81 lines
1.8 KiB
JavaScript
81 lines
1.8 KiB
JavaScript
/*
|
|
* logger
|
|
* cylonjs.com
|
|
*
|
|
* Copyright (c) 2013 The Hybrid Group
|
|
* Licensed under the Apache 2.0 license.
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
var levels = ["debug", "info", "warn", "error", "fatal"];
|
|
|
|
var BasicLogger = require('./logger/basic_logger'),
|
|
NullLogger = require('./logger/null_logger'),
|
|
Config = require('./config');
|
|
|
|
// The Logger is a global object to facilitate logging stuff to the console (or
|
|
// other output) easily and consistently. It's available anywhere in Cylon, as
|
|
// well as in external modules that are loaded into Cylon
|
|
var Logger = module.exports = {};
|
|
|
|
// Public: Creates a Logger instance and assigns it to @logger
|
|
//
|
|
// logger - logger object to use. Defaults to a BasicLogger, or a NullLogger if
|
|
// false is supplied
|
|
//
|
|
// level - logging level to use. if supplied, will only log to specified level
|
|
// or above
|
|
//
|
|
// Returns the new logger instance
|
|
Logger.setup = function setup() {
|
|
var logger = Config.logging.logger,
|
|
level = Config.logging.level || "info";
|
|
|
|
if (logger == null) { logger = BasicLogger; }
|
|
|
|
this.logger = logger || NullLogger;
|
|
|
|
if (typeof level === 'string') {
|
|
setLogLevel(level);
|
|
}
|
|
|
|
return this.logger;
|
|
};
|
|
|
|
Logger.toString = function() {
|
|
return this.logger.toString();
|
|
};
|
|
|
|
levels.forEach(function(level) {
|
|
Logger[level] = function() {
|
|
return this.logger[level].apply(this.logger, arguments);
|
|
};
|
|
});
|
|
|
|
var setLogLevel = function(level) {
|
|
var index = levels.indexOf(level),
|
|
active,
|
|
ignored;
|
|
|
|
if (index < 0) {
|
|
throw new Error("Invalid Log Level specified: " + level);
|
|
}
|
|
|
|
active = levels.slice(index);
|
|
ignored = levels.slice(0, index);
|
|
|
|
active.forEach(function(level) {
|
|
Logger[level] = function() {
|
|
return this.logger[level].apply(this.logger, arguments);
|
|
};
|
|
});
|
|
|
|
ignored.forEach(function(level) {
|
|
Logger[level] = function() {};
|
|
});
|
|
}
|
|
|
|
Logger.setup();
|
|
|