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1 | import * as path from 'path' | |
2 | import { readdirPromise } from '../helpers/core-utils' | |
3 | import { logger } from '../helpers/logger' | |
4 | import { LAST_MIGRATION_VERSION } from './constants' | |
5 | import { sequelizeTypescript } from './database' | |
6 | ||
7 | async function migrate () { | |
8 | const tables = await sequelizeTypescript.getQueryInterface().showAllTables() | |
9 | ||
10 | // No tables, we don't need to migrate anything | |
11 | // The installer will do that | |
12 | if (tables.length === 0) return | |
13 | ||
14 | let actualVersion: number = null | |
15 | ||
16 | const [ rows ] = await sequelizeTypescript.query('SELECT "migrationVersion" FROM "application"') | |
17 | if (rows && rows[0] && rows[0].migrationVersion) { | |
18 | actualVersion = rows[0].migrationVersion | |
19 | } | |
20 | ||
21 | if (actualVersion === null) { | |
22 | await sequelizeTypescript.query('INSERT INTO "application" ("migrationVersion") VALUES (0)') | |
23 | actualVersion = 0 | |
24 | } | |
25 | ||
26 | // No need migrations, abort | |
27 | if (actualVersion >= LAST_MIGRATION_VERSION) return | |
28 | ||
29 | // If there are a new migration scripts | |
30 | logger.info('Begin migrations.') | |
31 | ||
32 | const migrationScripts = await getMigrationScripts() | |
33 | ||
34 | for (const migrationScript of migrationScripts) { | |
35 | try { | |
36 | await executeMigration(actualVersion, migrationScript) | |
37 | } catch (err) { | |
38 | logger.error('Cannot execute migration %s.', migrationScript.version, { err }) | |
39 | process.exit(-1) | |
40 | } | |
41 | } | |
42 | ||
43 | logger.info('Migrations finished. New migration version schema: %s', LAST_MIGRATION_VERSION) | |
44 | } | |
45 | ||
46 | // --------------------------------------------------------------------------- | |
47 | ||
48 | export { | |
49 | migrate | |
50 | } | |
51 | ||
52 | // --------------------------------------------------------------------------- | |
53 | ||
54 | async function getMigrationScripts () { | |
55 | const files = await readdirPromise(path.join(__dirname, 'migrations')) | |
56 | const filesToMigrate: { | |
57 | version: string, | |
58 | script: string | |
59 | }[] = [] | |
60 | ||
61 | files | |
62 | .filter(file => file.endsWith('.js.map') === false) | |
63 | .forEach(file => { | |
64 | // Filename is something like 'version-blabla.js' | |
65 | const version = file.split('-')[0] | |
66 | filesToMigrate.push({ | |
67 | version, | |
68 | script: file | |
69 | }) | |
70 | }) | |
71 | ||
72 | return filesToMigrate | |
73 | } | |
74 | ||
75 | async function executeMigration (actualVersion: number, entity: { version: string, script: string }) { | |
76 | const versionScript = parseInt(entity.version, 10) | |
77 | ||
78 | // Do not execute old migration scripts | |
79 | if (versionScript <= actualVersion) return undefined | |
80 | ||
81 | // Load the migration module and run it | |
82 | const migrationScriptName = entity.script | |
83 | logger.info('Executing %s migration script.', migrationScriptName) | |
84 | ||
85 | const migrationScript = require(path.join(__dirname, 'migrations', migrationScriptName)) | |
86 | ||
87 | return sequelizeTypescript.transaction(async t => { | |
88 | const options = { | |
89 | transaction: t, | |
90 | queryInterface: sequelizeTypescript.getQueryInterface(), | |
91 | sequelize: sequelizeTypescript | |
92 | } | |
93 | ||
94 | await migrationScript.up(options) | |
95 | ||
96 | // Update the new migration version | |
97 | await sequelizeTypescript.query('UPDATE "application" SET "migrationVersion" = ' + versionScript, { transaction: t }) | |
98 | }) | |
99 | } |