AWSTemplateFormatVersion: '2010-09-09'
Description:  AWS Startup Kit DevOps resources

# Ops stack creation prerequisites:  first create an app stack.

Parameters:

  AppStackName:
    Description: Name of the active CloudFormation stack for your app.
    Type: String
    MinLength: 1
    MaxLength: 255
    AllowedPattern: "^[a-zA-Z][-a-zA-Z0-9]*$"

Resources:

  #  METRIC FILTERS

  LoginLatencyMetricFilter:
    Type: "AWS::Logs::MetricFilter"
    Properties:
      LogGroupName:
        "Fn::Join":
        - ''
        - - '/aws/elasticbeanstalk/'
          - !ImportValue
            "Fn::Sub": "${AppStackName}-EnvironmentName"
          - '/var/log/nodejs/nodejs.log'
      FilterPattern: '[ timestamp, level, message = POST_AUTH_latency, latency ]'
      MetricTransformations:
        -
          MetricValue: $latency
          MetricNamespace: STARTUP_KIT/API
          MetricName: LOGIN_LATENCY

  # ALARMS

  LoginFailureAlarm:
    Type: AWS::CloudWatch::Alarm
    Properties:
      AlarmDescription: Alarm on login attempt failures
      ActionsEnabled: true
      AlarmActions:
      - !Ref StartupKitDevOpsSNSTopic
      MetricName: LOGIN_FAILURE_COUNT
      Namespace: STARTUP_KIT/API
      Statistic: Sum
      Period: 60
      EvaluationPeriods: 1
      Threshold: 10
      ComparisonOperator: GreaterThanThreshold

  # NOTIFICATION RESOURCES

  StartupKitDevOpsSNSTopic:
    Type: "AWS::SNS::Topic"
    Properties:
      DisplayName: STARTUP_KIT_DEVOPS
      TopicName: STARTUP_KIT_DEVOPS