Replicate Npm Registry Monitor script

replicate.js

var nano = require('nano')('http://localhost:5984');

function checkTasks(cb) {
  nano.request({ path: '_active_tasks'}, cb);
}

function replicateNpm(cb) {
  nano.db.replicate('http://isaacs.iriscouch.com/registry', 'registry',
    { continuous: true,
      worker_processes: 10,
      http_connections: 60}, cb);
}

function renewReplication(cb) {
  checkTasks(function(e,b) {
    if (e) { return cb(e); }
    if (b.length > 0) { return cb(null, b); }
    replicateNpm(cb);
  });
}

function main() {
  renewReplication(function(e,b) {
    if (e) { return console.log(e); }
    console.log(b);
    setTimeout(main, 60000);
  });
}

main();

Thx for this one :D