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grafana/public/app/features/alerting/unified/utils/routeTree.ts

117 lines
3.1 KiB

/**
* Various helper functions to modify (immutably) the route tree, aka "notification policies"
*/
import { omit } from 'lodash';
import { Route, RouteWithID } from 'app/plugins/datasource/alertmanager/types';
import { FormAmRoute } from '../types/amroutes';
import { formAmRouteToAmRoute } from './amroutes';
// add a form submission to the route tree
export const mergePartialAmRouteWithRouteTree = (
alertManagerSourceName: string,
partialFormRoute: Partial<FormAmRoute>,
routeTree: RouteWithID
): Route => {
const existing = findExistingRoute(partialFormRoute.id ?? '', routeTree);
if (!existing) {
throw new Error(`No such route with ID '${partialFormRoute.id}'`);
}
function findAndReplace(currentRoute: RouteWithID): Route {
let updatedRoute: Route = currentRoute;
if (currentRoute.id === partialFormRoute.id) {
const newRoute = formAmRouteToAmRoute(alertManagerSourceName, partialFormRoute, routeTree);
updatedRoute = omit(
{
...currentRoute,
...newRoute,
},
'id'
);
}
return omit(
{
...updatedRoute,
routes: currentRoute.routes?.map(findAndReplace),
},
'id'
);
}
return findAndReplace(routeTree);
};
// remove a route from the policy tree, returns a new tree
// make sure to omit the "id" because Prometheus / Loki / Mimir will reject the payload
export const omitRouteFromRouteTree = (findRoute: RouteWithID, routeTree: RouteWithID): Route => {
if (findRoute.id === routeTree.id) {
throw new Error('You cant remove the root policy');
}
function findAndOmit(currentRoute: RouteWithID): Route {
return omit(
{
...currentRoute,
routes: currentRoute.routes?.reduce((acc: Route[] = [], route) => {
if (route.id === findRoute.id) {
return acc;
}
acc.push(findAndOmit(route));
return acc;
}, []),
},
'id'
);
}
return findAndOmit(routeTree);
};
// add a new route to a parent route
export const addRouteToParentRoute = (
alertManagerSourceName: string,
partialFormRoute: Partial<FormAmRoute>,
parentRoute: RouteWithID,
routeTree: RouteWithID
): Route => {
const newRoute = formAmRouteToAmRoute(alertManagerSourceName, partialFormRoute, routeTree);
function findAndAdd(currentRoute: RouteWithID): RouteWithID {
if (currentRoute.id === parentRoute.id) {
return {
...currentRoute,
// TODO fix this typescript exception, it's... complicated
// @ts-ignore
routes: currentRoute.routes?.concat(newRoute),
};
}
return {
...currentRoute,
routes: currentRoute.routes?.map(findAndAdd),
};
}
function findAndOmitId(currentRoute: RouteWithID): Route {
return omit(
{
...currentRoute,
routes: currentRoute.routes?.map(findAndOmitId),
},
'id'
);
}
return findAndOmitId(findAndAdd(routeTree));
};
export function findExistingRoute(id: string, routeTree: RouteWithID): RouteWithID | undefined {
return routeTree.id === id ? routeTree : routeTree.routes?.find((route) => findExistingRoute(id, route));
}