client.target(uris[0]).path("/raft/init").request().post(Entity.json(""));
client.target(uris[1]).path("/raft/init").request().post(Entity.json(""));
client.target(uris[2]).path("/raft/init").request().post(Entity.json(""));
new Prober(new Callable<Boolean>() {
@Override
public Boolean call() throws Exception {
return isLeader(client, uris[0]) || isLeader(client, uris[1]) || isLeader(client, uris[2]);
}
}).probe(10000);