Manually resolve custom CloudFormation resource

resolve-custom-rss.py

import json
from urllib.request import Request, urlopen

print(f"Copy-paste the JSON received by the custom resource lambda")
line = input()
event = json.loads(line)

r = json.dumps({
    'Status': 'SUCCESS',
    'Reason': 'Forced',
    'PhysicalResourceId': event['LogicalResourceId'],
    'StackId': event['StackId'],
    'RequestId': event['RequestId'],
    'LogicalResourceId': event['LogicalResourceId'],
    'Data': { 'Message': 'Forced' }
})
d = str.encode(r)
headers = {
    'Content-Type': '',
    'Content-Length': str(len(d))
}
req = Request(method='PUT', event['ResponseURL'], headers=headers, data=d)
resp = urlopen(req)