java node.js assignment

// storeLogs.js // // node storeLogs.js <logfile> // // // The log messages in the file should be of the format: // <month> <day of month> <24-hour time in hh:mm:ss> <host> <service name[pid]>: Actual message // var mc = require('mongodb').MongoClient; var fs = require('fs'); var data = fs.readFileSync(process.argv[2], 'utf-8'); var lines = data.split('\n'); var entries = []; var i, j, entry, field; for (i=0; i<lines.length; i++) { if (lines[i] && lines[i] !== '') { field = lines[i].split(' '); entry = {}; j = 0; while (j < field.length) { if (field[j] === "") { field.splice(j, 1); } else { j++; } } entry.date = field[0] + " " + field[1]; entry.time = field[2]; entry.host = field[3]; entry.service = field[4].slice(0,-1); entry.message = field.slice(5).join(' '); entries.push(entry); } } // entry.date = process.argv[2] + " " + process.argv[3]; // entry.time = process.argv[4]; // entry.host = process.argv[5]; // entry.service = process.argv[6].slice(0,-1); // drop the trailing colon // entry.message = process.argv.slice(7).join(' '); var db; var reportInserted = function(err, result) { if (err) { throw err; } console.log("Inserted the following log record:"); console.log(result.ops); db.close(); } var connectCallback = function(err, returnedDB) { if (err) { throw err; } db = returnedDB; db.collection('logs').insert(entries, reportInserted); } mc.connect('mongodb://localhost/log-demo', connectCallback);