/*
* Your installation or use of this SugarCRM file is subject to the applicable
* terms available at
* http://support.sugarcrm.com/Resources/Master_Subscription_Agreements/.
* If you do not agree to all of the applicable terms or do not have the
* authority to bind the entity as an authorized representative, then do not
* install or use this SugarCRM file.
*
* Copyright (C) SugarCRM Inc. All rights reserved.
*/
/**
* Application logger.
*
* Usage example:
*
* ```
* const logger = require('./logger')({
* level: 'DEBUG',
* });
*
* // Log a string message
* logger.debug('Some debug message');
*
* // Log an object
* let obj = { foo: 'bar' };
* logger.info(obj);
*
* // Log a closure.
* let a = 1;
* logger.error(function() { return a; });
* ```
*
* @module Core/Logger
*/
let config = {
level: 'error',
formatter: 'SimpleFormatter',
consoleWriter: 'ConsoleWriter',
serverWriter: 'ServerWriter',
};
const writers = {
/**
* Default client-side log writer.
* Outputs messages onto browser's console object.
*
* @private
*/
ConsoleWriter: {
/**
* Writes a message with the given log level to the browser console.
* The writer uses:
*
* - `console.info`: `TRACE`, `DEBUG` and `INFO`.
* - `console.warn`: `WARN`.
* - `console.error`: `ERROR` and `FATAL`.
*
* @param {Utils.Logger.levels} level A logger level from logger.levels
* @param {string} message The message to write.
* @method
*/
write: function(level, message) {
// work around for browsers without console
if (!window.console) window.console = {};
if (!window.console.log) window.console.log = function() { };
if (level.value <= Logger.levels.INFO.value) {
console.log(message);
}
else if (level.value == Logger.levels.WARN.value) {
console.warn(message);
}
else {
console.error(message);
}
},
},
/**
* Default server-side log writer.
* Writes log messages to the server.
*
* @private
*/
ServerWriter: {
/**
* Writes a log message with a given {@link Utils.Logger.levels}
* level onto the server.
*
* @param {Utils.Logger.levels} level Logger level.
* @param {string} message Log message.
* @throws {string} Exceptions are thrown whether the returned
* status is `false` or an error occurred while processing the
* request.
*/
write: function(level, message) {
// FIXME: add support for other logger levels (SC-5483).
if (level.value < Logger.levels.WARN.value) {
return;
}
if (!SUGAR.App.api.isAuthenticated()) {
return;
}
let write = config.writeToServer || false;
if (!write || !message.trim().length) {
return;
}
let url = SUGAR.App.api.buildURL(undefined, 'logger');
let params = {
level: level.name.toLowerCase(),
message: message,
};
SUGAR.App.api.call('create', url, params, {
success: function(data) {
if (!data.status) {
throw 'Failed to write log message {' + message + '} onto server';
}
},
error: function(e) {
throw e;
}
});
},
},
};
const formatters = {
/**
* Default formatter for log messages.
* Formats a log message as a string with log level and UTC timestamp.
* ```
* const Logger = require('./logger');
*
* // Log a trace message
* Logger.trace('Blah-blah');
*
* // Output
* // TRACE[2012-1-26 2:38:23]: Blah-blah
* ```
*
* @private
*/
SimpleFormatter: {
/**
* Formats a log message by adding log level name and UTC timestamp.
*
* @param {Object} level Logging level.
* @param {string} message The message to log.
* @param {Date} date Logging timestamp.
* @return {string} The formatted log message.
*/
format: function(level, message, date) {
let dateString = date.getUTCFullYear() + '-' + (date.getUTCMonth() + 1) + '-' + date.getUTCDate() +
' ' + date.getUTCHours() + ':' + date.getUTCMinutes() + ':' + date.getUTCSeconds();
return level.name + '[' + dateString + ']: ' + message;
},
},
};
/**
* @alias module:Core/Logger
*/
const Logger = {
/**
* Logging levels.
*
* @private
* @type {Object}
*/
levels: {
/**
* Trace log level
*/
TRACE: {
value: 1,
name: 'TRACE',
},
/**
* Debug log level
*/
DEBUG: {
value: 2,
name: 'DEBUG',
},
/**
* Info log level
*/
INFO: {
value: 3,
name: 'INFO',
},
/**
* Warn log level
*/
WARN: {
value: 4,
name: 'WARN',
},
/**
* Error log level
*/
ERROR: {
value: 5,
name: 'ERROR',
},
/**
* Fatal log level
*/
FATAL: {
value: 6,
name: 'FATAL',
}
},
/**
* Logs a message with the TRACE log level.
*
* @method
* @param {string|Object|Function} message Message to log.
*/
trace: function(message) {
this.log(this.levels.TRACE, message);
},
/**
* Logs a message with the DEBUG log level.
*
* @param {string|Object|Function} message Message to log.
*/
debug: function(message) {
this.log(this.levels.DEBUG, message);
},
/**
* Logs a message with the INFO log level.
*
* @param {string|Object|Function} message Message to log.
*/
info: function(message) {
this.log(this.levels.INFO, message);
},
/**
* Logs a message with the WARN log level.
*
* @param {string|Object|Function} message Message to log.
*/
warn: function(message) {
this.log(this.levels.WARN, message);
},
/**
* Logs a message with the ERROR log level.
*
* @param {string|Object|Function} message Message to log.
*/
error: function(message) {
this.log(this.levels.ERROR, message);
},
/**
* Logs a message with the FATAL log level.
*
* @param {string|Object|Function} message Message to log.
*/
fatal: function(message) {
this.log(this.levels.FATAL, message);
},
/**
* Retrieves logger level based on system settings.
*
* @return {Object} Logger level or `ERROR` if none defined.
*/
getLevel: function() {
let level = config.level;
if (!level) {
return this.levels.ERROR;
}
level = level.toUpperCase();
// FIXME this needs to be done after SC-5483 is implemented
/*
if (!this.levels[level]) {
console.error('Your logger level is set to an invalid value. ' +
'Please redefine it in Administration > System Settings. ' +
'If you continue to see this warning, please ' +
'contact your Admin.');
}
*/
return this.levels[level] || this.levels.ERROR;
},
/**
* Logs a message with a given {@link Utils.Logger.levels} level.
* If the message is an object, it will be serialized into a JSON string.
* If the message is a function, it will evaluated in the logger's scope.
*
* @param {Utils.Logger.levels} level log level
* @param {string|Object|Function} message log message
*/
log: function(level, message) {
try {
let currentLevel = this.getLevel();
if (level.value < currentLevel.value) {
return;
}
message = message || '<none>';
if (_.isFunction(message)) {
message = message.call(this);
}
if (_.isObject(message)) {
// Try to json-ify the object. It'll fail if it has circular
// dependency
try {
message = JSON.stringify(message);
} catch (e) {
message = message.toString();
}
}
const formatter = formatters[config.formatter] || formatters.SimpleFormatter;
const consoleWriter = writers[config.consoleWriter] || writers.ConsoleWriter;
const serverWriter = writers[config.serverWriter] || writers.ServerWriter;
message = formatter.format(level, message, new Date());
consoleWriter.write(level, message);
serverWriter.write(level, message);
} catch (e) {
console.log('Failed to log message {' + message + '} due to exception: ' + e);
}
}
};
Object.defineProperty(Logger, 'SimpleFormatter', {
get: function() {
SUGAR.App.logger.warn('`Utils.Logger.SimpleFormatter` has been made private since 7.10 and you will not be able ' +
'to access it in the next release. Please do not use it anymore');
return formatters.SimpleFormatter;
}
});
Object.defineProperty(Logger, 'ServerWriter', {
get: function() {
SUGAR.App.logger.warn('`Utils.Logger.ServerWriter` has been made private since 7.10 and you will not be able ' +
'to access it in the next release. Please do not use it anymore');
return writers.ServerWriter;
}
});
Object.defineProperty(Logger, 'ConsoleWriter', {
get: function() {
SUGAR.App.logger.warn('`Utils.Logger.ConsoleWriter` has been made private since 7.10 and you will not be able ' +
'to access it in the next release. Please do not use it anymore');
return writers.ConsoleWriter;
}
});
module.exports = function(options) {
// Config should be immutable. So we should do :
// config = _.extend(config, {default config}, options);
// For now, to keep backward compatibility with 7.9, we do the following:
config = options || {};
return Logger;
}