Editing Step Functions (section)

=== Write Success Log ===
* '''Type:''' Task  
* '''Purpose:''' Logs the successful completion of the state machine and includes key file details for tracking.  
* '''Function Used:''' Calls the `stateMachine_LogHandler` Lambda function.  
* '''Log Details:'''  
  * Log Group: stateMachine  
  * Log Stream: SuccessLogs  
  * Status: Success  
  * Additional Information: Includes bucket name, file name, file size, and unique file identifier.  
  * Success Message: "Execution completed successfully."  
* '''Next Step:''' '''''Success State'''''
<blockquote>
 '''Error Handling''' - Errors are handled by sending them to Check Error Type, where conditions can route the execution flow to different error-handling states.
'''Remark:''' Currently, from the State Machine CloudWatch logs, we cannot capture the filename for Lambda function timeout scenarios. If we encounter more Lambda function timeouts, we can capture the filename in the State Machine CloudWatch logs by using "ErrorEquals" and "Catch" to match error strings that come from Lambda exceptions (timeout) and generate the State Machine log with the filename.

The only downside of this workaround is that the State Machine becomes more complex since we have to add a Catch for every Lambda function to capture the timeout keyword. We cannot use "ClientError" because the Lambda job quits as soon as the timeout occurs.</blockquote>