I have the ArcGIS Enterpise (10.9.1) subscription and I would like to expose high volumes of data coming in real-time stored in Elasticsearch through the map/feature services in order to visualize it on a web app. The GeoEvent server is able to handle this huge data ingestion in real-time which can then store it in the Spatiotemporal Big Data Store, as seen in the screenshot attached taken from Esri's DevSummit Event (https://www.youtube.com/watch?v=iW7_w9Evr6c&ab_channel=EsriEvents).
However, I could not find any tutorials on how we can connect to elasticsearch in the GeoEvent server input connectors. I would appreciate any guidance on how i can go about setting up a direct connection to elasticsearch.