From e7ecdff2e8fee889c4b702b7bf0764b6c12b05d1 Mon Sep 17 00:00:00 2001
From: jamesthompson26-nhs <james.thompson26@nhs.net>
Date: Wed, 9 Apr 2025 10:34:03 +0100
Subject: [PATCH] CCM-8589: Event Publisher DLQ Alerting

---
 .../cloudwatch_metric_alarm_dlq_alarm.tf         | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 infrastructure/modules/eventpub/cloudwatch_metric_alarm_dlq_alarm.tf

diff --git a/infrastructure/modules/eventpub/cloudwatch_metric_alarm_dlq_alarm.tf b/infrastructure/modules/eventpub/cloudwatch_metric_alarm_dlq_alarm.tf
new file mode 100644
index 0000000..4ba62ee
--- /dev/null
+++ b/infrastructure/modules/eventpub/cloudwatch_metric_alarm_dlq_alarm.tf
@@ -0,0 +1,16 @@
+resource "aws_cloudwatch_metric_alarm" "dlq_alarm" {
+  alarm_name          = "${local.csi}-dlq-messages-alarm"
+  alarm_description   = "Alarm for messages in the DLQ"
+  comparison_operator = "GreaterThanThreshold"
+  evaluation_periods  = 1
+  metric_name         = "ApproximateNumberOfMessagesVisible"
+  namespace           = "AWS/SQS"
+  period              = 300
+  statistic           = "Sum"
+  threshold           = 0
+  actions_enabled     = true
+
+  dimensions = {
+    QueueName = aws_sqs_queue.dlq.name
+  }
+}