/node_modules/mongoose/node_modules/mongodb-core/lib/connection/logger.js
https://bitbucket.org/coleman333/smartsite · JavaScript · 246 lines · 136 code · 17 blank · 93 comment · 39 complexity · c1058202b683f2f0733406c5c6873b67 MD5 · raw file
- 'use strict';
- var f = require('util').format,
- MongoError = require('../error').MongoError;
- // Filters for classes
- var classFilters = {};
- var filteredClasses = {};
- var level = null;
- // Save the process id
- var pid = process.pid;
- // current logger
- var currentLogger = null;
- /**
- * Creates a new Logger instance
- * @class
- * @param {string} className The Class name associated with the logging instance
- * @param {object} [options=null] Optional settings.
- * @param {Function} [options.logger=null] Custom logger function;
- * @param {string} [options.loggerLevel=error] Override default global log level.
- * @return {Logger} a Logger instance.
- */
- var Logger = function(className, options) {
- if (!(this instanceof Logger)) return new Logger(className, options);
- options = options || {};
- // Current reference
- this.className = className;
- // Current logger
- if (options.logger) {
- currentLogger = options.logger;
- } else if (currentLogger == null) {
- currentLogger = console.log;
- }
- // Set level of logging, default is error
- if (options.loggerLevel) {
- level = options.loggerLevel || 'error';
- }
- // Add all class names
- if (filteredClasses[this.className] == null) classFilters[this.className] = true;
- };
- /**
- * Log a message at the debug level
- * @method
- * @param {string} message The message to log
- * @param {object} object additional meta data to log
- * @return {null}
- */
- Logger.prototype.debug = function(message, object) {
- if (
- this.isDebug() &&
- ((Object.keys(filteredClasses).length > 0 && filteredClasses[this.className]) ||
- (Object.keys(filteredClasses).length === 0 && classFilters[this.className]))
- ) {
- var dateTime = new Date().getTime();
- var msg = f('[%s-%s:%s] %s %s', 'DEBUG', this.className, pid, dateTime, message);
- var state = {
- type: 'debug',
- message: message,
- className: this.className,
- pid: pid,
- date: dateTime
- };
- if (object) state.meta = object;
- currentLogger(msg, state);
- }
- };
- /**
- * Log a message at the warn level
- * @method
- * @param {string} message The message to log
- * @param {object} object additional meta data to log
- * @return {null}
- */
- (Logger.prototype.warn = function(message, object) {
- if (
- this.isWarn() &&
- ((Object.keys(filteredClasses).length > 0 && filteredClasses[this.className]) ||
- (Object.keys(filteredClasses).length === 0 && classFilters[this.className]))
- ) {
- var dateTime = new Date().getTime();
- var msg = f('[%s-%s:%s] %s %s', 'WARN', this.className, pid, dateTime, message);
- var state = {
- type: 'warn',
- message: message,
- className: this.className,
- pid: pid,
- date: dateTime
- };
- if (object) state.meta = object;
- currentLogger(msg, state);
- }
- }),
- /**
- * Log a message at the info level
- * @method
- * @param {string} message The message to log
- * @param {object} object additional meta data to log
- * @return {null}
- */
- (Logger.prototype.info = function(message, object) {
- if (
- this.isInfo() &&
- ((Object.keys(filteredClasses).length > 0 && filteredClasses[this.className]) ||
- (Object.keys(filteredClasses).length === 0 && classFilters[this.className]))
- ) {
- var dateTime = new Date().getTime();
- var msg = f('[%s-%s:%s] %s %s', 'INFO', this.className, pid, dateTime, message);
- var state = {
- type: 'info',
- message: message,
- className: this.className,
- pid: pid,
- date: dateTime
- };
- if (object) state.meta = object;
- currentLogger(msg, state);
- }
- }),
- /**
- * Log a message at the error level
- * @method
- * @param {string} message The message to log
- * @param {object} object additional meta data to log
- * @return {null}
- */
- (Logger.prototype.error = function(message, object) {
- if (
- this.isError() &&
- ((Object.keys(filteredClasses).length > 0 && filteredClasses[this.className]) ||
- (Object.keys(filteredClasses).length === 0 && classFilters[this.className]))
- ) {
- var dateTime = new Date().getTime();
- var msg = f('[%s-%s:%s] %s %s', 'ERROR', this.className, pid, dateTime, message);
- var state = {
- type: 'error',
- message: message,
- className: this.className,
- pid: pid,
- date: dateTime
- };
- if (object) state.meta = object;
- currentLogger(msg, state);
- }
- }),
- /**
- * Is the logger set at info level
- * @method
- * @return {boolean}
- */
- (Logger.prototype.isInfo = function() {
- return level === 'info' || level === 'debug';
- }),
- /**
- * Is the logger set at error level
- * @method
- * @return {boolean}
- */
- (Logger.prototype.isError = function() {
- return level === 'error' || level === 'info' || level === 'debug';
- }),
- /**
- * Is the logger set at error level
- * @method
- * @return {boolean}
- */
- (Logger.prototype.isWarn = function() {
- return level === 'error' || level === 'warn' || level === 'info' || level === 'debug';
- }),
- /**
- * Is the logger set at debug level
- * @method
- * @return {boolean}
- */
- (Logger.prototype.isDebug = function() {
- return level === 'debug';
- });
- /**
- * Resets the logger to default settings, error and no filtered classes
- * @method
- * @return {null}
- */
- Logger.reset = function() {
- level = 'error';
- filteredClasses = {};
- };
- /**
- * Get the current logger function
- * @method
- * @return {function}
- */
- Logger.currentLogger = function() {
- return currentLogger;
- };
- /**
- * Set the current logger function
- * @method
- * @param {function} logger Logger function.
- * @return {null}
- */
- Logger.setCurrentLogger = function(logger) {
- if (typeof logger !== 'function') throw new MongoError('current logger must be a function');
- currentLogger = logger;
- };
- /**
- * Set what classes to log.
- * @method
- * @param {string} type The type of filter (currently only class)
- * @param {string[]} values The filters to apply
- * @return {null}
- */
- Logger.filter = function(type, values) {
- if (type === 'class' && Array.isArray(values)) {
- filteredClasses = {};
- values.forEach(function(x) {
- filteredClasses[x] = true;
- });
- }
- };
- /**
- * Set the current log level
- * @method
- * @param {string} level Set current log level (debug, info, error)
- * @return {null}
- */
- Logger.setLevel = function(_level) {
- if (_level !== 'info' && _level !== 'error' && _level !== 'debug' && _level !== 'warn') {
- throw new Error(f('%s is an illegal logging level', _level));
- }
- level = _level;
- };
- module.exports = Logger;