Merge pull request #31 from TechNative-B-V/feature/update-alarm-creat…

…or-function

Updated err_msg with the lambda ARN incase the lambda function might have an error to also display the Lambda ARN in the error details

alarm_creator/lambda_function.py

@@ -1,9 +1,5 @@
-import boto3
-import json
-import os
-import logging
-import traceback
-import sys
+import boto3, json, os
+import logging, traceback, sys
 import datetime
 from actions import AWS_Alarms, DeleteAlarms
 
@@ -14,8 +10,9 @@
 sns_arn = os.environ["SNS_ARN"]
 
 
+
 def lambda_handler(event, context):
-    print(event)
+    function_detail = context.invoked_function_arn
 
     try:
         print("{}: AWS_Alarms()".format(datetime.datetime.now()))
@@ -28,17 +25,20 @@ def lambda_handler(event, context):
         traceback_string = traceback.format_exception(
             exception_type, exception_value, exception_traceback
         )
+        # Create a JSON dump with the details to publish to the SNS topic in case of an exeception.
         err_msg = json.dumps(
             {
+                "functionDetail": function_detail,
                 "errorType": exception_type.__name__,
                 "errorMessage": str(exception_value),
                 "stackTrace": traceback_string,
             }
         )
 
+        # Publish the error message to the SNS topic
         client.publish(
             TopicArn=f"{sns_arn}",
-            Subject="Error Creating CloudWatch Alarm",
+            Subject=f"Error Creating CloudWatch Alarm",
             Message=json.dumps({"default": err_msg}),
             MessageStructure="json",
         )