chore: wip to get hostname from variants

Author: trivikr

packages/config-resolver/src/regionInfo/getHostnameFromVariants.ts

@@ -0,0 +1,13 @@
+import { EndpointVariant } from "./EndpointVariant";
+
+export interface GetHostnameFromVariantsOptions {
+  isFipsEndpoint: boolean;
+  isDualstackEndpoint: boolean;
+}
+
+export const getHostnameFromVariants = (
+  variants: EndpointVariant[],
+  { isFipsEndpoint, isDualstackEndpoint }: GetHostnameFromVariantsOptions
+) => {
+  return variants.find(({ tags }) => isFipsEndpoint).hostname;
+};

packages/config-resolver/src/regionInfo/getRegionInfo.ts

@@ -28,9 +28,11 @@ export const getRegionInfo = (
   const resolvedRegion = region in regionHash ? region : partitionHash[partition]?.endpoint ?? region;
 
   const hostname = getResolvedHostname(resolvedRegion, {
+    isFipsEndpoint,
+    isDualstackEndpoint,
     signingService,
-    regionHostname: regionHash[resolvedRegion]?.hostname,
-    partitionHostname: partitionHash[partition]?.hostname,
+    regionVariants: regionHash[resolvedRegion]?.variants,
+    partitionVariants: partitionHash[partition]?.variants,
   });
   const signingRegion = getResolvedSigningRegion(region, {
     hostname,

packages/config-resolver/src/regionInfo/getResolvedHostname.ts

@@ -1,12 +1,15 @@
+import { EndpointVariant } from "./EndpointVariant";
 import { getHostnameTemplate } from "./getHostnameTemplate";
 
 export interface GetResolvedHostnameOptions {
+  isFipsEndpoint: boolean;
+  isDualstackEndpoint: boolean;
   signingService: string;
-  regionHostname?: string;
-  partitionHostname?: string;
+  regionVariants: EndpointVariant[];
+  partitionVariants: EndpointVariant[];
 }
 
 export const getResolvedHostname = (
   resolvedRegion: string,
-  { signingService, regionHostname, partitionHostname }: GetResolvedHostnameOptions
-) => regionHostname ?? getHostnameTemplate(signingService, { partitionHostname }).replace("{region}", resolvedRegion);
+  { signingService, regionVariants, partitionVariants }: GetResolvedHostnameOptions
+) => regionHostname ?? getHostnameTemplate(signingService, { partitionVariants }).replace("{region}", resolvedRegion);