node.js filewatcher that sends signal to a remote api when triggered

filewatcher.js

/*
*
* filewatcher.js
* This file watcher application is written in node.js
* by Erickson Delgado.
*
*/

var fs = require('fs')
	, request = require('request')
	, async = require('async')
	, log = require('book').default() // panic, error, warn, info, debug, trace
	, id
	, config;

try {
	config = JSON.parse(fs.readFileSync('d:\\filewatcher\\config.json'));
} catch (e) {
	log.error('JSON parsing error: ' + e);
}


var watch = function ( dir ) {
	try {
		fs.watch( dir.path, function( event, file ) {
			logfile = config.log_dir + '/filewatcher' + require('strftime')("-%Y%m%d") + '.log'
			log.use( require('book-file')({
				filename: logfile
			}));

			if ( event === 'change' ) {
				log.trace( require('strftime')("%Y-%m-%d %H:%M:%S") + ' ' + event.toUpperCase() + ', file: ' + file );
				if ( id ) {
					log.trace('id: ' + id);
					clearTimeout( id );
					id = null;
				}
				id = setTimeout( function() {
					var ts = new Date();
					log.info( require('strftime')("%Y-%m-%d %H:%M:%S") + ' file change detected. Attempting POST to ' + config.api + ' for job_id ' + dir.job_id);
					var options = {
						uri: config.api,
						method: 'POST',
						json: {
							"job_id": dir.job_id 
						}
					}
					
					request(options, function(error, response, body) {
						if (!error && response.statusCode == 200) {
							log.info(JSON.stringify(body));
						} else {
							log.error('Error in POST request: ' + error);
						}
					});
				}, 15000 ); // 15s wait to avoid duplicates
			}
		});	
	} catch (e) {
		log.error(e);
	}
}

async.map(config.dirs, watch, function(err, results){
	log.trace('async results: ' + results);
});