## 
# This sample adds an SQS queue and an alarm on queue depth to the environment.
#  It does not provide credentials for accessing that queue or on-instance scripts.
#
# Customers would generally not edit this file.
# Instead, they would have another file sitting in the same directory (or anywhere) with 
#  an option-settings section such as the following (all of these are showing the default value)
#
# option-settings:
#  "aws:elasticbeanstalk:customoption" :
#     VisibilityTimeout : 30
#     AlarmEmail : nobody@amazon.com
#
##

Resources:
  MySQSQueue:
    Type: AWS::SQS::Queue
    Properties: 
      VisibilityTimeout:
        Fn::GetOptionSetting:
          OptionName: VisibilityTimeout
          DefaultValue: 30
  AlarmTopic:
    Type: AWS::SNS::Topic
    Properties: 
      Subscription:
        - Endpoint:
            Fn::GetOptionSetting:
              OptionName: AlarmEmail
              DefaultValue: "nobody@amazon.com"
          Protocol: email
  QueueDepthAlarm:
    Type: AWS::CloudWatch::Alarm
    Properties:
      AlarmDescription: "Alarm if queue depth grows beyond 10 messages"
      Namespace: "AWS/SQS"
      MetricName: ApproximateNumberOfMessagesVisible
      Dimensions:
        - Name: QueueName
          Value : { "Fn::GetAtt" : [ "MySQSQueue", "QueueName"] }
      Statistic: Sum
      Period: 300
      EvaluationPeriods: 1
      Threshold: 10
      ComparisonOperator: GreaterThanThreshold
      AlarmActions:
        - Ref: AlarmTopic
      InsufficientDataActions:
        - Ref: AlarmTopic

Outputs :
  QueueURL: 
    Description : "URL of newly created SQS Queue"
    Value : { Ref : "MySQSQueue" }
  QueueARN :
    Description : "ARN of newly created SQS Queue"
    Value : { "Fn::GetAtt" : [ "MySQSQueue", "Arn"]}
  QueueName :
    Description : "Name newly created SQS Queue"
    Value : { "Fn::GetAtt" : [ "MySQSQueue", "QueueName"]}