grafana/public/app/plugins/panel/alertlist/util.ts

import { isEmpty } from 'lodash';

import { Labels, PanelProps } from '@grafana/data';
import { labelsMatchMatchers, parseMatchers } from 'app/features/alerting/unified/utils/alertmanager';
import { replaceVariables } from 'app/plugins/datasource/prometheus/querybuilder/shared/parsingUtils';
import { Alert, hasAlertState } from 'app/types/unified-alerting';
import { GrafanaAlertState, PromAlertingRuleState } from 'app/types/unified-alerting-dto';

import { UnifiedAlertListOptions } from './types';

function hasLabelFilter(alertInstanceLabelFilter: string, labels: Labels) {
  const replacedLabelFilter = replaceVariables(alertInstanceLabelFilter);
  const matchers = parseMatchers(replacedLabelFilter);
  return labelsMatchMatchers(labels, matchers);
}

export function filterAlerts(options: PanelProps<UnifiedAlertListOptions>['options'], alerts: Alert[]): Alert[] {
  const { stateFilter, alertInstanceLabelFilter } = options;

  if (isEmpty(stateFilter)) {
    return alerts;
  }

  return alerts.filter((alert) => {
    return (
      ((stateFilter.firing &&
        (hasAlertState(alert, GrafanaAlertState.Alerting) || hasAlertState(alert, PromAlertingRuleState.Firing))) ||
        (stateFilter.pending &&
          (hasAlertState(alert, GrafanaAlertState.Pending) || hasAlertState(alert, PromAlertingRuleState.Pending))) ||
        (stateFilter.noData && hasAlertState(alert, GrafanaAlertState.NoData)) ||
        (stateFilter.normal && hasAlertState(alert, GrafanaAlertState.Normal)) ||
        (stateFilter.error && hasAlertState(alert, GrafanaAlertState.Error)) ||
        (stateFilter.inactive && hasAlertState(alert, PromAlertingRuleState.Inactive))) &&
      ((alertInstanceLabelFilter && hasLabelFilter(options.alertInstanceLabelFilter, alert.labels)) ||
        !alertInstanceLabelFilter)
    );
  });
}

export function isPrivateLabel(label: string) {
  return !(label.startsWith('__') && label.endsWith('__'));
}