Merge pull request #74 from base2Services/feature/efs-total-storage-l…

…imit alarm to monitor total file size of an efs volume
base2Services · Aug 3, 2022 · 99c16b9 · 99c16b9
2 parents eb887f7 + 7ad4d97
commit 99c16b9
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diff --git a/lib/cfnguardian/models/alarm.rb b/lib/cfnguardian/models/alarm.rb
@@ -299,11 +299,14 @@ def initialize(resource)
     end
 
     class ElasticFileSystemAlarm < BaseAlarm
-      def initialize(resource)
+      def initialize(resource, storage_class = nil)
         super(resource)
         @group = 'ElasticFileSystem'
         @namespace = 'AWS/EFS'
         @dimensions = { FileSystemId: resource['Id'] }
+        unless storage_class.nil?
+          @dimensions[:StorageClass] = storage_class
+        end
       end
     end
 

diff --git a/lib/cfnguardian/resources/elastic_file_system.rb b/lib/cfnguardian/resources/elastic_file_system.rb
@@ -22,6 +22,18 @@ def default_alarms
         alarm.treat_missing_data = 'notBreaching'
         alarm.datapoints_to_alarm = 5
         @alarms.push(alarm)
+
+        alarm = CfnGuardian::Models::ElasticFileSystemAlarm.new(@resource, 'Total')
+        alarm.name = 'TotalStorageUsed'
+        alarm.metric_name = 'StorageBytes'
+        alarm.comparison_operator = 'GreaterThanThreshold'
+        alarm.threshold = 10000000000 # 10GB default
+        alarm.evaluation_periods = 60
+        alarm.treat_missing_data = 'notBreaching'
+        alarm.datapoints_to_alarm = 30
+        alarm.alarm_action = 'Task'
+        alarm.enabled = false
+        @alarms.push(alarm)
       end
     end
   end