Enabling tracing in OpenTelemetry

package main

import (
    "context"
    "database/sql"

    "github.com/ydb-platform/ydb-go-sdk/v3"
    "github.com/ydb-platform/ydb-go-sdk/v3/trace"

    ydbOtel "github.com/ydb-platform/ydb-go-sdk-otel"
    ydbZap "github.com/ydb-platform/ydb-go-sdk-zap"
    otelTrace "go.opentelemetry.io/otel/sdk/trace"
)

func main() {
    ...
    tracerProvider := otelTrace.NewTracerProvider(
        // WithBatcher registers the exporter with the TracerProvider.
        // The exporter must implement the SpanExporter interface.
        // You can use any OpenTelemetry exporter (Jaeger, Zipkin, etc).
        otelTrace.WithBatcher(exp),
        // WithResource attaches metadata (like service name and environment) to all spans
        // created by this TracerProvider. Use resource.NewWithAttributes with standard
        // semantic keys such as semconv.ServiceNameKey.
        otelTrace.WithResource(resource.NewWithAttributes(res)),
    )   
    defer tracerProvider.Shutdown(ctx)

    // Set global tracer of this application.
    otel.SetTracerProvider(tracerProvider)

    // Create a root span.
    ctx, span := traceProvider.Tracer("ydb-go-sdk-example").Start(context.Background(), "client")
    defer span.End()   

    // If you want to see otel-trace-id in the logs, 
    // it’s important to connect the adapters in a specific order — first otel, then logger.
    nativeDriver, err := ydb.Open(ctx,
        os.Getenv("YDB_CONNECTION_STRING"),
        ydbOtel.WithTraces(ydbOtel.WithDetails(trace.DetailsAll)),
        ydbZap.WithTraces(logger, trace.DetailsAll),
    )
    if err != nil {
        panic(err)
    }
    defer nativeDriver.Close(ctx)   
    
    connector, err := ydb.Connector(nativeDriver)
    if err != nil {
        panic(err)
    }   
    db := sql.OpenDB(connector)
    defer db.Close()
    ...
}