wikijs-fork/server/core/db.js

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const _ = require('lodash')
const autoload = require('auto-load')
const path = require('path')
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const Promise = require('bluebird')
const Knex = require('knex')
const Objection = require('objection')
/* global WIKI */
/**
* PostgreSQL DB module
*/
module.exports = {
Objection,
knex: null,
/**
* Initialize DB
*
* @return {Object} DB instance
*/
init() {
let self = this
let dbClient = null
const dbConfig = (!_.isEmpty(process.env.WIKI_DB_CONNSTR)) ? process.env.WIKI_DB_CONNSTR : {
host: WIKI.config.db.host,
user: WIKI.config.db.user,
password: WIKI.config.db.pass,
database: WIKI.config.db.db,
port: WIKI.config.db.port,
filename: WIKI.config.db.storage
}
switch (WIKI.config.db.type) {
case 'postgres':
dbClient = 'pg'
break
case 'mysql':
dbClient = 'mysql2'
break
case 'mssql':
dbClient = 'mssql'
break
case 'sqlite':
dbClient = 'sqlite3'
break
default:
WIKI.logger.error('Invalid DB Type')
process.exit(1)
}
this.knex = Knex({
client: dbClient,
useNullAsDefault: true,
connection: dbConfig,
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pool: {
async afterCreate(conn, done) {
// -> Set Connection App Name
switch (WIKI.config.db.type) {
case 'postgres':
await conn.query(`set application_name = 'Wiki.js'`)
done()
break
default:
done()
break
}
}
},
debug: WIKI.IS_DEBUG
})
Objection.Model.knex(this.knex)
// Load DB Models
const models = autoload(path.join(WIKI.SERVERPATH, 'models'))
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// Set init tasks
let initTasks = {
// -> Migrate DB Schemas
async syncSchemas() {
return self.knex.migrate.latest({
directory: path.join(WIKI.SERVERPATH, 'db/migrations'),
tableName: 'migrations'
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})
}
}
let initTasksQueue = (WIKI.IS_MASTER) ? [
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initTasks.syncSchemas
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] : [
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() => { return Promise.resolve() }
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]
// Perform init tasks
this.onReady = Promise.each(initTasksQueue, t => t()).return(true)
return {
...this,
...models
}
}
}