sentry/static/app/views/performance/newTraceDetails/traceWarnings.tsx

import {useEffect} from 'react';
import * as Sentry from '@sentry/react';

import Alert from 'sentry/components/alert';
import ExternalLink from 'sentry/components/links/externalLink';
import {t} from 'sentry/locale';
import useOrganization from 'sentry/utils/useOrganization';
import {traceAnalytics} from 'sentry/views/performance/newTraceDetails/traceAnalytics';

import {TraceType} from './traceType';

type TraceWarningsProps = {
  type: TraceType;
};

export function TraceWarnings({type}: TraceWarningsProps) {
  const organization = useOrganization();

  useEffect(() => {
    traceAnalytics.trackTraceWarningType(type, organization);
  }, [type, organization]);

  switch (type) {
    case TraceType.NO_ROOT:
      return (
        <Alert type="info" showIcon>
          <ExternalLink href="https://docs.sentry.io/concepts/key-terms/tracing/trace-view/#orphan-traces-and-broken-subtraces">
            {t(
              'A root transaction is missing. Transactions linked by a dashed line have been orphaned and cannot be directly linked to the root.'
            )}
          </ExternalLink>
        </Alert>
      );
    case TraceType.BROKEN_SUBTRACES:
      return (
        <Alert type="info" showIcon>
          <ExternalLink href="https://docs.sentry.io/concepts/key-terms/tracing/trace-view/#orphan-traces-and-broken-subtraces">
            {t(
              'This trace has broken subtraces. Transactions linked by a dashed line have been orphaned and cannot be directly linked to the root.'
            )}
          </ExternalLink>
        </Alert>
      );
    // Multiple roots are an edge case in browser SDKs and should be handled by the SDK.
    // The user should not see a warning as they cannot do anything about it.
    case TraceType.BROWSER_MULTIPLE_ROOTS:
      return null;
    case TraceType.MULTIPLE_ROOTS:
      return (
        <Alert type="info" showIcon>
          <ExternalLink href="https://docs.sentry.io/concepts/key-terms/tracing/trace-view/#multiple-roots">
            {t('Multiple root transactions have been found with this trace ID.')}
          </ExternalLink>
        </Alert>
      );
    case TraceType.ONLY_ERRORS:
    case TraceType.ONE_ROOT:
    case TraceType.EMPTY_TRACE:
      return null;
    default:
      Sentry.captureMessage(`Unhandled trace type - ${type}`);
      return null;
  }
}