serverless.yml

service: serverless-appsync-lambda-httpresource-example

provider:
  name: aws
  runtime: nodejs10.x
  region: eu-west-1

plugins:
  - serverless-webpack
  - serverless-appsync-plugin
  - serverless-appsync-offline
  - serverless-offline

functions:
  graphql:
    handler: src/handler.graphqlHandler

custom:
  accountId: 123456789 # use correct AWS accountId
  webpack:
    includeModules: true
    packager: 'yarn'
    excludeFiles:
      - '**/*.spec.*'
  appsync-offline:
    port: 62222
    dynamodb:
      client:
        endpoint: "http://localhost:8000"
  appsync-emulator:
    buildPrefix: .webpack/service
  appSync:
    name: ${self:service}
    authenticationType: API_KEY
    logConfig:
      loggingRoleArn: { Fn::GetAtt: [AppSyncLoggingServiceRole, Arn] }
      level: ALL
    mappingTemplates:
      - dataSource: myDataSource
        type: Query
        field: getWeatherWithHTTPResource
        request: "getWeatherWithHTTPResource-request-mapping-template.vtl"
        response: "getWeatherWithHTTPResource-response-mapping-template.vtl"
      - dataSource: myLambda
        type: Query
        field: getWeatherWithLambda
        request: "getWeatherWithLambda-request-mapping-template.vtl"
        response: "getWeatherWithLambda-response-mapping-template.vtl"
    serviceRole: "AppSyncServiceRole"
    dataSources:
      - type: AWS_LAMBDA
        name: myLambda
        description: 'Lambda DataSource'
        config:
          functionName: graphql
          lambdaFunctionArn: { Fn::GetAtt: [GraphqlLambdaFunction, Arn] }
          serviceRoleArn: { Fn::GetAtt: [AppSyncLambdaServiceRole, Arn] }
      - type: HTTP
        name: myDataSource
        description: 'HTTP Endpoint'
        config:
          endpoint: 'https://wttr.in/'

resources:
  Resources:
    AppSyncLambdaServiceRole:
      Type: "AWS::IAM::Role"
      Properties:
        RoleName: "${self:service}-Lambda-AppSyncServiceRole"
        AssumeRolePolicyDocument:
          Version: "2012-10-17"
          Statement:
            - Effect: "Allow"
              Principal:
                Service:
                  - "appsync.amazonaws.com"
              Action:
                - "sts:AssumeRole"
        Policies:
          - PolicyName: "Lambda-AppSyncServiceRole-Policy"
            PolicyDocument:
              Version: "2012-10-17"
              Statement:
                - Effect: "Allow"
                  Action:
                    - "lambda:invokeFunction"
                  Resource:
                    - "arn:aws:lambda:eu-west-1:${self:custom.accountId}:function:${self:service}"
                    - "arn:aws:lambda:eu-west-1:${self:custom.accountId}:function:${self:service}:*"
    AppSyncLoggingServiceRole:
      Type: "AWS::IAM::Role"
      Properties:
        RoleName: "${self:service}-Logging-AppSyncLoggingServiceRole"
        AssumeRolePolicyDocument:
          Version: "2012-10-17"
          Statement:
            - Effect: "Allow"
              Principal:
                Service:
                  - "appsync.amazonaws.com"
              Action:
                - "sts:AssumeRole"
        Policies:
          - PolicyName: "Logging-AppSyncLoggingServiceRole"
            PolicyDocument:
              Version: "2012-10-17"
              Statement:
                - Effect: "Allow"
                  Action:
                    - "logs:CreateLogGroup"
                    - "logs:CreateLogStream"
                    - "logs:PutLogEvents"
                  Resource:
                    - "*"