)
+        public OrderStatusChangedToCancelledIntegrationEventHandler(
+            IHubContext<NotificationsHub> hubContext,
+            ILogger<OrderStatusChangedToCancelledIntegrationEventHandler> logger)
         {
             _hubContext = hubContext ?? throw new ArgumentNullException(nameof(hubContext));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
 
         public async Task Handle(OrderStatusChangedToCancelledIntegrationEvent @event)
         {
-            await _hubContext.Clients
-                .Group(@event.BuyerName)
-                .SendAsync("UpdatedOrderState", new { OrderId = @event.OrderId, Status = @event.OrderStatus });
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+            {
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+                await _hubContext.Clients
+                    .Group(@event.BuyerName)
+                    .SendAsync("UpdatedOrderState", new { OrderId = @event.OrderId, Status = @event.OrderStatus });
+            }
         }
     }
 }

src/Services/Ordering/Ordering.SignalrHub/IntegrationEvents/EventHandling/OrderStatusChangedToPaidIntegrationEventHandler.cs

@@ -1,6 +1,8 @@
 using Microsoft.AspNetCore.SignalR;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
+using Microsoft.Extensions.Logging;
 using Ordering.SignalrHub.IntegrationEvents.Events;
+using Serilog.Context;
 using System;
 using System.Threading.Tasks;
 
@@ -9,18 +11,27 @@ namespace Ordering.SignalrHub.IntegrationEvents.EventHandling
     public class OrderStatusChangedToPaidIntegrationEventHandler : IIntegrationEventHandler<OrderStatusChangedToPaidIntegrationEvent>
     {
         private readonly IHubContext<NotificationsHub> _hubContext;
+        private readonly ILogger<OrderStatusChangedToPaidIntegrationEventHandler> _logger;
 
-        public OrderStatusChangedToPaidIntegrationEventHandler(IHubContext<NotificationsHub> hubContext)
+        public OrderStatusChangedToPaidIntegrationEventHandler(
+            IHubContext<NotificationsHub> hubContext,
+            ILogger<OrderStatusChangedToPaidIntegrationEventHandler> logger)
         {
             _hubContext = hubContext ?? throw new ArgumentNullException(nameof(hubContext));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
 
         public async Task Handle(OrderStatusChangedToPaidIntegrationEvent @event)
         {
-            await _hubContext.Clients
-                .Group(@event.BuyerName)
-                .SendAsync("UpdatedOrderState", new { OrderId = @event.OrderId, Status = @event.OrderStatus });
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+            {
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+                await _hubContext.Clients
+                    .Group(@event.BuyerName)
+                    .SendAsync("UpdatedOrderState", new { OrderId = @event.OrderId, Status = @event.OrderStatus });
+            }
         }
     }
 }

src/Services/Ordering/Ordering.SignalrHub/IntegrationEvents/EventHandling/OrderStatusChangedToShippedIntegrationEventHandler.cs

@@ -1,6 +1,8 @@
 using Microsoft.AspNetCore.SignalR;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
+using Microsoft.Extensions.Logging;
 using Ordering.SignalrHub.IntegrationEvents.Events;
+using Serilog.Context;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -11,18 +13,27 @@ namespace Ordering.SignalrHub.IntegrationEvents.EventHandling
     public class OrderStatusChangedToShippedIntegrationEventHandler : IIntegrationEventHandler<OrderStatusChangedToShippedIntegrationEvent>
     {
         private readonly IHubContext<NotificationsHub> _hubContext;
+        private readonly ILogger<OrderStatusChangedToShippedIntegrationEventHandler> _logger;
 
-        public OrderStatusChangedToShippedIntegrationEventHandler(IHubContext<NotificationsHub> hubContext)
+        public OrderStatusChangedToShippedIntegrationEventHandler(
+            IHubContext<NotificationsHub> hubContext,
+            ILogger<OrderStatusChangedToShippedIntegrationEventHandler> logger)
         {
             _hubContext = hubContext ?? throw new ArgumentNullException(nameof(hubContext));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
 
         public async Task Handle(OrderStatusChangedToShippedIntegrationEvent @event)
         {
-            await _hubContext.Clients
-                .Group(@event.BuyerName)
-                .SendAsync("UpdatedOrderState", new { OrderId = @event.OrderId, Status = @event.OrderStatus });
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+            {
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+                await _hubContext.Clients
+                    .Group(@event.BuyerName)
+                    .SendAsync("UpdatedOrderState", new { OrderId = @event.OrderId, Status = @event.OrderStatus });
+            }
         }
     }
 }

src/Services/Ordering/Ordering.SignalrHub/IntegrationEvents/EventHandling/OrderStatusChangedToStockConfirmedIntegrationEventHandler.cs

@@ -1,6 +1,8 @@
 using Microsoft.AspNetCore.SignalR;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
+using Microsoft.Extensions.Logging;
 using Ordering.SignalrHub.IntegrationEvents.Events;
+using Serilog.Context;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -12,18 +14,27 @@ namespace Ordering.SignalrHub.IntegrationEvents.EventHandling
         IIntegrationEventHandler<OrderStatusChangedToStockConfirmedIntegrationEvent>
     {
         private readonly IHubContext<NotificationsHub> _hubContext;
+        private readonly ILogger<OrderStatusChangedToStockConfirmedIntegrationEventHandler> _logger;
 
-        public OrderStatusChangedToStockConfirmedIntegrationEventHandler(IHubContext<NotificationsHub> hubContext)
+        public OrderStatusChangedToStockConfirmedIntegrationEventHandler(
+            IHubContext<NotificationsHub> hubContext,
+            ILogger<OrderStatusChangedToStockConfirmedIntegrationEventHandler> logger)
         {
             _hubContext = hubContext ?? throw new ArgumentNullException(nameof(hubContext));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
 
         public async Task Handle(OrderStatusChangedToStockConfirmedIntegrationEvent @event)
         {
-            await _hubContext.Clients
-                .Group(@event.BuyerName)
-                .SendAsync("UpdatedOrderState", new { OrderId = @event.OrderId, Status = @event.OrderStatus });
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+            {
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+                await _hubContext.Clients
+                    .Group(@event.BuyerName)
+                    .SendAsync("UpdatedOrderState", new { OrderId = @event.OrderId, Status = @event.OrderStatus });
+            }
         }
     }
 }

src/Services/Ordering/Ordering.SignalrHub/IntegrationEvents/EventHandling/OrderStatusChangedToSubmittedIntegrationEventHandler.cs

@@ -1,6 +1,8 @@
 using Microsoft.AspNetCore.SignalR;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
+using Microsoft.Extensions.Logging;
 using Ordering.SignalrHub.IntegrationEvents.Events;
+using Serilog.Context;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -12,18 +14,27 @@ namespace Ordering.SignalrHub.IntegrationEvents.EventHandling
         IIntegrationEventHandler<OrderStatusChangedToSubmittedIntegrationEvent>
     {
         private readonly IHubContext<NotificationsHub> _hubContext;
+        private readonly ILogger<OrderStatusChangedToSubmittedIntegrationEventHandler> _logger;
 
-        public OrderStatusChangedToSubmittedIntegrationEventHandler(IHubContext<NotificationsHub> hubContext)
+        public OrderStatusChangedToSubmittedIntegrationEventHandler(
+            IHubContext<NotificationsHub> hubContext,
+            ILogger<OrderStatusChangedToSubmittedIntegrationEventHandler> logger)
         {
             _hubContext = hubContext ?? throw new ArgumentNullException(nameof(hubContext));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
 
         public async Task Handle(OrderStatusChangedToSubmittedIntegrationEvent @event)
         {
-            await _hubContext.Clients
-                .Group(@event.BuyerName)
-                .SendAsync("UpdatedOrderState", new { OrderId = @event.OrderId, Status = @event.OrderStatus });
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+            {
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+                await _hubContext.Clients
+                    .Group(@event.BuyerName)
+                    .SendAsync("UpdatedOrderState", new { OrderId = @event.OrderId, Status = @event.OrderStatus });
+            }
         }
     }
 }

src/Services/Ordering/Ordering.SignalrHub/IntegrationEvents/EventHandling/orderStatusChangedToAwaitingValidationIntegrationEventHandler.cs

@@ -1,5 +1,7 @@
 using Microsoft.AspNetCore.SignalR;
 using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
+using Microsoft.Extensions.Logging;
+using Serilog.Context;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -10,18 +12,27 @@ namespace Ordering.SignalrHub.IntegrationEvents
     public class OrderStatusChangedToAwaitingValidationIntegrationEventHandler : IIntegrationEventHandler<OrderStatusChangedToAwaitingValidationIntegrationEvent>
     {
         private readonly IHubContext<NotificationsHub> _hubContext;
+        private readonly ILogger<OrderStatusChangedToAwaitingValidationIntegrationEventHandler> _logger;
 
-        public OrderStatusChangedToAwaitingValidationIntegrationEventHandler(IHubContext<NotificationsHub> hubContext)
+        public OrderStatusChangedToAwaitingValidationIntegrationEventHandler(
+            IHubContext<NotificationsHub> hubContext,
+            ILogger<OrderStatusChangedToAwaitingValidationIntegrationEventHandler> logger)
         {
             _hubContext = hubContext ?? throw new ArgumentNullException(nameof(hubContext));
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
         }
 
 
         public async Task Handle(OrderStatusChangedToAwaitingValidationIntegrationEvent @event)
         {
-            await _hubContext.Clients
-                .Group(@event.BuyerName)
-                .SendAsync("UpdatedOrderState", new { OrderId = @event.OrderId, Status = @event.OrderStatus });
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+            {
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
+
+                await _hubContext.Clients
+                    .Group(@event.BuyerName)
+                    .SendAsync("UpdatedOrderState", new { OrderId = @event.OrderId, Status = @event.OrderStatus });
+            }
         }
     }
 }

src/Services/Ordering/Ordering.SignalrHub/Ordering.SignalrHub.csproj

@@ -11,23 +11,25 @@
 
   <ItemGroup>
     <PackageReference Include="AspNetCore.HealthChecks.AzureServiceBus" Version="2.2.0" />
-    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
     <PackageReference Include="AspNetCore.HealthChecks.Rabbitmq" Version="2.2.0" />
+    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
     <PackageReference Include="Autofac.Extensions.DependencyInjection" Version="4.2.1" />
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.2.0" />
+    <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.2.1" />
+    <PackageReference Include="Microsoft.ApplicationInsights.DependencyCollector" Version="2.6.1" />
+    <PackageReference Include="Microsoft.ApplicationInsights.Kubernetes" Version="1.0.2" />
+    <PackageReference Include="Microsoft.ApplicationInsights.ServiceFabric" Version="2.2.2" />
+    <PackageReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Microsoft.AspNetCore.Diagnostics.HealthChecks" Version="2.2.0" />
     <PackageReference Include="Microsoft.AspNetCore.HealthChecks" Version="1.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.SignalR" Version="1.1.0" />
     <PackageReference Include="Microsoft.AspNetCore.SignalR.Core" Version="1.1.0" />
     <PackageReference Include="Microsoft.AspNetCore.SignalR.Redis" Version="1.1.0" />
-    <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.2.1" />
-    <PackageReference Include="Microsoft.ApplicationInsights.DependencyCollector" Version="2.6.1" />
-    <PackageReference Include="Microsoft.ApplicationInsights.Kubernetes" Version="1.0.2" />
-    <PackageReference Include="Microsoft.ApplicationInsights.ServiceFabric" Version="2.2.2" />
-    <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" Version="2.2.0-preview3-35497" />
     <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" 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>

src/Services/Ordering/Ordering.SignalrHub/Program.cs

@@ -13,28 +13,67 @@ namespace Ordering.SignalrHub
 {
     public class Program
     {
-        public static void Main(string[] args)
+        public static readonly string Namespace = typeof(Program).Namespace;
+        public static readonly string AppName = Namespace;
+
+        public static int Main(string[] args)
         {
-            BuildWebHost(args).Run();
+            var configuration = GetConfiguration();
+
+            Log.Logger = CreateSerilogLogger(configuration);
+
+            try
+            {
+                Log.Information("Configuring web host ({ApplicationContext})...", AppName);
+                var host = BuildWebHost(configuration, args);
+
+                Log.Information("Starting web host ({ApplicationContext})...", AppName);
+                host.Run();
+
+                return 0;
+            }
+            catch (Exception ex)
+            {
+                Log.Fatal(ex, "Program terminated unexpectedly ({ApplicationContext})!", AppName);
+                return 1;
+            }
+            finally
+            {
+                Log.CloseAndFlush();
+            }
         }
 
-        public static IWebHost BuildWebHost(string[] args) =>
+        private static IWebHost BuildWebHost(IConfiguration configuration, string[] args) =>
             WebHost.CreateDefaultBuilder(args)
+                .CaptureStartupErrors(false)
                 .UseStartup<Startup>()
-                .ConfigureLogging((hostingContext, builder) =>
-                {
-                    builder.AddConfiguration(hostingContext.Configuration.GetSection("Logging"));
-                    builder.AddConsole();
-                    builder.AddDebug();
-                    builder.AddAzureWebAppDiagnostics();
-                })
-                .UseSerilog((builderContext, config) =>
-                {
-                    config
-                        .MinimumLevel.Information()
-                        .Enrich.FromLogContext()
-                        .WriteTo.Console();
-                })
+                .UseConfiguration(configuration)
+                .UseSerilog()
                 .Build();
+
+        private static Serilog.ILogger CreateSerilogLogger(IConfiguration configuration)
+        {
+            var seqServerUrl = configuration["Serilog:SeqServerUrl"];
+
+            return new LoggerConfiguration()
+                .MinimumLevel.Verbose()
+                .Enrich.WithProperty("ApplicationContext", 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();
+        }
+
     }
 }

src/Services/Ordering/Ordering.SignalrHub/Startup.cs

@@ -30,6 +30,8 @@ namespace Ordering.SignalrHub
             Configuration = configuration;
         }
 
+        public IConfiguration Configuration { get; }
+
         // This method gets called by the runtime. Use this method to add services to the container.
         // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
         public IServiceProvider ConfigureServices(IServiceCollection services)
@@ -115,17 +117,18 @@ namespace Ordering.SignalrHub
             return new AutofacServiceProvider(container.Build());
         }
 
-        public IConfiguration Configuration { get; }
-
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory)
         {
-            loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
+            //loggerFactory.AddConsole(Configuration.GetSection("Logging"));
+            //loggerFactory.AddDebug();
+            //loggerFactory.AddAzureWebAppDiagnostics();
+            //loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
 
             var pathBase = Configuration["PATH_BASE"];
             if (!string.IsNullOrEmpty(pathBase))
             {
-                loggerFactory.CreateLogger("init").LogDebug($"Using PATH BASE '{pathBase}'");
+                loggerFactory.CreateLogger<Startup>().LogDebug("Using PATH BASE '{pathBase}'", pathBase);
                 app.UsePathBase(pathBase);
             }
 
@@ -156,13 +159,13 @@ namespace Ordering.SignalrHub
         private void ConfigureEventBus(IApplicationBuilder app)
         {
             var eventBus = app.ApplicationServices.GetRequiredService<IEventBus>();
-            
+
             eventBus.Subscribe<OrderStatusChangedToAwaitingValidationIntegrationEvent, OrderStatusChangedToAwaitingValidationIntegrationEventHandler>();
             eventBus.Subscribe<OrderStatusChangedToPaidIntegrationEvent, OrderStatusChangedToPaidIntegrationEventHandler>();
             eventBus.Subscribe<OrderStatusChangedToStockConfirmedIntegrationEvent, OrderStatusChangedToStockConfirmedIntegrationEventHandler>();
             eventBus.Subscribe<OrderStatusChangedToShippedIntegrationEvent, OrderStatusChangedToShippedIntegrationEventHandler>();
             eventBus.Subscribe<OrderStatusChangedToCancelledIntegrationEvent, OrderStatusChangedToCancelledIntegrationEventHandler>();
-            eventBus.Subscribe<OrderStatusChangedToSubmittedIntegrationEvent, OrderStatusChangedToSubmittedIntegrationEventHandler>();  
+            eventBus.Subscribe<OrderStatusChangedToSubmittedIntegrationEvent, OrderStatusChangedToSubmittedIntegrationEventHandler>();
         }
 
         private void ConfigureAuthService(IServiceCollection services)

src/Services/Ordering/Ordering.SignalrHub/appsettings.json

@@ -1,11 +1,14 @@
 {
   "IdentityUrl": "http://localhost:5105",
-  "Logging": {
-    "IncludeScopes": false,
-    "LogLevel": {
-      "Default": "Trace",
-      "System": "Information",
-      "Microsoft": "Information"
+  "Serilog": {
+    "SeqServerUrl": null,
+    "MinimumLevel": {
+      "Default": "Information",
+      "Override": {
+        "Microsoft": "Warning",
+        "Microsoft.eShopOnContainers": "Information",
+        "System": "Warning"
+      }
     }
   },
   "AzureServiceBusEnabled": false,

src/Services/Ordering/Ordering.UnitTests/Application/IdentifiedCommandHandlerTest.cs

@@ -8,6 +8,7 @@ namespace UnitTest.Ordering.Application
     using MediatR;
     using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands;
     using Microsoft.eShopOnContainers.Services.Ordering.Infrastructure.Idempotency;
+    using Microsoft.Extensions.Logging;
     using Moq;
     using System.Collections;
     using System.Collections.Generic;
@@ -17,11 +18,13 @@ namespace UnitTest.Ordering.Application
     {
         private readonly Mock<IRequestManager> _requestManager;
         private readonly Mock<IMediator> _mediator;
+        private readonly Mock<ILogger<IdentifiedCommandHandler<CreateOrderCommand, bool>>> _loggerMock;
 
         public IdentifiedCommandHandlerTest()
         {
             _requestManager = new Mock<IRequestManager>();
             _mediator = new Mock<IMediator>();
+            _loggerMock = new Mock<ILogger<IdentifiedCommandHandler<CreateOrderCommand, bool>>>();
         }
 
         [Fact]
@@ -38,7 +41,7 @@ namespace UnitTest.Ordering.Application
                .Returns(Task.FromResult(true));
 
             //Act
-            var handler = new IdentifiedCommandHandler<CreateOrderCommand, bool>(_mediator.Object, _requestManager.Object);
+            var handler = new IdentifiedCommandHandler<CreateOrderCommand, bool>(_mediator.Object, _requestManager.Object, _loggerMock.Object);
             var cltToken = new System.Threading.CancellationToken();
             var result = await handler.Handle(fakeOrderCmd, cltToken);
 
@@ -61,7 +64,7 @@ namespace UnitTest.Ordering.Application
                .Returns(Task.FromResult(true));
 
             //Act
-            var handler = new IdentifiedCommandHandler<CreateOrderCommand, bool>(_mediator.Object, _requestManager.Object);
+            var handler = new IdentifiedCommandHandler<CreateOrderCommand, bool>(_mediator.Object, _requestManager.Object, _loggerMock.Object);
             var cltToken = new System.Threading.CancellationToken();
             var result = await handler.Handle(fakeOrderCmd, cltToken);
 

src/Services/Ordering/Ordering.UnitTests/Application/NewOrderCommandHandlerTest.cs

@@ -13,6 +13,7 @@ namespace UnitTest.Ordering.Application
     using global::Ordering.API.Application.IntegrationEvents;
     using global::Ordering.API.Application.Models;
     using MediatR;
+    using Microsoft.Extensions.Logging;
     using System.Collections;
     using System.Collections.Generic;
     using Xunit;
@@ -50,8 +51,9 @@ namespace UnitTest.Ordering.Application
 
             _identityServiceMock.Setup(svc => svc.GetUserIdentity()).Returns(buyerId);
 
+            var LoggerMock = new Mock<ILogger<CreateOrderCommandHandler>>();
             //Act
-            var handler = new CreateOrderCommandHandler(_mediator.Object, _orderingIntegrationEventService.Object, _orderRepositoryMock.Object, _identityServiceMock.Object);
+            var handler = new CreateOrderCommandHandler(_mediator.Object, _orderingIntegrationEventService.Object, _orderRepositoryMock.Object, _identityServiceMock.Object, LoggerMock.Object);
             var cltToken = new System.Threading.CancellationToken();
             var result = await handler.Handle(fakeOrderCmd, cltToken);
 

src/Services/Ordering/Ordering.UnitTests/Application/OrdersWebApiTest.cs

@@ -4,6 +4,7 @@ using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Commands;
 using Microsoft.eShopOnContainers.Services.Ordering.API.Application.Queries;
 using Microsoft.eShopOnContainers.Services.Ordering.API.Controllers;
 using Microsoft.eShopOnContainers.Services.Ordering.API.Infrastructure.Services;
+using Microsoft.Extensions.Logging;
 using Moq;
 using Ordering.API.Application.Commands;
 using System;
@@ -19,12 +20,14 @@ namespace UnitTest.Ordering.Application
         private readonly Mock<IMediator> _mediatorMock;
         private readonly Mock<IOrderQueries> _orderQueriesMock;
         private readonly Mock<IIdentityService> _identityServiceMock;
+        private readonly Mock<ILogger<OrdersController>> _loggerMock;
 
         public OrdersWebApiTest()
         {
             _mediatorMock = new Mock<IMediator>();
             _orderQueriesMock = new Mock<IOrderQueries>();
             _identityServiceMock = new Mock<IIdentityService>();
+            _loggerMock = new Mock<ILogger<OrdersController>>();
         }
 
         [Fact]
@@ -35,7 +38,7 @@ namespace UnitTest.Ordering.Application
                 .Returns(Task.FromResult(true));
 
             //Act
-            var orderController = new OrdersController(_mediatorMock.Object, _orderQueriesMock.Object, _identityServiceMock.Object);
+            var orderController = new OrdersController(_mediatorMock.Object, _orderQueriesMock.Object, _identityServiceMock.Object, _loggerMock.Object);
             var actionResult = await orderController.CancelOrderAsync(new CancelOrderCommand(1), Guid.NewGuid().ToString()) as OkResult;
 
             //Assert
@@ -51,7 +54,7 @@ namespace UnitTest.Ordering.Application
                 .Returns(Task.FromResult(true));
 
             //Act
-            var orderController = new OrdersController(_mediatorMock.Object, _orderQueriesMock.Object, _identityServiceMock.Object);
+            var orderController = new OrdersController(_mediatorMock.Object, _orderQueriesMock.Object, _identityServiceMock.Object, _loggerMock.Object);
             var actionResult = await orderController.CancelOrderAsync(new CancelOrderCommand(1), String.Empty) as BadRequestResult;
 
             //Assert
@@ -66,7 +69,7 @@ namespace UnitTest.Ordering.Application
                 .Returns(Task.FromResult(true));
 
             //Act
-            var orderController = new OrdersController(_mediatorMock.Object, _orderQueriesMock.Object, _identityServiceMock.Object);
+            var orderController = new OrdersController(_mediatorMock.Object, _orderQueriesMock.Object, _identityServiceMock.Object, _loggerMock.Object);
             var actionResult = await orderController.ShipOrderAsync(new ShipOrderCommand(1), Guid.NewGuid().ToString()) as OkResult;
 
             //Assert
@@ -82,7 +85,7 @@ namespace UnitTest.Ordering.Application
                 .Returns(Task.FromResult(true));
 
             //Act
-            var orderController = new OrdersController(_mediatorMock.Object, _orderQueriesMock.Object, _identityServiceMock.Object);
+            var orderController = new OrdersController(_mediatorMock.Object, _orderQueriesMock.Object, _identityServiceMock.Object, _loggerMock.Object);
             var actionResult = await orderController.ShipOrderAsync(new ShipOrderCommand(1), String.Empty) as BadRequestResult;
 
             //Assert
@@ -102,7 +105,7 @@ namespace UnitTest.Ordering.Application
                 .Returns(Task.FromResult(fakeDynamicResult));
 
             //Act
-            var orderController = new OrdersController(_mediatorMock.Object, _orderQueriesMock.Object, _identityServiceMock.Object);
+            var orderController = new OrdersController(_mediatorMock.Object, _orderQueriesMock.Object, _identityServiceMock.Object, _loggerMock.Object);
             var actionResult = await orderController.GetOrdersAsync();
 
             //Assert
@@ -119,7 +122,7 @@ namespace UnitTest.Ordering.Application
                 .Returns(Task.FromResult(fakeDynamicResult));
 
             //Act
-            var orderController = new OrdersController(_mediatorMock.Object, _orderQueriesMock.Object, _identityServiceMock.Object);
+            var orderController = new OrdersController(_mediatorMock.Object, _orderQueriesMock.Object, _identityServiceMock.Object, _loggerMock.Object);
             var actionResult = await orderController.GetOrderAsync(fakeOrderId) as OkObjectResult;
 
             //Assert
@@ -135,7 +138,7 @@ namespace UnitTest.Ordering.Application
                 .Returns(Task.FromResult(fakeDynamicResult));
 
             //Act
-            var orderController = new OrdersController(_mediatorMock.Object, _orderQueriesMock.Object, _identityServiceMock.Object);
+            var orderController = new OrdersController(_mediatorMock.Object, _orderQueriesMock.Object, _identityServiceMock.Object, _loggerMock.Object);
             var actionResult = await orderController.GetCardTypesAsync();
 
             //Assert

src/Services/Payment/Payment.API/IntegrationEvents/EventHandling/OrderStatusChangedToStockConfirmedIntegrationEventHandler.cs

@@ -2,45 +2,58 @@
 {
     using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
     using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Events;
+    using Microsoft.Extensions.Logging;
     using Microsoft.Extensions.Options;
     using Payment.API.IntegrationEvents.Events;
+    using Serilog.Context;
     using System.Threading.Tasks;
 
-    public class OrderStatusChangedToStockConfirmedIntegrationEventHandler : 
+    public class OrderStatusChangedToStockConfirmedIntegrationEventHandler :
         IIntegrationEventHandler<OrderStatusChangedToStockConfirmedIntegrationEvent>
     {
         private readonly IEventBus _eventBus;
         private readonly PaymentSettings _settings;
+        private readonly ILogger<OrderStatusChangedToStockConfirmedIntegrationEventHandler> _logger;
 
-        public OrderStatusChangedToStockConfirmedIntegrationEventHandler(IEventBus eventBus, 
-            IOptionsSnapshot<PaymentSettings> settings)
+        public OrderStatusChangedToStockConfirmedIntegrationEventHandler(
+            IEventBus eventBus,
+            IOptionsSnapshot<PaymentSettings> settings,
+            ILogger<OrderStatusChangedToStockConfirmedIntegrationEventHandler> logger)
         {
             _eventBus = eventBus;
             _settings = settings.Value;
-        }         
+            _logger = logger ?? throw new System.ArgumentNullException(nameof(logger));
+        }
 
         public async Task Handle(OrderStatusChangedToStockConfirmedIntegrationEvent @event)
         {
-            IntegrationEvent orderPaymentIntegrationEvent;
+            using (LogContext.PushProperty("IntegrationEventContext", $"{@event.Id}-{Program.AppName}"))
+            {
+                _logger.LogInformation("----- Handling integration event: {IntegrationEventId} at {AppName} - ({@IntegrationEvent})", @event.Id, Program.AppName, @event);
 
-            //Business feature comment:
-            // When OrderStatusChangedToStockConfirmed Integration Event is handled.
-            // Here we're simulating that we'd be performing the payment against any payment gateway
-            // Instead of a real payment we just take the env. var to simulate the payment 
-            // The payment can be successful or it can fail
+                IntegrationEvent orderPaymentIntegrationEvent;
 
-            if (_settings.PaymentSucceded)
-            {
-                orderPaymentIntegrationEvent = new OrderPaymentSuccededIntegrationEvent(@event.OrderId);
-            }
-            else
-            {
-                orderPaymentIntegrationEvent = new OrderPaymentFailedIntegrationEvent(@event.OrderId);
-            }
+                //Business feature comment:
+                // When OrderStatusChangedToStockConfirmed Integration Event is handled.
+                // Here we're simulating that we'd be performing the payment against any payment gateway
+                // Instead of a real payment we just take the env. var to simulate the payment 
+                // The payment can be successful or it can fail
+
+                if (_settings.PaymentSucceded)
+                {
+                    orderPaymentIntegrationEvent = new OrderPaymentSuccededIntegrationEvent(@event.OrderId);
+                }
+                else
+                {
+                    orderPaymentIntegrationEvent = new OrderPaymentFailedIntegrationEvent(@event.OrderId);
+                }
 
-            _eventBus.Publish(orderPaymentIntegrationEvent);
+                _logger.LogInformation("----- Publishing integration event: {IntegrationEventId} from {AppName} - ({@IntegrationEvent})", orderPaymentIntegrationEvent.Id, Program.AppName, orderPaymentIntegrationEvent);
 
-            await Task.CompletedTask;
+                _eventBus.Publish(orderPaymentIntegrationEvent);
+
+                await Task.CompletedTask;
+            }
         }
     }
 }

src/Services/Payment/Payment.API/Payment.API.csproj

@@ -7,20 +7,23 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
     <PackageReference Include="AspNetCore.HealthChecks.AzureServiceBus" Version="2.2.0" />
     <PackageReference Include="AspNetCore.HealthChecks.Rabbitmq" Version="2.2.0" />
+    <PackageReference Include="AspNetCore.HealthChecks.UI.Client" Version="2.2.2" />
     <PackageReference Include="Autofac.Extensions.DependencyInjection" Version="4.2.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.2.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.DependencyCollector" Version="2.6.1" />
     <PackageReference Include="Microsoft.ApplicationInsights.Kubernetes" Version="1.0.2" />
     <PackageReference Include="Microsoft.ApplicationInsights.ServiceFabric" Version="2.2.2" />
+    <PackageReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Microsoft.AspNetCore.Diagnostics.HealthChecks" Version="2.2.0" />
-    <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" Version="2.2.0-preview3-35497" />
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.AzureKeyVault" Version="2.2.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.AzureAppServices" 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>
     <ProjectReference Include="..\..\..\BuildingBlocks\EventBus\EventBusRabbitMQ\EventBusRabbitMQ.csproj" />

src/Services/Payment/Payment.API/Program.cs

@@ -4,40 +4,85 @@ using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 using Serilog;
+using System;
 using System.IO;
 
 namespace Payment.API
 {
     public class Program
     {
-        public static void Main(string[] args)
+        public static readonly string Namespace = typeof(Program).Namespace;
+        public static readonly string AppName = Namespace;
+
+        public static int Main(string[] args)
         {
-            BuildWebHost(args).Run();
+            var configuration = GetConfiguration();
+
+            Log.Logger = CreateSerilogLogger(configuration);
+
+            try
+            {
+                Log.Information("Configuring web host ({ApplicationContext})...", AppName);
+                var host = BuildWebHost(configuration, args);
+
+                Log.Information("Starting web host ({ApplicationContext})...", AppName);
+                host.Run();
+
+                return 0;
+            }
+            catch (Exception ex)
+            {
+                Log.Fatal(ex, "Program terminated unexpectedly ({ApplicationContext})!", AppName);
+                return 1;
+            }
+            finally
+            {
+                Log.CloseAndFlush();
+            }
         }
 
-        public static IWebHost BuildWebHost(string[] args) =>
+        private static IWebHost BuildWebHost(IConfiguration configuration, string[] args) =>
             WebHost.CreateDefaultBuilder(args)
-                .UseContentRoot(Directory.GetCurrentDirectory())
+                .CaptureStartupErrors(false)
                 .UseStartup<Startup>()
-                .ConfigureAppConfiguration((builderContext, config) =>
-                {
-                    config.AddEnvironmentVariables();
-                })
-                .ConfigureLogging((hostingContext, builder) =>
-                {
-                    builder.AddConfiguration(hostingContext.Configuration.GetSection("Logging"));
-                    builder.AddConsole();
-                    builder.AddDebug();
-                    builder.AddAzureWebAppDiagnostics();
-                })
                 .UseApplicationInsights()
-                .UseSerilog((builderContext, config) =>
-                {
-                    config
-                        .MinimumLevel.Information()
-                        .Enrich.FromLogContext()
-                        .WriteTo.Console();
-                })
+                .UseContentRoot(Directory.GetCurrentDirectory())
+                .UseConfiguration(configuration)
+                .UseSerilog()
                 .Build();
+
+        private static Serilog.ILogger CreateSerilogLogger(IConfiguration configuration)
+        {
+            var seqServerUrl = configuration["Serilog:SeqServerUrl"];
+
+            return new LoggerConfiguration()
+                .MinimumLevel.Verbose()
+                .Enrich.WithProperty("ApplicationContext", 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();
+
+            var config = builder.Build();
+
+            if (config.GetValue<bool>("UseVault", false))
+            {
+                builder.AddAzureKeyVault(
+                    $"https://{config["Vault:Name"]}.vault.azure.net/",
+                    config["Vault:ClientId"],
+                    config["Vault:ClientSecret"]);
+            }
+
+            return builder.Build();
+        }
     }
-}
+}

src/Services/Payment/Payment.API/Startup.cs

@@ -91,7 +91,8 @@ namespace Payment.API
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
         {
-            loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
+            //loggerFactory.AddAzureWebAppDiagnostics();
+            //loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
 
             var pathBase = Configuration["PATH_BASE"];
             if (!string.IsNullOrEmpty(pathBase))

src/Services/Payment/Payment.API/appsettings.json

@@ -1,8 +1,13 @@
 {
-  "Logging": {
-    "IncludeScopes": false,
-    "LogLevel": {
-      "Default": "Warning"
+  "Serilog": {
+    "SeqServerUrl": null,
+    "MinimumLevel": {
+      "Default": "Information",
+      "Override": {
+        "Microsoft": "Warning",
+        "Microsoft.eShopOnContainers": "Information",
+        "System": "Warning"
+      }
     }
   },
   "PaymentSucceded": true,

src/Web/WebMVC/Infrastructure/WebContextSeed.cs

@@ -15,7 +15,7 @@ namespace WebMVC.Infrastructure
     {
         public static void Seed(IApplicationBuilder applicationBuilder, IHostingEnvironment env, ILoggerFactory loggerFactory)
         {
-            var log = loggerFactory.CreateLogger("WebMVC seed");
+            var log = loggerFactory.CreateLogger<WebContextSeed>();
 
             var settings = (AppSettings)applicationBuilder
                 .ApplicationServices.GetRequiredService<IOptions<AppSettings>>().Value;
@@ -39,7 +39,7 @@ namespace WebMVC.Infrastructure
                 string overrideCssFile = Path.Combine(contentRootPath, "Setup", "override.css");
                 if (!File.Exists(overrideCssFile))
                 {
-                    log.LogError($" override css file '{overrideCssFile}' does not exists.");
+                    log.LogError("Override css file '{FileName}' does not exists.", overrideCssFile);
                     return;
                 }
 
@@ -48,7 +48,7 @@ namespace WebMVC.Infrastructure
             }
             catch (Exception ex)
             {
-                log.LogError($"Exception in method GetPreconfiguredCSS WebMVC. Exception Message={ex.Message}");
+                log.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message);
             }
         }
 
@@ -59,7 +59,7 @@ namespace WebMVC.Infrastructure
                 string imagesZipFile = Path.Combine(contentRootPath, "Setup", "images.zip");
                 if (!File.Exists(imagesZipFile))
                 {
-                    log.LogError($" zip file '{imagesZipFile}' does not exists.");
+                    log.LogError("Zip file '{ZipFileName}' does not exists.", imagesZipFile);
                     return;
                 }
 
@@ -81,14 +81,14 @@ namespace WebMVC.Infrastructure
                         }
                         else
                         {
-                            log.LogWarning($"Skip file '{entry.Name}' in zipfile '{imagesZipFile}'");
+                            log.LogWarning("Skipped file '{FileName}' in zipfile '{ZipFileName}'", entry.Name, imagesZipFile);
                         }
                     }
                 }
             }
             catch ( Exception ex )
             {
-                log.LogError($"Exception in method GetPreconfiguredImages WebMVC. Exception Message={ex.Message}");
+                log.LogError(ex, "EXCEPTION ERROR: {Message}", ex.Message);
             }
         }