Package org.opennms.netmgt.bsm.daemon

Class Bsmd

java.lang.Object

org.opennms.netmgt.bsm.daemon.Bsmd

All Implemented Interfaces:

AlarmLifecycleListener, BusinessServiceStateChangeHandler, SpringServiceDaemon, org.springframework.beans.factory.DisposableBean, org.springframework.beans.factory.InitializingBean

public class Bsmd
extends Object
implements SpringServiceDaemon, BusinessServiceStateChangeHandler, AlarmLifecycleListener

This daemon is responsible for driving the Business Service state machine by: 1) Updating the state machine with Alarms when they are created, deleted or updated 2) Sending events on the event bus when the operational status of a Business Service changes 3) Reloading the Business Service configuration in the state machine when requested

Author:

jwhite

Field Summary

Fields

Modifier and Type	Field	Description
protected static long	DEFAULT_POLL_INTERVAL
static String	NAME
protected static String	POLL_INTERVAL_KEY
static long	RELOAD_DELAY

Constructor Summary

Constructors

Constructor	Description
Bsmd()

Method Summary

Modifier and Type	Method	Description
void	afterPropertiesSet()
void	destroy()
BusinessServiceStateMachine	getBusinessServiceStateMachine()
EventConfDao	getEventConfDao()
EventIpcManager	getEventIpcManager()
org.springframework.transaction.support.TransactionTemplate	getTransactionTemplate()
boolean	getVerifyReductionKeys()
void	handleAlarmSnapshot(List<OnmsAlarm> alarms)	Called periodically with a complete set of alarms as present in the database at the given timestamp.
void	handleBusinessServiceStateChanged(BusinessServiceGraph graph, BusinessService businessService, Status newStatus, Status prevStatus)	Called when the operational status of a business service was changed.
void	handleDeletedAlarm(int alarmId, String reductionKey)	Called when an alarm has been deleted.
void	handleNewOrUpdatedAlarm(OnmsAlarm alarm)	Called when an alarm has been created or updated.
void	handleReloadEvent(IEvent e)
void	postHandleAlarmSnapshot()	Called after AlarmLifecycleListener.handleAlarmSnapshot(java.util.List<org.opennms.netmgt.model.OnmsAlarm>) has been called on all the listeners, and after the session & transaction used to perform the snapshot has been closed.
void	preHandleAlarmSnapshot()	Called before the transaction is opened and the alarms are read for subsequent calls to AlarmLifecycleListener.handleAlarmSnapshot(java.util.List<org.opennms.netmgt.model.OnmsAlarm>).
void	serviceInterfaceOrNodeDeleted(IEvent e)
void	setBusinessServiceStateMachine(BusinessServiceStateMachine stateMachine)
void	setEventConfDao(EventConfDao eventConfDao)
void	setEventIpcManager(EventIpcManager eventIpcManager)
void	setTransactionTemplate(org.springframework.transaction.support.TransactionTemplate template)
void	setVerifyReductionKeys(boolean verify)
void	start()	start

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_POLL_INTERVAL

protected static final long DEFAULT_POLL_INTERVAL

See Also:

Constant Field Values

POLL_INTERVAL_KEY

protected static final String POLL_INTERVAL_KEY

See Also:

Constant Field Values

NAME

public static final String NAME

See Also:

Constant Field Values

RELOAD_DELAY

public static final long RELOAD_DELAY

See Also:

Constant Field Values

Constructor Detail

Bsmd

public Bsmd()

Method Detail

afterPropertiesSet

public void afterPropertiesSet()
                        throws Exception

Specified by:

afterPropertiesSet in interface org.springframework.beans.factory.InitializingBean

Throws:

Exception

start

public void start()
           throws Exception

Description copied from interface: SpringServiceDaemon

start

Specified by:

start in interface SpringServiceDaemon

Throws:

Exception - if any.

handleAlarmSnapshot

public void handleAlarmSnapshot(List<OnmsAlarm> alarms)

Description copied from interface: AlarmLifecycleListener

Called periodically with a complete set of alarms as present in the database at the given timestamp. This should be used to synchronize any state to ensure it matches what is currently in the database. Note that it is possible that the *current* state of alarms is different from the state at the time at which the snapshot was taken. Implementations should take this in consideration when performing any state synchronization. This method will be called while the related session & transaction that created the alarm are still open. All of the listeners are invoked serially, so the implementors should avoid blocking when possible.

Specified by:

handleAlarmSnapshot in interface AlarmLifecycleListener

Parameters:

alarms - canonical set of alarms in the database

preHandleAlarmSnapshot

public void preHandleAlarmSnapshot()

Description copied from interface: AlarmLifecycleListener

Called before the transaction is opened and the alarms are read for subsequent calls to AlarmLifecycleListener.handleAlarmSnapshot(java.util.List<org.opennms.netmgt.model.OnmsAlarm>). This can be used to trigger any necessary state tracking to accurately handle the snapshot results.

Specified by:

preHandleAlarmSnapshot in interface AlarmLifecycleListener

postHandleAlarmSnapshot

public void postHandleAlarmSnapshot()

Description copied from interface: AlarmLifecycleListener

Called after AlarmLifecycleListener.handleAlarmSnapshot(java.util.List<org.opennms.netmgt.model.OnmsAlarm>) has been called on all the listeners, and after the session & transaction used to perform the snapshot has been closed. This can be used to trigger any necessary post-processing of the results once the related session has been closed. This function may be called immediately after a call to AlarmLifecycleListener.preHandleAlarmSnapshot() if an error occurred while preparing the snapshot i.e. when opening the transaction.

Specified by:

postHandleAlarmSnapshot in interface AlarmLifecycleListener

handleNewOrUpdatedAlarm

public void handleNewOrUpdatedAlarm(OnmsAlarm alarm)

Description copied from interface: AlarmLifecycleListener

Called when an alarm has been created or updated. This method will be called while the related session & transaction that created the alarm are still open. All of the listeners are invoked serially, so the implementors should avoid blocking when possible.

Specified by:

handleNewOrUpdatedAlarm in interface AlarmLifecycleListener

Parameters:

alarm - a newly created or updated alarm

handleDeletedAlarm

public void handleDeletedAlarm(int alarmId,
                               String reductionKey)

Description copied from interface: AlarmLifecycleListener

Called when an alarm has been deleted. This method will be called while the related session & transaction that created the alarm are still open. All of the listeners are invoked serially, so the implementors should avoid blocking when possible.

Specified by:

handleDeletedAlarm in interface AlarmLifecycleListener

Parameters:

alarmId - id of the alarm that was deleted

reductionKey - reduction key of the alarm that was deleted

serviceInterfaceOrNodeDeleted

public void serviceInterfaceOrNodeDeleted(IEvent e)

handleBusinessServiceStateChanged

public void handleBusinessServiceStateChanged(BusinessServiceGraph graph,
                                              BusinessService businessService,
                                              Status newStatus,
                                              Status prevStatus)

Called when the operational status of a business service was changed.

Specified by:

handleBusinessServiceStateChanged in interface BusinessServiceStateChangeHandler

handleReloadEvent

public void handleReloadEvent(IEvent e)

destroy

public void destroy()

Specified by:

destroy in interface org.springframework.beans.factory.DisposableBean

setEventIpcManager

public void setEventIpcManager(EventIpcManager eventIpcManager)

getEventIpcManager

public EventIpcManager getEventIpcManager()

setEventConfDao

public void setEventConfDao(EventConfDao eventConfDao)

getEventConfDao

public EventConfDao getEventConfDao()

setTransactionTemplate

public void setTransactionTemplate(org.springframework.transaction.support.TransactionTemplate template)

getTransactionTemplate

public org.springframework.transaction.support.TransactionTemplate getTransactionTemplate()

setVerifyReductionKeys

public void setVerifyReductionKeys(boolean verify)

getVerifyReductionKeys

public boolean getVerifyReductionKeys()

setBusinessServiceStateMachine

public void setBusinessServiceStateMachine(BusinessServiceStateMachine stateMachine)

getBusinessServiceStateMachine

public BusinessServiceStateMachine getBusinessServiceStateMachine()