Implementing Transaction Handling

Provide an example of implementing transaction handling in a RAG integrated system to ensure data consistency and rollback in case of errors.

const dbTransactionButton = document.getElementById('db-transaction-btn');

dbTransactionButton.addEventListener('click', async () => {
  try {
    await startTransaction();
    await performDbOperations(); // Placeholder for multiple database operations
    await commitTransaction();
    alert('Transaction completed successfully');
  } catch (error) {
    await rollbackTransaction();
    alert('Transaction failed. Rollback executed.');
  }
});

This JavaScript code sets up an event listener on a button with the id 'db-transaction-btn'. When the button is clicked, it starts a database transaction, attempts to perform multiple database operations, commits the transaction if all operations are successful, or rolls back the transaction in case an error occurs. This code assumes the existence of functions startTransaction, performDbOperations, commitTransaction, and rollbackTransaction, which would contain the specific logic for interacting with the database.

/* HTML */
<button id="db-transaction-btn">Start DB Transaction</button>

This is the HTML code to create a button with the id 'db-transaction-btn'. Clicking this button will trigger the JavaScript event listener to start the transaction process.

/* CSS */
#db-transaction-btn {
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
  background-color: #4CAF50;
  color: white;
  border: none;
  border-radius: 5px;
}

#db-transaction-btn:hover {
  background-color: #45a049;
}

This CSS styles the button with the id 'db-transaction-btn' giving it a green background, white text, and some padding and border-radius for aesthetics. It also changes the background color slightly when the button is hovered over to provide visual feedback to the user.