import { stat } from 'fs-extra' import { omit } from 'lodash' import { join } from 'path' import { format as sqlFormat } from 'sql-formatter' import { createLogger, format, transports } from 'winston' import { FileTransportOptions } from 'winston/lib/winston/transports' import { context } from '@opentelemetry/api' import { getSpanContext } from '@opentelemetry/api/build/src/trace/context-utils' import { CONFIG } from '../initializers/config' import { LOG_FILENAME } from '../initializers/constants' const label = CONFIG.WEBSERVER.HOSTNAME + ':' + CONFIG.WEBSERVER.PORT const consoleLoggerFormat = format.printf(info => { let additionalInfos = JSON.stringify(getAdditionalInfo(info), removeCyclicValues(), 2) if (additionalInfos === undefined || additionalInfos === '{}') additionalInfos = '' else additionalInfos = ' ' + additionalInfos if (info.sql) { if (CONFIG.LOG.PRETTIFY_SQL) { additionalInfos += '\n' + sqlFormat(info.sql, { language: 'sql', tabWidth: 2 }) } else { additionalInfos += ' - ' + info.sql } } return `[${info.label}] ${info.timestamp} ${info.level}: ${info.message}${additionalInfos}` }) const jsonLoggerFormat = format.printf(info => { return JSON.stringify(info, removeCyclicValues()) }) const timestampFormatter = format.timestamp({ format: 'YYYY-MM-DD HH:mm:ss.SSS' }) const labelFormatter = (suffix?: string) => { return format.label({ label: suffix ? `${label} ${suffix}` : label }) } const fileLoggerOptions: FileTransportOptions = { filename: join(CONFIG.STORAGE.LOG_DIR, LOG_FILENAME), handleExceptions: true, 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 } function buildLogger (labelSuffix?: string) { return createLogger({ level: CONFIG.LOG.LEVEL, defaultMeta: { get traceId () { return getSpanContext(context.active())?.traceId }, get spanId () { return getSpanContext(context.active())?.spanId }, get traceFlags () { return getSpanContext(context.active())?.traceFlags } }, format: format.combine( labelFormatter(labelSuffix), format.splat() ), transports: [ new transports.File(fileLoggerOptions), new transports.Console({ handleExceptions: true, format: format.combine( timestampFormatter, format.colorize(), consoleLoggerFormat ) }) ], exitOnError: true }) } const logger = buildLogger() // --------------------------------------------------------------------------- function bunyanLogFactory (level: string) { return function (...params: any[]) { let meta = null let args = [].concat(params) if (arguments[0] instanceof Error) { meta = arguments[0].toString() args = Array.prototype.slice.call(arguments, 1) args.push(meta) } else if (typeof (args[0]) !== 'string') { meta = arguments[0] args = Array.prototype.slice.call(arguments, 1) args.push(meta) } logger[level].apply(logger, args) } } const bunyanLogger = { level: () => { }, trace: bunyanLogFactory('debug'), debug: bunyanLogFactory('debug'), verbose: bunyanLogFactory('debug'), info: bunyanLogFactory('info'), warn: bunyanLogFactory('warn'), error: bunyanLogFactory('error'), fatal: bunyanLogFactory('error') } // --------------------------------------------------------------------------- type LoggerTagsFn = (...tags: string[]) => { tags: string[] } function loggerTagsFactory (...defaultTags: string[]): LoggerTagsFn { return (...tags: string[]) => { return { tags: defaultTags.concat(tags) } } } // --------------------------------------------------------------------------- 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 } // --------------------------------------------------------------------------- export { LoggerTagsFn, buildLogger, timestampFormatter, labelFormatter, consoleLoggerFormat, jsonLoggerFormat, mtimeSortFilesDesc, logger, loggerTagsFactory, bunyanLogger } // --------------------------------------------------------------------------- function removeCyclicValues () { const seen = new WeakSet() // Thanks: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Cyclic_object_value#Examples return (key: string, value: any) => { if (key === 'cert') return 'Replaced by the logger to avoid large log message' if (typeof value === 'object' && value !== null) { if (seen.has(value)) return seen.add(value) } if (value instanceof Set) { return Array.from(value) } if (value instanceof Map) { return Array.from(value.entries()) } if (value instanceof Error) { const error = {} Object.getOwnPropertyNames(value).forEach(key => { error[key] = value[key] }) return error } return value } } function getAdditionalInfo (info: any) { const toOmit = [ 'label', 'timestamp', 'level', 'message', 'sql', 'tags' ] return omit(info, ...toOmit) }