Implementing Custom Telemetry Capture

We’ll create a simple example that will allow us to not only see how the OpenTelemetry SDK works but also how Meter objects can be used to house many different counters and data points:

Setting up the project

1. We create a new minimal API project in Visual Studio or with the dotnet command line. Here’s the screenshot for the new minimal API project:

  Here’s the screenshot for the dotnet command-line interface:

2. We have to be sure to uncheck the “Use controllers” checkbox to use minimal APIs if using the new project dialog from Visual Studio.

3. We add a NuGet reference to System.Diagnostics.DiagnosticSource and OpenTelemetry.Instrumentation.EventCount ...