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238 lines
6.5 KiB
238 lines
6.5 KiB
const _ = require('lodash')
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const autoload = require('auto-load')
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const path = require('path')
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const Promise = require('bluebird')
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const Knex = require('knex')
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const fs = require('fs')
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const Objection = require('objection')
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const migrationSource = require('../db/migrator-source')
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const migrateFromBeta = require('../db/beta')
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/* global WIKI */
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/**
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* ORM DB module
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*/
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module.exports = {
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Objection,
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knex: null,
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listener: null,
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/**
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* Initialize DB
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*
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* @return {Object} DB instance
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*/
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init() {
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let self = this
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let dbClient = null
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let dbConfig = (!_.isEmpty(process.env.DATABASE_URL)) ? process.env.DATABASE_URL : {
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host: WIKI.config.db.host.toString(),
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user: WIKI.config.db.user.toString(),
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password: WIKI.config.db.pass.toString(),
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database: WIKI.config.db.db.toString(),
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port: WIKI.config.db.port
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}
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const dbUseSSL = (WIKI.config.db.ssl === true || WIKI.config.db.ssl === 'true' || WIKI.config.db.ssl === 1 || WIKI.config.db.ssl === '1')
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let sslOptions = null
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if (dbUseSSL && _.isPlainObject(dbConfig) && _.get(dbConfig, 'sslOptions.auto', null) === false) {
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sslOptions = dbConfig.sslOptions
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if (sslOptions.ca) {
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sslOptions.ca = fs.readFileSync(path.resolve(WIKI.ROOTPATH, sslOptions.ca))
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}
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if (sslOptions.cert) {
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sslOptions.cert = fs.readFileSync(path.resolve(WIKI.ROOTPATH, sslOptions.cert))
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}
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if (sslOptions.key) {
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sslOptions.key = fs.readFileSync(path.resolve(WIKI.ROOTPATH, sslOptions.key))
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}
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if (sslOptions.pfx) {
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sslOptions.pfx = fs.readFileSync(path.resolve(WIKI.ROOTPATH, sslOptions.pfx))
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}
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} else {
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sslOptions = true
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}
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switch (WIKI.config.db.type) {
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case 'postgres':
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dbClient = 'pg'
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if (dbUseSSL && _.isPlainObject(dbConfig)) {
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dbConfig.ssl = sslOptions
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}
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break
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case 'mariadb':
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case 'mysql':
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dbClient = 'mysql2'
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if (dbUseSSL && _.isPlainObject(dbConfig)) {
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dbConfig.ssl = sslOptions
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}
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// Fix mysql boolean handling...
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dbConfig.typeCast = (field, next) => {
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if (field.type === 'TINY' && field.length === 1) {
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let value = field.string()
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return value ? (value === '1') : null
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}
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return next()
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}
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break
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case 'mssql':
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dbClient = 'mssql'
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if (_.isPlainObject(dbConfig)) {
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dbConfig.appName = 'Wiki.js'
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if (dbUseSSL) {
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dbConfig.encrypt = true
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}
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}
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break
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case 'sqlite':
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dbClient = 'sqlite3'
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dbConfig = { filename: WIKI.config.db.storage }
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break
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default:
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WIKI.logger.error('Invalid DB Type')
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process.exit(1)
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}
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this.knex = Knex({
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client: dbClient,
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useNullAsDefault: true,
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asyncStackTraces: WIKI.IS_DEBUG,
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connection: dbConfig,
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pool: {
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...WIKI.config.pool,
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propagateCreateError: false,
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async afterCreate(conn, done) {
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// -> Set Connection App Name
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switch (WIKI.config.db.type) {
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case 'postgres':
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await conn.query(`set application_name = 'Wiki.js'`)
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done()
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break
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default:
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done()
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break
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}
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}
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},
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debug: WIKI.IS_DEBUG
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})
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Objection.Model.knex(this.knex)
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// Load DB Models
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const models = autoload(path.join(WIKI.SERVERPATH, 'models'))
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// Set init tasks
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let conAttempts = 0
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let initTasks = {
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// -> Attempt initial connection
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async connect () {
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try {
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WIKI.logger.info('Connecting to database...')
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await self.knex.raw('SELECT 1 + 1;')
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WIKI.logger.info('Database Connection Successful [ OK ]')
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} catch (err) {
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if (conAttempts < 10) {
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if (err.code) {
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WIKI.logger.error(`Database Connection Error: ${err.code} ${err.address}:${err.port}`)
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} else {
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WIKI.logger.error(`Database Connection Error: ${err.message}`)
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}
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WIKI.logger.warn(`Will retry in 3 seconds... [Attempt ${++conAttempts} of 10]`)
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await new Promise(resolve => setTimeout(resolve, 3000))
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await initTasks.connect()
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} else {
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throw err
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}
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}
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},
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// -> Migrate DB Schemas
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async syncSchemas () {
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return self.knex.migrate.latest({
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tableName: 'migrations',
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migrationSource
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})
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},
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// -> Migrate DB Schemas from beta
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async migrateFromBeta () {
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return migrateFromBeta.migrate(self.knex)
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}
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}
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let initTasksQueue = (WIKI.IS_MASTER) ? [
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initTasks.connect,
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initTasks.migrateFromBeta,
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initTasks.syncSchemas
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] : [
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() => { return Promise.resolve() }
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]
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// Perform init tasks
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WIKI.logger.info(`Using database driver ${dbClient} for ${WIKI.config.db.type} [ OK ]`)
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this.onReady = Promise.each(initTasksQueue, t => t()).return(true)
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return {
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...this,
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...models
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}
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},
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/**
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* Subscribe to database LISTEN / NOTIFY for multi-instances events
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*/
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async subscribeToNotifications () {
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const useHA = (WIKI.config.ha === true || WIKI.config.ha === 'true' || WIKI.config.ha === 1 || WIKI.config.ha === '1')
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if (!useHA) {
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return
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} else if (WIKI.config.db.type !== 'postgres') {
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WIKI.logger.warn(`Database engine doesn't support pub/sub. Will not handle concurrent instances: [ DISABLED ]`)
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return
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}
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const PGPubSub = require('pg-pubsub')
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this.listener = new PGPubSub(this.knex.client.connectionSettings, {
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log (ev) {
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WIKI.logger.debug(ev)
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}
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})
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this.listener.addChannel('wiki', payload => {
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if (_.has(payload.event) && payload.source !== WIKI.INSTANCE_ID) {
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WIKI.events.emit(payload.event, payload.value)
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}
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})
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WIKI.events.onAny(this.notifyViaDB)
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WIKI.logger.info(`High-Availability Listener initialized successfully: [ OK ]`)
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},
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/**
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* Unsubscribe from database LISTEN / NOTIFY
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*/
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async unsubscribeToNotifications () {
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if (this.listener) {
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WIKI.events.offAny(this.notifyViaDB)
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this.listener.close()
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}
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},
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/**
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* Publish event via database NOTIFY
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*
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* @param {string} event Event fired
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* @param {object} value Payload of the event
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*/
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notifyViaDB (event, value) {
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this.listener.publish('wiki', {
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source: WIKI.INSTANCE_ID,
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event,
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value
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})
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}
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}
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