nodejs logger

logger.js

http = require('http');
fs = require('fs');
blockWriter = {};
blockWriter.arr = [];
blockWriter.count = 0;
blockWriter.countLimit = 10;
blockWriter.blockLog = "";

server = http.createServer( function(req, res) {

  if (req.method == 'POST') {
    var body = '';
    req.on('data', function (data) {
      body += data;
    });
    req.on('end', function () {
      blockWriter.arr.push(body);
      blockWriter.count++;

      if (blockWriter.count === blockWriter.countLimit) {
          blockWriter.blockLog += blockWriter.arr.join('\n');
          fs.appendFile('./log.txt', blockWriter.blockLog, function(error) {
            if (error) console.log(error);
          });
          blockWriter.count = 0;
          blockWriter.arr = [];
          blockWriter.blockLog = "\n";
        }
    });
    res.writeHead(200, {'Content-Type': 'text/html'});
    res.end('post received');
  }
});

port = 3000;
host = '127.0.0.1';
server.listen(port, host);
console.log('listening at http://' + host + ':' + port);