Set up alerts for the OnFailure queue

Author: pauxiel

serverless.yml

@@ -118,6 +118,53 @@ functions:
 resources:
   Resources:
 
+    AlarmTopic:
+      Type: AWS::SNS::Topic
+
+    AlarmTopicSubscription:
+      Type: AWS::SNS::Subscription
+      Properties:
+        Endpoint: Obayuwanap@gmail.com
+        Protocol: email
+        TopicArn: !Ref AlarmTopic
+
+    OnFailureQueueAlarm:
+      Type: AWS::CloudWatch::Alarm
+      Properties:
+        AlarmName: '[${sls:stage}] [NotifyRestaurant function] Failed events detected in OnFailure destination'
+        MetricName: ApproximateNumberOfMessagesVisible
+        Namespace: AWS/SQS
+        Statistic: Maximum
+        Period: 300
+        EvaluationPeriods: 1
+        Threshold: 0
+        ComparisonOperator: GreaterThanThreshold
+        TreatMissingData: notBreaching
+        Dimensions:
+          - Name: QueueName
+            Value: !GetAtt OnFailureQueue.QueueName
+        AlarmActions:
+          - !Ref AlarmTopic
+
+    DestinationDeliveryFailuresAlarm:
+      Type: AWS::CloudWatch::Alarm
+      Properties:
+        AlarmName: '[${sls:stage}] [NotifyRestaurant function] Failed to deliver failed events to OnFailure destination'
+        MetricName: DestinationDeliveryFailures
+        Namespace: AWS/Lambda
+        Statistic: Average
+        Period: 300
+        EvaluationPeriods: 1
+        Threshold: 0
+        ComparisonOperator: GreaterThanThreshold
+        TreatMissingData: notBreaching
+        Dimensions:
+          - Name: FunctionName
+            Value: !Ref NotifyDashrestaurantLambdaFunction
+        AlarmActions:
+          - !Ref AlarmTopic
+
+
     OnFailureQueue:
       Type: AWS::SQS::Queue