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65fcc311 | 1 | import { waterfall, eachSeries } from 'async' |
4d4e5cd4 C |
2 | import * as fs from 'fs' |
3 | import * as path from 'path' | |
e02643f3 | 4 | import * as Sequelize from 'sequelize' |
00d6b0dd | 5 | |
e02643f3 | 6 | import { database as db } from './database' |
65fcc311 C |
7 | import { LAST_MIGRATION_VERSION } from './constants' |
8 | import { logger } from '../helpers' | |
00d6b0dd | 9 | |
69818c93 | 10 | function migrate (finalCallback: (err: Error) => void) { |
5804c0db C |
11 | waterfall([ |
12 | ||
13 | function checkApplicationTableExists (callback) { | |
14 | db.sequelize.getQueryInterface().showAllTables().asCallback(function (err, tables) { | |
15 | if (err) return callback(err) | |
16 | ||
17 | // No tables, we don't need to migrate anything | |
18 | // The installer will do that | |
19 | if (tables.length === 0) return finalCallback(null) | |
20 | ||
21 | return callback(null) | |
22 | }) | |
23 | }, | |
24 | ||
25 | function loadMigrationVersion (callback) { | |
26 | db.Application.loadMigrationVersion(callback) | |
27 | }, | |
00d6b0dd | 28 | |
ed708d62 C |
29 | function createMigrationRowIfNotExists (actualVersion, callback) { |
30 | if (actualVersion === null) { | |
31 | db.Application.create({ | |
32 | migrationVersion: 0 | |
33 | }, function (err) { | |
1f5bf9ef | 34 | return callback(err, 0) |
ed708d62 C |
35 | }) |
36 | } | |
37 | ||
38 | return callback(null, actualVersion) | |
39 | }, | |
40 | ||
5804c0db C |
41 | function abortMigrationIfNotNeeded (actualVersion, callback) { |
42 | // No need migrations | |
65fcc311 | 43 | if (actualVersion >= LAST_MIGRATION_VERSION) return finalCallback(null) |
5804c0db C |
44 | |
45 | return callback(null, actualVersion) | |
46 | }, | |
47 | ||
48 | function getMigrations (actualVersion, callback) { | |
49 | // If there are a new migration scripts | |
00d6b0dd C |
50 | logger.info('Begin migrations.') |
51 | ||
b769007f | 52 | getMigrationScripts(function (err, migrationScripts) { |
5804c0db C |
53 | return callback(err, actualVersion, migrationScripts) |
54 | }) | |
55 | }, | |
00d6b0dd | 56 | |
5804c0db | 57 | function doMigrations (actualVersion, migrationScripts, callback) { |
69818c93 | 58 | eachSeries(migrationScripts, function (entity: any, callbackEach) { |
5804c0db C |
59 | executeMigration(actualVersion, entity, callbackEach) |
60 | }, function (err) { | |
61 | if (err) return callback(err) | |
00d6b0dd | 62 | |
65fcc311 | 63 | logger.info('Migrations finished. New migration version schema: %s', LAST_MIGRATION_VERSION) |
5804c0db | 64 | return callback(null) |
00d6b0dd | 65 | }) |
00d6b0dd | 66 | } |
5804c0db | 67 | ], finalCallback) |
00d6b0dd C |
68 | } |
69 | ||
70 | // --------------------------------------------------------------------------- | |
71 | ||
65fcc311 C |
72 | export { |
73 | migrate | |
74 | } | |
00d6b0dd | 75 | |
b769007f C |
76 | // --------------------------------------------------------------------------- |
77 | ||
69818c93 C |
78 | type GetMigrationScriptsCallback = (err: Error, filesToMigrate?: { version: string, script: string }[]) => void |
79 | function getMigrationScripts (callback: GetMigrationScriptsCallback) { | |
b769007f C |
80 | fs.readdir(path.join(__dirname, 'migrations'), function (err, files) { |
81 | if (err) return callback(err) | |
82 | ||
83 | const filesToMigrate = [] | |
84 | ||
85 | files.forEach(function (file) { | |
86 | // Filename is something like 'version-blabla.js' | |
87 | const version = file.split('-')[0] | |
88 | filesToMigrate.push({ | |
89 | version, | |
90 | script: file | |
91 | }) | |
92 | }) | |
93 | ||
94 | return callback(err, filesToMigrate) | |
95 | }) | |
96 | } | |
97 | ||
69818c93 | 98 | function executeMigration (actualVersion: number, entity: { version: string, script: string }, callback: (err: Error) => void) { |
e02643f3 | 99 | const versionScript = parseInt(entity.version, 10) |
b769007f C |
100 | |
101 | // Do not execute old migration scripts | |
102 | if (versionScript <= actualVersion) return callback(null) | |
103 | ||
104 | // Load the migration module and run it | |
105 | const migrationScriptName = entity.script | |
106 | logger.info('Executing %s migration script.', migrationScriptName) | |
107 | ||
108 | const migrationScript = require(path.join(__dirname, 'migrations', migrationScriptName)) | |
109 | ||
110 | db.sequelize.transaction().asCallback(function (err, t) { | |
111 | if (err) return callback(err) | |
112 | ||
4793c343 C |
113 | const options = { |
114 | transaction: t, | |
115 | queryInterface: db.sequelize.getQueryInterface(), | |
5804c0db | 116 | sequelize: db.sequelize, |
e02643f3 | 117 | Sequelize: Sequelize |
4793c343 C |
118 | } |
119 | migrationScript.up(options, function (err) { | |
b769007f C |
120 | if (err) { |
121 | t.rollback() | |
122 | return callback(err) | |
123 | } | |
124 | ||
125 | // Update the new migration version | |
126 | db.Application.updateMigrationVersion(versionScript, t, function (err) { | |
127 | if (err) { | |
128 | t.rollback() | |
129 | return callback(err) | |
130 | } | |
131 | ||
dea32aac | 132 | t.commit().asCallback(callback) |
b769007f C |
133 | }) |
134 | }) | |
135 | }) | |
136 | } |