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1 | import * as Sequelize from 'sequelize' | |
2 | // TODO: import from ES6 when retry typing file will include errorFilter function | |
3 | import * as retry from 'async/retry' | |
4 | ||
5 | import { database as db } from '../initializers/database' | |
6 | import { logger } from './logger' | |
7 | ||
8 | function commitTransaction (t: Sequelize.Transaction, callback: (err: Error) => void) { | |
9 | return t.commit().asCallback(callback) | |
10 | } | |
11 | ||
12 | function rollbackTransaction (err: Error, t: Sequelize.Transaction, callback: (err: Error) => void) { | |
13 | // Try to rollback transaction | |
14 | if (t) { | |
15 | // Do not catch err, report the original one | |
16 | t.rollback().asCallback(function () { | |
17 | return callback(err) | |
18 | }) | |
19 | } else { | |
20 | return callback(err) | |
21 | } | |
22 | } | |
23 | ||
24 | type RetryTransactionWrapperOptions = { errorMessage: string, arguments?: any[] } | |
25 | function retryTransactionWrapper (functionToRetry: Function, options: RetryTransactionWrapperOptions, finalCallback: Function) { | |
26 | const args = options.arguments ? options.arguments : [] | |
27 | ||
28 | transactionRetryer( | |
29 | function (callback) { | |
30 | return functionToRetry.apply(this, args.concat([ callback ])) | |
31 | }, | |
32 | function (err) { | |
33 | if (err) { | |
34 | logger.error(options.errorMessage, { error: err }) | |
35 | } | |
36 | ||
37 | // Do not return the error, continue the process | |
38 | return finalCallback(null) | |
39 | } | |
40 | ) | |
41 | } | |
42 | ||
43 | function transactionRetryer (func: Function, callback: (err: Error) => void) { | |
44 | retry({ | |
45 | times: 5, | |
46 | ||
47 | errorFilter: function (err) { | |
48 | const willRetry = (err.name === 'SequelizeDatabaseError') | |
49 | logger.debug('Maybe retrying the transaction function.', { willRetry }) | |
50 | return willRetry | |
51 | } | |
52 | }, func, callback) | |
53 | } | |
54 | ||
55 | function startSerializableTransaction (callback: (err: Error, t: Sequelize.Transaction) => void) { | |
56 | db.sequelize.transaction(/* { isolationLevel: 'SERIALIZABLE' } */).asCallback(function (err, t) { | |
57 | // We force to return only two parameters | |
58 | return callback(err, t) | |
59 | }) | |
60 | } | |
61 | ||
62 | // --------------------------------------------------------------------------- | |
63 | ||
64 | export { | |
65 | commitTransaction, | |
66 | retryTransactionWrapper, | |
67 | rollbackTransaction, | |
68 | startSerializableTransaction, | |
69 | transactionRetryer | |
70 | } |