parses aws elb logs to filter out non-composite requests

composite_log_parser.js

let count = 0;
fs.readFileSync('./07-11-log-pull.log').toString().split('\n').forEach(function (l) { 
    try{
      const tsvFile = /(?<=GET).*$/;
      const d = tsvFile.exec(l);
      if (d) {
        const v = d[0].split(' ')[1].split('/')[4];
        const mapidCount = v ? v.split(',').length : 0; 
        if (mapidCount > 1){
          count+=1;
          console.log('count!', count);
          fs.appendFileSync("./07-11-composite-requests.log", l + "\n");
        }
      }
    } catch(e){
      console.log('ERROR', e);
    }
});