99 lines
2.9 KiB
TypeScript
99 lines
2.9 KiB
TypeScript
import * as path from 'path'
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import { readdirPromise } from '../helpers/core-utils'
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import { logger } from '../helpers/logger'
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import { LAST_MIGRATION_VERSION } from './constants'
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import { sequelizeTypescript } from './database'
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async function migrate () {
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const tables = await sequelizeTypescript.getQueryInterface().showAllTables()
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// No tables, we don't need to migrate anything
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// The installer will do that
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if (tables.length === 0) return
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let actualVersion: number = null
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const [ rows ] = await sequelizeTypescript.query('SELECT "migrationVersion" FROM "application"')
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if (rows && rows[0] && rows[0].migrationVersion) {
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actualVersion = rows[0].migrationVersion
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}
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if (actualVersion === null) {
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await sequelizeTypescript.query('INSERT INTO "application" ("migrationVersion") VALUES (0)')
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actualVersion = 0
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}
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// No need migrations, abort
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if (actualVersion >= LAST_MIGRATION_VERSION) return
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// If there are a new migration scripts
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logger.info('Begin migrations.')
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const migrationScripts = await getMigrationScripts()
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for (const migrationScript of migrationScripts) {
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try {
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await executeMigration(actualVersion, migrationScript)
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} catch (err) {
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logger.error('Cannot execute migration %s.', migrationScript.version, err)
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process.exit(-1)
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}
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}
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logger.info('Migrations finished. New migration version schema: %s', LAST_MIGRATION_VERSION)
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}
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// ---------------------------------------------------------------------------
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export {
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migrate
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}
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// ---------------------------------------------------------------------------
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async function getMigrationScripts () {
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const files = await readdirPromise(path.join(__dirname, 'migrations'))
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const filesToMigrate: {
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version: string,
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script: string
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}[] = []
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files
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.filter(file => file.endsWith('.js.map') === false)
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.forEach(file => {
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// Filename is something like 'version-blabla.js'
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const version = file.split('-')[0]
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filesToMigrate.push({
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version,
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script: file
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})
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})
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return filesToMigrate
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}
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async function executeMigration (actualVersion: number, entity: { version: string, script: string }) {
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const versionScript = parseInt(entity.version, 10)
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// Do not execute old migration scripts
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if (versionScript <= actualVersion) return undefined
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// Load the migration module and run it
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const migrationScriptName = entity.script
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logger.info('Executing %s migration script.', migrationScriptName)
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const migrationScript = require(path.join(__dirname, 'migrations', migrationScriptName))
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return sequelizeTypescript.transaction(async t => {
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const options = {
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transaction: t,
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queryInterface: sequelizeTypescript.getQueryInterface(),
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sequelize: sequelizeTypescript
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}
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await migrationScript.up(options)
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// Update the new migration version
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await sequelizeTypescript.query('UPDATE "application" SET "migrationVersion" = ' + versionScript, { transaction: t })
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})
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}
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