Marc
83 lines
2.1 KiB
JavaScript
83 lines
2.1 KiB
JavaScript
//@ts-check
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const fs = require('fs')
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const path = require('path')
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/**
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* @typedef {{ name: string, before: string[], after: string[], init(): undefined | Promise<undefined> }} InitScript
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*/
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async function init() {
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const initdFiles = fs.readdirSync('/etc/init.d/')
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const initdScripts = initdFiles.filter( (v) => v.endsWith('.js'))
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/**
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* @type { Array<String> }
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*/
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const finishedScripts = []
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/**
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* @type { Array<InitScript> }
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*/
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const scripts = []
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for(const script of initdScripts) {
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const scriptCandidate = require(path.join('/etc/init.d/', script))
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if(scriptCandidate?.before && scriptCandidate?.after && scriptCandidate?.init)
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scripts.push({ ...scriptCandidate, name: script})
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else
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console.error(`Invalid(missing exports) script error :${script}`)
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}
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const befores = processBefores(scripts)
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let i = 0
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while(scripts.length) {
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const s = scripts[i % scripts.length]
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i += 1
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if(isSubSet(s.after, finishedScripts) && ( !befores[s.name] || isSubSet(befores[s.name], finishedScripts) )) {
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//on supprime ce service
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scripts.splice(scripts.indexOf(s), 1)
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const result = s.init()
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if(typeof result?.then === 'function') {
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await result
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finishedScripts.push(s.name)
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}
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}
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}
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}
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/**
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* @template T
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* @param {Array<T>} arraya
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* @param {Array<T>} arrayb
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*/
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function isSubSet(arraya, arrayb) {
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for(const a of arraya) {
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if(!arrayb.includes(a)) {
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return false
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}
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}
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return true
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}
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/**
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*
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* @param {Array<InitScript>} scripts
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* @returns {{ [key: string]: string[] }}
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*/
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function processBefores(scripts) {
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/**
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* @type {{ [key: string]: string[] }}
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*/
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const result = {}
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for(const script of scripts) {
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for(const before of script.before){
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if(! result[before]) result[before] = [script.name]
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else result[before].push(script.name)
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}
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}
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return result
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}
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module.exports = init |