GRANDstack with AWS Appsync/Cognito/Cloudformation and EC2 instance of Neo4j

(Nickhall122) #1

I'm currently working on a side project that is PERFECT for a graph database/GraphQL and I'm trying to use Neo4j. I have my ec2 instance of a Neo4j database up and running. I'm trying to leverage all things Amazon, but don't want to use Neptune or Dynamo. That means I am trying to use resolvers and lambda functions as my data source for Appsync to get the job done. I'm definitely a newbie and can already tell Amazon makes things infinitely harder when you aren't using their products. Wondering if anyone has recommendations or tutorials on how I would go about this. THANKS SO MUCH!


(William Lyon) #2

Hey Nick -

My Appsync experience is pretty minimal, but my understanding is that you should be able to define lambdas to use as resolver functions for data sources other than Dynamo. So you should be able to use the neo4j driver in these lambdas to connect to / query Neo4j. With this approach you'll need to write Cypher in each resolver.

In theory, you should be able to leverage the neo4j-graphql.js integration in those resolvers, generating the Cypher necessary to resolve an arbitrary GraphQL request - by calling the neo4jgraphql function in the lambda / resolver, passing it the resolveInfo object that is passed to each resolver. However, I haven't actually tried that so I'm not completely sure it works.

Trying a Neo4j - Appsync demo has been on my list for a while so if I have time I'll give it a try and share the results with you.