Create and Update SNS Subscription Filter Policy using Python Boto3

Code snippet to update the sns subscription filter policy. Before updating the filter policy, update the filter policy scope also. By default the FilterPolicyScope is MessageAttributes

import boto3

# Create Boto3 SNS Client
sns_client = boto3.client('sns')

# This is sample Subscription Arn Replace It with the exact subscription Arn
subscription_arn = 'arn:aws:sns:us-east-1:88383899399:VerifyEmail:kkwi-4bba-iiio-kkkeioeoo'

# Define your updated filter policy
updated_filter_policy = {
   'detail-type': ['AWS API Call via CloudTrail']},
   'detail': {'eventName': ['CreateVolume']}
}

# Convert the updated filter policy to a JSON-formatted string
updated_filter_policy_json = json.dumps(updated_filter_policy)

try:
   # Update the subscription Filter PolicyScope
   sns_client.set_subscription_attributes(
       SubscriptionArn=subscription_arn,
       AttributeName='FilterPolicyScope',
       AttributeValue='MessageBody' # By Default It is MessageAttributes
   )
   # Update the subscription filter policy
   sns_client.set_subscription_attributes(
       SubscriptionArn=subscription_arn,
       AttributeName='FilterPolicy',
       AttributeValue=updated_filter_policy_json
   )

   print(f"Subscription filter policy for {subscription_arn} has been updated.")
except Exception as e:
   print(f"Exception: {e}")
   raise e