transaction transaction.lib.ts

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  type OptimisticLockTransactionBody = (onLockFailure: () => void) => Promise<void>;
 
export const optimisticLockTransaction = async (
  retryTime,
  transactionBody: OptimisticLockTransactionBody,
) => {
  const lockFailure = () => {
    throw new Error("Optimistic Lock Failure");
  };
 
  let lastError = null;
  let tryTime = 0;
  while (tryTime++ < retryTime) {
    try {
      return await transactionBody(lockFailure);
    } catch (e) {
      e.lastError = lastError;
      lastError = e;
    }
  }
  throw lastError || new Error("Optimistic Lock Failure");
};