/**
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* logger.js: TODO: add file header description.
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*
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* (C) 2010 Charlie Robbins
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* MIT LICENCE
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*/
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'use strict';
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function _defineProperty(e, r, t) { return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, { value: t, enumerable: !0, configurable: !0, writable: !0 }) : e[r] = t, e; }
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function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
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function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
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function _defineProperties(e, r) { for (var t = 0; t < r.length; t++) { var o = r[t]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o); } }
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function _createClass(e, r, t) { return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", { writable: !1 }), e; }
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function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : i + ""; }
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function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
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function _callSuper(t, o, e) { return o = _getPrototypeOf(o), _possibleConstructorReturn(t, _isNativeReflectConstruct() ? Reflect.construct(o, e || [], _getPrototypeOf(t).constructor) : o.apply(t, e)); }
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function _possibleConstructorReturn(t, e) { if (e && ("object" == _typeof(e) || "function" == typeof e)) return e; if (void 0 !== e) throw new TypeError("Derived constructors may only return object or undefined"); return _assertThisInitialized(t); }
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function _assertThisInitialized(e) { if (void 0 === e) throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); return e; }
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function _isNativeReflectConstruct() { try { var t = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); } catch (t) {} return (_isNativeReflectConstruct = function _isNativeReflectConstruct() { return !!t; })(); }
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function _getPrototypeOf(t) { return _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function (t) { return t.__proto__ || Object.getPrototypeOf(t); }, _getPrototypeOf(t); }
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function _inherits(t, e) { if ("function" != typeof e && null !== e) throw new TypeError("Super expression must either be null or a function"); t.prototype = Object.create(e && e.prototype, { constructor: { value: t, writable: !0, configurable: !0 } }), Object.defineProperty(t, "prototype", { writable: !1 }), e && _setPrototypeOf(t, e); }
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function _setPrototypeOf(t, e) { return _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function (t, e) { return t.__proto__ = e, t; }, _setPrototypeOf(t, e); }
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var _require = require('readable-stream'),
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Stream = _require.Stream,
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Transform = _require.Transform;
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var asyncForEach = require('async/forEach');
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var _require2 = require('triple-beam'),
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LEVEL = _require2.LEVEL,
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SPLAT = _require2.SPLAT;
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var isStream = require('is-stream');
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var ExceptionHandler = require('./exception-handler');
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var RejectionHandler = require('./rejection-handler');
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var LegacyTransportStream = require('winston-transport/legacy');
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var Profiler = require('./profiler');
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var _require3 = require('./common'),
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warn = _require3.warn;
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var config = require('./config');
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/**
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* Captures the number of format (i.e. %s strings) in a given string.
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* Based on `util.format`, see Node.js source:
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* https://github.com/nodejs/node/blob/b1c8f15c5f169e021f7c46eb7b219de95fe97603/lib/util.js#L201-L230
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* @type {RegExp}
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*/
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var formatRegExp = /%[scdjifoO%]/g;
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/**
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* TODO: add class description.
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* @type {Logger}
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* @extends {Transform}
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*/
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var Logger = /*#__PURE__*/function (_Transform) {
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/**
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* Constructor function for the Logger object responsible for persisting log
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* messages and metadata to one or more transports.
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* @param {!Object} options - foo
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*/
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function Logger(options) {
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var _this;
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_classCallCheck(this, Logger);
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_this = _callSuper(this, Logger, [{
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objectMode: true
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}]);
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_this.configure(options);
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return _this;
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}
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_inherits(Logger, _Transform);
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return _createClass(Logger, [{
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key: "child",
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value: function child(defaultRequestMetadata) {
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var logger = this;
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return Object.create(logger, {
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write: {
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value: function value(info) {
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var infoClone = Object.assign({}, defaultRequestMetadata, info);
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// Object.assign doesn't copy inherited Error
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// properties so we have to do that explicitly
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//
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// Remark (indexzero): we should remove this
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// since the errors format will handle this case.
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//
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if (info instanceof Error) {
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infoClone.stack = info.stack;
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infoClone.message = info.message;
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}
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logger.write(infoClone);
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}
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}
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});
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}
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/**
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* This will wholesale reconfigure this instance by:
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* 1. Resetting all transports. Older transports will be removed implicitly.
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* 2. Set all other options including levels, colors, rewriters, filters,
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* exceptionHandlers, etc.
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* @param {!Object} options - TODO: add param description.
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* @returns {undefined}
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*/
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}, {
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key: "configure",
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value: function configure() {
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var _this2 = this;
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var _ref = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
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silent = _ref.silent,
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format = _ref.format,
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defaultMeta = _ref.defaultMeta,
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levels = _ref.levels,
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_ref$level = _ref.level,
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level = _ref$level === void 0 ? 'info' : _ref$level,
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_ref$exitOnError = _ref.exitOnError,
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exitOnError = _ref$exitOnError === void 0 ? true : _ref$exitOnError,
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transports = _ref.transports,
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colors = _ref.colors,
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emitErrs = _ref.emitErrs,
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formatters = _ref.formatters,
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padLevels = _ref.padLevels,
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rewriters = _ref.rewriters,
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stripColors = _ref.stripColors,
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exceptionHandlers = _ref.exceptionHandlers,
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rejectionHandlers = _ref.rejectionHandlers;
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// Reset transports if we already have them
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if (this.transports.length) {
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this.clear();
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}
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this.silent = silent;
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this.format = format || this.format || require('logform/json')();
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this.defaultMeta = defaultMeta || null;
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// Hoist other options onto this instance.
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this.levels = levels || this.levels || config.npm.levels;
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this.level = level;
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if (this.exceptions) {
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this.exceptions.unhandle();
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}
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if (this.rejections) {
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this.rejections.unhandle();
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}
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this.exceptions = new ExceptionHandler(this);
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this.rejections = new RejectionHandler(this);
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this.profilers = {};
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this.exitOnError = exitOnError;
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// Add all transports we have been provided.
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if (transports) {
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transports = Array.isArray(transports) ? transports : [transports];
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transports.forEach(function (transport) {
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return _this2.add(transport);
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});
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}
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if (colors || emitErrs || formatters || padLevels || rewriters || stripColors) {
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throw new Error(['{ colors, emitErrs, formatters, padLevels, rewriters, stripColors } were removed in winston@3.0.0.', 'Use a custom winston.format(function) instead.', 'See: https://github.com/winstonjs/winston/tree/master/UPGRADE-3.0.md'].join('\n'));
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}
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if (exceptionHandlers) {
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this.exceptions.handle(exceptionHandlers);
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}
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if (rejectionHandlers) {
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this.rejections.handle(rejectionHandlers);
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}
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}
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}, {
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key: "isLevelEnabled",
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value: function isLevelEnabled(level) {
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var _this3 = this;
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var givenLevelValue = getLevelValue(this.levels, level);
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if (givenLevelValue === null) {
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return false;
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}
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var configuredLevelValue = getLevelValue(this.levels, this.level);
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if (configuredLevelValue === null) {
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return false;
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}
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if (!this.transports || this.transports.length === 0) {
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return configuredLevelValue >= givenLevelValue;
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}
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var index = this.transports.findIndex(function (transport) {
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var transportLevelValue = getLevelValue(_this3.levels, transport.level);
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if (transportLevelValue === null) {
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transportLevelValue = configuredLevelValue;
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}
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return transportLevelValue >= givenLevelValue;
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});
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return index !== -1;
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}
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/* eslint-disable valid-jsdoc */
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/**
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* Ensure backwards compatibility with a `log` method
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* @param {mixed} level - Level the log message is written at.
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* @param {mixed} msg - TODO: add param description.
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* @param {mixed} meta - TODO: add param description.
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* @returns {Logger} - TODO: add return description.
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*
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* @example
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* // Supports the existing API:
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* logger.log('info', 'Hello world', { custom: true });
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* logger.log('info', new Error('Yo, it\'s on fire'));
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*
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* // Requires winston.format.splat()
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* logger.log('info', '%s %d%%', 'A string', 50, { thisIsMeta: true });
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*
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* // And the new API with a single JSON literal:
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* logger.log({ level: 'info', message: 'Hello world', custom: true });
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* logger.log({ level: 'info', message: new Error('Yo, it\'s on fire') });
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*
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* // Also requires winston.format.splat()
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* logger.log({
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* level: 'info',
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* message: '%s %d%%',
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* [SPLAT]: ['A string', 50],
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* meta: { thisIsMeta: true }
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* });
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*
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*/
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/* eslint-enable valid-jsdoc */
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}, {
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key: "log",
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value: function log(level, msg) {
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for (var _len = arguments.length, splat = new Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
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splat[_key - 2] = arguments[_key];
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}
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// eslint-disable-line max-params
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// Optimize for the hotpath of logging JSON literals
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if (arguments.length === 1) {
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// Yo dawg, I heard you like levels ... seriously ...
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// In this context the LHS `level` here is actually the `info` so read
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// this as: info[LEVEL] = info.level;
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level[LEVEL] = level.level;
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this._addDefaultMeta(level);
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this.write(level);
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return this;
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}
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// Slightly less hotpath, but worth optimizing for.
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if (arguments.length === 2) {
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if (msg && _typeof(msg) === 'object') {
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msg[LEVEL] = msg.level = level;
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this._addDefaultMeta(msg);
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this.write(msg);
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return this;
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}
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msg = _defineProperty(_defineProperty(_defineProperty({}, LEVEL, level), "level", level), "message", msg);
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this._addDefaultMeta(msg);
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this.write(msg);
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return this;
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}
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var meta = splat[0];
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if (_typeof(meta) === 'object' && meta !== null) {
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// Extract tokens, if none available default to empty array to
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// ensure consistancy in expected results
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var tokens = msg && msg.match && msg.match(formatRegExp);
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if (!tokens) {
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var info = Object.assign({}, this.defaultMeta, meta, _defineProperty(_defineProperty(_defineProperty(_defineProperty({}, LEVEL, level), SPLAT, splat), "level", level), "message", msg));
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if (meta.message) info.message = "".concat(info.message, " ").concat(meta.message);
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if (meta.stack) info.stack = meta.stack;
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if (meta.cause) info.cause = meta.cause;
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this.write(info);
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return this;
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}
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}
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this.write(Object.assign({}, this.defaultMeta, _defineProperty(_defineProperty(_defineProperty(_defineProperty({}, LEVEL, level), SPLAT, splat), "level", level), "message", msg)));
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return this;
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}
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/**
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* Pushes data so that it can be picked up by all of our pipe targets.
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* @param {mixed} info - TODO: add param description.
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* @param {mixed} enc - TODO: add param description.
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* @param {mixed} callback - Continues stream processing.
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* @returns {undefined}
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* @private
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*/
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}, {
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key: "_transform",
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value: function _transform(info, enc, callback) {
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if (this.silent) {
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return callback();
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}
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// [LEVEL] is only soft guaranteed to be set here since we are a proper
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// stream. It is likely that `info` came in through `.log(info)` or
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// `.info(info)`. If it is not defined, however, define it.
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// This LEVEL symbol is provided by `triple-beam` and also used in:
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// - logform
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// - winston-transport
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// - abstract-winston-transport
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if (!info[LEVEL]) {
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info[LEVEL] = info.level;
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}
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// Remark: really not sure what to do here, but this has been reported as
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// very confusing by pre winston@2.0.0 users as quite confusing when using
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// custom levels.
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if (!this.levels[info[LEVEL]] && this.levels[info[LEVEL]] !== 0) {
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// eslint-disable-next-line no-console
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console.error('[winston] Unknown logger level: %s', info[LEVEL]);
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}
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// Remark: not sure if we should simply error here.
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if (!this._readableState.pipes) {
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// eslint-disable-next-line no-console
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console.error('[winston] Attempt to write logs with no transports, which can increase memory usage: %j', info);
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}
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// Here we write to the `format` pipe-chain, which on `readable` above will
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// push the formatted `info` Object onto the buffer for this instance. We trap
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// (and re-throw) any errors generated by the user-provided format, but also
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// guarantee that the streams callback is invoked so that we can continue flowing.
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try {
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this.push(this.format.transform(info, this.format.options));
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} finally {
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this._writableState.sync = false;
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// eslint-disable-next-line callback-return
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callback();
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}
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}
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/**
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* Delays the 'finish' event until all transport pipe targets have
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* also emitted 'finish' or are already finished.
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* @param {mixed} callback - Continues stream processing.
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*/
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}, {
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key: "_final",
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value: function _final(callback) {
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var transports = this.transports.slice();
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asyncForEach(transports, function (transport, next) {
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if (!transport || transport.finished) return setImmediate(next);
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transport.once('finish', next);
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transport.end();
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}, callback);
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}
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/**
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* Adds the transport to this logger instance by piping to it.
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* @param {mixed} transport - TODO: add param description.
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* @returns {Logger} - TODO: add return description.
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*/
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}, {
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key: "add",
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value: function add(transport) {
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// Support backwards compatibility with all existing `winston < 3.x.x`
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// transports which meet one of two criteria:
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// 1. They inherit from winston.Transport in < 3.x.x which is NOT a stream.
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// 2. They expose a log method which has a length greater than 2 (i.e. more then
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// just `log(info, callback)`.
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var target = !isStream(transport) || transport.log.length > 2 ? new LegacyTransportStream({
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transport: transport
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}) : transport;
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if (!target._writableState || !target._writableState.objectMode) {
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throw new Error('Transports must WritableStreams in objectMode. Set { objectMode: true }.');
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}
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// Listen for the `error` event and the `warn` event on the new Transport.
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this._onEvent('error', target);
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this._onEvent('warn', target);
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this.pipe(target);
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if (transport.handleExceptions) {
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this.exceptions.handle();
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}
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if (transport.handleRejections) {
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this.rejections.handle();
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}
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return this;
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}
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/**
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* Removes the transport from this logger instance by unpiping from it.
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* @param {mixed} transport - TODO: add param description.
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* @returns {Logger} - TODO: add return description.
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*/
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}, {
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key: "remove",
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value: function remove(transport) {
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if (!transport) return this;
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var target = transport;
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if (!isStream(transport) || transport.log.length > 2) {
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target = this.transports.filter(function (match) {
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return match.transport === transport;
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})[0];
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}
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if (target) {
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this.unpipe(target);
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}
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return this;
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}
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/**
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* Removes all transports from this logger instance.
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* @returns {Logger} - TODO: add return description.
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*/
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}, {
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key: "clear",
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value: function clear() {
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this.unpipe();
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return this;
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}
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/**
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* Cleans up resources (streams, event listeners) for all transports
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* associated with this instance (if necessary).
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* @returns {Logger} - TODO: add return description.
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*/
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}, {
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key: "close",
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value: function close() {
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this.exceptions.unhandle();
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this.rejections.unhandle();
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this.clear();
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this.emit('close');
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return this;
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}
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/**
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* Sets the `target` levels specified on this instance.
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* @param {Object} Target levels to use on this instance.
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*/
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}, {
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key: "setLevels",
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value: function setLevels() {
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warn.deprecated('setLevels');
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}
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/**
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* Queries the all transports for this instance with the specified `options`.
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* This will aggregate each transport's results into one object containing
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* a property per transport.
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* @param {Object} options - Query options for this instance.
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* @param {function} callback - Continuation to respond to when complete.
|
*/
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}, {
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key: "query",
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value: function query(options, callback) {
|
if (typeof options === 'function') {
|
callback = options;
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options = {};
|
}
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options = options || {};
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var results = {};
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var queryObject = Object.assign({}, options.query || {});
|
|
// Helper function to query a single transport
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function queryTransport(transport, next) {
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if (options.query && typeof transport.formatQuery === 'function') {
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options.query = transport.formatQuery(queryObject);
|
}
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transport.query(options, function (err, res) {
|
if (err) {
|
return next(err);
|
}
|
if (typeof transport.formatResults === 'function') {
|
res = transport.formatResults(res, options.format);
|
}
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next(null, res);
|
});
|
}
|
|
// Helper function to accumulate the results from `queryTransport` into
|
// the `results`.
|
function addResults(transport, next) {
|
queryTransport(transport, function (err, result) {
|
// queryTransport could potentially invoke the callback multiple times
|
// since Transport code can be unpredictable.
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if (next) {
|
result = err || result;
|
if (result) {
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results[transport.name] = result;
|
}
|
|
// eslint-disable-next-line callback-return
|
next();
|
}
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next = null;
|
});
|
}
|
|
// Iterate over the transports in parallel setting the appropriate key in
|
// the `results`.
|
asyncForEach(this.transports.filter(function (transport) {
|
return !!transport.query;
|
}), addResults, function () {
|
return callback(null, results);
|
});
|
}
|
|
/**
|
* Returns a log stream for all transports. Options object is optional.
|
* @param{Object} options={} - Stream options for this instance.
|
* @returns {Stream} - TODO: add return description.
|
*/
|
}, {
|
key: "stream",
|
value: function stream() {
|
var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
|
var out = new Stream();
|
var streams = [];
|
out._streams = streams;
|
out.destroy = function () {
|
var i = streams.length;
|
while (i--) {
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streams[i].destroy();
|
}
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};
|
|
// Create a list of all transports for this instance.
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this.transports.filter(function (transport) {
|
return !!transport.stream;
|
}).forEach(function (transport) {
|
var str = transport.stream(options);
|
if (!str) {
|
return;
|
}
|
streams.push(str);
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str.on('log', function (log) {
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log.transport = log.transport || [];
|
log.transport.push(transport.name);
|
out.emit('log', log);
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});
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str.on('error', function (err) {
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err.transport = err.transport || [];
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err.transport.push(transport.name);
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out.emit('error', err);
|
});
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});
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return out;
|
}
|
|
/**
|
* Returns an object corresponding to a specific timing. When done is called
|
* the timer will finish and log the duration. e.g.:
|
* @returns {Profile} - TODO: add return description.
|
* @example
|
* const timer = winston.startTimer()
|
* setTimeout(() => {
|
* timer.done({
|
* message: 'Logging message'
|
* });
|
* }, 1000);
|
*/
|
}, {
|
key: "startTimer",
|
value: function startTimer() {
|
return new Profiler(this);
|
}
|
|
/**
|
* Tracks the time inbetween subsequent calls to this method with the same
|
* `id` parameter. The second call to this method will log the difference in
|
* milliseconds along with the message.
|
* @param {string} id Unique id of the profiler
|
* @returns {Logger} - TODO: add return description.
|
*/
|
}, {
|
key: "profile",
|
value: function profile(id) {
|
var time = Date.now();
|
if (this.profilers[id]) {
|
var timeEnd = this.profilers[id];
|
delete this.profilers[id];
|
|
// Attempt to be kind to users if they are still using older APIs.
|
for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
|
args[_key2 - 1] = arguments[_key2];
|
}
|
if (typeof args[args.length - 2] === 'function') {
|
// eslint-disable-next-line no-console
|
console.warn('Callback function no longer supported as of winston@3.0.0');
|
args.pop();
|
}
|
|
// Set the duration property of the metadata
|
var info = _typeof(args[args.length - 1]) === 'object' ? args.pop() : {};
|
info.level = info.level || 'info';
|
info.durationMs = time - timeEnd;
|
info.message = info.message || id;
|
return this.write(info);
|
}
|
this.profilers[id] = time;
|
return this;
|
}
|
|
/**
|
* Backwards compatibility to `exceptions.handle` in winston < 3.0.0.
|
* @returns {undefined}
|
* @deprecated
|
*/
|
}, {
|
key: "handleExceptions",
|
value: function handleExceptions() {
|
var _this$exceptions;
|
// eslint-disable-next-line no-console
|
console.warn('Deprecated: .handleExceptions() will be removed in winston@4. Use .exceptions.handle()');
|
(_this$exceptions = this.exceptions).handle.apply(_this$exceptions, arguments);
|
}
|
|
/**
|
* Backwards compatibility to `exceptions.handle` in winston < 3.0.0.
|
* @returns {undefined}
|
* @deprecated
|
*/
|
}, {
|
key: "unhandleExceptions",
|
value: function unhandleExceptions() {
|
var _this$exceptions2;
|
// eslint-disable-next-line no-console
|
console.warn('Deprecated: .unhandleExceptions() will be removed in winston@4. Use .exceptions.unhandle()');
|
(_this$exceptions2 = this.exceptions).unhandle.apply(_this$exceptions2, arguments);
|
}
|
|
/**
|
* Throw a more meaningful deprecation notice
|
* @throws {Error} - TODO: add throws description.
|
*/
|
}, {
|
key: "cli",
|
value: function cli() {
|
throw new Error(['Logger.cli() was removed in winston@3.0.0', 'Use a custom winston.formats.cli() instead.', 'See: https://github.com/winstonjs/winston/tree/master/UPGRADE-3.0.md'].join('\n'));
|
}
|
|
/**
|
* Bubbles the `event` that occured on the specified `transport` up
|
* from this instance.
|
* @param {string} event - The event that occured
|
* @param {Object} transport - Transport on which the event occured
|
* @private
|
*/
|
}, {
|
key: "_onEvent",
|
value: function _onEvent(event, transport) {
|
function transportEvent(err) {
|
// https://github.com/winstonjs/winston/issues/1364
|
if (event === 'error' && !this.transports.includes(transport)) {
|
this.add(transport);
|
}
|
this.emit(event, err, transport);
|
}
|
if (!transport['__winston' + event]) {
|
transport['__winston' + event] = transportEvent.bind(this);
|
transport.on(event, transport['__winston' + event]);
|
}
|
}
|
}, {
|
key: "_addDefaultMeta",
|
value: function _addDefaultMeta(msg) {
|
if (this.defaultMeta) {
|
Object.assign(msg, this.defaultMeta);
|
}
|
}
|
}]);
|
}(Transform);
|
function getLevelValue(levels, level) {
|
var value = levels[level];
|
if (!value && value !== 0) {
|
return null;
|
}
|
return value;
|
}
|
|
/**
|
* Represents the current readableState pipe targets for this Logger instance.
|
* @type {Array|Object}
|
*/
|
Object.defineProperty(Logger.prototype, 'transports', {
|
configurable: false,
|
enumerable: true,
|
get: function get() {
|
var pipes = this._readableState.pipes;
|
return !Array.isArray(pipes) ? [pipes].filter(Boolean) : pipes;
|
}
|
});
|
module.exports = Logger;
|
