traceapm/src/metrics.js

SDK for OpenTelemetry auto-instrumentation and OTLP export for Node.js apps.

const { metrics, context, trace } = require('@opentelemetry/api');

const meter = metrics.getMeter('custom-metrics');

const httpRequestDuration = meter.createHistogram('http_request_duration_custom', {
  description: 'Custom HTTP request duration with trace and span IDs',
});

function recordHttpRequestDuration(durationMs, attributes = {}) {
  const currentSpan = trace.getSpan(context.active());
  if (currentSpan) {
    const spanContext = currentSpan.spanContext();
    attributes.trace_id = spanContext.traceId;
    attributes.span_id = spanContext.spanId;
  }
  httpRequestDuration.record(durationMs, attributes);
}

module.exports = { recordHttpRequestDuration };