73 lines
1.7 KiB
JavaScript
73 lines
1.7 KiB
JavaScript
'use strict'
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const retry = require('async/retry')
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const db = require('../initializers/database')
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const logger = require('./logger')
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const utils = {
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commitTransaction,
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retryTransactionWrapper,
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rollbackTransaction,
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startSerializableTransaction,
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transactionRetryer
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}
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function commitTransaction (t, callback) {
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return t.commit().asCallback(callback)
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}
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function rollbackTransaction (err, t, callback) {
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// Try to rollback transaction
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if (t) {
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// Do not catch err, report the original one
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t.rollback().asCallback(function () {
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return callback(err)
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})
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} else {
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return callback(err)
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}
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}
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// { arguments, errorMessage }
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function retryTransactionWrapper (functionToRetry, options, finalCallback) {
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const args = options.arguments ? options.arguments : []
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utils.transactionRetryer(
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function (callback) {
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return functionToRetry.apply(this, args.concat([ callback ]))
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},
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function (err) {
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if (err) {
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logger.error(options.errorMessage, { error: err })
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}
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// Do not return the error, continue the process
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return finalCallback(null)
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}
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)
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}
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function transactionRetryer (func, callback) {
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retry({
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times: 5,
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errorFilter: function (err) {
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const willRetry = (err.name === 'SequelizeDatabaseError')
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logger.debug('Maybe retrying the transaction function.', { willRetry })
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return willRetry
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}
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}, func, callback)
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}
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function startSerializableTransaction (callback) {
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db.sequelize.transaction({ isolationLevel: 'SERIALIZABLE' }).asCallback(function (err, t) {
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// We force to return only two parameters
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return callback(err, t)
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})
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}
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// ---------------------------------------------------------------------------
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module.exports = utils
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