bts-logging

Very simple logger factory based on log4js

Install

npm install bts-logging

Overview

Small logger factory just to save me rewriting something similar for every project.

Supports a global log level set via environment variable (to override the default level of 'INFO') and per-logger log levels.

Configuration

Define a logging.js file in your application project as follows:

module.exports = require('bts-logging')(__dirname, {
    logCfgFile: '../config/logging.json',
    logFilesDir: '../logs'
});
 

Adjust paths to configuration file and log directory as appropriate obviously.

A sample logging.json file is provided in this project. Copy to your own application and adjust as necessary. Log4js documenation is here.

Usage

var logging = require('./logging');                            // Path to your logging.js file as described above
 
var logger = logging.createLogger('foo');                      // Use default log level of 'INFO'
var logger = logging.createLogger('bar', 'DEBUG');             // Use custom log level
var logger = logging.createLoggerFromFileName(__filename);     // If __filename is 'foo.js', creates a logger with name 'foo' 
 
// Use log4js logger returned. See log4js docs linked above for details
logger.trace('blah');
logger.info('etc');
 

Run your app with LOG_LEVEL=X, where X = 'TRACE' | 'DEBUG' | 'INFO' | 'WARN' | 'ERROR', to override the default log level of 'INFO'

License

MIT