com.spotify.helios.servicescommon

Interface ZooKeeperRegistrar

All Known Implementing Classes:

AgentZooKeeperRegistrar, MasterZooKeeperRegistrar

public interface ZooKeeperRegistrar

Method Summary

Modifier and Type	Method and Description
void	shutDown() Called upon shutdown
void	startUp() Called upon startup
boolean	tryToRegister(ZooKeeperClient client) Called when ZK client connects.

Method Detail

startUp

void startUp()
      throws Exception

Called upon startup

Throws:

Exception - If an unexpected error occurs.

shutDown

void shutDown()
       throws Exception

Called upon shutdown

Throws:

Exception - If an unexpected error occurs.

tryToRegister

boolean tryToRegister(ZooKeeperClient client)
               throws org.apache.zookeeper.KeeperException,
                      HostNotFoundException

Called when ZK client connects. Handler should attempt to do on connection initialization here.

Parameters:

client - The zookeeper client.

Returns:

if registration was successful

Throws:

org.apache.zookeeper.KeeperException - If an unexpected zookeeper error occurs.

HostNotFoundException - If the hostname we are trying to re-register as doesn't exist.