bajo
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The ultimate framework for whipping up massive apps in no time
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class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-events"><div>Events</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="global.html#event:bajo:afterAll%257Bmethod%257D">bajo:afterAll{method}</a></div><div class="sidebar-section-children"><a href="global.html#event:bajo:afterBootComplete">bajo:afterBootComplete</a></div><div class="sidebar-section-children"><a href="global.html#event:bajo:afterBuildCollection">bajo:afterBuildCollection</a></div><div class="sidebar-section-children"><a href="global.html#event:bajo:afterCollectHooks">bajo:afterCollectHooks</a></div><div class="sidebar-section-children"><a href="global.html#event:bajo:beforeAll%257Bmethod%257D">bajo:beforeAll{method}</a></div><div class="sidebar-section-children"><a href="global.html#event:bajo:beforeBuildCollection">bajo:beforeBuildCollection</a></div><div class="sidebar-section-children"><a href="global.html#event:%257Bns%257D:afterAppletRun">{ns}:afterAppletRun</a></div><div class="sidebar-section-children"><a href="global.html#event:%257Bns%257D:after%257Bmethod%257D">{ns}:after{method}</a></div><div class="sidebar-section-children"><a href="global.html#event:%257Bns%257D:beforeAppletRun">{ns}:beforeAppletRun</a></div><div class="sidebar-section-children"><a href="global.html#event:%257Bns%257D:before%257Bmethod%257D">{ns}:before{method}</a></div></div><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-modules"><div>Modules</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="module-Helper_Bajo.html">Helper/Bajo</a></div><div class="sidebar-section-children"><a href="module-Helper_Base.html">Helper/Base</a></div><div class="sidebar-section-children"><a href="module-Lib.html">Lib</a></div></div><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-global"><div>Global</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="global.html#TAppConfigHandler">TAppConfigHandler</a></div><div class="sidebar-section-children"><a href="global.html#TAppEnv">TAppEnv</a></div><div class="sidebar-section-children"><a href="global.html#TAppLib">TAppLib</a></div><div class="sidebar-section-children"><a href="global.html#TBajoDataType">TBajoDataType</a></div><div class="sidebar-section-children"><a href="global.html#TBajoFormatResult">TBajoFormatResult</a></div><div class="sidebar-section-children"><a href="global.html#TBajoFormatType">TBajoFormatType</a></div><div class="sidebar-section-children"><a href="global.html#TLogJson">TLogJson</a></div><div class="sidebar-section-children"><a href="global.html#TLogLevels">TLogLevels</a></div><div class="sidebar-section-children"><a href="global.html#TNsPathPairs">TNsPathPairs</a></div><div class="sidebar-section-children"><a href="global.html#TNsPathResult">TNsPathResult</a></div><div class="sidebar-section-children"><a href="global.html#TPrintOptions">TPrintOptions</a></div><div class="sidebar-section-children"><a href="global.html#boot">boot</a></div></div></div></div></div><div class="navbar-container" id="VuAckcnZhf"><nav class="navbar"><div class="navbar-left-items"><div class="navbar-item"><a id="" href="https://www.npmjs.com/package/bajo" target="">NPM</a></div><div class="navbar-item"><a id="" href="https://github.com/ardhi/bajo" target="">Github</a></div><div class="navbar-item"><a id="" href="https://bajo.app" target="">Bajo</a></div></div><div class="navbar-right-items"><div class="navbar-right-item"><button class="icon-button search-button" aria-label="open-search"><svg><use xlink:href="#search-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button theme-toggle" aria-label="toggle-theme"><svg><use class="theme-svg-use" xlink:href="#dark-theme-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button font-size" aria-label="change-font-size"><svg><use xlink:href="#font-size-icon"></use></svg></button></div></div><nav></nav></nav></div><div class="toc-container"><div class="toc-content"><span class="bold">On this page</span><div id="eed4d2a0bfd64539bb9df78095dec881"></div></div></div><div class="body-wrapper"><div class="main-content"><div class="main-wrapper"><section id="source-page" class="source-page"><header><h1 id="title" class="has-anchor">class_helper_bajo.js</h1></header><article><pre class="prettyprint source lang-js"><code>import currentLoc from '../../lib/current-loc.js'
import resolvePath from '../../lib/resolve-path.js'
import Print from '../misc/print.js'
import Log from '../misc/log.js'
import omitDeep from 'omit-deep'
import os from 'os'
import fs from 'fs-extra'
import lodash from 'lodash'
import {
buildConfigs,
checkDependencies,
checkNameAliases,
attachMethods,
collectHooks,
run
} from './base.js'
const {
reduce,
isNaN,
forOwn,
orderBy,
isFunction,
isPlainObject,
map,
pick,
values,
keys,
set,
get,
filter,
trim,
without,
uniq,
camelCase,
isEmpty
} = lodash
const omitted = ['spawn', 'cwd', 'name', 'alias', 'applet', 'a', 'plugins']
const defConfig = {
env: 'dev',
log: {
timeTaken: false,
dateFormat: 'YYYY-MM-DDTHH:MM:ss.SSS[Z]',
localDate: false,
pretty: false,
applet: false,
traceHook: false
},
lang: Intl.DateTimeFormat().resolvedOptions().lang ?? 'en-US',
intl: {
supported: ['en-US', 'id'],
fallback: 'en-US',
lookupOrder: [],
format: {
emptyValue: '',
datetime: { dateStyle: 'medium', timeStyle: 'short' },
date: { dateStyle: 'medium' },
time: { timeStyle: 'short' },
float: { maximumFractionDigits: 2 },
double: { maximumFractionDigits: 5 },
smallint: {},
integer: {}
},
unitSys: {
'en-US': 'imperial',
id: 'metric'
}
},
exitHandler: true
}
const defMain = `async function factory (pkgName) {
const me = this
return class Main extends this.app.pluginClass.base {
constructor () {
super(pkgName, me.app)
this.config = {}
}
}
}
export default factory
`
/**
* Internal helpers called by Bajo that only used once for bootstrapping. It should remains
* hidden and not to be imported by any program.
*
* @module Helper/Bajo
*/
/**
* Building bajo base config. Mostly dealing with directory setups:
* - determine base directory
* - check whether data directory is valid. If not exist, create one inside app dir
* - ensure data config directory is there
* - ensure tmp dir is there
* - read the list of plugins from ```.plugins``` file
*
* @async
*/
export async function buildBaseConfig () {
// dirs
const { defaultsDeep } = this.app.lib.aneka
this.config = defaultsDeep({}, this.app.envVars._, this.app.argv._)
set(this, 'dir.base', this.app.dir)
const path = currentLoc(import.meta).dir + '/../..'
set(this, 'dir.pkg', this.resolvePath(path))
if (!get(this, 'dir.data')) set(this, 'dir.data', `${this.dir.base}/data`)
this.dir.data = this.resolvePath(this.dir.data)
if (!fs.existsSync(this.dir.data)) {
console.log('Data directory (%s) doesn\'t exist yet', this.dir.data)
process.exit(1)
}
fs.ensureDirSync(`${this.dir.data}/config`)
if (!this.dir.tmp) {
this.dir.tmp = `${this.resolvePath(os.tmpdir())}/${this.ns}`
fs.ensureDirSync(this.dir.tmp)
}
// collect list of plugins
let pluginPkgs = []
const pluginsFile = `${this.dir.data}/config/.plugins`
if (fs.existsSync(pluginsFile)) {
pluginPkgs = pluginPkgs.concat(filter(map(trim(fs.readFileSync(pluginsFile, 'utf8')).split('\n'), p => trim(p)), b => !isEmpty(b)))
}
this.app.pluginPkgs = map(filter(without(uniq(pluginPkgs), this.app.mainNs), p => {
return p[0] !== '#'
}), p => {
return trim(p.split('#')[0])
})
this.app.pluginPkgs.push(this.app.mainNs)
}
/**
* Building all plugins:
* - load from app's pluginPkgs
* - iterate through the list and build related plugins
* - making sure main plugin is there. If not, create from template
* - attach these plugins to the app instance
*
* @async
*/
export async function buildPlugins () {
this.log.trace('buildPluginsStart')
for (const pkg of this.app.pluginPkgs) {
const ns = camelCase(pkg)
let dir
if (ns === 'main') {
dir = `${this.dir.base}/${this.app.mainNs}`
fs.ensureDirSync(dir)
if (!fs.existsSync(`${dir}/index.js`)) {
fs.writeFileSync(`${dir}/index.js`, defMain, 'utf8')
}
} else dir = this.getModuleDir(pkg)
const factory = `${dir}/index.js`
if (!fs.existsSync(factory)) throw this.error('pluginPackageNotFound%s', pkg)
const { default: builder } = await import(resolvePath(factory, true))
const ClassDef = await builder.call(this, pkg)
const plugin = new ClassDef()
if (!(plugin instanceof this.app.pluginClass.base)) throw this.error('pluginPackageInvalid%s', pkg)
this.app.addPlugin(plugin, ClassDef)
this.log.trace('- ' + pkg)
}
this.log.debug('buildPluginsComplete')
}
/**
* Collect all config handlers, including the one provided by plugins
*
* @async
*/
export async function collectConfigHandlers () {
for (const pkg of this.app.pluginPkgs) {
let dir
try {
dir = this.getModuleDir(pkg)
} catch (err) {}
if (!dir) continue
const file = `${dir}/extend/bajo/config-handlers.js`
let mod = await this.importModule(file)
if (!mod) continue
if (isFunction(mod)) mod = await mod.call(this.app[camelCase(pkg)])
if (isPlainObject(mod)) mod = [mod]
this.app.configHandlers = this.app.configHandlers.concat(mod)
}
this.app.log = new Log(this.app)
}
/**
* Bajo extra config:
* - reading config file
* - merge config with arguments & environments values
* - Set environment (```dev``` or ```prod```)
*
* @async
*/
export async function buildExtConfig () {
// config merging
const { defaultsDeep } = this.app.lib.aneka
let resp = await this.readAllConfigs(`${this.dir.data}/config/${this.ns}`)
resp = omitDeep(pick(resp, ['log', 'exitHandler', 'env']), omitted)
const envs = this.app.constructor.envs
this.config = defaultsDeep({}, this.config, resp, defConfig)
// language
this.config.lang = (this.config.lang ?? '').split('.')[0]
this.app.loadIntl(this.ns)
this.print = new Print(this)
// environment
if (values(envs).includes(this.config.env)) this.config.env = this.app.lib.aneka.getKeyByValue(envs, this.config.env)
if (!keys(envs).includes(this.config.env)) throw this.error('unknownEnv%s%s', this.config.env, this.join(keys(envs), { lastSeparator: this.t('or') }))
process.env.NODE_ENV = envs[this.config.env]
if (!this.config.log.level) this.config.log.level = this.config.env === 'dev' ? 'debug' : 'info'
// misc
const obj = this.app.applet ? this.config : pick(this.config, keys(defConfig))
this.config = this.parseObject(obj, { parseValue: true })
const exts = this.app.getConfigFormats()
if (this.app.applet) {
if (!this.app.pluginPkgs.includes('bajo-cli')) throw this.error('appletNeedsBajoCli')
if (!this.config.log.applet) this.config.log.level = 'silent'
this.config.exitHandler = false
}
this.log.debug('configHandlers%s', this.join(exts))
}
/**
* Setup plugins boot orders by reading plugin's ```.bootorder``` file if provided.
*
* @async
*/
export async function bootOrder () {
this.log.debug('setupBootOrder')
const order = reduce(this.app.pluginPkgs, (o, k, i) => {
const key = map(k.split(':'), m => trim(m))
if (key[1] && !isNaN(Number(key[1]))) o[key[0]] = Number(key[1])
else o[key[0]] = 10000 + i
return o
}, {})
const norder = {}
for (let n of this.app.pluginPkgs) {
n = map(n.split(':'), m => trim(m))[0]
const dir = n === this.app.mainNs ? (`${this.dir.base}/${this.app.mainNs}`) : this.getModuleDir(n)
if (n !== this.app.mainNs && !fs.existsSync(dir)) throw this.error('packageNotFoundOrNotBajo%s', n)
norder[n] = NaN
try {
norder[n] = Number(trim(await fs.readFile(`${dir}/.bootorder`, 'utf8')))
} catch (err) {}
}
const result = []
forOwn(order, (v, k) => {
const item = { k, v: isNaN(norder[k]) ? v : norder[k] }
result.push(item)
})
this.app.pluginPkgs = map(orderBy(result, ['v']), 'k')
this.log.debug('runInEnv%s', this.t(this.app.constructor.envs[this.config.env]))
// misc
this.freeze(this.config)
}
/**
* Iterate through all plugins loaded and do:
*
* 1. {@link module:Helper/Base.buildConfigs|build configs}
* 2. {@link module:Helper/Base.checkNameAliases|ensure names & aliases uniqueness}
* 3. {@link module:Helper/Base.checkDependencies|ensure dependencies are met}
* 4. {@link module:Helper/Base.attachMethods|build and attach dynamic methods}
* 5. {@link module:Helper/Base.collectHooks|collect hooks}
* 6. {@link module:Helper/Base.run|run plugins}
*
* @async
*/
export async function bootPlugins () {
await buildConfigs.call(this.app)
await checkNameAliases.call(this.app)
await checkDependencies.call(this.app)
await attachMethods.call(this.app)
await collectHooks.call(this.app)
await run.call(this.app)
}
/**
* Attach plugins exit handlers and make sure the app shutdowns gracefully
*
* @async
*/
export async function exitHandler () {
if (!this.config.exitHandler) return
async function exit (signal) {
const { eachPlugins } = this
if (signal) this.log.warn('signalReceived%s', signal)
await eachPlugins(async function ({ ns }) {
try {
await this.exit()
} catch (err) {}
this.log.trace('exited')
})
this.log.debug('appShutdown')
process.exit(0)
}
process.on('SIGINT', async () => {
await exit.call(this, 'SIGINT')
})
process.on('SIGTERM', async () => {
await exit.call(this, 'SIGTERM')
})
process.on('beforeExit', async () => {
await exit.call(this)
})
process.on('uncaughtException', (error, origin) => {
setTimeout(() => {
console.error(error)
// process.exit(1)
}, 50)
})
process.on('unhandledRejection', (reason, promise) => {
const stackFile = reason.stack.split('\n')[1]
let file
const info = stackFile.match(/\((.*)\)/) // file is in (<file>)
if (info) file = info[1]
else if (stackFile.startsWith(' at ')) file = stackFile.slice(7) // file is stackFile itself
if (!file) return
const parts = file.split(':')
const column = parseInt(parts[parts.length - 1])
const line = parseInt(parts[parts.length - 2])
parts.pop()
parts.pop()
file = parts.join(':')
this.log.error({ file, line, column }, '%s', reason.message)
})
process.on('warning', warning => {
this.log.error('%s', warning.message)
})
}
/**
* If app is in ```applet``` mode, this little helper should take care plugin's applet boot process
*
* @async
* @fires {ns}:beforeAppletRun
* @fires {ns}:afterAppletRun
*/
export async function runAsApplet () {
const { isString, map, find } = this.app.lib._
await this.eachPlugins(async function ({ file }) {
const { ns } = this
const { alias } = this.constructor
this.app.applets.push({ ns, file, alias })
}, { glob: 'applet.js', prefix: 'bajoCli' })
this.log.debug('appletModeActivated')
this.print.info('appRunningAsApplet')
if (this.app.applets.length === 0) this.print.fatal('noAppletLoaded')
let name = this.app.applet
if (!isString(name)) {
const select = await this.importPkg('bajoCli:@inquirer/select')
name = await select({
message: this.t('Please select:'),
choices: map(this.app.applets, t => ({ value: t.ns }))
})
}
const [ns, path] = name.split(':')
const applet = find(this.app.applets, a => (a.ns === ns || a.alias === ns))
if (!applet) this.print.fatal('notFound%s%s', this.app.t('applet'), name)
/**
* Run before applet is run. ```[ns]``` is applet's namespace
*
* @global
* @event {ns}:beforeAppletRun
* @param {...any} params
* @see {@tutorial hook}
* @see module:Helper/Bajo.runAsApplet
*/
await this.runHook(`${this.app[applet.ns]}:beforeAppletRun`, ...this.app.args)
await this.app.bajoCli.runApplet(applet, path, ...this.app.args)
/**
* Run after applet is run. ```[ns]``` is applet's namespace
*
* @global
* @event {ns}:afterAppletRun
* @param {...any} params
* @see {@tutorial hook}
* @see module:Helper/Bajo.runAsApplet
*/
await this.runHook(`${this.app[applet.ns]}:afterAppletRun`, ...this.app.args)
}
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