import * as program from 'commander' import { createReadStream, readdirSync, statSync } from 'fs-extra' import { join } from 'path' import { createInterface } from 'readline' import * as winston from 'winston' import { labelFormatter } from '../server/helpers/logger' import { CONFIG } from '../server/initializers/constants' 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 return `[${info.label}] ${toTimeFormat(info.timestamp)} ${info.level}: ${info.message}${additionalInfos}` }) const logger = winston.createLogger({ transports: [ new winston.transports.Console({ level: program['level'] || 'debug', stderrLevels: [], format: winston.format.combine( winston.format.splat(), labelFormatter, winston.format.colorize(), loggerFormat ) }) ], exitOnError: true }) const logLevels = { error: logger.error.bind(logger), warn: logger.warn.bind(logger), info: logger.info.bind(logger), debug: logger.debug.bind(logger) } const logFiles = readdirSync(CONFIG.STORAGE.LOG_DIR) const lastLogFile = getNewestFile(logFiles, CONFIG.STORAGE.LOG_DIR) const path = join(CONFIG.STORAGE.LOG_DIR, lastLogFile) console.log('Opening %s.', path) const rl = createInterface({ input: createReadStream(path) }) rl.on('line', line => { const log = JSON.parse(line) // Don't know why but loggerFormat does not remove splat key Object.assign(log, { splat: undefined }) logLevels[log.level](log) }) 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 : '' }