var Logger = require('bunyan') , Stream = require('stream') , utils = require('./utils') function getlvl(x) { switch(true) { case x < 15: return 'trace' case x < 25: return 'debug' case x < 35: return 'info' case x == 35: return 'http' case x < 45: return 'warn' case x < 55: return 'error' default: return 'fatal' } } module.exports.setup = function(logs) { var streams = [] if (logs == null) logs = [{ type: 'stdout', format: 'pretty', level: 'http' }] logs.forEach(function(target) { var stream = new Stream() stream.writable = true if (target.type === 'stdout' || target.type === 'stderr') { // destination stream var dest = target.type === 'stdout' ? process.stdout : process.stderr if (target.format === 'pretty') { // making fake stream for prettypritting stream.write = function(obj) { dest.write(print(obj.level, obj.msg, obj, dest.isTTY) + '\n') } } else { stream.write = function(obj) { dest.write(JSON.stringify(obj, Logger.safeCycles()) + '\n') } } } else if (target.type === 'file') { var dest = require('fs').createWriteStream(target.path, {flags: 'a', encoding: 'utf8'}) dest.on('error', function (err) { Logger.emit('error', err) }) stream.write = function(obj) { dest.write(JSON.stringify(obj, Logger.safeCycles()) + '\n') } } else { throw new Error('wrong target type for a log') } if (target.level === 'http') target.level = 35 streams.push({ type: 'raw', level: target.level || 35, stream: stream, }) }) var logger = new Logger({ name: 'sinopia', streams: streams, serializers: { err: Logger.stdSerializers.err, req: Logger.stdSerializers.req, res: Logger.stdSerializers.res, }, }) module.exports.logger = logger } // adopted from socket.io // this part was converted to coffee-script and back again over the years, // so it might look weird // level to color var levels = { fatal: 31, error: 31, warn: 33, http: 35, info: 36, debug: 90, trace: 90, } var max = 0 for (var l in levels) { max = Math.max(max, l.length) } function pad(str) { if (str.length < max) return str + new Array(max - str.length + 1).join(' ') return str } var subsystems = [{ in: '\033[32m<--\033[39m', out: '\033[33m-->\033[39m', fs: '\033[90m-=-\033[39m', default: '\033[34m---\033[39m', }, { in: '<--', out: '-->', fs: '-=-', default: '---', }] function print(type, msg, obj, colors) { if (typeof type === 'number') type = getlvl(type) var finalmsg = msg.replace(/@{(!?[$A-Za-z_][$0-9A-Za-z\._]*)}/g, function(_, name) { var str = obj, is_error if (name[0] === '!') { name = name.substr(1) is_error = true } var _ref = name.split('.') for (var _i = 0; _i < _ref.length; _i++) { var id = _ref[_i] if (utils.is_object(str) || Array.isArray(str)) { str = str[id] } else { str = undefined } } if (typeof(str) === 'string') { if (!colors || ~str.indexOf('\n')) { return str } else if (is_error) { return '\033[31m' + str + '\033[39m' } else { return '\033[32m' + str + '\033[39m' } } else { return require('util').inspect(str, void 0, void 0, colors) } }) var sub = subsystems[+!colors][obj.sub] || subsystems[+!colors].default // ^^--- black magic... kidding, just "colors ? 0 : 1" if (colors) { return ' \033[' + levels[type] + 'm' + (pad(type)) + '\033[39m ' + sub + ' ' + finalmsg } else { return ' ' + (pad(type)) + ' ' + sub + ' ' + finalmsg } }