lambda code connecting opensearch via appysync resolver

we are currently working on a critical project that involves integrating our OpenSearch cluster with appsync resolver to enable seamless data retrieval and processing from our grapql API.

Currently we have to leverage the lambda functions to handle the data resolution process between appsync and OpenSearch efficiently

Requirements
Lambda function:
we require a lambda function that can effectively connect to our OpenSearch cluster and execute queries based on the GraphQL requests coming through private appsyn resolver
appsync are created in private mode, and OpenSearch are created inside VPC

Appsync Resolver Configuration: we need assistance in configuring the appsync resolver to trigger the lambda function upon grapql queries that require data retrieval from OpenSearch

No repository files, tests, or entry points are named. Start by clarifying the private AppSync, VPC OpenSearch, Lambda, and GraphQL resolver requirements, then identify the applicable AWS configuration boundaries. Done would be a defined and working resolver-to-Lambda path that retrieves data from the VPC OpenSearch cluster.

Written by the indexing model from the issue text.