Merge branch 'master' of github.com:csausdev/log4js-node

This commit is contained in:
csausdev 2010-12-06 20:48:24 +11:00
commit 7e7961330d
10 changed files with 1000 additions and 674 deletions

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@ -2,22 +2,30 @@
This is a conversion of the [log4js](http://log4js.berlios.de/index.html)
framework to work with [node](http://nodejs.org). I've mainly stripped out the browser-specific code
and tidied up some of the javascript.
and tidied up some of the javascript. It includes a basic file logger, with log rolling based on file size.
NOTE: since v0.2.0 require('log4js') returns a function, so you need to call that function in your code before you can use it. I've done this to make testing easier (allows dependency injection).
## installation
npm install log4js
## tests
Run the tests with `node tests.js`. They use the awesome [jspec](http://visionmedia.github.com/jspec) - 3.1.3
Tests now use [vows](http://vowsjs.org), run with `vows test/logging.js`. I am slowly porting the previous tests from jspec (run those with `node tests.js`), since jspec is no longer maintained.
## usage
Minimalist version:
var log4js = require('log4js')();
var logger = log4js.getLogger();
logger.debug("Some debug messages");
By default, log4js outputs to stdout with the coloured layout (thanks to [masylum](http://github.com/masylum)), so for the above you would see:
[2010-01-17 11:43:37.987] [DEBUG] [default] - Some debug messages
See example.js:
var log4js = require('log4js');
var log4js = require('log4js')(); //note the need to call the function
log4js.addAppender(log4js.consoleAppender());
log4js.addAppender(log4js.fileAppender('logs/cheese.log'), 'cheese');
@ -39,13 +47,11 @@ Output
## configuration
You can either configure the appenders and log levels manually (as above), or provide a
configuration file (`log4js.configure('path/to/file.json')`). An example file can be found
in spec/fixtures/log4js.json
configuration file (`log4js.configure('path/to/file.json')`) explicitly, or just let log4js look for a file called `log4js.json` (it looks in the current directory first, then the require paths, and finally looks for the default config included in the same directory as the `log4js.js` file).
An example file can be found in `test/log4js.json`. An example config file with log rolling is in `test/with-log-rolling.json`
## todo
I need to make a RollingFileAppender, which will do log rotation.
patternLayout has no tests. This is mainly because I haven't found a use for it yet,
and am not entirely sure what it was supposed to do. It is more-or-less intact from
the original log4js.

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@ -1,4 +1,4 @@
var log4js = require('./lib/log4js');
var log4js = require('./lib/log4js')();
log4js.addAppender(log4js.consoleAppender());
log4js.addAppender(log4js.fileAppender('cheese.log'), 'cheese');

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@ -1,7 +1,3 @@
var fs = require('fs'), sys = require('sys');
var DEFAULT_CATEGORY = '[default]';
var ALL_CATEGORIES = '[all]';
/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -26,7 +22,7 @@ var ALL_CATEGORIES = '[all]';
*
* <h3>Example:</h3>
* <pre>
* var logging = require('log4js-node');
* var logging = require('log4js-node')();
* //add an appender that logs all messages to stdout.
* logging.addAppender(logging.consoleAppender());
* //add an appender that logs "some-category" to a file
@ -48,142 +44,34 @@ var ALL_CATEGORIES = '[all]';
* @static
* Website: http://log4js.berlios.de
*/
var log4js = {
/**
* Current version of log4js-node.
* @static
* @final
*/
version: "0.1.1",
/**
* Date of logger initialized.
* @static
* @final
*/
applicationStartDate: new Date(),
/**
* Hashtable of loggers.
* @static
* @final
* @private
*/
loggers: {},
appenders: {}
};
/**
* Get a logger instance. Instance is cached on categoryName level.
* @param {String} categoryName name of category to log to.
* @return {Logger} instance of logger for the category
* @static
*/
exports.getLogger = log4js.getLogger = function(categoryName) {
// Use default logger if categoryName is not specified or invalid
if (!(typeof categoryName == "string")) {
categoryName = DEFAULT_CATEGORY;
}
var appenderList;
if (!log4js.loggers[categoryName]) {
// Create the logger for this name if it doesn't already exist
log4js.loggers[categoryName] = new Logger(categoryName);
if (log4js.appenders[categoryName]) {
appenderList = log4js.appenders[categoryName];
appenderList.forEach(function(appender) {
log4js.loggers[categoryName].addListener("log", appender);
});
}
if (log4js.appenders[ALL_CATEGORIES]) {
appenderList = log4js.appenders[ALL_CATEGORIES];
appenderList.forEach(function(appender) {
log4js.loggers[categoryName].addListener("log", appender);
});
}
}
return log4js.loggers[categoryName];
};
/**
* Get the default logger instance.
* @return {Logger} instance of default logger
* @static
*/
exports.getDefaultLogger = log4js.getDefaultLogger = function() {
return log4js.getLogger(DEFAULT_CATEGORY);
};
/**
* args are appender, then zero or more categories
*/
exports.addAppender = log4js.addAppender = function () {
var args = Array.prototype.slice.call(arguments);
var appender = args.shift();
if (args.length == 0) {
args = [ ALL_CATEGORIES ];
}
//argument may already be an array
if (args[0].forEach) {
args = args[0];
}
args.forEach(function(category) {
if (!log4js.appenders[category]) {
log4js.appenders[category] = [];
}
log4js.appenders[category].push(appender);
if (category === ALL_CATEGORIES) {
for (var logger in log4js.loggers) {
if (log4js.loggers.hasOwnProperty(logger)) {
log4js.loggers[logger].addListener("log", appender);
}
}
} else if (log4js.loggers[category]) {
log4js.loggers[category].addListener("log", appender);
}
});
};
exports.clearAppenders = log4js.clearAppenders = function() {
log4js.appenders = [];
for (var logger in log4js.loggers) {
if (log4js.loggers.hasOwnProperty(logger)) {
log4js.loggers[logger].removeAllListeners("log");
}
}
};
exports.configure = log4js.configure = function(configurationFile) {
var config = JSON.parse(fs.readFileSync(configurationFile));
configureAppenders(config.appenders);
configureLevels(config.levels);
};
exports.levels = log4js.levels = {
ALL: new Level(Number.MIN_VALUE, "ALL"),
TRACE: new Level(5000, "TRACE"),
DEBUG: new Level(10000, "DEBUG"),
INFO: new Level(20000, "INFO"),
WARN: new Level(30000, "WARN"),
ERROR: new Level(40000, "ERROR"),
FATAL: new Level(50000, "FATAL"),
OFF: new Level(Number.MAX_VALUE, "OFF")
};
var appenderMakers = {
module.exports = function (fileSystem, standardOutput, configPaths) {
var fs = fileSystem || require('fs'),
standardOutput = standardOutput || console.log,
configPaths = configPaths || require.paths,
sys = require('sys'),
events = require('events'),
path = require('path'),
DEFAULT_CATEGORY = '[default]',
ALL_CATEGORIES = '[all]',
loggers = {},
appenders = {},
levels = {
ALL: new Level(Number.MIN_VALUE, "ALL", "grey"),
TRACE: new Level(5000, "TRACE", "blue"),
DEBUG: new Level(10000, "DEBUG", "cyan"),
INFO: new Level(20000, "INFO", "green"),
WARN: new Level(30000, "WARN", "yellow"),
ERROR: new Level(40000, "ERROR", "red"),
FATAL: new Level(50000, "FATAL", "magenta"),
OFF: new Level(Number.MAX_VALUE, "OFF", "grey")
},
appenderMakers = {
"file": function(config) {
var layout;
if (config.layout) {
layout = layoutMakers[config.layout.type](config.layout);
}
return fileAppender(config.filename, layout);
return fileAppender(config.filename, layout, config.maxLogSize, config.backups, config.pollInterval);
},
"console": function(config) {
var layout;
@ -196,9 +84,8 @@ var appenderMakers = {
var appender = appenderMakers[config.appender.type](config.appender);
return logLevelFilter(config.level, appender);
}
};
var layoutMakers = {
},
layoutMakers = {
"messagePassThrough": function() { return messagePassThroughLayout; },
"basic": function() { return basicLayout; },
"pattern": function (config) {
@ -207,19 +94,125 @@ var layoutMakers = {
}
};
/**
* Get a logger instance. Instance is cached on categoryName level.
* @param {String} categoryName name of category to log to.
* @return {Logger} instance of logger for the category
* @static
*/
function getLogger (categoryName) {
// Use default logger if categoryName is not specified or invalid
if (!(typeof categoryName == "string")) {
categoryName = DEFAULT_CATEGORY;
}
var appenderList;
if (!loggers[categoryName]) {
// Create the logger for this name if it doesn't already exist
loggers[categoryName] = new Logger(categoryName);
if (appenders[categoryName]) {
appenderList = appenders[categoryName];
appenderList.forEach(function(appender) {
loggers[categoryName].addListener("log", appender);
});
}
if (appenders[ALL_CATEGORIES]) {
appenderList = appenders[ALL_CATEGORIES];
appenderList.forEach(function(appender) {
loggers[categoryName].addListener("log", appender);
});
}
}
return loggers[categoryName];
}
/**
* args are appender, then zero or more categories
*/
function addAppender () {
var args = Array.prototype.slice.call(arguments);
var appender = args.shift();
if (args.length == 0 || args[0] === undefined) {
args = [ ALL_CATEGORIES ];
}
//argument may already be an array
if (args[0].forEach) {
args = args[0];
}
args.forEach(function(category) {
if (!appenders[category]) {
appenders[category] = [];
}
appenders[category].push(appender);
if (category === ALL_CATEGORIES) {
for (var logger in loggers) {
if (loggers.hasOwnProperty(logger)) {
loggers[logger].addListener("log", appender);
}
}
} else if (loggers[category]) {
loggers[category].addListener("log", appender);
}
});
}
function clearAppenders () {
appenders = [];
for (var logger in loggers) {
if (loggers.hasOwnProperty(logger)) {
loggers[logger].removeAllListeners("log");
}
}
}
function configure (configurationFile) {
if (configurationFile) {
try {
var config = JSON.parse(fs.readFileSync(configurationFile, "utf8"));
configureAppenders(config.appenders);
configureLevels(config.levels);
} catch (e) {
throw new Error("Problem reading log4js config file " + configurationFile + ". Error was " + e.message);
}
}
}
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 configureAppenders(appenderList) {
log4js.clearAppenders();
clearAppenders();
if (appenderList) {
appenderList.forEach(function(appenderConfig) {
var appender = appenderMakers[appenderConfig.type](appenderConfig);
if (appender) {
log4js.addAppender(appender, appenderConfig.category);
addAppender(appender, appenderConfig.category);
} else {
throw new Error("log4js configuration problem for "+sys.inspect(appenderConfig));
}
});
} else {
log4js.addAppender(consoleAppender);
addAppender(consoleAppender);
}
}
@ -227,24 +220,17 @@ function configureLevels(levels) {
if (levels) {
for (var category in levels) {
if (levels.hasOwnProperty(category)) {
log4js.getLogger(category).setLevel(levels[category]);
getLogger(category).setLevel(levels[category]);
}
}
}
}
/**
* Log4js.Level Enumeration. Do not use directly. Use static objects instead.
* @constructor
* @param {Number} level number of level
* @param {String} levelString String representation of level
* @private
*/
function Level(level, levelStr) {
function Level(level, levelStr, colour) {
this.level = level;
this.levelStr = levelStr;
};
this.colour = colour;
}
/**
* converts given String to corresponding Level
@ -261,8 +247,8 @@ Level.toLevel = function(sArg, defaultLevel) {
if (typeof sArg == "string") {
var s = sArg.toUpperCase();
if (log4js.levels[s]) {
return log4js.levels[s];
if (levels[s]) {
return levels[s];
}
}
return defaultLevel;
@ -289,44 +275,14 @@ Level.prototype.isGreaterThanOrEqualTo = function(otherLevel) {
* @param {Log4js.Logger} logger the associated logger
* @author Seth Chisamore
*/
LoggingEvent = function(categoryName, level, message, exception, logger) {
/**
* the timestamp of the Logging Event
* @type Date
* @private
*/
function LoggingEvent (categoryName, level, message, exception, logger) {
this.startTime = new Date();
/**
* category of event
* @type String
* @private
*/
this.categoryName = categoryName;
/**
* the logging message
* @type String
* @private
*/
this.message = message;
/**
* the logging exception
* @type Exception
* @private
*/
this.exception = exception;
/**
* level of log
* @type Log4js.Level
* @private
*/
this.level = level;
/**
* reference to logger
* @type Log4js.Logger
* @private
*/
this.logger = logger;
};
}
/**
* Logger to log messages.
@ -335,15 +291,14 @@ LoggingEvent = function(categoryName, level, message, exception, logger) {
* @param name name of category to log to
* @author Stephan Strittmatter
*/
Logger = function(name, level) {
function Logger (name, level) {
this.category = name || DEFAULT_CATEGORY;
this.level = Level.toLevel(level, log4js.levels.TRACE);
};
sys.inherits(Logger, process.EventEmitter);
this.level = Level.toLevel(level, levels.TRACE);
}
sys.inherits(Logger, events.EventEmitter);
Logger.prototype.setLevel = function(level) {
this.level = Level.toLevel(level, log4js.levels.TRACE);
this.level = Level.toLevel(level, levels.TRACE);
};
Logger.prototype.log = function(logLevel, message, exception) {
@ -370,43 +325,95 @@ Logger.prototype.isLevelEnabled = function(otherLevel) {
}
);
var consoleAppender = function (layout) {
layout = layout || basicLayout;
/**
* Get the default logger instance.
* @return {Logger} instance of default logger
* @static
*/
function getDefaultLogger () {
return getLogger(DEFAULT_CATEGORY);
}
function consoleAppender (layout) {
layout = layout || colouredLayout;
return function(loggingEvent) {
sys.puts(layout(loggingEvent));
};
standardOutput(layout(loggingEvent));
};
}
/**
* File Appender writing the logs to a text file.
* File Appender writing the logs to a text file. Supports rolling of logs by size.
*
* @param file file log messages will be written to
* @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)
*/
var fileAppender = function(file, layout) {
function fileAppender (file, layout, logSize, numBackups, filePollInterval) {
layout = layout || basicLayout;
file = file || "log4js.log";
//syncs are generally bad, but we need
//the file to be open before we start doing any writing.
var logFile = fs.openSync(file, process.O_APPEND | process.O_WRONLY | process.O_CREAT, 0644);
//register ourselves as listeners for shutdown
//so that we can close the file.
//not entirely sure this is necessary, but still.
process.addListener("exit", function() { fs.close(logFile); });
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, "utf-8");
};
fs.write(logFile, layout(loggingEvent)+'\n', null, "utf8");
};
}
var logLevelFilter = function(levelString, appender) {
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 logLevelFilter (levelString, appender) {
var level = Level.toLevel(levelString);
return function(logEvent) {
if (logEvent.level.isGreaterThanOrEqualTo(level)) {
appender(logEvent);
}
}
};
}
/**
* BasicLayout is a simple layout for storing the logs. The logs are stored
@ -417,7 +424,7 @@ var logLevelFilter = function(levelString, appender) {
*
* @author Stephan Strittmatter
*/
var basicLayout = function(loggingEvent) {
function basicLayout (loggingEvent) {
var timestampLevelAndCategory = '[' + loggingEvent.startTime.toFormattedString() + '] ';
timestampLevelAndCategory += '[' + loggingEvent.level.toString() + '] ';
timestampLevelAndCategory += loggingEvent.categoryName + ' - ';
@ -434,21 +441,74 @@ var basicLayout = function(loggingEvent) {
}
}
return output;
};
}
var messagePassThroughLayout = function(loggingEvent) {
return loggingEvent.message;
/**
* Taken from masylum's fork (https://github.com/masylum/log4js-node)
*/
function colorize (str, style) {
var styles = {
//styles
'bold' : [1, 22],
'italic' : [3, 23],
'underline' : [4, 24],
'inverse' : [7, 27],
//grayscale
'white' : [37, 39],
'grey' : [90, 39],
'black' : [90, 39],
//colors
'blue' : [34, 39],
'cyan' : [36, 39],
'green' : [32, 39],
'magenta' : [35, 39],
'red' : [31, 39],
'yellow' : [33, 39]
};
return '\033[' + styles[style][0] + 'm' + str +
'\033[' + styles[style][1] + 'm';
}
/**
* colouredLayout - taken from masylum's fork.
* same as basicLayout, but with colours.
*/
function colouredLayout (loggingEvent) {
var timestampLevelAndCategory = colorize('[' + loggingEvent.startTime.toFormattedString() + '] ', 'grey');
timestampLevelAndCategory += colorize(
'[' + loggingEvent.level.toString() + '] ', loggingEvent.level.colour
);
timestampLevelAndCategory += colorize(loggingEvent.categoryName + ' - ', 'grey');
var output = timestampLevelAndCategory + loggingEvent.message;
if (loggingEvent.exception) {
output += '\n'
output += timestampLevelAndCategory;
if (loggingEvent.exception.stack) {
output += loggingEvent.exception.stack;
} else {
output += loggingEvent.exception.name + ': '+loggingEvent.exception.message;
}
}
return output;
}
function messagePassThroughLayout (loggingEvent) {
return loggingEvent.message;
}
/**
* PatternLayout
* Takes a pattern string and returns a layout function.
* @author Stephan Strittmatter
*/
var patternLayout = function(pattern) {
pattern = pattern || patternLayout.DEFAULT_CONVERSION_PATTERN;
function patternLayout (pattern) {
var TTCC_CONVERSION_PATTERN = "%r %p %c - %m%n";
var regex = /%(-?[0-9]+)?(\.?[0-9]+)?([cdmnpr%])(\{([^\}]+)\})?|([^%]+)/;
pattern = pattern || patternLayout.TTCC_CONVERSION_PATTERN;
return function(loggingEvent) {
var formattedString = "";
var result;
@ -510,7 +570,7 @@ var patternLayout = function(pattern) {
replacement = loggingEvent.level.toString();
break;
case "r":
replacement = "" + loggingEvent.startTime.toLocaleTimeString(); //TODO: .getDifference(Log4js.applicationStartDate);
replacement = "" + loggingEvent.startTime.toLocaleTimeString();
break;
case "%":
replacement = "%";
@ -554,8 +614,31 @@ var patternLayout = function(pattern) {
};
patternLayout.TTCC_CONVERSION_PATTERN = "%r %p %c - %m%n";
patternLayout.DEFAULT_CONVERSION_PATTERN = "%m%n";
//set ourselves up if we can find a default log4js.json
configure(findConfiguration());
return {
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
};
}
Date.ISO8601_FORMAT = "yyyy-MM-dd hh:mm:ss.SSS";
Date.ISO8601_WITH_TZ_OFFSET_FORMAT = "yyyy-MM-ddThh:mm:ssO";
@ -614,10 +697,3 @@ Date.prototype.toFormattedString = function(format) {
}
};
exports.consoleAppender = log4js.consoleAppender = consoleAppender;
exports.fileAppender = log4js.fileAppender = fileAppender;
exports.logLevelFilter = log4js.logLevelFilter = logLevelFilter;
exports.basicLayout = log4js.basicLayout = basicLayout;
exports.patternLayout = log4js.patternLayout = patternLayout;
exports.messagePassThroughLayout = log4js.messagePassThroughLayout = messagePassThroughLayout;

7
lib/log4js.json Normal file
View File

@ -0,0 +1,7 @@
{
"appenders": [
{
"type": "console"
}
]
}

View File

@ -1,6 +1,6 @@
{
"name": "log4js",
"version": "0.1.1",
"version": "0.2.0",
"description": "Port of Log4js to work with node.",
"keywords": [
"logging",
@ -15,9 +15,10 @@
},
"engines": [ "node >=0.1.100" ],
"scripts": {
"test": "test.js"
"test": "vows test/logging.js"
},
"directories": {
"test": "spec"
"test": "test",
"lib": "lib"
}
}

View File

@ -1,12 +1,7 @@
describe 'log4js'
before
extend(context, {
log4js : require("log4js"),
fs: require("fs"),
waitForWriteAndThenReadFile : function (filename) {
process.loop();
return fs.readFileSync(filename, "utf8");
}
log4js : require("log4js")()
});
end
@ -18,34 +13,6 @@ describe 'log4js'
logger.addListener("log", function (logEvent) { event = logEvent; });
end
describe 'getLogger'
it 'should take a category and return a Logger'
logger.category.should.be 'tests'
logger.level.should.be log4js.levels.TRACE
logger.should.respond_to 'debug'
logger.should.respond_to 'info'
logger.should.respond_to 'warn'
logger.should.respond_to 'error'
logger.should.respond_to 'fatal'
end
it 'should emit log events'
logger.trace("Trace event");
event.level.toString().should.be 'TRACE'
event.message.should.be 'Trace event'
event.startTime.should.not.be undefined
end
it 'should not emit events of a lower level than the minimum'
logger.setLevel("DEBUG");
event = undefined;
logger.trace("This should not generate a log message");
event.should.be undefined
end
end
describe 'addAppender'
before_each
appenderEvent = undefined;
@ -170,112 +137,8 @@ describe 'log4js'
end
end
describe 'messagePassThroughLayout'
it 'should take a logevent and output only the message'
logger.debug('this is a test');
log4js.messagePassThroughLayout(event).should.be 'this is a test'
end
end
describe 'fileAppender'
before
log4js.clearAppenders();
try {
fs.unlinkSync('./tmp-tests.log');
} catch(e) {
//print('Could not delete tmp-tests.log: '+e.message);
}
end
it 'should write log events to a file'
log4js.addAppender(log4js.fileAppender('./tmp-tests.log', log4js.messagePassThroughLayout), 'tests');
logger.debug('this is a test');
waitForWriteAndThenReadFile('./tmp-tests.log').should.be 'this is a test\n'
end
end
describe 'logLevelFilter'
it 'should only pass log events greater than or equal to its own level'
var logEvent;
log4js.addAppender(log4js.logLevelFilter('ERROR', function(evt) { logEvent = evt; }));
logger.debug('this should not trigger an event');
logEvent.should.be undefined
logger.warn('neither should this');
logEvent.should.be undefined
logger.error('this should, though');
logEvent.should.not.be undefined
logEvent.message.should.be 'this should, though'
logger.fatal('so should this')
logEvent.message.should.be 'so should this'
end
end
describe 'configure'
before_each
log4js.clearAppenders();
try {
fs.unlinkSync('./tmp-tests.log');
} catch(e) {
//print('Could not delete tmp-tests.log: '+e.message);
}
try {
fs.unlinkSync('./tmp-tests-warnings.log');
} catch (e) {
//print('Could not delete tmp-tests-warnings.log: '+e.message);
}
end
it 'should load appender configuration from a json file'
//this config file defines one file appender (to ./tmp-tests.log)
//and sets the log level for "tests" to WARN
log4js.configure('spec/fixtures/log4js.json');
event = undefined;
logger = log4js.getLogger("tests");
logger.addListener("log", function(evt) { event = evt });
logger.info('this should not fire an event');
event.should.be undefined
logger.warn('this should fire an event');
event.message.should.be 'this should fire an event'
waitForWriteAndThenReadFile('./tmp-tests.log').should.be 'this should fire an event\n'
end
it 'should handle logLevelFilter configuration'
log4js.configure('spec/fixtures/with-logLevelFilter.json');
logger.info('main');
logger.error('both');
logger.warn('both');
logger.debug('main');
waitForWriteAndThenReadFile('./tmp-tests.log').should.be 'main\nboth\nboth\nmain\n'
waitForWriteAndThenReadFile('./tmp-tests-warnings.log').should.be 'both\nboth\n'
end
end
end
describe 'Date'
before
require("log4js");
end
describe 'toFormattedString'
it 'should add a toFormattedString method to Date'
var date = new Date();
date.should.respond_to 'toFormattedString'
end
it 'should default to a format'
var date = new Date(2010, 0, 11, 14, 31, 30, 5);
date.toFormattedString().should.be '2010-01-11 14:31:30.005'
end
end
end

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test/logging.js Normal file
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var vows = require('vows'),
assert = require('assert');
vows.describe('log4js').addBatch({
'getLogger': {
topic: function() {
var log4js = require('../lib/log4js')();
log4js.clearAppenders();
var logger = log4js.getLogger('tests');
logger.setLevel("DEBUG");
return logger;
},
'should take a category and return a logger': function(logger) {
assert.equal(logger.category, 'tests');
assert.equal(logger.level.toString(), "DEBUG");
assert.isFunction(logger.debug);
assert.isFunction(logger.info);
assert.isFunction(logger.warn);
assert.isFunction(logger.error);
assert.isFunction(logger.fatal);
},
'log events' : {
topic: function(logger) {
var events = [];
logger.addListener("log", function (logEvent) { events.push(logEvent); });
logger.debug("Debug event");
logger.trace("Trace event 1");
logger.trace("Trace event 2");
logger.warn("Warning event");
return events;
},
'should emit log events': function(events) {
assert.equal(events[0].level.toString(), 'DEBUG');
assert.equal(events[0].message, 'Debug event');
assert.instanceOf(events[0].startTime, Date);
},
'should not emit events of a lower level': function(events) {
assert.length(events, 2);
assert.equal(events[1].level.toString(), 'WARN');
}
},
},
'fileAppender': {
topic: function() {
var appender, logmessages = [], thing = "thing", fakeFS = {
openSync: function() {
assert.equal(arguments[0], './tmp-tests.log');
assert.equal(arguments[1], 'a');
assert.equal(arguments[2], 0644);
return thing;
},
write: function() {
assert.equal(arguments[0], thing);
assert.isString(arguments[1]);
assert.isNull(arguments[2]);
assert.equal(arguments[3], "utf8");
logmessages.push(arguments[1]);
},
watchFile: function() {
throw new Error("watchFile should not be called if logSize is not defined");
}
},
log4js = require('../lib/log4js')(fakeFS);
log4js.clearAppenders();
appender = log4js.fileAppender('./tmp-tests.log', log4js.messagePassThroughLayout);
log4js.addAppender(appender, 'file-test');
var logger = log4js.getLogger('file-test');
logger.debug("this is a test");
return logmessages;
},
'should write log messages to file': function(logmessages) {
assert.length(logmessages, 1);
assert.equal(logmessages, "this is a test\n");
}
},
'fileAppender - with rolling based on size and number of files to keep': {
topic: function() {
var watchCb,
filesOpened = [],
filesClosed = [],
filesRenamed = [],
newFilenames = [],
existingFiles = ['tests.log'],
log4js = require('../lib/log4js')({
watchFile: function(file, options, callback) {
assert.equal(file, 'tests.log');
assert.equal(options.persistent, false);
assert.equal(options.interval, 30000);
assert.isFunction(callback);
watchCb = callback;
},
openSync: function(file) {
assert.equal(file, 'tests.log');
filesOpened.push(file);
return file;
},
statSync: function(file) {
if (existingFiles.indexOf(file) < 0) {
throw new Error("this file doesn't exist");
} else {
return true;
}
},
renameSync: function(oldFile, newFile) {
filesRenamed.push(oldFile);
existingFiles.push(newFile);
},
closeSync: function(file) {
//it should always be closing tests.log
assert.equal(file, 'tests.log');
filesClosed.push(file);
}
});
var appender = log4js.fileAppender('tests.log', log4js.messagePassThroughLayout, 1024, 2, 30);
return [watchCb, filesOpened, filesClosed, filesRenamed, existingFiles];
},
'should close current log file, rename all old ones, open new one on rollover': function(args) {
var watchCb = args[0], filesOpened = args[1], filesClosed = args[2], filesRenamed = args[3], existingFiles = args[4];
assert.isFunction(watchCb);
//tell the watchCb that the file is below the threshold
watchCb({ size: 891 }, { size: 0 });
//filesOpened should still be the first one.
assert.length(filesOpened, 1);
//tell the watchCb that the file is now over the threshold
watchCb({ size: 1053 }, { size: 891 });
//it should have closed the first log file.
assert.length(filesClosed, 1);
//it should have renamed the previous log file
assert.length(filesRenamed, 1);
//and we should have two files now
assert.length(existingFiles, 2);
assert.deepEqual(existingFiles, ['tests.log', 'tests.log.1']);
//and opened a new log file.
assert.length(filesOpened, 2);
//now tell the watchCb that we've flipped over the threshold again
watchCb({ size: 1025 }, { size: 123 });
//it should have closed the old file
assert.length(filesClosed, 2);
//it should have renamed both the old log file, and the previous '.1' file
assert.length(filesRenamed, 3);
assert.deepEqual(filesRenamed, ['tests.log', 'tests.log.1', 'tests.log' ]);
//it should have renamed 2 more file
assert.length(existingFiles, 4);
assert.deepEqual(existingFiles, ['tests.log', 'tests.log.1', 'tests.log.2', 'tests.log.1']);
//and opened a new log file
assert.length(filesOpened, 3);
//tell the watchCb we've flipped again.
watchCb({ size: 1024 }, { size: 234 });
//close the old one again.
assert.length(filesClosed, 3);
//it should have renamed the old log file and the 2 backups, with the last one being overwritten.
assert.length(filesRenamed, 5);
assert.deepEqual(filesRenamed, ['tests.log', 'tests.log.1', 'tests.log', 'tests.log.1', 'tests.log' ]);
//it should have renamed 2 more files
assert.length(existingFiles, 6);
assert.deepEqual(existingFiles, ['tests.log', 'tests.log.1', 'tests.log.2', 'tests.log.1', 'tests.log.2', 'tests.log.1']);
//and opened a new log file
assert.length(filesOpened, 4);
}
},
'configure' : {
topic: function() {
var messages = {}, fakeFS = {
openSync: function(file) {
return file;
},
write: function(file, message) {
if (!messages.hasOwnProperty(file)) {
messages[file] = [];
}
messages[file].push(message);
},
readFileSync: function(file, encoding) {
return require('fs').readFileSync(file, encoding);
},
watchFile: function(file) {
messages.watchedFile = file;
}
},
log4js = require('../lib/log4js')(fakeFS);
return [ log4js, messages ];
},
'should load appender configuration from a json file': function(args) {
var log4js = args[0], messages = args[1];
delete messages['tmp-tests.log'];
log4js.clearAppenders();
//this config file defines one file appender (to ./tmp-tests.log)
//and sets the log level for "tests" to WARN
log4js.configure('test/log4js.json');
var logger = log4js.getLogger("tests");
logger.info('this should not be written to the file');
logger.warn('this should be written to the file');
assert.length(messages['tmp-tests.log'], 1);
assert.equal(messages['tmp-tests.log'][0], 'this should be written to the file\n');
},
'should handle logLevelFilter configuration': function(args) {
var log4js = args[0], messages = args[1];
delete messages['tmp-tests.log'];
delete messages['tmp-tests-warnings.log'];
log4js.clearAppenders();
log4js.configure('test/with-logLevelFilter.json');
var logger = log4js.getLogger("tests");
logger.info('main');
logger.error('both');
logger.warn('both');
logger.debug('main');
assert.length(messages['tmp-tests.log'], 4);
assert.length(messages['tmp-tests-warnings.log'], 2);
assert.deepEqual(messages['tmp-tests.log'], ['main\n','both\n','both\n','main\n']);
assert.deepEqual(messages['tmp-tests-warnings.log'], ['both\n','both\n']);
},
'should handle fileAppender with log rolling' : function(args) {
var log4js = args[0], messages = args[1];
delete messages['tmp-test.log'];
log4js.configure('test/with-log-rolling.json');
assert.equal(messages.watchedFile, 'tmp-test.log');
}
},
'with no appenders defined' : {
topic: function() {
var logger, message, log4js = require('../lib/log4js')(null, function (msg) { message = msg; } );
logger = log4js.getLogger("some-logger");
logger.debug("This is a test");
return message;
},
'should default to the console appender': function(message) {
assert.isTrue(/This is a test$/.test(message));
}
},
'default setup': {
topic: function() {
var pathsChecked = [],
message,
logger,
fakeFS = {
readFileSync: function (file, encoding) {
assert.equal(file, '/path/to/config/log4js.json');
assert.equal(encoding, 'utf8');
return '{ "appenders" : [ { "type": "console", "layout": { "type": "messagePassThrough" }} ] }';
},
statSync: function (path) {
pathsChecked.push(path);
if (path === '/path/to/config/log4js.json') {
return true;
} else {
throw new Error("no such file");
}
}
},
fakeConsoleLog = function (msg) { message = msg; },
fakeRequirePath = [ '/a/b/c', '/some/other/path', '/path/to/config', '/some/later/directory' ],
log4js = require('../lib/log4js')(fakeFS, fakeConsoleLog, fakeRequirePath),
logger = log4js.getLogger('a-test');
logger.debug("this is a test");
return [ pathsChecked, message ];
},
'should check current directory, require paths, and finally the module dir for log4js.json': function(args) {
var pathsChecked = args[0];
assert.deepEqual(pathsChecked, [
'log4js.json',
'/a/b/c/log4js.json',
'/some/other/path/log4js.json',
'/path/to/config/log4js.json',
'/some/later/directory/log4js.json',
require('path').normalize(__dirname + '/../lib/log4js.json')
]);
},
'should configure log4js from first log4js.json found': function(args) {
var message = args[1];
assert.equal(message, 'this is a test');
}
},
'colouredLayout': {
topic: function() {
return require('../lib/log4js')().colouredLayout;
},
'should apply level colour codes to output': function(layout) {
var output = layout({
message: "nonsense",
startTime: new Date(2010, 11, 5, 14, 18, 30, 45),
categoryName: "cheese",
level: {
colour: "green",
toString: function() { return "ERROR"; }
}
});
assert.equal(output, '\033[90m[2010-12-05 14:18:30.045] \033[39m\033[32m[ERROR] \033[39m\033[90mcheese - \033[39mnonsense');
}
},
'messagePassThroughLayout': {
topic: function() {
return require('../lib/log4js')().messagePassThroughLayout;
},
'should take a logevent and output only the message' : function(layout) {
assert.equal(layout({
message: "nonsense",
startTime: new Date(2010, 11, 5, 14, 18, 30, 45),
categoryName: "cheese",
level: {
colour: "green",
toString: function() { return "ERROR"; }
}
}), "nonsense");
}
},
'logLevelFilter': {
topic: function() {
var log4js = require('../lib/log4js')(), logEvents = [], logger;
log4js.clearAppenders();
log4js.addAppender(log4js.logLevelFilter('ERROR', function(evt) { logEvents.push(evt); }));
logger = log4js.getLogger();
logger.debug('this should not trigger an event');
logger.warn('neither should this');
logger.error('this should, though');
logger.fatal('so should this');
return logEvents;
},
'should only pass log events greater than or equal to its own level' : function(logEvents) {
assert.length(logEvents, 2);
assert.equal(logEvents[0].message, 'this should, though');
assert.equal(logEvents[1].message, 'so should this');
}
},
'Date extensions': {
topic: function() {
require('../lib/log4js');
return new Date(2010, 0, 11, 14, 31, 30, 5);
},
'should add a toFormattedString method to Date': function(date) {
assert.isFunction(date.toFormattedString);
},
'should default to a format': function(date) {
assert.equal(date.toFormattedString(), '2010-01-11 14:31:30.005');
}
}
}).export(module);

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{
"appenders": [
{
"type": "file",
"filename": "tmp-test.log",
"maxLogSize": 1024,
"backups": 3,
"pollInterval": 15
}
]
}