Updating resolver on a field

[harleyguru]

Here is the details of the problem:

• attach resolver on a field on AppSync console
• delete or update resolver for that field in mappingTemplates property of serverless.yml
• no effects on AppSync when I deploy

[Gbahaa]

Agree,

CloudFormation will not update the stack unless there is a change in properties of the resources already created in the stack.

I have tried to delete a resolver, then deploy again by using different properties of the resolver (in fact just added a time stamp to the response mapping template). ex: (index.js line 194)

ResponseMappingTemplate: fs.readFileSync(respTemplPath, 'utf8'), =(becomes)=>

ResponseMappingTemplate: `${(new Date()).getTime().toString()}` + fs.readFileSync(respTemplPath, 'utf8'), but an error raised [No resolver found.] !

The only working solution I found is to use a new logical Id for the graphqlAPI on every deployment. For example, we define a logical Id as const graphQlApiLogicalId = `GraphQlApi${(new Date()).getTime().toString()}`;

and use it in line 93 of index.js GraphQlApi: {
=(becomes)=> [graphQlApiLogicalId]: { and in all other places where GraphQlApi is mentioned.

The PROBLEM is that we will get a new graphql API id and API key on every deployment. This may not be a problem if you have a custom domain.

I am interested to find a solution also so I will keep looking for a better one. Any feedback is highly appreciated.

[harleyguru]

I had to detach existing resolver manually in the console and deploy again. It worked at the moment.