service: lambda-sfn-sls
frameworkVersion: '^3' # require serverless v3 or later

plugins:
  - serverless-plugin-typescript # enable TypeScript support for Lambda functions
  - serverless-step-functions # enable Step Functions support for Serverless Framework

provider:
  name: aws

  # common configuration for all Lambda functions in this stack
  runtime: nodejs14.x
  architecture: arm64 # use Graviton for running all Lambda functions

  # use --region option value or the default - us-east-1
  region: ${opt:region, "us-east-1"}

  # override the default stage (dev)
  stage: ${opt:stage, "prod"}

  # optional, Lambda function's memory size in MB, default is 1024
  memorySize: 256

  # Lambda's default IAM role
  iam:
    role:
      statements:
        - Effect: "Allow"
          Action:
            - "states:StartExecution"
          Resource:
            Fn::GetAtt: [HelloWorldStateMachine, Arn]

# Step Functions
stepFunctions:
  validate: true # pre-deployment state machine validation
  stateMachines:
    helloWorld:
      name: HelloWorldStateMachine
      type: EXPRESS
      loggingConfig:
        level: ALL
        includeExecutionData: false
        destinations:
          - Fn::GetAtt: [ StateMachineLogGroup, Arn ]
      # definition can be embedded into this template or managed in a separate file
      definition: ${file(./statemachine/stateMachine.asl.yml)}

# Lambda functions
functions:
  invokeSFN:
    handler: src/handler.invokeSFN
    environment:
      STATE_MACHINE_ARN:
        Fn::GetAtt: [HelloWorldStateMachine, Arn]      

resources:
  # Override the default description
  Description: Lambda function invoking a Step Function (Serverless Framework).

  Resources:
    StateMachineLogGroup:
      Type: AWS::Logs::LogGroup
      Properties:
        LogGroupName: !Join [ "/", [ "stepfunctions", HelloWorldStateMachine]]

  Outputs:
    LambdaName:
      Description: "Lambda function name"
      Value: "${self:service}-${sls:stage}-invokeSFN"