Resilience Mechanism

TweezerComm has a resilience mechanism for handling transaction completion or cancellation in case of errors or failures. Whenever an error occurs, such as a statusCode != 0 TweezerComm will automatically fall back to this mechanism, ensuring that transactions are completed successfully or through retries and verification steps to prevent inconsistencies.

How it Works

The flow chart describes the flow of the mechanism.

When a transaction requires completion (settlement) or cancellation, and the system verifies whether a response has been received, the flow can vary depending on the reaction.

• If a response was received, the system proceeds to check the StatusCode. If it is equal to 0, it will finish the completion process, else it will trigger the retry mechanism.
• If no response is received, the system retrieves transaction details using the getTransactionByVuid() method.
  • To check if the transaction is finalized, the system evaluates if IsFinalAmount=1 and TransactionDeposited=1/2.
  • If they are not equal to those values, the system triggers the retry mechanism.

The process continuously loops back to the start of the Completion/Cancel flow, ensuring that it continues until a definitive success or failure condition is reached.

See Also