def _generate_syncapp_vtl_resolver_req_mt()

in syndicate/core/generators/contents.py [0:0]

• 57 lines of code
• 1 McCabe index (conditional complexity)

def _generate_syncapp_vtl_resolver_req_mt(data_source_type):
    match data_source_type:
        case 'NONE':
            content = \
                '''#**Resolvers with None data sources can locally publish events that fire
                subscriptions or otherwise transform data without hitting a backend data source.
                The value of 'payload' is forwarded to $ctx.result in the response mapping template.
                *#
                {
                    "version": "2018-05-29",
                    "payload": {
                        "hello": "local",
                    }
                }
                            '''
        case 'AWS_LAMBDA':
            content = \
                '''#**The value of 'payload' after the template has been evaluated
                will be passed as the event to AWS Lambda.
                *#
                {
                  "version" : "2018-05-29",
                  "operation": "Invoke",
                  "payload": $util.toJson($context.args)
                }
                                            '''
        case 'AMAZON_DYNAMODB':
            content = \
                '''## Below example shows how to look up an item with a Primary Key of "id" from GraphQL arguments
                ## The helper $util.dynamodb.toDynamoDBJson automatically converts to a DynamoDB formatted request
                ## There is a "context" object with arguments, identity, headers, and parent field information you can access.
                ## It also has a shorthand notation available:
                ##  - $context or $ctx is the root object
                ##  - $ctx.arguments or $ctx.args contains arguments
                ##  - $ctx.identity has caller information, such as $ctx.identity.username
                ##  - $ctx.request.headers contains headers, such as $context.request.headers.xyz
                ##  - $ctx.source is a map of the parent field, for instance $ctx.source.xyz
                ## Read more: https://docs.aws.amazon.com/appsync/latest/devguide/resolver-mapping-template-reference.html
                
                {
                    "version": "2018-05-29",
                    "operation": "GetItem",
                    "key": {
                        "id": $util.dynamodb.toDynamoDBJson($ctx.args.id),
                    }
                }
                '''
        case 'PIPELINE':
            content = \
                '''## By default in a before template, all you need is a valid JSON payload.
                ## You can also stash data to be made available to the functions in the pipeline.
                ## Examples: 
                ## - $ctx.stash.put("email", $ctx.args.email)
                ## - $ctx.stash.put("badgeNumber", $ctx.args.input.badgeNumber)
                ## - $ctx.stash.put("username", $ctx.identity.username)
                
                {}
                '''
    return content