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Interface Guardian.GuardContext

All Known Implementing Classes:

GuardSupport.Context

Enclosing interface:

Guardian

public static interface Guardian.GuardContext

A GuardContext represents the lifecycle status of a Guardable. The GuardContext is the point of coordination between the Guardian and the Guardable.

Field Summary

static int	STATE_HEALTHY State value indicating the Guardable is healthy/responsive.
static int	STATE_RECOVERY State value indicating that recovery of the Guardable is underway.
static int	STATE_TERMINATING State value indicating that the Guardable is being terminated.

Method Summary

Guardable	getGuardable() Return the Guardable for this context.
Guardian	getGuardian() Return the Guardian for this context.
long	getSoftTimeoutMillis() Return the soft timeout interval for the represented Guardable.
int	getState() Return the state of the Guardable.
void	heartbeat() Called by the Guardable to signal that it is still alive.
void	heartbeat(long cMillis) Called by the Guardable to signal that it is still alive, and that it should not be considered timed out for the specified number of milliseconds.
void	release() Release this context, causing the Guardian to discontinue monitoring of the represented Guardable.

Field Detail

STATE_HEALTHY

static final int STATE_HEALTHY

State value indicating the Guardable is healthy/responsive.

See Also:

Constant Field Values

STATE_RECOVERY

static final int STATE_RECOVERY

State value indicating that recovery of the Guardable is underway.

See Also:

Constant Field Values

STATE_TERMINATING

static final int STATE_TERMINATING

State value indicating that the Guardable is being terminated.

See Also:

Constant Field Values

Method Detail

getGuardian

Guardian getGuardian()

Return the Guardian for this context.

Returns:

the Guardian for this context

getGuardable

Guardable getGuardable()

Return the Guardable for this context.

Returns:

the Guardable for this context

heartbeat

void heartbeat()

Called by the Guardable to signal that it is still alive.

heartbeat

void heartbeat(long cMillis)

Called by the Guardable to signal that it is still alive, and that it should not be considered timed out for the specified number of milliseconds.

Parameters:

cMillis - the number of milliseconds for which the guardable should not be considered timed out

getState

int getState()

Return the state of the Guardable. Valid values are STATE_* constants.

Returns:

the state of the Guardable

release

void release()

Release this context, causing the Guardian to discontinue monitoring of the represented Guardable.

getSoftTimeoutMillis

long getSoftTimeoutMillis()

Return the soft timeout interval for the represented Guardable.

The soft timeout interval is the amount of time that must pass after the last received heartbeat before a recovery attempt is made.

Returns:

the soft timeout interval for the represented Guardable

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