+// ---------------------------------------------------------------------------
+
+function getMigrationScripts (callback) {
+ fs.readdir(path.join(__dirname, 'migrations'), function (err, files) {
+ if (err) return callback(err)
+
+ const filesToMigrate = []
+
+ files.forEach(function (file) {
+ // Filename is something like 'version-blabla.js'
+ const version = file.split('-')[0]
+ filesToMigrate.push({
+ version,
+ script: file
+ })
+ })
+
+ return callback(err, filesToMigrate)
+ })
+}
+
+function executeMigration (actualVersion, entity, callback) {
+ const versionScript = parseInt(entity.version)
+
+ // Do not execute old migration scripts
+ if (versionScript <= actualVersion) return callback(null)
+
+ // Load the migration module and run it
+ const migrationScriptName = entity.script
+ logger.info('Executing %s migration script.', migrationScriptName)
+
+ const migrationScript = require(path.join(__dirname, 'migrations', migrationScriptName))
+
+ db.sequelize.transaction().asCallback(function (err, t) {
+ if (err) return callback(err)
+
+ const options = {
+ transaction: t,
+ queryInterface: db.sequelize.getQueryInterface(),
+ sequelize: db.sequelize,
+ Sequelize: db.Sequelize
+ }
+ migrationScript.up(options, function (err) {
+ if (err) {
+ t.rollback()
+ return callback(err)
+ }
+
+ // Update the new migration version
+ db.Application.updateMigrationVersion(versionScript, t, function (err) {
+ if (err) {
+ t.rollback()
+ return callback(err)
+ }
+
+ t.commit().asCallback(callback)
+ })
+ })
+ })
+}