sentry/static/app/views/starfish/utils/createUnnamedTransactionsDiscoverTarget.tsx

import {Location} from 'history';

import {t} from 'sentry/locale';
import {NewQuery, Organization} from 'sentry/types';
import EventView from 'sentry/utils/discover/eventView';

export const UNPARAMETERIZED_TRANSACTION = '<< unparameterized >>'; // Represents 'other' transactions with high cardinality names that were dropped on the metrics dataset.
const SHOW_UNPARAM_BANNER = 'showUnparameterizedBanner';

enum DiscoverQueryPageSource {
  PERFORMANCE = 'performance',
  DISCOVER = 'discover',
}

export function createUnnamedTransactionsDiscoverTarget(props: {
  location: Location;
  organization: Organization;
  source?: DiscoverQueryPageSource;
}) {
  const fields =
    props.source === DiscoverQueryPageSource.DISCOVER
      ? ['transaction', 'project', 'transaction.source', 'epm()']
      : ['transaction', 'project', 'transaction.source', 'epm()', 'p50()', 'p95()'];

  const query: NewQuery = {
    id: undefined,
    name:
      props.source === DiscoverQueryPageSource.DISCOVER
        ? t('Unparameterized Transactions')
        : t('Performance - Unparameterized Transactions'),
    query: 'event.type:transaction transaction.source:"url"',
    projects: [],
    fields,
    version: 2,
  };

  const discoverEventView = EventView.fromNewQueryWithLocation(
    query,
    props.location
  ).withSorts([{field: 'epm', kind: 'desc'}]);
  const target = discoverEventView.getResultsViewUrlTarget(props.organization.slug);
  target.query[SHOW_UNPARAM_BANNER] = 'true';
  return target;
}