/* eslint-disable complexity,max-statements */
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/**
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* file.js: Transport for outputting to a local log file.
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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 _readOnlyError(r) { throw new TypeError('"' + r + '" is read-only'); }
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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 fs = require('fs');
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var path = require('path');
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var asyncSeries = require('async/series');
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var zlib = require('zlib');
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var _require = require('triple-beam'),
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MESSAGE = _require.MESSAGE;
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var _require2 = require('readable-stream'),
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Stream = _require2.Stream,
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PassThrough = _require2.PassThrough;
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var TransportStream = require('winston-transport');
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var debug = require('@dabh/diagnostics')('winston:file');
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var os = require('os');
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var tailFile = require('../tail-file');
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/**
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* Transport for outputting to a local log file.
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* @type {File}
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* @extends {TransportStream}
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*/
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module.exports = /*#__PURE__*/function (_TransportStream) {
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/**
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* Constructor function for the File transport object responsible for
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* persisting log messages and metadata to one or more files.
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* @param {Object} options - Options for this instance.
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*/
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function File() {
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var _this;
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var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
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_classCallCheck(this, File);
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_this = _callSuper(this, File, [options]);
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// Expose the name of this Transport on the prototype.
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_this.name = options.name || 'file';
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// Helper function which throws an `Error` in the event that any of the
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// rest of the arguments is present in `options`.
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function throwIf(target) {
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for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
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args[_key - 1] = arguments[_key];
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}
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args.slice(1).forEach(function (name) {
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if (options[name]) {
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throw new Error("Cannot set ".concat(name, " and ").concat(target, " together"));
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}
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});
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}
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// Setup the base stream that always gets piped to to handle buffering.
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_this._stream = new PassThrough();
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_this._stream.setMaxListeners(30);
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// Bind this context for listener methods.
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_this._onError = _this._onError.bind(_this);
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if (options.filename || options.dirname) {
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throwIf('filename or dirname', 'stream');
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_this._basename = _this.filename = options.filename ? path.basename(options.filename) : 'winston.log';
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_this.dirname = options.dirname || path.dirname(options.filename);
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_this.options = options.options || {
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flags: 'a'
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};
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} else if (options.stream) {
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// eslint-disable-next-line no-console
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console.warn('options.stream will be removed in winston@4. Use winston.transports.Stream');
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throwIf('stream', 'filename', 'maxsize');
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_this._dest = _this._stream.pipe(_this._setupStream(options.stream));
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_this.dirname = path.dirname(_this._dest.path);
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// We need to listen for drain events when write() returns false. This
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// can make node mad at times.
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} else {
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throw new Error('Cannot log to file without filename or stream.');
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}
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_this.maxsize = options.maxsize || null;
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_this.rotationFormat = options.rotationFormat || false;
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_this.zippedArchive = options.zippedArchive || false;
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_this.maxFiles = options.maxFiles || null;
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_this.eol = typeof options.eol === 'string' ? options.eol : os.EOL;
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_this.tailable = options.tailable || false;
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_this.lazy = options.lazy || false;
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// Internal state variables representing the number of files this instance
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// has created and the current size (in bytes) of the current logfile.
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_this._size = 0;
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_this._pendingSize = 0;
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_this._created = 0;
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_this._drain = false;
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_this._opening = false;
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_this._ending = false;
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_this._fileExist = false;
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if (_this.dirname) _this._createLogDirIfNotExist(_this.dirname);
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if (!_this.lazy) _this.open();
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return _this;
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}
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_inherits(File, _TransportStream);
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return _createClass(File, [{
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key: "finishIfEnding",
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value: function finishIfEnding() {
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var _this2 = this;
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if (this._ending) {
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if (this._opening) {
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this.once('open', function () {
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_this2._stream.once('finish', function () {
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return _this2.emit('finish');
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});
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setImmediate(function () {
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return _this2._stream.end();
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});
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});
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} else {
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this._stream.once('finish', function () {
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return _this2.emit('finish');
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});
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setImmediate(function () {
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return _this2._stream.end();
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});
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}
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}
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}
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/**
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* Core logging method exposed to Winston. Metadata is optional.
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* @param {Object} info - TODO: add param description.
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* @param {Function} callback - TODO: add param description.
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* @returns {undefined}
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*/
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}, {
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key: "log",
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value: function log(info) {
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var _this3 = this;
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var callback = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : function () {};
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// Remark: (jcrugzz) What is necessary about this callback(null, true) now
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// when thinking about 3.x? Should silent be handled in the base
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// TransportStream _write method?
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if (this.silent) {
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callback();
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return true;
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}
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// Output stream buffer is full and has asked us to wait for the drain event
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if (this._drain) {
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this._stream.once('drain', function () {
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_this3._drain = false;
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_this3.log(info, callback);
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});
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return;
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}
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if (this._rotate) {
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this._stream.once('rotate', function () {
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_this3._rotate = false;
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_this3.log(info, callback);
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});
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return;
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}
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if (this.lazy) {
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if (!this._fileExist) {
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if (!this._opening) {
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this.open();
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}
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this.once('open', function () {
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_this3._fileExist = true;
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_this3.log(info, callback);
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return;
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});
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return;
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}
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if (this._needsNewFile(this._pendingSize)) {
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this._dest.once('close', function () {
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if (!_this3._opening) {
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_this3.open();
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}
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_this3.once('open', function () {
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_this3.log(info, callback);
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return;
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});
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return;
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});
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return;
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}
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}
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// Grab the raw string and append the expected EOL.
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var output = "".concat(info[MESSAGE]).concat(this.eol);
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var bytes = Buffer.byteLength(output);
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// After we have written to the PassThrough check to see if we need
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// to rotate to the next file.
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//
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// Remark: This gets called too early and does not depict when data
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// has been actually flushed to disk.
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function logged() {
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var _this4 = this;
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this._size += bytes;
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this._pendingSize -= bytes;
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debug('logged %s %s', this._size, output);
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this.emit('logged', info);
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// Do not attempt to rotate files while rotating
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if (this._rotate) {
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return;
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}
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// Do not attempt to rotate files while opening
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if (this._opening) {
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return;
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}
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// Check to see if we need to end the stream and create a new one.
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if (!this._needsNewFile()) {
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return;
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}
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if (this.lazy) {
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this._endStream(function () {
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_this4.emit('fileclosed');
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});
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return;
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}
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// End the current stream, ensure it flushes and create a new one.
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// This could potentially be optimized to not run a stat call but its
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// the safest way since we are supporting `maxFiles`.
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this._rotate = true;
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this._endStream(function () {
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return _this4._rotateFile();
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});
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}
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// Keep track of the pending bytes being written while files are opening
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// in order to properly rotate the PassThrough this._stream when the file
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// eventually does open.
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this._pendingSize += bytes;
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if (this._opening && !this.rotatedWhileOpening && this._needsNewFile(this._size + this._pendingSize)) {
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this.rotatedWhileOpening = true;
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}
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var written = this._stream.write(output, logged.bind(this));
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if (!written) {
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this._drain = true;
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this._stream.once('drain', function () {
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_this3._drain = false;
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callback();
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});
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} else {
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callback(); // eslint-disable-line callback-return
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}
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debug('written', written, this._drain);
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this.finishIfEnding();
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return written;
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}
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/**
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* Query the transport. Options object is optional.
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* @param {Object} options - Loggly-like query options for this instance.
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* @param {function} callback - Continuation to respond to when complete.
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* TODO: Refactor me.
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*/
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}, {
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key: "query",
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value: function query(options, callback) {
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if (typeof options === 'function') {
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callback = options;
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options = {};
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}
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options = normalizeQuery(options);
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var file = path.join(this.dirname, this.filename);
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var buff = '';
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var results = [];
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var row = 0;
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var stream = fs.createReadStream(file, {
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encoding: 'utf8'
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});
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stream.on('error', function (err) {
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if (stream.readable) {
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stream.destroy();
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}
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if (!callback) {
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return;
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}
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return err.code !== 'ENOENT' ? callback(err) : callback(null, results);
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});
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stream.on('data', function (data) {
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data = (buff + data).split(/\n+/);
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var l = data.length - 1;
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var i = 0;
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for (; i < l; i++) {
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if (!options.start || row >= options.start) {
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add(data[i]);
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}
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row++;
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}
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buff = data[l];
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});
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stream.on('close', function () {
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if (buff) {
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add(buff, true);
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}
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if (options.order === 'desc') {
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results = results.reverse();
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}
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// eslint-disable-next-line callback-return
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if (callback) callback(null, results);
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});
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function add(buff, attempt) {
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try {
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var log = JSON.parse(buff);
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if (check(log)) {
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push(log);
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}
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} catch (e) {
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if (!attempt) {
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stream.emit('error', e);
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}
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}
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}
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function push(log) {
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if (options.rows && results.length >= options.rows && options.order !== 'desc') {
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if (stream.readable) {
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stream.destroy();
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}
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return;
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}
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if (options.fields) {
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log = options.fields.reduce(function (obj, key) {
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obj[key] = log[key];
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return obj;
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}, {});
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}
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if (options.order === 'desc') {
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if (results.length >= options.rows) {
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results.shift();
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}
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}
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results.push(log);
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}
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function check(log) {
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if (!log) {
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return;
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}
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if (_typeof(log) !== 'object') {
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return;
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}
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var time = new Date(log.timestamp);
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if (options.from && time < options.from || options.until && time > options.until || options.level && options.level !== log.level) {
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return;
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}
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return true;
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}
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function normalizeQuery(options) {
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options = options || {};
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// limit
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options.rows = options.rows || options.limit || 10;
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// starting row offset
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options.start = options.start || 0;
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// now
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options.until = options.until || new Date();
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if (_typeof(options.until) !== 'object') {
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options.until = new Date(options.until);
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}
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// now - 24
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options.from = options.from || options.until - 24 * 60 * 60 * 1000;
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if (_typeof(options.from) !== 'object') {
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options.from = new Date(options.from);
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}
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// 'asc' or 'desc'
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options.order = options.order || 'desc';
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return options;
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}
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}
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/**
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* Returns a log stream for this transport. Options object is optional.
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* @param {Object} options - Stream options for this instance.
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* @returns {Stream} - TODO: add return description.
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* TODO: Refactor me.
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*/
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}, {
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key: "stream",
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value: function stream() {
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var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
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var file = path.join(this.dirname, this.filename);
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var stream = new Stream();
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var tail = {
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file: file,
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start: options.start
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};
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stream.destroy = tailFile(tail, function (err, line) {
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if (err) {
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return stream.emit('error', err);
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}
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try {
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stream.emit('data', line);
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line = JSON.parse(line);
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stream.emit('log', line);
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} catch (e) {
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stream.emit('error', e);
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}
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});
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return stream;
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}
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/**
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* Checks to see the filesize of.
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* @returns {undefined}
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*/
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}, {
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key: "open",
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value: function open() {
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var _this5 = this;
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// If we do not have a filename then we were passed a stream and
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// don't need to keep track of size.
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if (!this.filename) return;
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if (this._opening) return;
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this._opening = true;
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// Stat the target file to get the size and create the stream.
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this.stat(function (err, size) {
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if (err) {
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return _this5.emit('error', err);
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}
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debug('stat done: %s { size: %s }', _this5.filename, size);
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_this5._size = size;
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_this5._dest = _this5._createStream(_this5._stream);
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_this5._opening = false;
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_this5.once('open', function () {
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if (!_this5._stream.emit('rotate')) {
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_this5._rotate = false;
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}
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});
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});
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}
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/**
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* Stat the file and assess information in order to create the proper stream.
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* @param {function} callback - TODO: add param description.
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* @returns {undefined}
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*/
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}, {
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key: "stat",
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value: function stat(callback) {
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var _this6 = this;
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var target = this._getFile();
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var fullpath = path.join(this.dirname, target);
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fs.stat(fullpath, function (err, stat) {
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if (err && err.code === 'ENOENT') {
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debug('ENOENT ok', fullpath);
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// Update internally tracked filename with the new target name.
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_this6.filename = target;
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return callback(null, 0);
|
}
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if (err) {
|
debug("err ".concat(err.code, " ").concat(fullpath));
|
return callback(err);
|
}
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if (!stat || _this6._needsNewFile(stat.size)) {
|
// If `stats.size` is greater than the `maxsize` for this
|
// instance then try again.
|
return _this6._incFile(function () {
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return _this6.stat(callback);
|
});
|
}
|
|
// Once we have figured out what the filename is, set it
|
// and return the size.
|
_this6.filename = target;
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callback(null, stat.size);
|
});
|
}
|
|
/**
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* Closes the stream associated with this instance.
|
* @param {function} cb - TODO: add param description.
|
* @returns {undefined}
|
*/
|
}, {
|
key: "close",
|
value: function close(cb) {
|
var _this7 = this;
|
if (!this._stream) {
|
return;
|
}
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this._stream.end(function () {
|
if (cb) {
|
cb(); // eslint-disable-line callback-return
|
}
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_this7.emit('flush');
|
_this7.emit('closed');
|
});
|
}
|
|
/**
|
* TODO: add method description.
|
* @param {number} size - TODO: add param description.
|
* @returns {undefined}
|
*/
|
}, {
|
key: "_needsNewFile",
|
value: function _needsNewFile(size) {
|
size = size || this._size;
|
return this.maxsize && size >= this.maxsize;
|
}
|
|
/**
|
* TODO: add method description.
|
* @param {Error} err - TODO: add param description.
|
* @returns {undefined}
|
*/
|
}, {
|
key: "_onError",
|
value: function _onError(err) {
|
this.emit('error', err);
|
}
|
|
/**
|
* TODO: add method description.
|
* @param {Stream} stream - TODO: add param description.
|
* @returns {mixed} - TODO: add return description.
|
*/
|
}, {
|
key: "_setupStream",
|
value: function _setupStream(stream) {
|
stream.on('error', this._onError);
|
return stream;
|
}
|
|
/**
|
* TODO: add method description.
|
* @param {Stream} stream - TODO: add param description.
|
* @returns {mixed} - TODO: add return description.
|
*/
|
}, {
|
key: "_cleanupStream",
|
value: function _cleanupStream(stream) {
|
stream.removeListener('error', this._onError);
|
stream.destroy();
|
return stream;
|
}
|
|
/**
|
* TODO: add method description.
|
*/
|
}, {
|
key: "_rotateFile",
|
value: function _rotateFile() {
|
var _this8 = this;
|
this._incFile(function () {
|
return _this8.open();
|
});
|
}
|
|
/**
|
* Unpipe from the stream that has been marked as full and end it so it
|
* flushes to disk.
|
*
|
* @param {function} callback - Callback for when the current file has closed.
|
* @private
|
*/
|
}, {
|
key: "_endStream",
|
value: function _endStream() {
|
var _this9 = this;
|
var callback = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : function () {};
|
if (this._dest) {
|
this._stream.unpipe(this._dest);
|
this._dest.end(function () {
|
_this9._cleanupStream(_this9._dest);
|
callback();
|
});
|
} else {
|
callback(); // eslint-disable-line callback-return
|
}
|
}
|
|
/**
|
* Returns the WritableStream for the active file on this instance. If we
|
* should gzip the file then a zlib stream is returned.
|
*
|
* @param {ReadableStream} source –PassThrough to pipe to the file when open.
|
* @returns {WritableStream} Stream that writes to disk for the active file.
|
*/
|
}, {
|
key: "_createStream",
|
value: function _createStream(source) {
|
var _this10 = this;
|
var fullpath = path.join(this.dirname, this.filename);
|
debug('create stream start', fullpath, this.options);
|
var dest = fs.createWriteStream(fullpath, this.options)
|
// TODO: What should we do with errors here?
|
.on('error', function (err) {
|
return debug(err);
|
}).on('close', function () {
|
return debug('close', dest.path, dest.bytesWritten);
|
}).on('open', function () {
|
debug('file open ok', fullpath);
|
_this10.emit('open', fullpath);
|
source.pipe(dest);
|
|
// If rotation occured during the open operation then we immediately
|
// start writing to a new PassThrough, begin opening the next file
|
// and cleanup the previous source and dest once the source has drained.
|
if (_this10.rotatedWhileOpening) {
|
_this10._stream = new PassThrough();
|
_this10._stream.setMaxListeners(30);
|
_this10._rotateFile();
|
_this10.rotatedWhileOpening = false;
|
_this10._cleanupStream(dest);
|
source.end();
|
}
|
});
|
debug('create stream ok', fullpath);
|
return dest;
|
}
|
|
/**
|
* TODO: add method description.
|
* @param {function} callback - TODO: add param description.
|
* @returns {undefined}
|
*/
|
}, {
|
key: "_incFile",
|
value: function _incFile(callback) {
|
debug('_incFile', this.filename);
|
var ext = path.extname(this._basename);
|
var basename = path.basename(this._basename, ext);
|
var tasks = [];
|
if (this.zippedArchive) {
|
tasks.push(function (cb) {
|
var num = this._created > 0 && !this.tailable ? this._created : '';
|
this._compressFile(path.join(this.dirname, "".concat(basename).concat(num).concat(ext)), path.join(this.dirname, "".concat(basename).concat(num).concat(ext, ".gz")), cb);
|
}.bind(this));
|
}
|
tasks.push(function (cb) {
|
if (!this.tailable) {
|
this._created += 1;
|
this._checkMaxFilesIncrementing(ext, basename, cb);
|
} else {
|
this._checkMaxFilesTailable(ext, basename, cb);
|
}
|
}.bind(this));
|
asyncSeries(tasks, callback);
|
}
|
|
/**
|
* Gets the next filename to use for this instance in the case that log
|
* filesizes are being capped.
|
* @returns {string} - TODO: add return description.
|
* @private
|
*/
|
}, {
|
key: "_getFile",
|
value: function _getFile() {
|
var ext = path.extname(this._basename);
|
var basename = path.basename(this._basename, ext);
|
var isRotation = this.rotationFormat ? this.rotationFormat() : this._created;
|
|
// Caveat emptor (indexzero): rotationFormat() was broken by design When
|
// combined with max files because the set of files to unlink is never
|
// stored.
|
return !this.tailable && this._created ? "".concat(basename).concat(isRotation).concat(ext) : "".concat(basename).concat(ext);
|
}
|
|
/**
|
* Increment the number of files created or checked by this instance.
|
* @param {mixed} ext - TODO: add param description.
|
* @param {mixed} basename - TODO: add param description.
|
* @param {mixed} callback - TODO: add param description.
|
* @returns {undefined}
|
* @private
|
*/
|
}, {
|
key: "_checkMaxFilesIncrementing",
|
value: function _checkMaxFilesIncrementing(ext, basename, callback) {
|
// Check for maxFiles option and delete file.
|
if (!this.maxFiles || this._created < this.maxFiles) {
|
return setImmediate(callback);
|
}
|
var oldest = this._created - this.maxFiles;
|
var isOldest = oldest !== 0 ? oldest : '';
|
var isZipped = this.zippedArchive ? '.gz' : '';
|
var filePath = "".concat(basename).concat(isOldest).concat(ext).concat(isZipped);
|
var target = path.join(this.dirname, filePath);
|
fs.unlink(target, callback);
|
}
|
|
/**
|
* Roll files forward based on integer, up to maxFiles. e.g. if base if
|
* file.log and it becomes oversized, roll to file1.log, and allow file.log
|
* to be re-used. If file is oversized again, roll file1.log to file2.log,
|
* roll file.log to file1.log, and so on.
|
* @param {mixed} ext - TODO: add param description.
|
* @param {mixed} basename - TODO: add param description.
|
* @param {mixed} callback - TODO: add param description.
|
* @returns {undefined}
|
* @private
|
*/
|
}, {
|
key: "_checkMaxFilesTailable",
|
value: function _checkMaxFilesTailable(ext, basename, callback) {
|
var _this12 = this;
|
var tasks = [];
|
if (!this.maxFiles) {
|
return;
|
}
|
|
// const isZipped = this.zippedArchive ? '.gz' : '';
|
var isZipped = this.zippedArchive ? '.gz' : '';
|
for (var x = this.maxFiles - 1; x > 1; x--) {
|
tasks.push(function (i, cb) {
|
var _this11 = this;
|
var fileName = "".concat(basename).concat(i - 1).concat(ext).concat(isZipped);
|
var tmppath = path.join(this.dirname, fileName);
|
fs.exists(tmppath, function (exists) {
|
if (!exists) {
|
return cb(null);
|
}
|
fileName = "".concat(basename).concat(i).concat(ext).concat(isZipped);
|
fs.rename(tmppath, path.join(_this11.dirname, fileName), cb);
|
});
|
}.bind(this, x));
|
}
|
asyncSeries(tasks, function () {
|
fs.rename(path.join(_this12.dirname, "".concat(basename).concat(ext).concat(isZipped)), path.join(_this12.dirname, "".concat(basename, "1").concat(ext).concat(isZipped)), callback);
|
});
|
}
|
|
/**
|
* Compresses src to dest with gzip and unlinks src
|
* @param {string} src - path to source file.
|
* @param {string} dest - path to zipped destination file.
|
* @param {Function} callback - callback called after file has been compressed.
|
* @returns {undefined}
|
* @private
|
*/
|
}, {
|
key: "_compressFile",
|
value: function _compressFile(src, dest, callback) {
|
fs.access(src, fs.F_OK, function (err) {
|
if (err) {
|
return callback();
|
}
|
var gzip = zlib.createGzip();
|
var inp = fs.createReadStream(src);
|
var out = fs.createWriteStream(dest);
|
out.on('finish', function () {
|
fs.unlink(src, callback);
|
});
|
inp.pipe(gzip).pipe(out);
|
});
|
}
|
}, {
|
key: "_createLogDirIfNotExist",
|
value: function _createLogDirIfNotExist(dirPath) {
|
/* eslint-disable no-sync */
|
if (!fs.existsSync(dirPath)) {
|
fs.mkdirSync(dirPath, {
|
recursive: true
|
});
|
}
|
/* eslint-enable no-sync */
|
}
|
}]);
|
}(TransportStream);
|
