add constants for ml backend api

Signed-off-by: tygao <[email protected]>

server/routes/chat_routes.ts

@@ -345,13 +345,16 @@ export function registerChatRoutes(router: IRouter, routeOptions: RoutesOptions)
       const { interactionId } = request.params;
 
       try {
-        const getResponse = await storageService.updateInteraction(interactionId, {
+        const updateResponse = await storageService.updateInteraction(interactionId, {
           feedback: request.body,
         });
-        return response.ok({ body: getResponse });
+        return response.ok({ body: { ...updateResponse, success: true } });
       } catch (error) {
         context.assistant_plugin.logger.error(error);
-        return response.custom({ statusCode: error.statusCode || 500, body: error.message });
+        return response.custom({
+          statusCode: error.statusCode || 500,
+          body: error.message,
+        });
       }
     }
   );

server/services/constants.ts

@@ -0,0 +1,9 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+const ML_API_PREFIX = '/_plugins/_ml';
+const MEMORY_API_PREFIX = `${ML_API_PREFIX}/memory`;
+export const CONVERSATION_API_PREFIX = `${MEMORY_API_PREFIX}/conversation`;
+export const INTERACTION_API_PREFIX = `${MEMORY_API_PREFIX}/interaction`;

server/services/storage/agent_framework_storage_service.ts

@@ -224,7 +224,7 @@ export class AgentFrameworkStorageService implements StorageService {
     try {
       const response = await this.client.transport.request({
         method: 'PUT',
-        path: `/_plugins/_ml/memory/interaction/${interactionId}/_update`,
+        path: `${ML_COMMONS_BASE_API}/memory/interaction/${interactionId}/_update`,
         body: {
           additional_info: additionalInfo,
         },