Multiple calls to getRandomValues

[gedu]

Is there an existing issue for this?

• I have checked for existing issues https://github.com/getsentry/sentry-javascript/issues
• I have reviewed the documentation https://docs.sentry.io/
• I am using the latest SDK release https://github.com/getsentry/sentry-javascript/releases

How do you use Sentry?

Sentry Saas (sentry.io)

Which SDK are you using?

@sentry/react-native

SDK Version

10.15.0

Framework Version

@sentry/react-native": "7.2.0"

Link to Sentry event

No response

Reproduction Example/SDK Setup

Sentry.init({
  dsn: SENTRY_DSN,
  environment:
    __DEV__ || process.env.E2E_MODE === 'true' ? 'development' : 'production',
  release,
  dist,

  // Keep disabled to avoid attaching stacktraces to non-exception events (can affect event titles in UI).
  attachStacktrace: false,

  // Generic targets (no company/app domains).
  tracePropagationTargets: ['localhost'],

  // Keep the same behavior as the original wrapper.
  tracesSampleRate: 1,

  integrations: [
    routingInstrumentation,
    Sentry.hermesProfilingIntegration?.({ platformProfilers: false }),
    Sentry.breadcrumbsIntegration?.({
      dom: false,
      fetch: false,
      history: false,
      sentry: false,
      xhr: false,
      console: false,
    }),
    Sentry.reactNativeTracingIntegration?.({ idleTimeoutMs: 1500 }),
  ].filter(Boolean),

  // denyUrls: [...],
  // ignoreErrors: [...],
  // beforeSend: (event) => event,
  // beforeSendTransaction: (tx) => tx,
  // tracesSampler: (ctx) => 0.1,
  // maxBreadcrumbs: 50,
});

// Initial config needs to be done after Sentry.init is called.
setSentryConfig({
  tracesSampleRate: baseTransactionSampleRate,
  tracesSampleRateByName: {
    // Low importance transactions (generic example).
    'GET /example/low-importance-endpoint': baseTransactionSampleRate / 2,
  },
  sessionRateLimit: {
    maxDuplicatedEvents: process.env.E2E_MODE === 'true' || __DEV__ ? 1 : 10,
    totalMaxEvents: process.env.E2E_MODE === 'true' || __DEV__ ? 10 : 5_000,
  },
  identification: {
    domain: 'example.com',
  },
});

Steps to Reproduce

Making request in the app, found
node_modules/@sentry/core/build/esm/utils/tracing.js

/**
 * Create sentry-trace header from span context values.
 */
function generateSentryTraceHeader(
  traceId = generateTraceId(),
  spanId = generateSpanId(),
  sampled,
) {
  let sampledString = '';
  if (sampled !== undefined) {
    sampledString = sampled ? '-1' : '-0';
  }
  return `${traceId}-${spanId}${sampledString}`;
}

function generateTraceparentHeader(
  traceId = generateTraceId(),
  spanId = generateSpanId(),
  sampled,
) {
  return `00-${traceId}-${spanId}-${sampled ? '01' : '00'}`;
}

the generateTraceId and generateSpanId because are there as default the are being executed always, no matter if you call the function passing values.

Expected Result

calling the function generateSentryTraceHeader and generateTraceparentHeader, shouldn't generate extra calls to getRandomValues when generating a uuid4

Actual Result

calling the function generateSentryTraceHeader and generateTraceparentHeader, generate more than 90 calls to the getRandomValues to generate the uuid4

Additional Context

No response

Priority

_{React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it.}

[linear]

JS-1355

[nicohrubec]

Hey! The React Native SDK is not maintained in this repository. Please open this ticket on the Sentry React Native SDK repository.