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index.js
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index.js
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'use strict';
/** Dependencies */
const fs = require('fs');
const Rollbar = require('rollbar');
const path = require('path');
/** Constants */
const DEFAULT_CONFIG = {
error_log_folder : path.resolve('./') + '/error-log/',
server_log_folder : path.resolve('./') + '/server-log/',
default_log_folder : path.resolve('./') + '/default-log/',
fields : ['ip', 'ips', 'method', 'path', 'query', 'params', 'body']
};
/** Function to get current date
*/
const today = (time = false) => {
let d = new Date();
if (!time) {
return d.getFullYear()+'-'+d.getMonth()+'-'+d.getDate();
}
return d.getFullYear()+'-'+d.getMonth()+'-'+d.getDate()+' '+d.getHours()+':'+d.getMinutes()+':'+d.getSeconds();
};
/** Function to get current datetime
*/
const now = () => {
return today(true);
};
/** Function to validate configuration
*/
const constructConfiguration = (configuration) => {
configuration = typeof configuration == 'object' ? configuration : {};
for(var key in DEFAULT_CONFIG) {
if (configuration[key] == undefined || configuration[key] == null) {
configuration[key] = DEFAULT_CONFIG[key];
}
}
configuration.log_object = ['datetime', 'ip', 'ips'];
return configuration;
};
/** Function to check rollbar
*/
const checkRollbar = (configuration) => {
if (!configuration.rollbar) {
return false;
}
if (!configuration.rollbar.token) {
return false;
}
return true;
};
/** main
*/
var MuffinLogger = function() {
this.configuration = DEFAULT_CONFIG;
this.setConfiguration = function(configuration) {
this.configuration = constructConfiguration(configuration);
this.initDir();
}
/** Function to init directories
*/
this.initDir = () => {
if (!fs.existsSync(this.configuration.error_log_folder)){
fs.mkdirSync(this.configuration.error_log_folder);
}
if (!fs.existsSync(this.configuration.server_log_folder)){
fs.mkdirSync(this.configuration.server_log_folder);
}
if (!fs.existsSync(this.configuration.default_log_folder)){
fs.mkdirSync(this.configuration.default_log_folder);
}
}
/** Function to log default print
*/
this.logDefault = (obj, priority = 0) => {
if( process.env != 'production' || priority > 0 ) {
fs.appendFileSync( this.configuration.default_log_folder+today()+"-log", '\n' + JSON.stringify(obj) );
}
}
/**
Function to log errors
*/
this.logError = (obj) => {
fs.appendFileSync( this.configuration.error_log_folder+today()+"-errors", '\n' + JSON.stringify(obj) );
if ( checkRollbar(this.configuration) ) {
let rollbar = new Rollbar(this.configuration.rollbar.token);
if ( Array.isArray(this.configuration.rollbar.evn) ) {
if( this.configuration.rollbar.evn.indexOf(process.evn) >= 0 ) {
rollbar.error(obj);
}
} else {
rollbar.error(obj);
}
}
};
/** Middleware function
*/
this.middleware = (req, res, next) => {
let log = { datetime: now(), ip: req.ip, ips: req.ips };
/** Function to log default prints
*/
const logDefault = (obj, priority = 0) => {
log.log = obj;
this.logDefault(log, priority);
};
/** Function to log errors
*/
const logError = (obj) => {
log.error = obj;
this.logError(log);
};
// Server logs
this.configuration.fields.forEach(function(key) {
log[key] = req[key];
});
fs.appendFileSync( this.configuration.server_log_folder+today()+"-server", '\n' + JSON.stringify(log) );
req.log = logDefault;
req.error = logError;
next();
}
// Create directories
this.initDir()
}
module.exports = new MuffinLogger();