{{- if .DeploymentConfiguration.Rollback.CPUUtilization}}
CPURollbackAlarm:
  Metadata:
    'aws:copilot:description': "A CloudWatch alarm associated with CPU utilization for deployment rollbacks"
  Type: AWS::CloudWatch::Alarm
  Properties:
    AlarmDescription: "Roll back ECS service if CPU utilization is greater than or equal to {{.DeploymentConfiguration.Rollback.CPUUtilization}}% twice in 3 minutes."
    AlarmName: {{.DeploymentConfiguration.Rollback.TruncateAlarmName .AppName .EnvName .WorkloadName "CopilotRollbackCPUAlarm"}}
    Namespace: 'AWS/ECS'
    Dimensions:
      - Name: ClusterName
        Value:
          Fn::ImportValue:
            !Sub '${AppName}-${EnvName}-ClusterId'
      - Name: ServiceName
        Value: !Select [2, !Split ["/", !Ref Service]]
    MetricName: 'CPUUtilization'
    ComparisonOperator: 'GreaterThanOrEqualToThreshold'
    DatapointsToAlarm: 2
    EvaluationPeriods: 3
    Period: 60
    Statistic: 'Average'
    Threshold: {{.DeploymentConfiguration.Rollback.CPUUtilization}}
    Unit: 'Percent'
{{- end}}
  
{{- if .DeploymentConfiguration.Rollback.MemoryUtilization}}

MemoryRollbackAlarm:
  Metadata:
    'aws:copilot:description': "A CloudWatch alarm associated with memory utilization for deployment rollbacks"
  Type: AWS::CloudWatch::Alarm
  Properties:
    AlarmDescription: "Roll back ECS service if memory utilization is greater than or equal to {{.DeploymentConfiguration.Rollback.MemoryUtilization}}% twice in 3 minutes."
    AlarmName: {{.DeploymentConfiguration.Rollback.TruncateAlarmName .AppName .EnvName .WorkloadName "CopilotRollbackMemAlarm"}}
    Namespace: 'AWS/ECS'
    Dimensions:
      - Name: ClusterName
        Value:
          Fn::ImportValue:
            !Sub '${AppName}-${EnvName}-ClusterId'
      - Name: ServiceName
        Value: !Select [2, !Split ["/", !Ref Service]]
    MetricName: 'MemoryUtilization'
    ComparisonOperator: 'GreaterThanOrEqualToThreshold'
    DatapointsToAlarm: 2
    EvaluationPeriods: 3
    Period: 60
    Statistic: 'Average'
    Threshold: {{.DeploymentConfiguration.Rollback.MemoryUtilization}}
    Unit: 'Percent'
{{- end}}

{{- if .DeploymentConfiguration.Rollback.MessagesDelayed}}
MessagesDelayedRollbackAlarm:
  Metadata:
    'aws:copilot:description': "A CloudWatch alarm associated with number of messages delayed for deployment rollbacks"
  Type: AWS::CloudWatch::Alarm
  Properties:
    AlarmDescription: "Roll back worker service if number of messages delayed is greater than or equal to {{.DeploymentConfiguration.Rollback.MessagesDelayed}} twice in 3 minutes."
    AlarmName: {{.DeploymentConfiguration.Rollback.TruncateAlarmName .AppName .EnvName .WorkloadName "CopilotRollbackMsgsDelayedAlarm"}}
    Namespace: 'AWS/SQS'
    Dimensions:
      - Name: QueueName
        Value: !GetAtt EventsQueue.QueueName
    MetricName: 'ApproximateNumberOfMessagesDelayed'
    ComparisonOperator: 'GreaterThanOrEqualToThreshold'
    DatapointsToAlarm: 2
    EvaluationPeriods: 3
    Period: 60
    Statistic: 'Average'
    Threshold: {{.DeploymentConfiguration.Rollback.MessagesDelayed}}
    Unit: 'Count'
{{- end}}