(@aws-cdk/aws-appsync): Internal error while saving the schema

When creating a GraphQL API, cloudformation keeps failing with an “Internal error while saving the schema” error.

Reproduction Steps

Typescript

const websiteGraphqlApi = new GraphqlApi(this, 'api', {
	name: `My API`,
	logConfig: {
	  fieldLogLevel: FieldLogLevel.ALL,
	},
	authorizationConfig: {
		defaultAuthorization: {
			authorizationType: AuthorizationType.USER_POOL,
			userPoolConfig: {
				userPool: props.userPool,
				defaultAction: UserPoolDefaultAction.ALLOW
			},
		},
		additionalAuthorizationModes: [{
			authorizationType: AuthorizationType.API_KEY,
		}],
	},
	schema: Schema.fromAsset(join(__dirname, 'schema.graphql'))
});

const productsTable = new Table(this, 'products-table', {
	partitionKey: {
	  name: 'id',
	  type: AttributeType.STRING,
	},
});

const productsDataSource = websiteGraphqlApi.addDynamoDbDataSource('products-datasource', productsTable);

productsDataSource.createResolver({
	typeName: 'Query',
	fieldName: 'getProducts',
	requestMappingTemplate: MappingTemplate.dynamoDbScanTable(),
	responseMappingTemplate: MappingTemplate.dynamoDbResultList(),
});

productsDataSource.createResolver({
	typeName: 'Mutation',
	fieldName: 'addProduct',
	requestMappingTemplate: MappingTemplate.dynamoDbPutItem(
		PrimaryKey.partition('id').auto(),
		Values.projecting('Product')
	),
	responseMappingTemplate: MappingTemplate.dynamoDbResultItem(),
});

schema.graphql

type Product {
    id: ID!
    title: String!
    price: Int!
    quantity: Int!
    category: Category!
}

type Category {
    id: ID!
    title: String!
    Products: [Product!]!
}

type Query {
    getProducts: [Product!]!
}

input CategoryInput {
    id: String!
}

input AddProductInput {
    title: String!
    price: Int!
    quantity: Int!
    category: CategoryInput!
}

type Mutation {
    addProduct(input: AddProductInput!): Product
}

What did you expect to happen?

Appsync to be created with the schema.

What actually happened?

CloudFormation fails with the error: Schema Creation Status is FAILED with details: Internal Failure while saving the schema.

Environment

• CDK CLI Version : 1.88.0 (build f65009b)
• Framework Version:
• Node.js Version: node12.18
• OS: Linux
• Language (Version): TypeScript (3.8.3)

Other

I’ve tried using the example on the AWS-CDK documentation here for both the schema and typescript however I still get the same issue.

This is 🐛 Bug Report

[MrArnoldPalmer]

thanks @owenashurst for the update. Closing this for now. It seems AppSync can throw quite a few “internal errors” during deploy related to the schema. It would be nice if we could start to catch these earlier and trow better messages. Closing for now but @PeterEckIII open another issue with your repro if you haven’t solved it and we will take another look.

[github-actions[bot]]

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