PeerTube/server/helpers/logger.ts

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// Thanks http://tostring.it/2014/06/23/advanced-logging-with-nodejs/
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import { stat } from 'fs-extra'
import { omit } from 'lodash'
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import { join } from 'path'
import { format as sqlFormat } from 'sql-formatter'
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import { createLogger, format, transports } from 'winston'
import { FileTransportOptions } from 'winston/lib/winston/transports'
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import { CONFIG } from '../initializers/config'
import { LOG_FILENAME } from '../initializers/constants'
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const label = CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT
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function getLoggerReplacer () {
const seen = new WeakSet()
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// Thanks: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Cyclic_object_value#Examples
return (key: string, value: any) => {
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if (key === 'cert') return 'Replaced by the logger to avoid large log message'
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if (typeof value === 'object' && value !== null) {
if (seen.has(value)) return
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seen.add(value)
}
if (value instanceof Set) {
return Array.from(value)
}
if (value instanceof Map) {
return Array.from(value.entries())
}
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if (value instanceof Error) {
const error = {}
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Object.getOwnPropertyNames(value).forEach(key => { error[key] = value[key] })
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return error
}
return value
}
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}
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const consoleLoggerFormat = format.printf(info => {
const toOmit = [ 'label', 'timestamp', 'level', 'message', 'sql', 'tags' ]
const obj = omit(info, ...toOmit)
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let additionalInfos = JSON.stringify(obj, getLoggerReplacer(), 2)
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if (additionalInfos === undefined || additionalInfos === '{}') additionalInfos = ''
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else additionalInfos = ' ' + additionalInfos
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if (info.sql) {
if (CONFIG.LOG.PRETTIFY_SQL) {
additionalInfos += '\n' + sqlFormat(info.sql, {
language: 'sql',
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indent: ' '
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})
} else {
additionalInfos += ' - ' + info.sql
}
}
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return `[${info.label}] ${info.timestamp} ${info.level}: ${info.message}${additionalInfos}`
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})
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const jsonLoggerFormat = format.printf(info => {
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return JSON.stringify(info, getLoggerReplacer())
})
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const timestampFormatter = format.timestamp({
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format: 'YYYY-MM-DD HH:mm:ss.SSS'
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})
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const labelFormatter = (suffix?: string) => {
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return format.label({
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label: suffix ? `${label} ${suffix}` : label
})
}
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const fileLoggerOptions: FileTransportOptions = {
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filename: join(CONFIG.STORAGE.LOG_DIR, LOG_FILENAME),
handleExceptions: true,
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format: format.combine(
format.timestamp(),
jsonLoggerFormat
)
}
if (CONFIG.LOG.ROTATION.ENABLED) {
fileLoggerOptions.maxsize = CONFIG.LOG.ROTATION.MAX_FILE_SIZE
fileLoggerOptions.maxFiles = CONFIG.LOG.ROTATION.MAX_FILES
}
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const logger = buildLogger()
function buildLogger (labelSuffix?: string) {
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return createLogger({
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level: CONFIG.LOG.LEVEL,
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format: format.combine(
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labelFormatter(labelSuffix),
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format.splat()
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),
transports: [
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new transports.File(fileLoggerOptions),
new transports.Console({
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handleExceptions: true,
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format: format.combine(
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timestampFormatter,
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format.colorize(),
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consoleLoggerFormat
)
})
],
exitOnError: true
})
}
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function bunyanLogFactory (level: string) {
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return function (...params: any[]) {
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let meta = null
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let args = [].concat(params)
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if (arguments[0] instanceof Error) {
meta = arguments[0].toString()
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args = Array.prototype.slice.call(arguments, 1)
args.push(meta)
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} else if (typeof (args[0]) !== 'string') {
meta = arguments[0]
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args = Array.prototype.slice.call(arguments, 1)
args.push(meta)
}
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logger[level].apply(logger, args)
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}
}
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const bunyanLogger = {
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level: () => { },
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trace: bunyanLogFactory('debug'),
debug: bunyanLogFactory('debug'),
info: bunyanLogFactory('info'),
warn: bunyanLogFactory('warn'),
error: bunyanLogFactory('error'),
fatal: bunyanLogFactory('error')
}
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type LoggerTagsFn = (...tags: string[]) => { tags: string[] }
function loggerTagsFactory (...defaultTags: string[]): LoggerTagsFn {
return (...tags: string[]) => {
return { tags: defaultTags.concat(tags) }
}
}
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async function mtimeSortFilesDesc (files: string[], basePath: string) {
const promises = []
const out: { file: string, mtime: number }[] = []
for (const file of files) {
const p = stat(basePath + '/' + file)
.then(stats => {
if (stats.isFile()) out.push({ file, mtime: stats.mtime.getTime() })
})
promises.push(p)
}
await Promise.all(promises)
out.sort((a, b) => b.mtime - a.mtime)
return out
}
// ---------------------------------------------------------------------------
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export {
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LoggerTagsFn,
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buildLogger,
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timestampFormatter,
labelFormatter,
consoleLoggerFormat,
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jsonLoggerFormat,
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mtimeSortFilesDesc,
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logger,
loggerTagsFactory,
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bunyanLogger
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}