Method transaction

lib/sequelize.js:1095–1129

* Start a transaction. When using transactions, you should pass the transaction in the options argument in order for the query to happen under that transaction @see {@link Transaction} * * If you have [CLS](https://github.com/Jeff-Lewis/cls-hooked) enabled, the transaction will automatically b

(options, autoCallback)

   * @returns {Promise}
   */
  async transaction(options, autoCallback) {
    if (typeof options === class="st">'function') {
      autoCallback = options;
      options = undefined;
    }

    const transaction = new Transaction(this, options);

    if (!autoCallback) {
      await transaction.prepareEnvironment(false);
      return transaction;
    }

    class="cm">// autoCallback provided
    return Sequelize._clsRun(async () => {
      try {
        await transaction.prepareEnvironment();
        const result = await autoCallback(transaction);
        await transaction.commit();
        return await result;
      } catch (err) {
        try {
          if (!transaction.finished) {
            await transaction.rollback();
          } else {
            class="cm">// release the connection, even if we don't need to rollback
            await transaction.cleanup();
          }
        } catch (err0) {
          class="cm">// ignore
        }
        throw err;
      }
    });
  }

  /**
   * Use CLS (Continuation Local Storage) with Sequelize. With Continuation