ViThor.HttpTracing 0.2.0

ViThor HTTP Tracing

A small package for tracing HTTP requests between dotnet microservices.

Sample of the log:

info: Vithor.Filters.LoggingFilter[0]
      [ced6398d-36a2-4f0c-80c2-c78e91274d0d] Request from [Username/Anonymous] to Controller/Action with query parameters: [] and arguments: {
        "id": 5
      }
info: Vithor.Filters.LoggingFilter[0]
      [ced6398d-36a2-4f0c-80c2-c78e91274d0d] Response from [Username/Anonymous] to Controller/Action with result: {
        "id": 5,
        "name": "Test",
        "isComplete": true
      }

[ced6398d-36a2-4f0c-80c2-c78e91274d0d] is a tracking code that can be received in the header with the term X-Correlation-ID.

If an X-Correlation-ID is not passed then this library will generate a random value to track request and response.

Installation

Install the package from NuGet:

dotnet add package ViThor.HttpTracing

Usage

Add in Program.cs:

using Vithor.HttpTracing.Filters;

builder.Services.AddControllers(options =>
{
    options.Filters.Add<ViThorTraceFilter>();
});

The above filter will retrieve the TraceID , log the request and the response.

If your API has to pass the TraceID to another service, you also need to add the following line in Program.cs:

builder.Services.AddHttpContextAccessor();

And, your controller needs to extend from ViThorControllerBase:

public class TodoController : ViThorControllerBase 
{
    private readonly HttpClient _httpClient;

    public TodoController(HttpClient httpClient, IHttpContextAccessor httpContextAccessor) : base(httpContextAccessor)
    {
        _httpClient = httpClient;
        _httpClient.DefaultRequestHeaders.Add("X-Correlation-ID", this.CorrelationId);
    }
}

Sample

Running the sample

dotnet run --project Samples/ViThor.HttpTracing.Sample.AppOne/ViThor.HttpTracing.Sample.AppOne.csproj
dotnet run --project Samples/ViThor.HttpTracing.Sample.AppTwo/ViThor.HttpTracing.Sample.AppTwo.csproj

Testing the sample

Swagger

The sample project has Swagger configured. To access it, run the API and access the following URL:

http://localhost:5000/swagger/index.html

Curl

Request without passing the X-Correlation-ID:

curl --location --request GET 'http://localhost:5000/Todo'

Request passing the X-Correlation-ID:

curl --location --request GET 'http://localhost:5000/Todo' \
--header 'X-Correlation-ID: ced6398d-36a2-4f0c-80c2-c78e91274d0d'

You will be able to view the content of the HTTP request and response in both applications, with a unique TraceID.

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

License

MIT