Update lambda_function.py

Author: Nils

Log/lambda_function.py

@@ -219,6 +219,7 @@ def parse_event_source(event, key):
  return "kinesis"
  if "awslog" in event:
  return "cloudwatch"
- if "s3" in event:
- return "s3"
+ if "Records" in event and len(event["Records"]) > 0:
+ if "s3" in event["Records"][0]:
+ return "s3"
  return "aws"