Serverless - Introduction to AWS AppSync > Tutorial: DynamoDB Resolvers > Preparation

Preparation

Create a table in DynamoDB with the following command:

aws cloudformation create-stack \
    --stack-name AWSAppSyncTutorialForAmazonDynamoDB \
    --template-url https://s3.us-west-2.amazonaws.com/awsappsync/resources/dynamodb/AmazonDynamoDBCFTemplate.yaml \
    --capabilities CAPABILITY_NAMED_IAM

After running this command a AppSyncTutorial-Post table is created

Create GraphQL API with AppSync console

Open AWS AppSync console

CreateAPI

Click Create API

CreateAPI

Choose Create with wizard, then click Start

CreateAPI

Enter Model name - AWSAppSyncTutorial
Click Remove field to remove unnecessary fields
Click Create
Enter API name, such as AWSAppSyncTutorial
Click Create
Once created, select the Schema tab in the menu on the left

CreateAPI

Replace content with below code, then click Save Schema

schema {
    query: Query
    mutation: Mutation
}

type Query {
    getPost(id: ID): Post
}

type Mutation {
    addPost(
        id: ID!
        author: String!
        title: String!
        content: String!
        url: String!
    ): Post!
}

type Post {
    id: ID!
    author: String
    title: String
    content: String
    url: String
    ups: Int!
    downs: Int!
    version: Int!
}

CreateAPI

Next, to create source for API, choose Data Sources tab
Click Create data source

CreateAPI

Enter source name, such as: PostDynamoDBTable
Select DynamoDB table for data source type
Select the region that created DynamoDB table
Select AppSyncTutorial-Post table
Select New role and click Create

CreateAPI

Result after creation:

CreateAPI