hydra

Class HostAgentMgr

java.lang.Object

hydra.HostAgentMgr

public class HostAgentMgr
extends Object

Manages hostagents for master.

Constructor Summary

Constructors

Constructor and Description
HostAgentMgr()

Method Summary

Modifier and Type	Method and Description
protected static HostAgentIF	getHostAgent(String host) Returns the hostagent for the specified host.
protected static String	getNukePIDCommand(String host) Used to fetch the nuke command from nukerun for a hostagent for use after a reboot.
static HostAgentIF	getRemoteHostAgentForClient(String host) Returns the hostagent for the specified host for a remote client.
protected static void	registerHostAgent(HostAgentRecord har) Used by hostagents to register and go live so master can use them.
protected static void	restartHostAgent(String host) Used to restore a hostagent lost in a reboot.
protected static void	shutDownAllHostAgents() Tells all hostagents to exit.
protected static void	startHostAgents(Map hads) Fires up hostagent processes from a set of hosts and waits for them to register with the master.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HostAgentMgr

public HostAgentMgr()

Method Detail

startHostAgents

protected static void startHostAgents(Map hads)

Fires up hostagent processes from a set of hosts and waits for them to register with the master. Computes clock skew information for each host. The hostagent on the master host runs in-process.

Parameters:

hads - the hostagent descriptions.

getNukePIDCommand

protected static String getNukePIDCommand(String host)

Used to fetch the nuke command from nukerun for a hostagent for use after a reboot.

restartHostAgent

protected static void restartHostAgent(String host)

Used to restore a hostagent lost in a reboot. Updating the nukerun script is handled in the ClientMgr.

registerHostAgent

protected static void registerHostAgent(HostAgentRecord har)

Used by hostagents to register and go live so master can use them.

getHostAgent

protected static HostAgentIF getHostAgent(String host)

Returns the hostagent for the specified host.

getRemoteHostAgentForClient

public static HostAgentIF getRemoteHostAgentForClient(String host)

Returns the hostagent for the specified host for a remote client. This method is invoked in the master from a client through the master proxy only when the host is remote from the client.

shutDownAllHostAgents

protected static void shutDownAllHostAgents()

Tells all hostagents to exit. Does not wait for processes to die.