Apache Logs to Json

apache_json.js

var fs = require('fs');

var start_fs = (new Date()).getTime();

var data = fs.readFileSync('./100_log', 'utf-8');

var start = (new Date()).getTime();

var log = data.split('\n').map(function (line) {
    var match = line.match(/\[([^\]]+)\] \[([^\]]+)\] \[([^ ]+) ([^\]]+)\] (.*)/);

    if (match === null) {
        return null;
    }

    return JSON.stringify({
        date: new Date(match[1]),
        type: match[2],
        ip: match[4],
        message: match[5]
    });
});

var duration = (new Date()).getTime() - start;

fs.writeFileSync('./100_log.json', log.reduce(function (prev, curr) {
    if (curr === null) {
        return prev;
    }
    return prev + curr + '\n';
}, ''), 'utf-8');

var duration_fs = (new Date()).getTime() - start_fs;

console.log('Parsed and encoded 100 lines:', duration, 'ms');
console.log('Time per line:', duration / 100, 'ms');

console.log('Read/Parsed/Encoded/Write 100 lines:', duration_fs, 'ms');