fake-go-otel-usage.go

import (
        //... other imports
         "go.opentelemetry.io/otel"
         "go.opentelemetry.io/otel/attribute"
         "go.opentelemetry.io/otel/trace"
)

var tracer = otel.Tracer("MyTracerName")

//...

func fakeMostRelevantColumns(ctx context.Context, prompt string) {
        ctx, span := tracer.Start(ctx, "queryml.MostRelevantColumns")
        defer span.End()

        // get columns
        fakeCallEmbeddings(ctx)
        fakeSaveInRedisCache(ctx)

        // nlq embedding
        fakeCallEmbeddings(ctx)

        // columns come after 'COLUMNS:' in prompt and end with a newline
        // take a slice from there and end it at the newline
        columns := strings.Split(prompt, "COLUMNS:")[1]
        columns = strings.Split(columns, "\n")[0]

        str := "[" + columns + "]"

        span.SetAttributes(
                attribute.String("app.nlq.most_relevant_columns", str),
        )
}