85 lines
1.8 KiB
JavaScript
85 lines
1.8 KiB
JavaScript
'use strict'
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const crypto = require('crypto')
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const retry = require('async/retry')
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const logger = require('./logger')
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const utils = {
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badRequest,
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cleanForExit,
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generateRandomString,
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isTestInstance,
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getFormatedObjects,
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retryWrapper,
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transactionRetryer
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}
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function badRequest (req, res, next) {
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res.type('json').status(400).end()
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}
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function generateRandomString (size, callback) {
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crypto.pseudoRandomBytes(size, function (err, raw) {
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if (err) return callback(err)
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callback(null, raw.toString('hex'))
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})
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}
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function cleanForExit (webtorrentProcess) {
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logger.info('Gracefully exiting.')
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process.kill(-webtorrentProcess.pid)
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}
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function isTestInstance () {
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return (process.env.NODE_ENV === 'test')
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}
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function getFormatedObjects (objects, objectsTotal) {
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const formatedObjects = []
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objects.forEach(function (object) {
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formatedObjects.push(object.toFormatedJSON())
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})
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return {
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total: objectsTotal,
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data: formatedObjects
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}
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}
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// { arguments, errorMessage }
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function retryWrapper (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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// ---------------------------------------------------------------------------
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module.exports = utils
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