SQS Queue as Lambda Trigger in AWS CloudFormation

template.yaml

AWSTemplateFormatVersion : 2010-09-09
Resources:

  LambdaExecutionRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
        - Effect: Allow
          Principal:
            Service:
            - lambda.amazonaws.com
          Action:
          - sts:AssumeRole
      Policies:
        - PolicyName: allowLambdaLogs
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
            - Effect: Allow
              Action:
              - logs:*
              Resource: arn:aws:logs:*:*:*
        - PolicyName: allowSqs
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
            - Effect: Allow
              Action:
              - sqs:ReceiveMessage
              - sqs:DeleteMessage
              - sqs:GetQueueAttributes
              - sqs:ChangeMessageVisibility
              Resource: !GetAtt MyQueue.Arn

  LambdaFunction:
    Type: AWS::Lambda::Function
    Properties:
      Code:
        S3Bucket: my-source-bucket
        S3Key: lambda/my-nodejs-app.zip
      Handler: index.handler
      Role: !GetAtt LambdaExecutionRole.Arn
      Runtime: nodejs8.10
      Timeout: 60
      MemorySize: 512

  LambdaFunctionEventSourceMapping:
    Type: AWS::Lambda::EventSourceMapping
    Properties:
      BatchSize: 10
      Enabled: true
      EventSourceArn: !GetAtt MyQueue.Arn
      FunctionName: !GetAtt LambdaFunction.Arn

  MyQueue:
    Type: AWS::SQS::Queue
    Properties:
      DelaySeconds: 0
      VisibilityTimeout: 120