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| Viewing file: Select action/file-type: /**
* logger.js: TODO: add file header description.
*
* (C) 2010 Charlie Robbins
* MIT LICENCE
*/
'use strict';
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
var _require = require('readable-stream'),
Stream = _require.Stream,
Transform = _require.Transform;
var asyncForEach = require('async/forEach');
var _require2 = require('triple-beam'),
LEVEL = _require2.LEVEL,
SPLAT = _require2.SPLAT;
var isStream = require('is-stream');
var ExceptionHandler = require('./exception-handler');
var RejectionHandler = require('./rejection-handler');
var LegacyTransportStream = require('winston-transport/legacy');
var Profiler = require('./profiler');
var _require3 = require('./common'),
warn = _require3.warn;
var config = require('./config');
/**
* Captures the number of format (i.e. %s strings) in a given string.
* Based on `util.format`, see Node.js source:
* https://github.com/nodejs/node/blob/b1c8f15c5f169e021f7c46eb7b219de95fe97603/lib/util.js#L201-L230
* @type {RegExp}
*/
var formatRegExp = /%[scdjifoO%]/g;
/**
* TODO: add class description.
* @type {Logger}
* @extends {Transform}
*/
var Logger = /*#__PURE__*/function (_Transform) {
_inherits(Logger, _Transform);
var _super = _createSuper(Logger);
/**
* Constructor function for the Logger object responsible for persisting log
* messages and metadata to one or more transports.
* @param {!Object} options - foo
*/
function Logger(options) {
var _this;
_classCallCheck(this, Logger);
_this = _super.call(this, {
objectMode: true
});
_this.configure(options);
return _this;
}
_createClass(Logger, [{
key: "child",
value: function child(defaultRequestMetadata) {
var logger = this;
return Object.create(logger, {
write: {
value: function value(info) {
var infoClone = Object.assign({}, defaultRequestMetadata, info); // Object.assign doesn't copy inherited Error
// properties so we have to do that explicitly
//
// Remark (indexzero): we should remove this
// since the errors format will handle this case.
//
if (info instanceof Error) {
infoClone.stack = info.stack;
infoClone.message = info.message;
}
logger.write(infoClone);
}
}
});
}
/**
* This will wholesale reconfigure this instance by:
* 1. Resetting all transports. Older transports will be removed implicitly.
* 2. Set all other options including levels, colors, rewriters, filters,
* exceptionHandlers, etc.
* @param {!Object} options - TODO: add param description.
* @returns {undefined}
*/
}, {
key: "configure",
value: function configure() {
var _this2 = this;
var _ref = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
silent = _ref.silent,
format = _ref.format,
defaultMeta = _ref.defaultMeta,
levels = _ref.levels,
_ref$level = _ref.level,
level = _ref$level === void 0 ? 'info' : _ref$level,
_ref$exitOnError = _ref.exitOnError,
exitOnError = _ref$exitOnError === void 0 ? true : _ref$exitOnError,
transports = _ref.transports,
colors = _ref.colors,
emitErrs = _ref.emitErrs,
formatters = _ref.formatters,
padLevels = _ref.padLevels,
rewriters = _ref.rewriters,
stripColors = _ref.stripColors,
exceptionHandlers = _ref.exceptionHandlers,
rejectionHandlers = _ref.rejectionHandlers;
// Reset transports if we already have them
if (this.transports.length) {
this.clear();
}
this.silent = silent;
this.format = format || this.format || require('logform/json')();
this.defaultMeta = defaultMeta || null; // Hoist other options onto this instance.
this.levels = levels || this.levels || config.npm.levels;
this.level = level;
this.exceptions = new ExceptionHandler(this);
this.rejections = new RejectionHandler(this);
this.profilers = {};
this.exitOnError = exitOnError; // Add all transports we have been provided.
if (transports) {
transports = Array.isArray(transports) ? transports : [transports];
transports.forEach(function (transport) {
return _this2.add(transport);
});
}
if (colors || emitErrs || formatters || padLevels || rewriters || stripColors) {
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'));
}
if (exceptionHandlers) {
this.exceptions.handle(exceptionHandlers);
}
if (rejectionHandlers) {
this.rejections.handle(rejectionHandlers);
}
}
}, {
key: "isLevelEnabled",
value: function isLevelEnabled(level) {
var _this3 = this;
var givenLevelValue = getLevelValue(this.levels, level);
if (givenLevelValue === null) {
return false;
}
var configuredLevelValue = getLevelValue(this.levels, this.level);
if (configuredLevelValue === null) {
return false;
}
if (!this.transports || this.transports.length === 0) {
return configuredLevelValue >= givenLevelValue;
}
var index = this.transports.findIndex(function (transport) {
var transportLevelValue = getLevelValue(_this3.levels, transport.level);
if (transportLevelValue === null) {
transportLevelValue = configuredLevelValue;
}
return transportLevelValue >= givenLevelValue;
});
return index !== -1;
}
/* eslint-disable valid-jsdoc */
/**
* Ensure backwards compatibility with a `log` method
* @param {mixed} level - Level the log message is written at.
* @param {mixed} msg - TODO: add param description.
* @param {mixed} meta - TODO: add param description.
* @returns {Logger} - TODO: add return description.
*
* @example
* // Supports the existing API:
* logger.log('info', 'Hello world', { custom: true });
* logger.log('info', new Error('Yo, it\'s on fire'));
*
* // Requires winston.format.splat()
* logger.log('info', '%s %d%%', 'A string', 50, { thisIsMeta: true });
*
* // And the new API with a single JSON literal:
* logger.log({ level: 'info', message: 'Hello world', custom: true });
* logger.log({ level: 'info', message: new Error('Yo, it\'s on fire') });
*
* // Also requires winston.format.splat()
* logger.log({
* level: 'info',
* message: '%s %d%%',
* [SPLAT]: ['A string', 50],
* meta: { thisIsMeta: true }
* });
*
*/
/* eslint-enable valid-jsdoc */
}, {
key: "log",
value: function log(level, msg) {
var _Object$assign2;
for (var _len = arguments.length, splat = new Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
splat[_key - 2] = arguments[_key];
}
// eslint-disable-line max-params
// Optimize for the hotpath of logging JSON literals
if (arguments.length === 1) {
// Yo dawg, I heard you like levels ... seriously ...
// In this context the LHS `level` here is actually the `info` so read
// this as: info[LEVEL] = info.level;
level[LEVEL] = level.level;
this._addDefaultMeta(level);
this.write(level);
return this;
} // Slightly less hotpath, but worth optimizing for.
if (arguments.length === 2) {
var _this$write;
if (msg && _typeof(msg) === 'object') {
msg[LEVEL] = msg.level = level;
this._addDefaultMeta(msg);
this.write(msg);
return this;
}
this.write((_this$write = {}, _defineProperty(_this$write, LEVEL, level), _defineProperty(_this$write, "level", level), _defineProperty(_this$write, "message", msg), _this$write));
return this;
}
var meta = splat[0];
if (_typeof(meta) === 'object' && meta !== null) {
// Extract tokens, if none available default to empty array to
// ensure consistancy in expected results
var tokens = msg && msg.match && msg.match(formatRegExp);
if (!tokens) {
var _Object$assign;
var info = Object.assign({}, this.defaultMeta, meta, (_Object$assign = {}, _defineProperty(_Object$assign, LEVEL, level), _defineProperty(_Object$assign, SPLAT, splat), _defineProperty(_Object$assign, "level", level), _defineProperty(_Object$assign, "message", msg), _Object$assign));
if (meta.message) info.message = "".concat(info.message, " ").concat(meta.message);
if (meta.stack) info.stack = meta.stack;
this.write(info);
return this;
}
}
this.write(Object.assign({}, this.defaultMeta, (_Object$assign2 = {}, _defineProperty(_Object$assign2, LEVEL, level), _defineProperty(_Object$assign2, SPLAT, splat), _defineProperty(_Object$assign2, "level", level), _defineProperty(_Object$assign2, "message", msg), _Object$assign2)));
return this;
}
/**
* Pushes data so that it can be picked up by all of our pipe targets.
* @param {mixed} info - TODO: add param description.
* @param {mixed} enc - TODO: add param description.
* @param {mixed} callback - Continues stream processing.
* @returns {undefined}
* @private
*/
}, {
key: "_transform",
value: function _transform(info, enc, callback) {
if (this.silent) {
return callback();
} // [LEVEL] is only soft guaranteed to be set here since we are a proper
// stream. It is likely that `info` came in through `.log(info)` or
// `.info(info)`. If it is not defined, however, define it.
// This LEVEL symbol is provided by `triple-beam` and also used in:
// - logform
// - winston-transport
// - abstract-winston-transport
if (!info[LEVEL]) {
info[LEVEL] = info.level;
} // Remark: really not sure what to do here, but this has been reported as
// very confusing by pre winston@2.0.0 users as quite confusing when using
// custom levels.
if (!this.levels[info[LEVEL]] && this.levels[info[LEVEL]] !== 0) {
// eslint-disable-next-line no-console
console.error('[winston] Unknown logger level: %s', info[LEVEL]);
} // Remark: not sure if we should simply error here.
if (!this._readableState.pipes) {
// eslint-disable-next-line no-console
console.error('[winston] Attempt to write logs with no transports %j', info);
} // Here we write to the `format` pipe-chain, which on `readable` above will
// push the formatted `info` Object onto the buffer for this instance. We trap
// (and re-throw) any errors generated by the user-provided format, but also
// guarantee that the streams callback is invoked so that we can continue flowing.
try {
this.push(this.format.transform(info, this.format.options));
} catch (ex) {
throw ex;
} finally {
// eslint-disable-next-line callback-return
callback();
}
}
/**
* Delays the 'finish' event until all transport pipe targets have
* also emitted 'finish' or are already finished.
* @param {mixed} callback - Continues stream processing.
*/
}, {
key: "_final",
value: function _final(callback) {
var transports = this.transports.slice();
asyncForEach(transports, function (transport, next) {
if (!transport || transport.finished) return setImmediate(next);
transport.once('finish', next);
transport.end();
}, callback);
}
/**
* Adds the transport to this logger instance by piping to it.
* @param {mixed} transport - TODO: add param description.
* @returns {Logger} - TODO: add return description.
*/
}, {
key: "add",
value: function add(transport) {
// Support backwards compatibility with all existing `winston < 3.x.x`
// transports which meet one of two criteria:
// 1. They inherit from winston.Transport in < 3.x.x which is NOT a stream.
// 2. They expose a log method which has a length greater than 2 (i.e. more then
// just `log(info, callback)`.
var target = !isStream(transport) || transport.log.length > 2 ? new LegacyTransportStream({
transport: transport
}) : transport;
if (!target._writableState || !target._writableState.objectMode) {
throw new Error('Transports must WritableStreams in objectMode. Set { objectMode: true }.');
} // Listen for the `error` event and the `warn` event on the new Transport.
this._onEvent('error', target);
this._onEvent('warn', target);
this.pipe(target);
if (transport.handleExceptions) {
this.exceptions.handle();
}
if (transport.handleRejections) {
this.rejections.handle();
}
return this;
}
/**
* Removes the transport from this logger instance by unpiping from it.
* @param {mixed} transport - TODO: add param description.
* @returns {Logger} - TODO: add return description.
*/
}, {
key: "remove",
value: function remove(transport) {
if (!transport) return this;
var target = transport;
if (!isStream(transport) || transport.log.length > 2) {
target = this.transports.filter(function (match) {
return match.transport === transport;
})[0];
}
if (target) {
this.unpipe(target);
}
return this;
}
/**
* Removes all transports from this logger instance.
* @returns {Logger} - TODO: add return description.
*/
}, {
key: "clear",
value: function clear() {
this.unpipe();
return this;
}
/**
* Cleans up resources (streams, event listeners) for all transports
* associated with this instance (if necessary).
* @returns {Logger} - TODO: add return description.
*/
}, {
key: "close",
value: function close() {
this.clear();
this.emit('close');
return this;
}
/**
* Sets the `target` levels specified on this instance.
* @param {Object} Target levels to use on this instance.
*/
}, {
key: "setLevels",
value: function setLevels() {
warn.deprecated('setLevels');
}
/**
* Queries the all transports for this instance with the specified `options`.
* This will aggregate each transport's results into one object containing
* a property per transport.
* @param {Object} options - Query options for this instance.
* @param {function} callback - Continuation to respond to when complete.
*/
}, {
key: "query",
value: function query(options, callback) {
if (typeof options === 'function') {
callback = options;
options = {};
}
options = options || {};
var results = {};
var queryObject = Object.assign({}, options.query || {}); // Helper function to query a single transport
function queryTransport(transport, next) {
if (options.query && typeof transport.formatQuery === 'function') {
options.query = transport.formatQuery(queryObject);
}
transport.query(options, function (err, res) {
if (err) {
return next(err);
}
if (typeof transport.formatResults === 'function') {
res = transport.formatResults(res, options.format);
}
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.
if (next) {
result = err || result;
if (result) {
results[transport.name] = result;
} // eslint-disable-next-line callback-return
next();
}
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--) {
streams[i].destroy();
}
}; // Create a list of all transports for this instance.
this.transports.filter(function (transport) {
return !!transport.stream;
}).forEach(function (transport) {
var str = transport.stream(options);
if (!str) {
return;
}
streams.push(str);
str.on('log', function (log) {
log.transport = log.transport || [];
log.transport.push(transport.name);
out.emit('log', log);
});
str.on('error', function (err) {
err.transport = err.transport || [];
err.transport.push(transport.name);
out.emit('error', err);
});
});
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);
}
}
}]);
return Logger;
}(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; |
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