HostConstSharedPtr RandomLoadBalancer::peekAnotherHost(LoadBalancerContext* context) {

  if (tooManyPreconnects(stashed_random_.size(), total_healthy_hosts_)) {

    return nullptr;

  }

  return peekOrChoose(context, true);

}

HostConstSharedPtr RandomLoadBalancer::chooseHostOnce(LoadBalancerContext* context) {

  return peekOrChoose(context, false);

}

HostConstSharedPtr RandomLoadBalancer::peekOrChoose(LoadBalancerContext* context, bool peek) {

  uint64_t random_hash = random(peek);

  const absl::optional<HostsSource> hosts_source = hostSourceToUse(context, random_hash);

  if (!hosts_source) {

    return nullptr;

  }

  const HostVector& hosts_to_use = hostSourceToHosts(*hosts_source);

  if (hosts_to_use.empty()) {

    return nullptr;

  }

  return hosts_to_use[random_hash % hosts_to_use.size()];

}