enable dead letter queue

Author: Karthikeyannhs

infrastructure/modules/lambda/lambda.tf

@@ -33,6 +33,10 @@ resource "aws_lambda_function" "eligibility_signposting_lambda" {
     security_group_ids = var.security_group_ids
   }
 
+  dead_letter_config {
+    target_arn = aws_sqs_queue.lambda_dlq.arn
+  }
+
   tracing_config {
     mode = "Active"
   }

infrastructure/modules/lambda/sqs.tf

@@ -0,0 +1,4 @@
+resource "aws_sqs_queue" "lambda_dlq" {
+  name = "lambda-campaign-dlq"
+  kms_master_key_id = aws_kms_key.lambda_cmk.arn
+}