How to use

AbstractMappingPartitionAssigner$HostAndIndexInRing

in

com.liveramp.hank.partition_assigner

validHosts.add(new HostAndIndexInRing(host, hostIndex));

result.put(hostAndIndex.getHost(), new ArrayList<Integer>());

 private Map<Integer, Host> getPartitionAssignment(int numPartitions, Host... hosts) {
  List<AbstractMappingPartitionAssigner.HostAndIndexInRing> hostAndIndexInRings = new ArrayList<AbstractMappingPartitionAssigner.HostAndIndexInRing>();
  for (int i = 0; i < hosts.length; ++i) {
   Host host = hosts[i];
   if (host != null) {
    hostAndIndexInRings.add(new AbstractMappingPartitionAssigner.HostAndIndexInRing(host, i));
   }
  }
  RendezVousPartitionAssigner partitionAssigner = new RendezVousPartitionAssigner();
  Domain domain = new MockDomain("domain", 0, numPartitions, null, null, null, null);
  return partitionAssigner.getPartitionsAssignment(domain, hostAndIndexInRings);
 }
}

private HostAndPartitionRendezVous(Domain domain, int partitionId, HostAndIndexInRing hostAndIndexInRing) {
 this.host = hostAndIndexInRing.getHost();
 this.rendezVousHashValue = computeRendezVousHashValue(domain, partitionId, hostAndIndexInRing.getIndexInRing());
}

 protected Host getHostResponsibleForPartition(List<HostAndIndexInRing> validHostsSorted, int partitionNumber) {
  int hostIndex = partitionNumber % validHostsSorted.size();
  return validHostsSorted.get(hostIndex).getHost();
 }
}