with-scheduledevents-example-use-app-spec.md

AWS SAM template for a CloudWatch Events application

You can build this application using AWS SAM. To learn more about creating AWS SAM templates, see AWS SAM template basics in the AWS Serverless Application Model Developer Guide.

Below is a sample AWS SAM template for the Lambda application from the tutorial. Copy the text below to a .yaml file and save it next to the ZIP package you created previously. Note that the Handler and Runtime parameter values should match the ones you used when you created the function in the previous section.

Example template.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Parameters: 
  NotificationEmail:
    Type: String
Resources:
  CheckWebsitePeriodically:
    Type: [AWS::Serverless::Function](https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/sam-resource-function.html)
    Properties:
      Handler: LambdaFunctionOverHttps.handler
      Runtime: runtime
      Policies: AmazonDynamoDBFullAccess
      Events:
        CheckWebsiteScheduledEvent:
          Type: Schedule
          Properties:
            Schedule: rate(1 minute)

  AlarmTopic:
    Type: AWS::SNS::Topic
    Properties:
      Subscription:
      - Protocol: email
        Endpoint: !Ref NotificationEmail

  Alarm:
    Type: AWS::CloudWatch::Alarm
    Properties:
      AlarmActions:
        - !Ref AlarmTopic
      ComparisonOperator: GreaterThanOrEqualToThreshold
      Dimensions:
        - Name: FunctionName
          Value: !Ref CheckWebsitePeriodically
      EvaluationPeriods: 1
      MetricName: Errors
      Namespace: AWS/Lambda
      Period: 60
      Statistic: Sum
      Threshold: '1'

For information on how to package and deploy your serverless application using the package and deploy commands, see Deploying serverless applications in the AWS Serverless Application Model Developer Guide.