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738 lines
22 KiB
738 lines
22 KiB
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*jsl:option explicit*/
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/**
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* @fileoverview log4js is a library to log in JavaScript in similar manner
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* than in log4j for Java. The API should be nearly the same.
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*
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* This file contains all log4js code and is the only file required for logging.
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*
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* <h3>Example:</h3>
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* <pre>
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* var logging = require('log4js-node')();
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* //add an appender that logs all messages to stdout.
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* logging.addAppender(logging.consoleAppender());
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* //add an appender that logs "some-category" to a file
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* logging.addAppender(logging.fileAppender("file.log"), "some-category");
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* //get a logger
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* var log = logging.getLogger("some-category");
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* log.setLevel(logging.levels.TRACE); //set the Level
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*
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* ...
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*
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* //call the log
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* log.trace("trace me" );
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* </pre>
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*
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* @version 1.0
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* @author Stephan Strittmatter - http://jroller.com/page/stritti
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* @author Seth Chisamore - http://www.chisamore.com
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* @since 2005-05-20
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* @static
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* Website: http://log4js.berlios.de
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*/
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var events = require('events'),
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path = require('path'),
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sys = require('sys'),
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DEFAULT_CATEGORY = '[default]',
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ALL_CATEGORIES = '[all]',
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appenders = {},
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loggers = {},
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levels = {
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ALL: new Level(Number.MIN_VALUE, "ALL", "grey"),
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TRACE: new Level(5000, "TRACE", "blue"),
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DEBUG: new Level(10000, "DEBUG", "cyan"),
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INFO: new Level(20000, "INFO", "green"),
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WARN: new Level(30000, "WARN", "yellow"),
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ERROR: new Level(40000, "ERROR", "red"),
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FATAL: new Level(50000, "FATAL", "magenta"),
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OFF: new Level(Number.MAX_VALUE, "OFF", "grey")
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},
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appenderMakers = {
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"file": function(config, fileAppender) {
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var layout;
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if (config.layout) {
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layout = layoutMakers[config.layout.type](config.layout);
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}
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return fileAppender(config.filename, layout, config.maxLogSize, config.backups, config.pollInterval);
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},
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"console": function(config, fileAppender, consoleAppender) {
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var layout;
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if (config.layout) {
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layout = layoutMakers[config.layout.type](config.layout);
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}
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return consoleAppender(layout);
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},
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"logLevelFilter": function(config, fileAppender, consoleAppender) {
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var appender = appenderMakers[config.appender.type](config.appender, fileAppender, consoleAppender);
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return logLevelFilter(config.level, appender);
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}
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},
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layoutMakers = {
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"messagePassThrough": function() { return messagePassThroughLayout; },
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"basic": function() { return basicLayout; },
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"colored": function() { return colouredLayout; },
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"coloured": function() { return colouredLayout; },
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"pattern": function (config) {
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var pattern = config.pattern || undefined;
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return patternLayout(pattern);
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}
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};
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/**
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* Get a logger instance. Instance is cached on categoryName level.
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* @param {String} categoryName name of category to log to.
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* @return {Logger} instance of logger for the category
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* @static
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*/
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function getLogger (categoryName) {
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// Use default logger if categoryName is not specified or invalid
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if (!(typeof categoryName == "string")) {
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categoryName = DEFAULT_CATEGORY;
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}
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var appenderList;
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if (!loggers[categoryName]) {
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// Create the logger for this name if it doesn't already exist
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loggers[categoryName] = new Logger(categoryName);
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if (appenders[categoryName]) {
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appenderList = appenders[categoryName];
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appenderList.forEach(function(appender) {
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loggers[categoryName].addListener("log", appender);
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});
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}
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if (appenders[ALL_CATEGORIES]) {
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appenderList = appenders[ALL_CATEGORIES];
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appenderList.forEach(function(appender) {
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loggers[categoryName].addListener("log", appender);
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});
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}
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}
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return loggers[categoryName];
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}
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/**
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* args are appender, then zero or more categories
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*/
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function addAppender () {
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var args = Array.prototype.slice.call(arguments);
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var appender = args.shift();
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if (args.length == 0 || args[0] === undefined) {
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args = [ ALL_CATEGORIES ];
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}
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//argument may already be an array
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if (Array.isArray(args[0])) {
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args = args[0];
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}
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args.forEach(function(category) {
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if (!appenders[category]) {
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appenders[category] = [];
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}
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appenders[category].push(appender);
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if (category === ALL_CATEGORIES) {
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for (var logger in loggers) {
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if (loggers.hasOwnProperty(logger)) {
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loggers[logger].addListener("log", appender);
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}
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}
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} else if (loggers[category]) {
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loggers[category].addListener("log", appender);
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}
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});
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appenders.count = appenders.count ? appenders.count++ : 1;
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}
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function clearAppenders () {
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appenders = {};
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for (var logger in loggers) {
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if (loggers.hasOwnProperty(logger)) {
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loggers[logger].removeAllListeners("log");
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}
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}
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}
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function configureAppenders(appenderList, fileAppender, consoleAppender) {
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clearAppenders();
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if (appenderList) {
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appenderList.forEach(function(appenderConfig) {
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var appender = appenderMakers[appenderConfig.type](appenderConfig, fileAppender, consoleAppender);
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if (appender) {
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addAppender(appender, appenderConfig.category);
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} else {
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throw new Error("log4js configuration problem for "+sys.inspect(appenderConfig));
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}
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});
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} else {
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addAppender(consoleAppender);
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}
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}
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function configureLevels(levels) {
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if (levels) {
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for (var category in levels) {
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if (levels.hasOwnProperty(category)) {
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getLogger(category).setLevel(levels[category]);
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}
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}
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}
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}
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function Level(level, levelStr, colour) {
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this.level = level;
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this.levelStr = levelStr;
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this.colour = colour;
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}
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/**
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* converts given String to corresponding Level
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* @param {String} sArg String value of Level
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* @param {Log4js.Level} defaultLevel default Level, if no String representation
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* @return Level object
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* @type Log4js.Level
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*/
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Level.toLevel = function(sArg, defaultLevel) {
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if (sArg === null) {
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return defaultLevel;
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}
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if (typeof sArg == "string") {
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var s = sArg.toUpperCase();
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if (levels[s]) {
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return levels[s];
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}
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}
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return defaultLevel;
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};
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Level.prototype.toString = function() {
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return this.levelStr;
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};
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Level.prototype.isLessThanOrEqualTo = function(otherLevel) {
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return this.level <= otherLevel.level;
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};
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Level.prototype.isGreaterThanOrEqualTo = function(otherLevel) {
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return this.level >= otherLevel.level;
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};
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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 {String} message message 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, message, exception, logger) {
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this.startTime = new Date();
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this.categoryName = categoryName;
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this.message = message;
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this.level = level;
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this.logger = logger;
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if (exception && exception.message && exception.name) {
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this.exception = exception;
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} else if (exception) {
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this.exception = new Error(sys.inspect(exception));
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}
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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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this.level = Level.toLevel(level, levels.TRACE);
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}
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sys.inherits(Logger, events.EventEmitter);
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Logger.prototype.setLevel = function(level) {
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this.level = Level.toLevel(level, levels.TRACE);
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};
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Logger.prototype.log = function(logLevel, message, exception) {
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var loggingEvent = new LoggingEvent(this.category, logLevel, message, exception, this);
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this.emit("log", loggingEvent);
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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'].forEach(
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function(levelString) {
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var level = Level.toLevel(levelString);
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Logger.prototype['is'+levelString+'Enabled'] = function() {
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return this.isLevelEnabled(level);
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};
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Logger.prototype[levelString.toLowerCase()] = function (message, exception) {
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if (this.isLevelEnabled(level)) {
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this.log(level, message, exception);
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}
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};
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}
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);
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/**
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* Get the default logger instance.
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* @return {Logger} instance of default logger
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* @static
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*/
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function getDefaultLogger () {
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return getLogger(DEFAULT_CATEGORY);
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}
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function logLevelFilter (levelString, appender) {
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var level = Level.toLevel(levelString);
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return function(logEvent) {
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if (logEvent.level.isGreaterThanOrEqualTo(level)) {
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appender(logEvent);
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}
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}
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}
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/**
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* BasicLayout is a simple layout for storing the logs. The logs are stored
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* in following format:
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* <pre>
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* [startTime] [logLevel] categoryName - message\n
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* </pre>
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*
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* @author Stephan Strittmatter
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*/
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function basicLayout (loggingEvent) {
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var timestampLevelAndCategory = '[' + loggingEvent.startTime.toFormattedString() + '] ';
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timestampLevelAndCategory += '[' + loggingEvent.level.toString() + '] ';
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timestampLevelAndCategory += loggingEvent.categoryName + ' - ';
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var output = timestampLevelAndCategory + loggingEvent.message;
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if (loggingEvent.exception) {
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output += '\n'
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output += timestampLevelAndCategory;
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if (loggingEvent.exception.stack) {
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output += loggingEvent.exception.stack;
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} else {
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output += loggingEvent.exception.name + ': '+loggingEvent.exception.message;
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}
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}
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return output;
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}
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/**
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* Taken from masylum's fork (https://github.com/masylum/log4js-node)
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*/
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function colorize (str, style) {
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var styles = {
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//styles
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'bold' : [1, 22],
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'italic' : [3, 23],
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'underline' : [4, 24],
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'inverse' : [7, 27],
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//grayscale
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'white' : [37, 39],
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'grey' : [90, 39],
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'black' : [90, 39],
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//colors
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'blue' : [34, 39],
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'cyan' : [36, 39],
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'green' : [32, 39],
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'magenta' : [35, 39],
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'red' : [31, 39],
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'yellow' : [33, 39]
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};
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return '\033[' + styles[style][0] + 'm' + str +
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'\033[' + styles[style][1] + 'm';
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}
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/**
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* colouredLayout - taken from masylum's fork.
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* same as basicLayout, but with colours.
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*/
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function colouredLayout (loggingEvent) {
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var timestampLevelAndCategory = colorize('[' + loggingEvent.startTime.toFormattedString() + '] ', 'grey');
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timestampLevelAndCategory += colorize(
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'[' + loggingEvent.level.toString() + '] ', loggingEvent.level.colour
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);
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timestampLevelAndCategory += colorize(loggingEvent.categoryName + ' - ', 'grey');
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var output = timestampLevelAndCategory + loggingEvent.message;
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if (loggingEvent.exception) {
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output += '\n'
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output += timestampLevelAndCategory;
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if (loggingEvent.exception.stack) {
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output += loggingEvent.exception.stack;
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} else {
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output += loggingEvent.exception.name + ': '+loggingEvent.exception.message;
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}
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}
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return output;
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}
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function messagePassThroughLayout (loggingEvent) {
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return loggingEvent.message;
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}
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/**
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* PatternLayout
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* Takes a pattern string and returns a layout function.
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* @author Stephan Strittmatter
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*/
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function patternLayout (pattern) {
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var TTCC_CONVERSION_PATTERN = "%r %p %c - %m%n";
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var regex = /%(-?[0-9]+)?(\.?[0-9]+)?([cdmnpr%])(\{([^\}]+)\})?|([^%]+)/;
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pattern = pattern || patternLayout.TTCC_CONVERSION_PATTERN;
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return function(loggingEvent) {
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var formattedString = "";
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var result;
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var searchString = this.pattern;
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while ((result = regex.exec(searchString))) {
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var matchedString = result[0];
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var padding = result[1];
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var truncation = result[2];
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var conversionCharacter = result[3];
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var specifier = result[5];
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var text = result[6];
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// Check if the pattern matched was just normal text
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if (text) {
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formattedString += "" + text;
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} else {
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// Create a raw replacement string based on the conversion
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// character and specifier
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var replacement = "";
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switch(conversionCharacter) {
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case "c":
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var loggerName = loggingEvent.categoryName;
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if (specifier) {
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var precision = parseInt(specifier, 10);
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var loggerNameBits = loggingEvent.categoryName.split(".");
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if (precision >= loggerNameBits.length) {
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replacement = loggerName;
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} else {
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replacement = loggerNameBits.slice(loggerNameBits.length - precision).join(".");
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}
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} else {
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replacement = loggerName;
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}
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break;
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case "d":
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var dateFormat = Date.ISO8601_FORMAT;
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if (specifier) {
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dateFormat = specifier;
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// Pick up special cases
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if (dateFormat == "ISO8601") {
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dateFormat = Date.ISO8601_FORMAT;
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} else if (dateFormat == "ABSOLUTE") {
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dateFormat = Date.ABSOLUTETIME_FORMAT;
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} else if (dateFormat == "DATE") {
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dateFormat = Date.DATETIME_FORMAT;
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}
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}
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// Format the date
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replacement = loggingEvent.startTime.toFormattedString(dateFormat);
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break;
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case "m":
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replacement = loggingEvent.message;
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break;
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case "n":
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replacement = "\n";
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break;
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case "p":
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replacement = loggingEvent.level.toString();
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break;
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case "r":
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replacement = "" + loggingEvent.startTime.toLocaleTimeString();
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break;
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case "%":
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replacement = "%";
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break;
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default:
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replacement = matchedString;
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break;
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}
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// Format the replacement according to any padding or
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|
// truncation specified
|
|
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var len;
|
|
|
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// First, truncation
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if (truncation) {
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len = parseInt(truncation.substr(1), 10);
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replacement = replacement.substring(0, len);
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}
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// Next, padding
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|
if (padding) {
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if (padding.charAt(0) == "-") {
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len = parseInt(padding.substr(1), 10);
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|
// Right pad with spaces
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|
while (replacement.length < len) {
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replacement += " ";
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|
}
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} else {
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len = parseInt(padding, 10);
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|
// Left pad with spaces
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|
while (replacement.length < len) {
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replacement = " " + replacement;
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}
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}
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}
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formattedString += replacement;
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}
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searchString = searchString.substr(result.index + result[0].length);
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}
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return formattedString;
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};
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};
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|
|
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module.exports = function (fileSystem, standardOutput, configPaths) {
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|
var fs = fileSystem || require('fs'),
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|
standardOutput = standardOutput || sys.puts,
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|
configPaths = configPaths || require.paths;
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|
|
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function consoleAppender (layout) {
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|
layout = layout || colouredLayout;
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|
return function(loggingEvent) {
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standardOutput(layout(loggingEvent));
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};
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|
}
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|
|
|
/**
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|
* File Appender writing the logs to a text file. Supports rolling of logs by size.
|
|
*
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|
* @param file file log messages will be written to
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|
* @param layout a function that takes a logevent and returns a string (defaults to basicLayout).
|
|
* @param logSize - the maximum size (in bytes) for a log file, if not provided then logs won't be rotated.
|
|
* @param numBackups - the number of log files to keep after logSize has been reached (default 5)
|
|
* @param filePollInterval - the time in seconds between file size checks (default 30s)
|
|
*/
|
|
function fileAppender (file, layout, logSize, numBackups, filePollInterval) {
|
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layout = layout || basicLayout;
|
|
//syncs are generally bad, but we need
|
|
//the file to be open before we start doing any writing.
|
|
var logFile = fs.openSync(file, 'a', 0644);
|
|
|
|
if (logSize > 0) {
|
|
setupLogRolling(logFile, file, logSize, numBackups || 5, (filePollInterval * 1000) || 30000);
|
|
}
|
|
|
|
return function(loggingEvent) {
|
|
fs.write(logFile, layout(loggingEvent)+'\n', null, "utf8");
|
|
};
|
|
}
|
|
|
|
function setupLogRolling (logFile, filename, logSize, numBackups, filePollInterval) {
|
|
fs.watchFile(filename,
|
|
{
|
|
persistent: false,
|
|
interval: filePollInterval
|
|
},
|
|
function (curr, prev) {
|
|
if (curr.size >= logSize) {
|
|
rollThatLog(logFile, filename, numBackups);
|
|
}
|
|
}
|
|
);
|
|
}
|
|
|
|
function rollThatLog (logFile, filename, numBackups) {
|
|
//doing all of this fs stuff sync, because I don't want to lose any log events.
|
|
//first close the current one.
|
|
fs.closeSync(logFile);
|
|
//roll the backups (rename file.n-1 to file.n, where n <= numBackups)
|
|
for (var i=numBackups; i > 0; i--) {
|
|
if (i > 1) {
|
|
if (fileExists(filename + '.' + (i-1))) {
|
|
fs.renameSync(filename+'.'+(i-1), filename+'.'+i);
|
|
}
|
|
} else {
|
|
fs.renameSync(filename, filename+'.1');
|
|
}
|
|
}
|
|
//open it up again
|
|
logFile = fs.openSync(filename, 'a', 0644);
|
|
}
|
|
|
|
function fileExists (filename) {
|
|
try {
|
|
fs.statSync(filename);
|
|
return true;
|
|
} catch (e) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
function configure (configurationFileOrObject) {
|
|
var config = configurationFileOrObject;
|
|
if (typeof(config) === "string") {
|
|
config = JSON.parse(fs.readFileSync(config, "utf8"));
|
|
}
|
|
if (config) {
|
|
try {
|
|
configureAppenders(config.appenders, fileAppender, consoleAppender);
|
|
configureLevels(config.levels);
|
|
} catch (e) {
|
|
throw new Error("Problem reading log4js config " + sys.inspect(config) + ". Error was \"" + e.message + "\" ("+e.stack+")");
|
|
}
|
|
}
|
|
}
|
|
|
|
function findConfiguration() {
|
|
//add current directory onto the list of configPaths
|
|
var paths = ['.'].concat(configPaths);
|
|
//add this module's directory to the end of the list, so that we pick up the default config
|
|
paths.push(__dirname);
|
|
var pathsWithConfig = paths.filter( function (pathToCheck) {
|
|
try {
|
|
fs.statSync(path.join(pathToCheck, "log4js.json"));
|
|
return true;
|
|
} catch (e) {
|
|
return false;
|
|
}
|
|
});
|
|
if (pathsWithConfig.length > 0) {
|
|
return path.join(pathsWithConfig[0], 'log4js.json');
|
|
}
|
|
return undefined;
|
|
}
|
|
|
|
function replaceConsole(logger) {
|
|
function replaceWith (fn) {
|
|
return function() {
|
|
fn.apply(logger, arguments);
|
|
}
|
|
}
|
|
|
|
console.log = replaceWith(logger.info);
|
|
console.debug = replaceWith(logger.debug);
|
|
console.trace = replaceWith(logger.trace);
|
|
console.info = replaceWith(logger.info);
|
|
console.warn = replaceWith(logger.warn);
|
|
console.error = replaceWith(logger.error);
|
|
|
|
}
|
|
|
|
//do we already have appenders?
|
|
if (!appenders.count) {
|
|
//set ourselves up if we can find a default log4js.json
|
|
configure(findConfiguration());
|
|
//replace console.log, etc with log4js versions
|
|
//disabling this (17/04/11 - GJ), as console.log does fancy formatting that this breaks
|
|
//replaceConsole(getLogger("console"));
|
|
}
|
|
|
|
var thismodule = {
|
|
getLogger: getLogger,
|
|
getDefaultLogger: getDefaultLogger,
|
|
|
|
addAppender: addAppender,
|
|
clearAppenders: clearAppenders,
|
|
configure: configure,
|
|
|
|
levels: levels,
|
|
|
|
consoleAppender: consoleAppender,
|
|
fileAppender: fileAppender,
|
|
logLevelFilter: logLevelFilter,
|
|
|
|
basicLayout: basicLayout,
|
|
messagePassThroughLayout: messagePassThroughLayout,
|
|
patternLayout: patternLayout,
|
|
colouredLayout: colouredLayout,
|
|
coloredLayout: colouredLayout,
|
|
};
|
|
thismodule.connectLogger = require('./connect-logger')(thismodule).connectLogger;
|
|
|
|
return thismodule;
|
|
}
|
|
|
|
|
|
Date.ISO8601_FORMAT = "yyyy-MM-dd hh:mm:ss.SSS";
|
|
Date.ISO8601_WITH_TZ_OFFSET_FORMAT = "yyyy-MM-ddThh:mm:ssO";
|
|
Date.DATETIME_FORMAT = "dd MMM YYYY hh:mm:ss.SSS";
|
|
Date.ABSOLUTETIME_FORMAT = "hh:mm:ss.SSS";
|
|
|
|
Date.prototype.toFormattedString = function(format) {
|
|
format = format || Date.ISO8601_FORMAT;
|
|
|
|
var vDay = addZero(this.getDate());
|
|
var vMonth = addZero(this.getMonth()+1);
|
|
var vYearLong = addZero(this.getFullYear());
|
|
var vYearShort = addZero(this.getFullYear().toString().substring(3,4));
|
|
var vYear = (format.indexOf("yyyy") > -1 ? vYearLong : vYearShort);
|
|
var vHour = addZero(this.getHours());
|
|
var vMinute = addZero(this.getMinutes());
|
|
var vSecond = addZero(this.getSeconds());
|
|
var vMillisecond = padWithZeros(this.getMilliseconds(), 3);
|
|
var vTimeZone = offset(this);
|
|
var formatted = format
|
|
.replace(/dd/g, vDay)
|
|
.replace(/MM/g, vMonth)
|
|
.replace(/y{1,4}/g, vYear)
|
|
.replace(/hh/g, vHour)
|
|
.replace(/mm/g, vMinute)
|
|
.replace(/ss/g, vSecond)
|
|
.replace(/SSS/g, vMillisecond)
|
|
.replace(/O/g, vTimeZone);
|
|
return formatted;
|
|
|
|
function padWithZeros(vNumber, width) {
|
|
var numAsString = vNumber + "";
|
|
while (numAsString.length < width) {
|
|
numAsString = "0" + numAsString;
|
|
}
|
|
return numAsString;
|
|
}
|
|
|
|
function addZero(vNumber) {
|
|
return padWithZeros(vNumber, 2);
|
|
}
|
|
|
|
/**
|
|
* Formats the TimeOffest
|
|
* Thanks to http://www.svendtofte.com/code/date_format/
|
|
* @private
|
|
*/
|
|
function offset(date) {
|
|
// Difference to Greenwich time (GMT) in hours
|
|
var os = Math.abs(date.getTimezoneOffset());
|
|
var h = String(Math.floor(os/60));
|
|
var m = String(os%60);
|
|
h.length == 1? h = "0"+h:1;
|
|
m.length == 1? m = "0"+m:1;
|
|
return date.getTimezoneOffset() < 0 ? "+"+h+m : "-"+h+m;
|
|
}
|
|
};
|
|
|