resource "aws_cloudwatch_metric_alarm" "unconsumed" {
	alarm_name = "${length(var.sqs_events_name) > 0 ? var.sqs_events_name : var.management_service_name}${length(var.sqs_events_name) > 0 ? "" : "-events"}-unconsumed"
	alarm_description = "Alert when queue has aging messages."
	metric_name = "ApproximateAgeOfOldestMessage"
	comparison_operator = "GreaterThanOrEqualToThreshold"
	evaluation_periods = 10
	period = 60
	namespace = "AWS/SQS"
	statistic = "Maximum"
	threshold = 1800
	dimensions {
		QueueName = "${length(var.sqs_events_name) > 0 ? var.sqs_events_name : var.management_service_name}${length(var.sqs_events_name) > 0 ? "" : "-events"}"
	}
	alarm_actions = ["${aws_sns_topic.management-alerts.arn}"]
}

resource "aws_cloudwatch_metric_alarm" "failures-present" {
	alarm_name = "${length(var.sqs_events_name) > 0 ? var.sqs_events_name : var.management_service_name}${length(var.sqs_events_name) > 0 ? "" : "-events"}-failed-present"
	alarm_description = "Alert when a message has failed."
	metric_name = "ApproximateNumberOfMessagesVisible"
	comparison_operator = "GreaterThanOrEqualToThreshold"
	evaluation_periods = 2
	period = 60
	namespace = "AWS/SQS"
	statistic = "Sum"
	threshold = 1
	dimensions {
		QueueName = "${length(var.sqs_events_name) > 0 ? var.sqs_events_name : var.management_service_name}${length(var.sqs_events_name) > 0 ? "" : "-events"}-failed"
	}
	alarm_actions = ["${aws_sns_topic.management-alerts.arn}"]
}

resource "aws_cloudwatch_metric_alarm" "unhealthy" {
	alarm_name = "UnhealthyHostCount"
	alarm_description = "Alert when any ELB has unhealthy hosts."
	metric_name = "UnHealthyHostCount"
	comparison_operator = "GreaterThanOrEqualToThreshold"
	evaluation_periods = 15
	period = 60
	namespace = "AWS/ELB"
	statistic = "Maximum"
	threshold = 1
	alarm_actions = ["${aws_sns_topic.management-alerts.arn}"]
}