@Override
public HostStatus getHostStatus(final String host) {
final ZooKeeperClient client = provider.get("getHostStatus");
if (!ZooKeeperRegistrarUtil.isHostRegistered(client, host)) {
log.warn("Host {} isn't registered in ZooKeeper.", host);
return null;
}
final boolean up = checkHostUp(client, host);
final HostInfo hostInfo = getHostInfo(client, host);
final AgentInfo agentInfo = getAgentInfo(client, host);
final Map<JobId, Deployment> tasks = getTasks(client, host);
final Map<JobId, TaskStatus> statuses = getTaskStatuses(client, host);
final Map<String, String> environment = getEnvironment(client, host);
final Map<String, String> labels = getLabels(client, host);
return HostStatus.newBuilder()
.setJobs(tasks)
.setStatuses(fromNullable(statuses).or(EMPTY_STATUSES))
.setHostInfo(hostInfo)
.setAgentInfo(agentInfo)
.setStatus(up ? UP : DOWN)
.setEnvironment(environment)
.setLabels(labels)
.build();
}