template.yml

AWSTemplateFormatVersion: '2010-09-09'
Transform: 'AWS::Serverless-2016-10-31'
Description: An example app with a Lambda function that sends texts via SNS.
Parameters:
  # Pass secrets that you don't want stored in your code repository as parameters
  MyPhoneNumber:
    Type: String

Resources:
  CICDSendTextFunction:
    # A Lambda function that sends messages to an SNS topic
    Type: 'AWS::Serverless::Function'
    Properties:
      FunctionName: CICDSendTextFunction
      Handler: send_text_function.lambda_handler
      Runtime: python3.7
      Description: A Lambda function that sends text messages 
      Timeout: 120
      Policies:
      # Find more SAM IAM policy templates here: https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/serverless-policy-templates.html
      - SNSPublishMessagePolicy:
          # Our function only has permissions to send to the SNS topic we created
          TopicName: !GetAtt CICDSendTextSNSTopic.TopicName
      Environment:
        Variables:
          # If your functions need to use variables passed as parameters, reference them as environment variables
          MY_PHONE_NUMBER: !Ref MyPhoneNumber
          # You can also reference other resources created in this template as environment variables
          SNS_TOPIC_ARN: !Ref CICDSendTextSNSTopic

  CICDSendTextSNSTopic:
    # An SNS topic
    Type: AWS::SNS::Topic
    Properties:
      # Subscribing yourself to receive messages from this topic
      Subscription:
      - Protocol: sms
        Endpoint: !Ref MyPhoneNumber