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import envPaths from 'env-paths'
import { ensureDir, pathExists, readFile, remove, writeFile } from 'fs-extra'
import { merge } from 'lodash'
import { logger } from 'packages/peertube-runner/shared/logger'
import { dirname, join } from 'path'
import { parse, stringify } from '@iarna/toml'
const paths = envPaths('peertube-runner')
type Config = {
jobs: {
concurrency: number
}
ffmpeg: {
threads: number
nice: number
}
registeredInstances: {
url: string
runnerToken: string
runnerName: string
runnerDescription?: string
}[]
}
export class ConfigManager {
private static instance: ConfigManager
private config: Config = {
jobs: {
concurrency: 2
},
ffmpeg: {
threads: 2,
nice: 20
},
registeredInstances: []
}
private id: string
private configFilePath: string
private constructor () {}
init (id: string) {
this.id = id
this.configFilePath = join(this.getConfigDir(), 'config.toml')
}
async load () {
logger.info(`Using ${this.configFilePath} as configuration file`)
if (this.isTestInstance()) {
logger.info('Removing configuration file as we are using the "test" id')
await remove(this.configFilePath)
}
await ensureDir(dirname(this.configFilePath))
if (!await pathExists(this.configFilePath)) {
await this.save()
}
const file = await readFile(this.configFilePath, 'utf-8')
this.config = merge(this.config, parse(file))
}
save () {
return writeFile(this.configFilePath, stringify(this.config))
}
// ---------------------------------------------------------------------------
async setRegisteredInstances (registeredInstances: {
url: string
runnerToken: string
runnerName: string
runnerDescription?: string
}[]) {
this.config.registeredInstances = registeredInstances
await this.save()
}
// ---------------------------------------------------------------------------
getConfig () {
return this.deepFreeze(this.config)
}
// ---------------------------------------------------------------------------
getTranscodingDirectory () {
return join(paths.cache, this.id, 'transcoding')
}
getSocketDirectory () {
return join(paths.data, this.id)
}
getSocketPath () {
return join(this.getSocketDirectory(), 'peertube-runner.sock')
}
getConfigDir () {
return join(paths.config, this.id)
}
// ---------------------------------------------------------------------------
isTestInstance () {
return typeof this.id === 'string' && this.id.match(/^test-\d$/)
}
// ---------------------------------------------------------------------------
// Thanks: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze
private deepFreeze <T extends object> (object: T) {
const propNames = Reflect.ownKeys(object)
// Freeze properties before freezing self
for (const name of propNames) {
const value = object[name]
if ((value && typeof value === 'object') || typeof value === 'function') {
this.deepFreeze(value)
}
}
return Object.freeze({ ...object })
}
static get Instance () {
return this.instance || (this.instance = new this())
}
}
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