com.threerings.presents.server

Class RebootManager

java.lang.Object

com.threerings.presents.server.RebootManager

public abstract class RebootManager
extends Object

Handles scheduling and execution of automated server reboots. Note that this service simply shuts down the server and assumes it will be automatically restarted by some external entity. It is generally useful to run a server from a script that automatically restarts it when it terminates.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	RebootManager.PendingShutdownObserver An interface for receiving notifications about pending automated shutdowns.

Field Summary

Fields

Modifier and Type	Field and Description
static int[]	DEFAULT_WARNINGS The default warning times.

Method Summary

Modifier and Type	Method and Description
void	addObserver(RebootManager.PendingShutdownObserver observer) Add an observer to the observer list.
void	allowReboot(int lockId) Release a reboot lock.
void	cancelReboot() Cancel the currently scheduled reboot, if any.
int[]	getWarnings() Returns the minutes at which we give warnings.
void	init() Finishes initialization of the manager.
int	preventReboot(String whereFrom) Called by an entity that would like to prevent a reboot.
void	scheduleReboot(long rebootTime, String initiator) Schedules a reboot for the specified time.
boolean	scheduleRegularReboot() Schedules our next regularly scheduled reboot.
boolean	willShutdownSoon() Is the manager planning a shutdown in the near future?

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_WARNINGS

public static final int[] DEFAULT_WARNINGS

The default warning times.

Method Detail

init

public void init()

Finishes initialization of the manager.

scheduleRegularReboot

public boolean scheduleRegularReboot()

Schedules our next regularly scheduled reboot.

Returns:

true if a reboot was scheduled, false if regularly scheduled reboots are disabled.

willShutdownSoon

public boolean willShutdownSoon()

Is the manager planning a shutdown in the near future?

addObserver

public void addObserver(RebootManager.PendingShutdownObserver observer)

Add an observer to the observer list.

cancelReboot

public void cancelReboot()

Cancel the currently scheduled reboot, if any.

scheduleReboot

public void scheduleReboot(long rebootTime,
                           String initiator)

Schedules a reboot for the specified time.

preventReboot

public int preventReboot(String whereFrom)

Called by an entity that would like to prevent a reboot.

allowReboot

public void allowReboot(int lockId)

Release a reboot lock.

getWarnings

public int[] getWarnings()

Returns the minutes at which we give warnings. The last value is also the minimum time at which we can possibly reboot after the value of the nextReboot field is changed, to prevent accidentally causing instant server reboots.