How to use

index

method

in

com.yahoo.config.provision.ClusterSpec$Group

/** Move nodes from unwanted groups to wanted groups to avoid lingering groups consisting of retired nodes */
private void moveToActiveGroup(List<Node> surplusNodes, int wantedGroups, Optional<ClusterSpec.Group> targetGroup) {
  for (ListIterator<Node> i = surplusNodes.listIterator(); i.hasNext(); ) {
    Node node = i.next();
    ClusterMembership membership = node.allocation().get().membership();
    ClusterSpec cluster = membership.cluster();
    if (cluster.group().get().index() >= wantedGroups) {
      ClusterSpec.Group newGroup = targetGroup.orElse(ClusterSpec.Group.from(0));
      ClusterMembership newGroupMembership = membership.with(cluster.with(Optional.of(newGroup)));
      i.set(node.with(node.allocation().get().with(newGroupMembership)));
    }
  }
}

String groupIndex = String.valueOf(hostGroup.getKey().get().index());
StorageGroup subgroup = new StorageGroup(owner, groupIndex, groupIndex);
for (Map.Entry<HostResource, ClusterMembership> host : hostGroup.getValue().entrySet()) {

/**
 * Returns a list of the nodes which are
 * in groups with index number above or equal the group count
 */
private List<Node> findNodesInRemovableGroups(ApplicationId application, ClusterSpec requestedCluster, int wantedGroups) {
  List<Node> surplusNodes = new ArrayList<>(0);
  for (Node node : nodeRepository.getNodes(application, Node.State.active)) {
    ClusterSpec nodeCluster = node.allocation().get().membership().cluster();
    if ( ! nodeCluster.id().equals(requestedCluster.id())) continue;
    if ( ! nodeCluster.type().equals(requestedCluster.type())) continue;
    if (nodeCluster.group().get().index() >= wantedGroups)
      surplusNodes.add(node);
  }
  return surplusNodes;
}

protected String toStringValue() {
  return cluster.type().name() +
      "/" + cluster.id().value() +
      (cluster.group().isPresent() ? "/" + cluster.group().get().index() : "") +
      "/" + index +
      ( cluster.isExclusive() ? "/exclusive" : "") +
      ( retired ? "/retired" : "") +
      ( !cluster.rotations().isEmpty() ? "/" + rotationsAsString(cluster.rotations()) : "");
}

private void toSlime(ClusterMembership membership, Cursor object) {
  object.setString("clustertype", membership.cluster().type().name());
  object.setString("clusterid", membership.cluster().id().value());
  object.setString("group", String.valueOf(membership.cluster().group().get().index()));
  object.setLong("index", membership.index());
  object.setBool("retired", membership.retired());
}