120 lines
3.0 KiB
JavaScript
120 lines
3.0 KiB
JavaScript
"use strict";
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var levels = require('./levels')
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, util = require('util')
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, events = require('events')
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, DEFAULT_CATEGORY = '[default]';
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var logWritesEnabled = true;
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/**
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* Models a logging event.
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* @constructor
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* @param {String} categoryName name of category
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* @param {Log4js.Level} level level of message
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* @param {Array} data objects to log
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* @param {Log4js.Logger} logger the associated logger
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* @author Seth Chisamore
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*/
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function LoggingEvent (categoryName, level, data, logger) {
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this.startTime = new Date();
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this.categoryName = categoryName;
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this.data = data;
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this.level = level;
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this.logger = logger;
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}
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/**
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* Logger to log messages.
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* use {@see Log4js#getLogger(String)} to get an instance.
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* @constructor
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* @param name name of category to log to
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* @author Stephan Strittmatter
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*/
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function Logger (name, level) {
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this.category = name || DEFAULT_CATEGORY;
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if (level) {
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this.setLevel(level);
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}
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}
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util.inherits(Logger, events.EventEmitter);
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Logger.DEFAULT_CATEGORY = DEFAULT_CATEGORY;
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Logger.prototype.level = levels.TRACE;
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Logger.prototype.setLevel = function(level) {
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this.level = levels.toLevel(level, this.level || levels.TRACE);
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};
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Logger.prototype.removeLevel = function() {
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delete this.level;
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};
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Logger.prototype.log = function() {
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var logLevel = levels.toLevel(arguments[0], levels.INFO);
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if (!this.isLevelEnabled(logLevel)) {
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return;
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}
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var numArgs = arguments.length - 1;
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var args = new Array(numArgs);
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for (var i = 0; i < numArgs; i++) {
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args[i] = arguments[i + 1];
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}
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this._log(logLevel, args);
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};
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Logger.prototype.isLevelEnabled = function(otherLevel) {
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return this.level.isLessThanOrEqualTo(otherLevel);
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};
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['Trace','Debug','Info','Warn','Error','Fatal', 'Mark'].forEach(addLevelMethods);
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function addLevelMethods(level) {
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level = levels.toLevel(level);
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var levelStrLower = level.toString().toLowerCase();
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var levelMethod = levelStrLower.replace(/_([a-z])/g, function(g) { return g[1].toUpperCase(); } );
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var isLevelMethod = levelMethod[0].toUpperCase() + levelMethod.slice(1);
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Logger.prototype['is'+isLevelMethod+'Enabled'] = function() {
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return this.isLevelEnabled(level);
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};
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Logger.prototype[levelMethod] = function () {
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if (logWritesEnabled && this.isLevelEnabled(level)) {
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var numArgs = arguments.length;
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var args = new Array(numArgs);
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for (var i = 0; i < numArgs; i++) {
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args[i] = arguments[i];
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}
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this._log(level, args);
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}
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};
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}
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Logger.prototype._log = function(level, data) {
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var loggingEvent = new LoggingEvent(this.category, level, data, this);
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this.emit('log', loggingEvent);
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};
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/**
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* Disable all log writes.
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* @returns {void}
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*/
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function disableAllLogWrites() {
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logWritesEnabled = false;
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}
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/**
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* Enable log writes.
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* @returns {void}
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*/
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function enableAllLogWrites() {
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logWritesEnabled = true;
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}
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exports.LoggingEvent = LoggingEvent;
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exports.Logger = Logger;
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exports.disableAllLogWrites = disableAllLogWrites;
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exports.enableAllLogWrites = enableAllLogWrites;
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exports.addLevelMethods = addLevelMethods;
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