OpenTelemetry

Example: Manual Span Creation

const tracer = opentelemetry.trace.getTracer('payment-service');

async function processPayment(userId, amount) {
    const span = tracer.startSpan('process_payment');
    span.setAttributes({
        'user.id': userId,
        'payment.amount': amount,
        'payment.currency': 'USD'
    });
    
    try {
        // Payment processing logic
        const result = await paymentGateway.charge(amount);
        span.setStatus({ code: SpanStatusCode.OK });
        return result;
    } catch (error) {
        span.setStatus({ 
            code: SpanStatusCode.ERROR,
            message: error.message 
        });
        throw error;
    } finally {
        span.end();
    }
}