appsync resolver cannot set both maxBatchSize and PipelineConfig

[hwangar]

Describe the bug

UPDATE_ROLLBACK_COMPLETE: Pipeline JS resolvers cannot have a maxBatchSize when using maxBatchSize with a pipeline, sth totally ok with aws console

Expected Behavior

Allow maxBatchSize with a pipeline

Current Behavior

Currently I have to patch after deployment

Reproduction Steps

Sample legit use case:

resolver code: BatchInvoke to a lambda

function request(context) {
  return {
    operation: "BatchInvoke",
    payload: {
      context,
      selectionSetList: context.info.selectionSetList
    }
  };
}
function response(ctx) {
  const { error, result } = ctx;
  if (result.error) {
    const { message, type, data } = result;
    util.error(message, type, data);
  }
  if (error)
    util.appendError(error.message, error.type);
  return result;
}
export {
  request,
  response
};

at pipeline I have the batch processor lambda as per doc

cdk code:

private createJsResolver(appSync: appsync.GraphqlApi, dataSource: appsync.BaseDataSource, typeName: string, fieldName: string, resolverNames: string[]) {
    const fns = resolverNames.map(
      resolver =>
        new appsync.AppsyncFunction(this, `fn-${typeName}-${fieldName}-${resolver}`, {
          name: `${typeName}_${fieldName}_${resolver}`,
          api: appSync,
          dataSource,
          code: this.bundleAppSyncResolver(path.join(__dirname, `../../src/main/infrastructure/resolvers/${resolver}.ts`)),
          runtime: appsync.FunctionRuntime.JS_1_0_0,
        }),
    );
    appSync.createResolver(`res-${typeName}-${fieldName}`, {
      typeName,
      fieldName,
      runtime: appsync.FunctionRuntime.JS_1_0_0,
      code: this.defaultPipelineCode,
      pipelineConfig: fns,
      // TODO check later "Pipeline resolvers cannot have a maxBatchSize."
      // maxBatchSize: resolverNames.includes('_lambdaBatchInvoke') ? 200 : undefined,
    });
  }

when deploying, error shows up

Possible Solution

No response

Additional Information/Context

No response

CDK CLI Version

2.102.0 (build 2abc59a)

Framework Version

No response

Node.js Version

v18.13.0

OS

Macos 12.6.8

Language

TypeScript

Language Version

Typescript 4.9.5

Other information

x-prod failed: Error: The stack named x-prod failed to deploy: UPDATE_ROLLBACK_COMPLETE: Pipeline resolvers cannot have a maxBatchSize.
at FullCloudFormationDeployment.monitorDeployment (/Users/hwangar/Projects/backend/node_modules/aws-cdk/lib/index.js:467:10232)
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
at async Object.deployStack2 [as deployStack] (/Users/hwangar/Projects/backend/node_modules/aws-cdk/lib/index.js:470:180228)
at async /Users/hwangar/Projects/backend/node_modules/aws-cdk/lib/index.js:470:163476

[peterwoodworth]

If this is happening during deployment, that means CloudFormation is throwing the error here. I can't find any docs that say this should be limited, but assuming we're generating the template as expected, this would be an issue with CloudFormation's implementation. @indrora @khushail will one of you be able to follow up on this internally?