org.opennms.netmgt.vacuumd
Class Vacuumd

java.lang.Object
  org.opennms.netmgt.vacuumd.Vacuumd

All Implemented Interfaces:

Fiber, PausableFiber, java.lang.Runnable

public class Vacuumd

extends java.lang.Object

implements PausableFiber, java.lang.Runnable

Implements a daemon whose job it is to run periodic updates against the database for database maintenance work.

Field Summary

private static java.lang.String	LOG4J_CATEGORY The log4j category used to log debug messsages and statements.
private static Vacuumd	m_singleton
private long	m_startTime
private int	m_status
private boolean	m_stopped
private java.lang.Thread	m_thread

Fields inherited from interface org.opennms.core.fiber.PausableFiber

PAUSE_PENDING, PAUSED, RESUME_PENDING

Fields inherited from interface org.opennms.core.fiber.Fiber

RUNNING, START_PENDING, STARTING, STATUS_NAMES, STOP_PENDING, STOPPED

Constructor Summary

Vacuumd()

Method Summary

java.lang.String	getName() This method is used to return the name of the Fiber.
static Vacuumd	getSingleton()
int	getStatus() This method is used to get the current status of the Fiber.
void	init()
void	pause() This method is used to suspend a currently running Fiber.
void	resume() This method is used to resume a suspeneded Fiber.
void	run()
void	runUpdate(java.lang.String sql)
void	start() This method is used to start the initilization process of the Fiber, which should eventually transition to a RUNNING status.
void	stop() This method is used to stop a currently running Fiber.

Methods inherited from class java.lang.Object

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

Field Detail

LOG4J_CATEGORY

private static final java.lang.String LOG4J_CATEGORY

The log4j category used to log debug messsages and statements.

See Also:

Constant Field Values

m_singleton

private static Vacuumd m_singleton

m_thread

private java.lang.Thread m_thread

m_startTime

private long m_startTime

m_stopped

private boolean m_stopped

m_status

private int m_status

Constructor Detail

Vacuumd

public Vacuumd()

Method Detail

getSingleton

public static Vacuumd getSingleton()

init

public void init()

start

public void start()

Description copied from interface: Fiber

This method is used to start the initilization process of the Fiber, which should eventually transition to a RUNNING status.

Specified by:

start in interface Fiber

stop

public void stop()

Description copied from interface: Fiber

This method is used to stop a currently running Fiber. Once invoked the Fiber should begin it's shutdown process. Depending on the implementation, this method may block until the Fiber terminates.

Specified by:

stop in interface Fiber

pause

public void pause()

Description copied from interface: PausableFiber

This method is used to suspend a currently running Fiber. When invoked the Fiber will begin the transition to a PAUSED status after changing its internal state, if applicable.

Specified by:

pause in interface PausableFiber

resume

public void resume()

Description copied from interface: PausableFiber

This method is used to resume a suspeneded Fiber. If the thread is already running then this method should have no effect on the current Fiber.

Specified by:

resume in interface PausableFiber

getName

public java.lang.String getName()

Description copied from interface: Fiber

This method is used to return the name of the Fiber. The name of the instance is defined by the implementor, but it should be realitively unique when possible.

Specified by:

getName in interface Fiber

Returns:

The name of the Fiber.

getStatus

public int getStatus()

Description copied from interface: Fiber

This method is used to get the current status of the Fiber. The status of the fiber should be one of the predefined constants of the Fiber interface, or from one of the derived interfaces.

Specified by:

getStatus in interface Fiber

Returns:

The current status of the Fiber.

run

public void run()

Specified by:

run in interface java.lang.Runnable

runUpdate

public void runUpdate(java.lang.String sql)