Accessing the GraphQL query from inside an AWS AppSync resolver - terraform-provider-aws

Question

I would like to be able to access the GraphQL query inside of my AWS AppSync resolvers, but have not been able to figure out how to go about achieving this.
I use Terraform to create the resolver, like so:
resource "aws_appsync_resolver" "graphql_event_resolver" {
api_id = aws_appsync_graphql_api.appsync.id
type = "Query"
field = "event"
data_source = aws_appsync_datasource.graphql_datasource.name
request_template = <<EOF
{
"version" : "2017-02-28",
"operation": "Invoke",
"payload": {
"resolve": "event",
"arguments": $util.toJson($context.arguments)
}
}
EOF
response_template = var.response_template
}
Then I have a JavaScript resolver like the one below:
exports.handler = (event, context, callback) => {
console.log('VTL details: ', event);
callback(null, event);
};
I suspect the solution is to pass the query in the request template payload in the Terraform code where I create the resolver, but I have been unable to find any information on how to do this, so any help would be much appreciated.

Answer 1

Figured out, thanks to JWK's answer to this question, how to do it:
resource "aws_appsync_resolver" "graphql_event_resolver" {
api_id = aws_appsync_graphql_api.appsync.id
type = "Query"
field = "event"
data_source = aws_appsync_datasource.graphql_datasource.name
request_template = <<EOF
{
"version" : "2017-02-28",
"operation": "Invoke",
"payload": {
"resolve": "event",
"arguments": $util.toJson($context.arguments),
"query": $utils.toJson($context.info.selectionSetList)
}
}
EOF
response_template = var.response_template
}