sentry/static/app/views/settings/projectMetrics/cardinalityLimit.tsx

import styled from '@emotion/styled';

import Access from 'sentry/components/acl/access';
import NumberField from 'sentry/components/forms/fields/numberField';
import Form from 'sentry/components/forms/form';
import Panel from 'sentry/components/panels/panel';
import PanelBody from 'sentry/components/panels/panelBody';
import PanelHeader from 'sentry/components/panels/panelHeader';
import {t} from 'sentry/locale';
import type {Project} from 'sentry/types/project';
import useOrganization from 'sentry/utils/useOrganization';

type Props = {
  project: Project;
};

const DEFAULT_LIMIT = '5000';

function transformData(data) {
  const limit = data.relayCustomMetricCardinalityLimit;
  return {
    relayCustomMetricCardinalityLimit:
      limit === '' || limit === DEFAULT_LIMIT ? null : limit,
  };
}

export function CardinalityLimit({project}: Props) {
  const organization = useOrganization();
  const endpoint = `/projects/${organization.slug}/${project.slug}/`;

  return (
    <Form
      apiEndpoint={endpoint}
      apiMethod="PUT"
      saveOnBlur
      initialData={{
        relayCustomMetricCardinalityLimit:
          project.relayCustomMetricCardinalityLimit ?? DEFAULT_LIMIT,
      }}
    >
      <Panel>
        <PanelHeader>{t('Limits')}</PanelHeader>
        <PanelBody>
          <Access access={['project:write']} project={project}>
            {({hasAccess}) => (
              <StyledNumberField
                disabledReason={
                  !hasAccess
                    ? t('You do not have permission to edit the cardinality limit')
                    : undefined
                }
                disabled={!hasAccess}
                name="relayCustomMetricCardinalityLimit"
                label={t('Cardinality Limit')}
                help={t(
                  'The cardinality limit defines the maximum number of unique tag combinations allowed for a metric (measured per hour). If the cardinality limit is exceeded, the metric will be blocked.'
                )}
                saveOnBlur
                placeholder={t('Enter a value')}
                flexibleControlStateSize
                multiple
                getData={transformData}
              />
            )}
          </Access>
        </PanelBody>
      </Panel>
    </Form>
  );
}

const StyledNumberField = styled(NumberField)`
  ${p => p.disabled && `cursor: not-allowed`}
`;