MyFunction-cloudformation-template.json (just DurationAlarm)

MyFunction-cloudformation-template.json

{
  "AWSTemplateFormatVersion":"2010-09-09",
  "Description":"Lambda resource stack creation using Amplify CLI",
  "Parameters":{
    "env":{
      "Type":"String"
    },
    "monitoringTopicsAlarmsTopicArn":{
      "Type":"String"
    },
    "maxDurationInMs":{
      "Type":"String",
      "Default":"maxDurationInMs",
      "Description":"Acceptable time to the function execute without throw an alarm."
    }
  },
  "Conditions":{
    ...
  },
  "Resources":{
    ...    "DurationAlarm":{
      "Type":"AWS::CloudWatch::Alarm",
      "DependsOn":[
        "LambdaFunction"
      ],
      "Properties":{
        "AlarmActions":[
          {
            "Ref":"monitoringTopicsAlarmsTopicArn"
          }
        ],
        "AlarmDescription":"Enters ALARM state because we have functions taking longer than expected. Please adjust the available lambda process time accordingly, then replay any  failed events. See 'Duration' section on the  following link: http://docs.aws.amazon.com/lambda/latest/dg/monitoring-functions-metrics.html for more information.",
        "AlarmName":{
          "Fn::Join":[
            "",
            [
              {
                "Ref":"LambdaFunction"
              },
              "-duration"
            ]
          ]
        },
        "ComparisonOperator":"GreaterThanThreshold",
        "Dimensions":[
          {
            "Name":"FunctionName",
            "Value":{
              "Ref":"LambdaFunction"
            }
          }
        ],
        "EvaluationPeriods":1,
        "InsufficientDataActions":[
          {
            "Ref":"monitoringTopicsAlarmsTopicArn"
          }
        ],
        "MetricName":"Duration",
        "Namespace":"AWS/Lambda",
        "OKActions":[
          {
            "Ref":"monitoringTopicsAlarmsTopicArn"
          }
        ],
        "Period":60,
        "Statistic":"Maximum",
        "Threshold":{
          "Ref":"maxDurationInMs"
        },
        "TreatMissingData":"notBreaching",
        "Unit":"Milliseconds"
      }
    }
  },
  "Outputs":{
    ...
  }
}