}
private static HostPort clusterFromConfig(TailerCmd args) throws IOException {
if (args.clustersFile == null) {
LOG.error("Cluster file not given");
new Help().run();
return null;
}
ObjectMapper objectMapper = new ObjectMapper();
File file = new File(args.clustersFile);
ClusterData clustersData = objectMapper.readValue(file, ClusterData.class);