| 1 | import * as route53 from "@distilled.cloud/aws/route-53"; |
| 2 | import * as Effect from "effect/Effect"; |
| 3 | |
| 4 | /** |
| 5 | * Find the most specific PUBLIC Route 53 hosted zone containing |
| 6 | * `domainName`, walking up its labels (`svc.api.example.com` → |
| 7 | * `api.example.com` → `example.com`). Wildcard labels (`*`) never name a |
| 8 | * zone, so they fall through to the parent naturally. Returns the bare |
| 9 | * zone id (no `/hostedzone/` prefix), or `undefined` when no public zone |
| 10 | * matches. |
| 11 | * |
| 12 | * Shared by every provider that infers a hosted zone from a hostname |
| 13 | * (Route 53 Record/Records, ACM Certificate validation, ECS Service DNS). |
| 14 | */ |
| 15 | export const findPublicHostedZoneId = Effect.fn("findPublicHostedZoneId")( |
| 16 | function* (domainName: string) { |
| 17 | const labels = domainName |
| 18 | .replace(/\.$/, "") |
| 19 | .split(".") |
| 20 | .filter((label) => label.length > 0); |
| 21 | for (let i = 0; i < labels.length - 1; i++) { |
| 22 | const candidate = `${labels.slice(i).join(".")}.`; |
| 23 | const listed = yield* route53.listHostedZonesByName({ |
| 24 | DNSName: candidate, |
| 25 | MaxItems: 1, |
| 26 | }); |
| 27 | const zone = listed.HostedZones?.[0]; |
| 28 | if ( |
| 29 | zone?.Id !== undefined && |
| 30 | zone.Name === candidate && |
| 31 | zone.Config?.PrivateZone !== true |
| 32 | ) { |
| 33 | return zone.Id.replace(/^\/hostedzone\//, ""); |
| 34 | } |
| 35 | } |
| 36 | return undefined; |
| 37 | }, |
| 38 | ); |
| 39 | |
| 40 | /** |
| 41 | * Resolve the hosted zone for `domainName`: the explicit id when given, |
| 42 | * otherwise the most specific public zone in the account (see |
| 43 | * {@link findPublicHostedZoneId}). Fails with an actionable error when |
| 44 | * neither yields a zone. |
| 45 | */ |
| 46 | export const resolveHostedZoneId = Effect.fn("resolveHostedZoneId")(function* ( |
| 47 | hostedZoneId: string | undefined, |
| 48 | domainName: string, |
| 49 | ) { |
| 50 | if (hostedZoneId !== undefined) { |
| 51 | return hostedZoneId; |
| 52 | } |
| 53 | const inferred = yield* findPublicHostedZoneId(domainName); |
| 54 | if (inferred === undefined) { |
| 55 | return yield* Effect.fail( |
| 56 | new Error( |
| 57 | `No public Route 53 hosted zone in this account contains "${domainName}" — ` + |
| 58 | `create the zone first or pass "hostedZoneId" explicitly.`, |
| 59 | ), |
| 60 | ); |
| 61 | } |
| 62 | return inferred; |
| 63 | }); |