template.yaml

# This is the SAM template that represents the architecture of your serverless application
# https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/serverless-sam-template-basics.html

# The AWSTemplateFormatVersion identifies the capabilities of the template
# https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/format-version-structure.html
AWSTemplateFormatVersion: 2010-09-09
Description: >-
  health-check-sites

# Transform section specifies one or more macros that AWS CloudFormation uses to process your template
# https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/transform-section-structure.html
Transform:
- AWS::Serverless-2016-10-31

Parameters:
  WebhookUrl:
    Type: String
    Description: Slack web hook url
    Default: localhost
  Targets:
    Type: CommaDelimitedList
    Description: Target sites list
    Default: https://google.com,https://yahoo.co.jp

# Resources declares the AWS resources that you want to include in the stack
# https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/resources-section-structure.html
Resources:  
  # This is the Lambda function definition associated with the source code: sqs-payload-logger.js. For all available properties, see
  # https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlessfunction
  HealthCheckSites:
    Type: AWS::Serverless::Function
    Properties:
      Description: A Lambda function that logs the payload of messages sent to an associated SQS queue.
      Runtime: nodejs14.x
      Architectures:
        - x86_64
      Handler: src/handlers/health-check-sites.healthCheckSites
      # This property associates this Lambda function with a scheduled CloudWatch Event. For all available properties, see
      # https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#schedule
      # This example runs every hour.
      Environment:
        Variables:
          WEBHOOK_URL: !Ref WebhookUrl
          TARGETS: !Join
            - ','
            - !Ref Targets
      Events:
        CloudWatchEvent:
          Type: Schedule
          Properties:
            Schedule: cron(0 22 * * ? *)
      MemorySize: 128
      Timeout: 15