serverless.yml

service: test-appsync

provider:
  name: aws
  runtime: nodejs18.x
  deploymentBucket:
    name: testbucket

resources:
  Resources:
    DDBTable:
      Type: AWS::DynamoDB::Table
      Properties:
        TableName: table1
        AttributeDefinitions:
          - AttributeName: id
            AttributeType: S
        KeySchema:
          - AttributeName: id
            KeyType: HASH
        BillingMode: PAY_PER_REQUEST
    RDSCluster:
      Type: AWS::RDS::DBCluster
      Properties:
        DatabaseName: ${self:custom.rds.dbname}
        Engine: aurora-postgresql
        DBClusterIdentifier: ${self:custom.rds.dbcluster}
        MasterUsername: ${self:custom.rds.username}
        MasterUserPassword: ${self:custom.rds.password}
    RDSDatabaseSecret:
      Type: AWS::SecretsManager::Secret
      Properties:
        Name: rds-db-secret
        SecretString: ${self:custom.rds.password}

custom:
  rds:
    dbcluster: c1
    dbname: testappsync
    username: testuser
    password: testpass
  appSync:
    name: test-api
    schema: schema.graphql
    authenticationType: API_KEY
    dataSources:
      - type: AMAZON_DYNAMODB
        name: ds_ddb
        description: DynamoDB data source
        config:
          tableName: { Ref: DDBTable }
      - type: RELATIONAL_DATABASE
        name: ds_rds
        description: RDS data source
        config:
          databaseName: ${self:custom.rds.dbname}
          dbClusterIdentifier: ${self:custom.rds.dbcluster}
          awsSecretStoreArn: { Ref: RDSDatabaseSecret }
    mappingTemplatesLocation: ./templates
    mappingTemplates:
      # mapping templates for DynamoDB data source
      - type: Mutation
        field: addPostDDB
        dataSource: ds_ddb
        request: ddb.PutItem.request.vlt
        response: ddb.PutItem.response.vlt
      - type: Query
        field: getPostsDDB
        dataSource: ds_ddb
        request: ddb.Scan.request.vlt
        response: ddb.Scan.response.vlt
      # mapping templates for RDS Aurora data source
      - type: Mutation
        field: addPostRDS
        dataSource: ds_rds
        request: rds.insert.request.vlt
        response: rds.insert.response.vlt
      - type: Query
        field: getPostsRDS
        dataSource: ds_rds
        request: rds.select.request.vlt
        response: rds.select.response.vlt
  localstack:
    stages:
      - local
    endpoints:
      AppSync: http://localhost:4605

plugins:
  - serverless-localstack
  - serverless-appsync-plugin
  - serverless-deployment-bucket