Util Application Logging

Purpose

Helper Utility for Standardized Application Logging through Serilog

Usage

Install NuGet Package in an application
Set LogLevel and Log Output Type (Console, FileLog, ElasticLog) in appsettings.json as shown below
- ConsoleLog -> Enabled (set log output as console). For Cloud Applications, it should be true, so all logs can be scrapped/read through prometheus and push to Grafana
- FileLog -> Enabled (set log output as file). For IIS hosted applications, it should be true, so all logs can be created at logs\File folder (performance-demo-api-development-20220629, usage-demo-api-development-20220629)
- ElasticLog -> Enabled (set log output to Elastic). This can be used to directly output logs to Elastic by providing valid Url.

  "Serilog": {
    "MinimumLevel": {
      "Default": "Information",
      "Override": {
        "Microsoft": "Warning",
        "System": "Warning"
      }
    },
    "ConsoleLog": {
      "Enabled": true
    },
    "FileLog": {
      "Enabled": false
    },
    "ElasticLog": {
      "Enabled": false,
      "Url": "http://localhost:9200"
    }
  },
  "AppSettings": {
    "ApplicationName": "demo-api", // Reflected in a log as ApplicationName property
    "ApplicationVersion": "1.0.0" // Reflected in a log as ApplicationVersion property
  }

_logger.LogInformationExtension($"Get Product By Id: {id}");

Extension Methods

LogTraceExtension
LogDebugExtension
LogInformationExtension
LogWarningExtension
LogErrorExtension
LogCriticalExtension
LogRoutePerformance
LogUnauthorizedAccess

** Note: We have implemented extension methods to improve performance in logging as per Microsoft's Guideline.

High-performance logging with LoggerMessage in ASP.NET Core - https://docs.microsoft.com/en-us/aspnet/core/fundamentals/logging/loggermessage
LoggingHelpers Performance Measurement - https://www.stevejgordon.co.uk/high-performance-logging-in-net-core

Output

Information Log

{
   "Timestamp":"2022-07-20T17:53:34.4987477Z",
   "LogLevel":"Information",
   "Message":"Get Product By Id: 1",
   "ActionName":"Demo.Api.Controllers.ProductController.GetById (Demo.Api)",
   "RequestPath":"/api/v1.0/products/1",
   "ApplicationName":"demo-api",
   "ApplicationVersion":"1.0",
   "Environment":"Development",
   "LoggerName":"Demo.Util",
   "RequestMethod":"GET",
   "Referer":"https://localhost:5001/swagger/index.html",
   "CorrelationId":"5761bcd4-b19b-4cd7-a055-3baec12ecf71",
   "HostName":"{HostValue}",
   "ClientIp":"::1",
   "ClientAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 Edg/103.0.1264.62",
   "ProcessId":24788,
   "ProcessName":"Demo.Api",
   "ThreadId":12,
   "ServiceName":"products",
   "ServiceVersion":"1.0"
}

Error Log

{
   "Timestamp":"2022-07-20T17:53:34.6974606Z",
   "LogLevel":"Error",
   "Message":"Exception Occurred: Test Exception -- ErrorId: 9f517917-56a0-4276-af20-82571ac2a526",
   "ErrorId":"9f517917-56a0-4276-af20-82571ac2a526",
   "ErrorMessage":"Test Exception",
   "ExceptionName":"ApplicationException",
   "ExceptionSource":"Demo.Business",
   "StackTrace":[
      "   at Demo.Business.Services.ProductService.GetById(Int32 id) in C:\\Vishal\\Projects\\Demo\\src\\Demo.Business\\Services\\ProductService.cs:line 31",
      "   at Demo.Api.Controllers.ProductController.GetById(Int32 id) in C:\\Vishal\\Projects\\Demo\\src\\Demo.Api\\Controllers\\ProductController.cs:line 65",
      "   at lambda_method9(Closure , Object )",
      "   at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.AwaitableObjectResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)",
      "   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeActionMethodAsync>g__Logged|12_1(ControllerActionInvoker invoker)",
      "   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeNextActionFilterAsync>g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)",
      "   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)",
      "   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)",
      "   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeInnerFilterAsync()",
      "--- End of stack trace from previous location ---",
      "   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeFilterPipelineAsync>g__Awaited|20_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)",
      "   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Logged|17_1(ResourceInvoker invoker)",
      "   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Logged|17_1(ResourceInvoker invoker)",
      "   at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)",
      "   at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)",
      "   at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext)",
      "   at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider)",
      "   at Demo.Api.Middleware.ApiExceptionMiddleware.Invoke(HttpContext context) in C:\\Vishal\\Projects\\Demo\\src\\Demo.Api\\Middleware\\ApiExceptionMiddleware.cs:line 25"
   ],
   "RequestPath":"/api/v1.0/products/1",
   "ApplicationName":"demo-api",
   "ApplicationVersion":"1.0",
   "Environment":"Development",
   "LoggerName":"Demo.Util",
   "RequestMethod":"GET",
   "Referer":"https://localhost:5001/swagger/index.html",
   "CorrelationId":"5761bcd4-b19b-4cd7-a055-3baec12ecf71",
   "HostName":"{HostValue}",
   "ClientIp":"::1",
   "ClientAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 Edg/103.0.1264.62",
   "ProcessId":24788,
   "ProcessName":"Demo.Api",
   "ThreadId":12,
   "ServiceName":"products",
   "ServiceVersion":"1.0"
}

Performance Log

{
   "Timestamp":"2022-07-20T18:05:02.7626795Z",
   "LogLevel":"Information",
   "Message":"/api/v1.0/products/1 - GET - code took 143 milliseconds.",
   "Duration":143,
   "ActionName":"Demo.Api.Controllers.ProductController.GetById (Demo.Api)",
   "RequestPath":"/api/v1.0/products/1",
   "ApplicationName":"demo-api",
   "ApplicationVersion":"1.0",
   "Environment":"Development",
   "LoggerName":"Demo.Util",
   "RequestMethod":"GET",
   "Referer":"https://localhost:5001/swagger/index.html",
   "CorrelationId":"3a5f9835-fb58-416d-a16f-dedb98929c9b",
   "HostName":"{HostValue}",
   "ClientIp":"::1",
   "ClientAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 Edg/103.0.1264.62",
   "ProcessId":36136,
   "ProcessName":"Demo.Api",
   "ThreadId":5,
   "ServiceName":"products",
   "ServiceVersion":"1.0"
}

Unauthorized Access Log

{
   "Timestamp":"2022-07-20T18:21:41.3347276Z",
   "LogLevel":"Fatal",
   "Message":"Unauthorized Access - Authentication - Token is NULL",
   "EventType":"Authentication",
   "Description":"Token is NULL",
   "ActionName":"Demo.Api.Controllers.ProductController.GetById (Demo.Api)",
   "RequestPath":"/api/v1.0/products/1",
   "ApplicationName":"demo-api",
   "ApplicationVersion":"1.0",
   "Environment":"Development",
   "LoggerName":"Demo.Util",
   "RequestMethod":"GET",
   "Referer":"https://localhost:5001/swagger/index.html",
   "CorrelationId":"5bc969d6-7283-4440-90e8-2a21fd8e7d76",
   "HostName":"{HostName}",
   "ClientIp":"::1",
   "ClientAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 Edg/103.0.1264.62",
   "ProcessId":18760,
   "ProcessName":"Demo.Api",
   "ThreadId":9,
   "ServiceName":"products",
   "ServiceVersion":"1.0"
}

Name		Name	Last commit message	Last commit date
.github/workflows		.github/workflows
src/Util.Application.Logging		src/Util.Application.Logging
.gitignore		.gitignore
README.md		README.md
Util.Application.Logging.sln		Util.Application.Logging.sln

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