Deploy Step Functions in Serverless Framework

deploy-stepfunctions.txt

paso 1: instalar serverless framework
sudo npm i -g serverless

paso 2: crear un proyecto vacío
serverless create --template aws-nodejs --path step-functions-demo

serverless.yml:

service: step-functions-demo

provider:
  name: aws
  runtime: nodejs12.x

functions:
  hello:
    handler: handler.hello

plugins:
  - serverless-step-functions



paso 3: instalar el plugin de step functions:
serverless plugin install --name serverless-step-functions

paso 4: instalar AWS Pseudo Parameters
npm install --save-dev serverless-pseudo-parameters

y también agregarlo en el serverless.yml:

plugins:
  - serverless-pseudo-parameters


Paso 5 Agregar bloque de lambdas y step functions en serverless.yml

functions:
  hello:
    handler: handler.hello
  ciao:
    handler: handler.ciao
stepFunctions:
  stateMachines:
    hellostepfunc1:
      name: 'hello'
      definition:
        Comment: "A Hello World example"
        StartAt: HelloWorld
        States:
          HelloWorld:
            Type: Task
            Resource: "arn:aws:lambda:#{AWS::Region}:#{AWS::AccountId}:function:${self:service}-${opt:stage}-hello"
            Next: CiaoWorld
          CiaoWorld:
            Type: Task
            Resource: "arn:aws:lambda:#{AWS::Region}:#{AWS::AccountId}:function:${self:service}-${opt:stage}-ciao"
            End: true

Paso 6: editar el handler.js

module.exports.hello = (event, context, callback) => {
  callback(null, null);
};
module.exports.ciao = (event, context, callback) => {
  const response = {
    statusCode: 200,
    body: JSON.stringify({
      message: 'ciao world!'
    }),
  };
  callback(null, response);
};



Paso 7: Deploy 

serverless deploy -v


Paso 8: Invoke step functions 

serverless invoke stepf -n hellostepfunc1 --stage dev