@grafana/alerting/dist/esm/grafana/notificationPolicies/utils.mjs

Grafana Alerting Library – Build vertical integrations on top of the industry-leading alerting solution

import { pick, reduce, isArray, uniqueId, groupBy } from 'lodash';
import { matchLabels } from '../matchers/utils.mjs';

"use strict";
const INHERITABLE_KEYS = ["receiver", "group_by", "group_wait", "group_interval", "repeat_interval"];
function findMatchingRoutes(route, labels, matchingJourney = []) {
  var _a;
  let childMatches = [];
  const matchResult = matchLabels((_a = route.matchers) != null ? _a : [], labels);
  const currentMatchInfo = {
    route,
    matchDetails: matchResult.details,
    matched: matchResult.matches
  };
  const currentMatchingJourney = [...matchingJourney, currentMatchInfo];
  if (!matchResult.matches) {
    return [];
  }
  if (route.routes) {
    for (const child of route.routes) {
      const matchingChildren = findMatchingRoutes(child, labels, currentMatchingJourney);
      childMatches = childMatches.concat(matchingChildren);
      if (matchingChildren.length && !child.continue) {
        break;
      }
    }
  }
  if (childMatches.length === 0) {
    childMatches.push({
      route,
      labels,
      matchingJourney: currentMatchingJourney
    });
  }
  return childMatches;
}
function computeInheritedTree(parent) {
  var _a;
  return {
    ...parent,
    routes: (_a = parent.routes) == null ? void 0 : _a.map((child) => {
      const inheritedProperties = getInheritedProperties(parent, child);
      return computeInheritedTree({
        ...child,
        ...inheritedProperties
      });
    })
  };
}
function getInheritedProperties(parentRoute, childRoute, propertiesParentInherited) {
  const propsFromParent = pick(parentRoute, INHERITABLE_KEYS);
  const inheritableProperties = {
    ...propsFromParent,
    ...propertiesParentInherited
  };
  const inherited = reduce(
    inheritableProperties,
    // @ts-ignore TSGO / TS7 see above comment about the reduce function signature.
    (inheritedProperties, parentValue, property) => {
      var _a;
      const parentHasValue = parentValue != null;
      const inheritableValues = [void 0, "", null];
      const childIsInheriting = inheritableValues.some((value) => childRoute[property] === value);
      const inheritFromValue = childIsInheriting && parentHasValue;
      const inheritEmptyGroupByFromParent = property === "group_by" && parentHasValue && isArray(childRoute[property]) && ((_a = childRoute[property]) == null ? void 0 : _a.length) === 0;
      const inheritFromParent = inheritFromValue || inheritEmptyGroupByFromParent;
      if (inheritFromParent) {
        inheritedProperties[property] = parentValue;
      }
      return inheritedProperties;
    },
    {}
  );
  return inherited;
}
function addUniqueIdentifier(route) {
  var _a, _b;
  return {
    id: uniqueId("route-"),
    ...route,
    routes: (_b = (_a = route.routes) == null ? void 0 : _a.map(addUniqueIdentifier)) != null ? _b : []
  };
}
function matchInstancesToRoute(rootRoute, instances) {
  const matchedPolicies = /* @__PURE__ */ new Map();
  const expandedTree = addUniqueIdentifier(computeInheritedTree(rootRoute));
  const matchesArray = instances.flatMap((labels) => findMatchingRoutes(expandedTree, labels));
  const groupedByRoute = groupBy(matchesArray, (match) => match.route.id);
  Object.entries(groupedByRoute).forEach(([_key, match]) => {
    matchedPolicies.set(match[0].route, match);
  });
  return {
    expandedTree,
    matchedPolicies
  };
}
function convertRoutingTreeToRoute(routingTree) {
  const convertRoutingTreeRoutes = (routes) => {
    return routes.map(
      (route) => ({
        ...route,
        routes: route.routes ? convertRoutingTreeRoutes(route.routes) : []
      })
    );
  };
  const rootRoute = {
    ...routingTree.spec.defaults,
    continue: false,
    active_time_intervals: [],
    mute_time_intervals: [],
    matchers: [],
    // Root route has no matchers (catch-all)
    routes: convertRoutingTreeRoutes(routingTree.spec.routes)
  };
  return rootRoute;
}

export { INHERITABLE_KEYS, addUniqueIdentifier, computeInheritedTree, convertRoutingTreeToRoute, findMatchingRoutes, getInheritedProperties, matchInstancesToRoute };
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