How to use

setLocationInfo

method

in

com.datastax.driver.core.Host

private static void updateLocationInfo(
  Host host,
  String datacenter,
  String rack,
  boolean isInitialConnection,
  Cluster.Manager cluster) {
 if (MoreObjects.equal(host.getDatacenter(), datacenter)
   && MoreObjects.equal(host.getRack(), rack)) return;
 // If the dc/rack information changes for an existing node, we need to update the load balancing
 // policy.
 // For that, we remove and re-add the node against the policy. Not the most elegant, and assumes
 // that the policy will update correctly, but in practice this should work.
 if (!isInitialConnection) cluster.loadBalancingPolicy().onDown(host);
 host.setLocationInfo(datacenter, rack);
 if (!isInitialConnection) cluster.loadBalancingPolicy().onAdd(host);
}

private static void updateLocationInfo(Host host, String datacenter, String rack, Cluster.Manager cluster) {
  if (Objects.equal(host.getDatacenter(), datacenter) && Objects.equal(host.getRack(), rack))
    return;
  // If the dc/rack information changes, we need to update the load balancing policy.
  // For that, we remove and re-add the node against the policy. Not the most elegant, and assumes
  // that the policy will update correctly, but in practice this should work.
  cluster.loadBalancingPolicy().onDown(host);
  host.setLocationInfo(datacenter, rack);
  cluster.loadBalancingPolicy().onAdd(host);
}

private static void updateLocationInfo(Host host, String datacenter, String rack, boolean isInitialConnection, Cluster.Manager cluster) {
  if (Objects.equal(host.getDatacenter(), datacenter) && Objects.equal(host.getRack(), rack))
    return;
  // If the dc/rack information changes for an existing node, we need to update the load balancing policy.
  // For that, we remove and re-add the node against the policy. Not the most elegant, and assumes
  // that the policy will update correctly, but in practice this should work.
  if (!isInitialConnection)
    cluster.loadBalancingPolicy().onDown(host);
  host.setLocationInfo(datacenter, rack);
  if (!isInitialConnection)
    cluster.loadBalancingPolicy().onAdd(host);
}

private static void updateLocationInfo(Host host, String datacenter, String rack, boolean isInitialConnection, Cluster.Manager cluster) {
  if (Objects.equal(host.getDatacenter(), datacenter) && Objects.equal(host.getRack(), rack))
    return;
  // If the dc/rack information changes for an existing node, we need to update the load balancing policy.
  // For that, we remove and re-add the node against the policy. Not the most elegant, and assumes
  // that the policy will update correctly, but in practice this should work.
  if (!isInitialConnection)
    cluster.loadBalancingPolicy().onDown(host);
  host.setLocationInfo(datacenter, rack);
  if (!isInitialConnection)
    cluster.loadBalancingPolicy().onAdd(host);
}

private static void updateLocationInfo(Host host, String datacenter, String rack, boolean isInitialConnection, Cluster.Manager cluster) {
  if (MoreObjects.equal(host.getDatacenter(), datacenter) && MoreObjects.equal(host.getRack(), rack))
    return;
  // If the dc/rack information changes for an existing node, we need to update the load balancing policy.
  // For that, we remove and re-add the node against the policy. Not the most elegant, and assumes
  // that the policy will update correctly, but in practice this should work.
  if (!isInitialConnection)
    cluster.loadBalancingPolicy().onDown(host);
  host.setLocationInfo(datacenter, rack);
  if (!isInitialConnection)
    cluster.loadBalancingPolicy().onAdd(host);
}