observability

func FuncCall ¶

func FuncCall(ctx context.Context) func()

FuncCall adds observability to a function call.

It should be called at the very beginning of the function, and returned function should be called at exit. The returned function must not be passed or stored. The only valid way to use FuncCall is:

func foo(ctx context.Context) {
    defer FuncCall(ctx)()
    // ...

For the Go execution tracer, FuncCall creates a new region for the function call and attaches it to the task in the context (or background task).

func SetupOtel ¶

func SetupOtel(service string) func(context.Context) error

SetupOtel sets up OpenTelemetry exporter with fixed values.