JSPM – @aws-cdk/aws-appsync@1.22.0

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@aws-cdk/aws-appsync

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Readme

AWS AppSync Construct Library

This is a developer preview (public beta) module. Releases might lack important features and might have future breaking changes.

This API is still under active development and subject to non-backward compatible changes or removal in any future version. Use of the API is not recommended in production environments. Experimental APIs are not subject to the Semantic Versioning model.

This module is part of the AWS Cloud Development Kit project.

Usage Example

Given the following GraphQL schema file schema.graphql:

type Customer {
    id: String!
    name: String!
}

input SaveCustomerInput {
    name: String!
}

type Query {
    getCustomers: [Customer]
    getCustomer(id: String): Customer
}

type Mutation {
    addCustomer(customer: SaveCustomerInput!): Customer
    saveCustomer(id: String!, customer: SaveCustomerInput!): Customer
    removeCustomer(id: String!): Customer
}

the following CDK app snippet will create a complete CRUD AppSync API:

export class ApiStack extends Stack {
  constructor(scope: Construct, id: string) {
    super(scope, id);

    const userPool = new UserPool(this, 'UserPool', {
      signInType: SignInType.USERNAME,
    });

    const api = new GraphQLApi(this, 'Api', {
      name: `demoapi`,
      logConfig: {
        fieldLogLevel: FieldLogLevel.ALL,
      },
      userPoolConfig: {
        userPool,
        defaultAction: UserPoolDefaultAction.ALLOW,
      },
      schemaDefinitionFile: './schema.graphql',
    });

    const customerTable = new Table(this, 'CustomerTable', {
      billingMode: BillingMode.PAY_PER_REQUEST,
      partitionKey: {
        name: 'id',
        type: AttributeType.STRING,
      },
    });
    const customerDS = api.addDynamoDbDataSource('Customer', 'The customer data source', customerTable);
    customerDS.createResolver({
      typeName: 'Query',
      fieldName: 'getCustomers',
      requestMappingTemplate: MappingTemplate.dynamoDbScanTable(),
      responseMappingTemplate: MappingTemplate.dynamoDbResultList(),
    });
    customerDS.createResolver({
      typeName: 'Query',
      fieldName: 'getCustomer',
      requestMappingTemplate: MappingTemplate.dynamoDbGetItem('id', 'id'),
      responseMappingTemplate: MappingTemplate.dynamoDbResultItem(),
    });
    customerDS.createResolver({
      typeName: 'Mutation',
      fieldName: 'addCustomer',
      requestMappingTemplate: MappingTemplate.dynamoDbPutItem('id', 'customer'),
      responseMappingTemplate: MappingTemplate.dynamoDbResultItem(),
    });
    customerDS.createResolver({
      typeName: 'Mutation',
      fieldName: 'saveCustomer',
      requestMappingTemplate: MappingTemplate.dynamoDbPutItem('id', 'customer', 'id'),
      responseMappingTemplate: MappingTemplate.dynamoDbResultItem(),
    });
    customerDS.createResolver({
      typeName: 'Mutation',
      fieldName: 'removeCustomer',
      requestMappingTemplate: MappingTemplate.dynamoDbDeleteItem('id', 'id'),
      responseMappingTemplate: MappingTemplate.dynamoDbResultItem(),
    });
  }
}