Support both OpenSearch Service and OpenSearch Serverless

README.md

@@ -2,4 +2,4 @@
 
 This package provides an automatically configured [client for OpenSearch](https://opensearch.org/docs/latest/clients/javascript/index/) in an [Architect](https://arc.codes/) application.
 
-Pair this package with [@nasa-gcn/architect-plugins-search](https://github.com/nasa-gcn/architect-plugins-search), a [plugin](https://arc.codes/docs/en/guides/plugins/overview) that adds [Amazon OpenSearch Serverless](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless.html) to your application.
+Pair this package with [@nasa-gcn/architect-plugins-search](https://github.com/nasa-gcn/architect-plugins-search), a [plugin](https://arc.codes/docs/en/guides/plugins/overview) that adds [Amazon OpenSearch](https://aws.amazon.com/opensearch-service/) to your application.

index.ts

@@ -14,13 +14,14 @@ import memoizee from 'memoizee'
 export const search = memoizee(
   async () => {
     const discoveredServices = await services()
-    const node =
-      discoveredServices['nasa-gcn']?.['architect-plugin-search']?.node
+    const props = discoveredServices['nasa-gcn']?.['architect-plugin-search']
+    const node = props?.node
+    const service = props?.sig4service
     if (!node) throw new Error('unknown endpoint')
 
     const options = { node }
 
-    if (new URL(node).hostname !== 'localhost') {
+    if (service) {
       const region = process.env.AWS_REGION
       if (!region)
         throw new Error('environment variable AWS_REGION must be defined')
@@ -30,7 +31,7 @@ export const search = memoizee(
           region,
           // @ts-expect-error: service is missing from type definition;
           // fixed in https://github.com/opensearch-project/opensearch-js/pull/377
-          service: 'aoss',
+          service,
         })
       )
     }