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1 | 'use strict' | |
2 | ||
3 | const eachSeries = require('async/eachSeries') | |
4 | const mongoose = require('mongoose') | |
5 | const path = require('path') | |
6 | ||
7 | const constants = require('./constants') | |
8 | const logger = require('../helpers/logger') | |
9 | ||
10 | const Application = mongoose.model('Application') | |
11 | ||
12 | const migrator = { | |
13 | migrate: migrate | |
14 | } | |
15 | ||
16 | function migrate (callback) { | |
17 | Application.loadMongoSchemaVersion(function (err, actualVersion) { | |
18 | if (err) return callback(err) | |
19 | ||
20 | // If there are a new mongo schemas | |
21 | if (!actualVersion || actualVersion < constants.LAST_MONGO_SCHEMA_VERSION) { | |
22 | logger.info('Begin migrations.') | |
23 | ||
24 | eachSeries(constants.MONGO_MIGRATION_SCRIPTS, function (entity, callbackEach) { | |
25 | const versionScript = entity.version | |
26 | ||
27 | // Do not execute old migration scripts | |
28 | if (versionScript <= actualVersion) return callbackEach(null) | |
29 | ||
30 | // Load the migration module and run it | |
31 | const migrationScriptName = entity.script | |
32 | logger.info('Executing %s migration script.', migrationScriptName) | |
33 | ||
34 | const migrationScript = require(path.join(__dirname, 'migrations', migrationScriptName)) | |
35 | migrationScript.up(function (err) { | |
36 | if (err) return callbackEach(err) | |
37 | ||
38 | // Update the new mongo version schema | |
39 | Application.updateMongoSchemaVersion(versionScript, callbackEach) | |
40 | }) | |
41 | }, function (err) { | |
42 | if (err) return callback(err) | |
43 | ||
44 | logger.info('Migrations finished. New mongo version schema: %s', constants.LAST_MONGO_SCHEMA_VERSION) | |
45 | return callback(null) | |
46 | }) | |
47 | } else { | |
48 | return callback(null) | |
49 | } | |
50 | }) | |
51 | } | |
52 | ||
53 | // --------------------------------------------------------------------------- | |
54 | ||
55 | module.exports = migrator | |
56 |