PeerTube/scripts/parse-log.ts

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import * as program from 'commander'
import { createReadStream, readdirSync, statSync } from 'fs-extra'
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import { join } from 'path'
import { createInterface } from 'readline'
import * as winston from 'winston'
import { labelFormatter } from '../server/helpers/logger'
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import { CONFIG } from '../server/initializers/constants'
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program
.option('-l, --level [level]', 'Level log (debug/info/warn/error)')
.parse(process.argv)
const excludedKeys = {
level: true,
message: true,
splat: true,
timestamp: true,
label: true
}
function keysExcluder (key, value) {
return excludedKeys[key] === true ? undefined : value
}
const loggerFormat = winston.format.printf((info) => {
let additionalInfos = JSON.stringify(info, keysExcluder, 2)
if (additionalInfos === '{}') additionalInfos = ''
else additionalInfos = ' ' + additionalInfos
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return `[${info.label}] ${toTimeFormat(info.timestamp)} ${info.level}: ${info.message}${additionalInfos}`
})
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const logger = winston.createLogger({
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transports: [
new winston.transports.Console({
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level: program['level'] || 'debug',
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stderrLevels: [],
format: winston.format.combine(
winston.format.splat(),
labelFormatter,
winston.format.colorize(),
loggerFormat
)
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})
],
exitOnError: true
})
const logLevels = {
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error: logger.error.bind(logger),
warn: logger.warn.bind(logger),
info: logger.info.bind(logger),
debug: logger.debug.bind(logger)
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}
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const logFiles = readdirSync(CONFIG.STORAGE.LOG_DIR)
const lastLogFile = getNewestFile(logFiles, CONFIG.STORAGE.LOG_DIR)
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const path = join(CONFIG.STORAGE.LOG_DIR, lastLogFile)
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console.log('Opening %s.', path)
const rl = createInterface({
input: createReadStream(path)
})
rl.on('line', line => {
const log = JSON.parse(line)
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// Don't know why but loggerFormat does not remove splat key
Object.assign(log, { splat: undefined })
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logLevels[log.level](log)
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})
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function toTimeFormat (time: string) {
const timestamp = Date.parse(time)
if (isNaN(timestamp) === true) return 'Unknown date'
return new Date(timestamp).toISOString()
}
// Thanks: https://stackoverflow.com/a/37014317
function getNewestFile (files: string[], basePath: string) {
const out = []
files.forEach(file => {
const stats = statSync(basePath + '/' + file)
if (stats.isFile()) out.push({ file, mtime: stats.mtime.getTime() })
})
out.sort((a, b) => b.mtime - a.mtime)
return (out.length > 0) ? out[ 0 ].file : ''
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}