service-core/core/core.mjs

68 lines
2.3 KiB
JavaScript

import Application from './application.mjs'
import Util from './util.mjs'
import { Low } from 'lowdb'
export default class Core {
static providers = new Map()
static addProvider(name, provider) {
if (!name || typeof(name) !== 'string')
throw new Error('addProvider name must be a string')
if (typeof(provider) !== 'function')
throw new Error(`addProvider ${name} provider must be a class`)
let test = new provider({})
if (typeof(test.checkConfig) !== 'function')
throw new Error(`addProvider ${name} provider class missing checkConfig`)
if (typeof(test.getLatestVersion) !== 'function')
throw new Error(`addProvider ${name} provider class missing getLatestVersion`)
Core.providers.set(name, provider)
}
constructor(db, util, log, restart) {
// some sanity checks
if (typeof(restart) !== 'function') throw new Error('restart parameter was not a function')
if (!log || typeof(log) !== 'object') throw new Error('log parameter was invalid')
if (typeof(log.event) !== 'object') throw new Error('log parameter was invalid')
if (typeof(log.info) !== 'function'
|| typeof(log.warn) !== 'function'
|| typeof(log.error) !== 'function'
|| typeof(log.event.info) !== 'function'
|| typeof(log.event.warn) !== 'function'
|| typeof(log.event.error) !== 'function') throw new Error('log parameter was invalid')
if (!util || !(util instanceof Util)) throw new Error('util not instance of Util')
if (!db || !(db instanceof Low)) throw new Error('db not instance of Low')
this.db = db
this.util = util
this.log = log
this.restart = restart
this.applications = []
this.applicationMap = new Map()
}
getApplication(name) {
return this.applicationMap.get(name)
}
async init() {
this.util.verifyConfig(this.db.config)
let names = this.util.getAppNames(this.db.config)
for (let name of names) {
let provConstructor = Core.providers.get(this.db.config[name].provider)
let provider = new provConstructor(this.db.config[name])
await provider.checkConfig(this.db.config[name])
let application = new Application({
db: this.db,
util: this.util,
log: this.log,
core: this,
}, provider, name)
this.applications.push(application)
this.applicationMap.set(name, application)
}
}
}