Method getDistance

lib/execution-profile.js:181–196

* Uses the load-balancing policies to get the relative distance to the host and return the closest one. * @param {Host} host

(host)

   * @param {Host} host
   */
  getDistance(host) {
    let distance = types.distance.ignored;
    // this is performance critical: we can't use any other language features than for-loop :(
    for (let i = 0; i < this._loadBalancingPolicies.length; i++) {
      const d = this._loadBalancingPolicies[i].getDistance(host);
      if (d < distance) {
        distance = d;
        if (distance === types.distance.local) {
          break;
        }
      }
    }

    host.setDistance(distance);
    return distance;
  }

  /**
   * @param {String|ExecutionProfile} name