@oat-sa/tao-core-sdk/src/core/logger.js

Core libraries of TAO

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; under version 2
 * of the License (non-upgradable).
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * Copyright (c) 2017-2019 (original work) Open Assessment Technologies SA;
 *
 */

/**
 *
 * Logger facade
 *
 * Load the logger providers based on the module configuration
 * and exposes the logger api
 *
 * @author Bertrand Chevrier <bertrand@taotesting.com>
 */
import _ from 'lodash';
import module from 'module';
import loggerFactory from 'core/logger/api';

/**
 * The default configuration if nothing
 * is found on the module config
 */
const defaultConfig = {
    level: loggerFactory.levels.warn,
    loggers: {
        'core/logger/console': {
            level: 'warn'
        }
    }
};

//the logger providers are configured through the AMD module config
const config = _.defaults(module.config() || {}, defaultConfig);
const logger = loggerFactory('core/logger');

loggerFactory.setDefaultLevel(config.level);
loggerFactory.load(config.loggers);

/**
 * Catch uncaught errors
 * @param {string} msg - error message
 * @param {string} url - current url
 * @param {number} line - line number
 * @param {number} col - column number
 * @return {boolean}
 */
window.onerror = function onError(msg, url, line, col) {
    logger.error(`Caught[via window.onerror]: '${msg}' from ${url}:${line}:${col}`);
};

/**
 * Expose explicitely an direct way to activate log levels
 * @param {String|Number} level - the new log level
 * @returns {String} the defined level
 */
window.setTaoLogLevel = function setTaoLogLevel(level) {
    return loggerFactory.setDefaultLevel(level);
};

//exposes the API
export default loggerFactory;