I’m having problems creating an AWS::AppSync::Resolver that is a PIPELINE kind, written in JavaScript. I think that the problem lies in what i write for Code:
since in AWS docs it is not explained to details it only says that it is of type String. So i went with the assumption that it is the same as if i were to write code using VTL so i put the JS code directly into the .yml file for Code:
parameter.
UpsertMappingDataResolver:
Type: AWS::AppSync::Resolver
Properties:
ApiId: !GetAtt GraphQLApi.ApiId
TypeName: "Mutation"
FieldName: "upsertDataWithMapping"
Kind: PIPELINE
Code: "export function request(ctx) {
return {
foo: 'bar'
};
}
export function response(ctx) {
if(ctx.prev.result) return 1;
return 0;
}"
Runtime:
Name: APPSYNC_JS
RuntimeVersion: "1.0.0"
PipelineConfig:
Functions:
- !GetAtt UpsertItem.FunctionId
- !GetAtt UpsertIntegrationMappingItem.FunctionId
DependsOn:
- Schema
So i tried this, but the CloudFormation build failed with the following this error:
The code contains one or more errors. (Service: AWSAppSync; Status Code: 400; Error Code: BadRequestException; Request ID: 0245d64d-…; Proxy: null)
2
Answers
I managed to solve it in the meantime, it looks like the APPSYNC_JS runtime does not support arrow functions, and in my original code I had a forEach(()=>{}) method which was why my code was crashing.
Your code block is missing a YAML multi-line code indicator (e.g.
|
):