org.opennms.netmgt.rtc

Class RTCManager

java.lang.Object

org.opennms.netmgt.daemon.AbstractServiceDaemon

org.opennms.netmgt.rtc.RTCManager

All Implemented Interfaces:

Fiber, PausableFiber, SpringServiceDaemon, ServiceDaemon, org.springframework.beans.factory.DisposableBean, org.springframework.beans.factory.InitializingBean

public final class RTCManager
extends AbstractServiceDaemon

Maintains calculations for categories.

The RTCManager maintains data required so as to calculate availability for the different categories configured in categories.xml

The RTC initializes its data from the database when it comes up. It then subscribes to the Events subsystem to receive events of interest to keep the data up-to-date

Availability data is sent out to listeners who indicate that they are listening by sending an RTC 'subscribe' event. The subscribe event has an URL and user/passwd info. so RTC can post data to the URL

The RTC has two timers(a low threshold and a high threshold) and a counter that can run upto a configurable max number of events - these are used to determine when availability information is to be sent out when event streams are coming in at normal rates. When no events are received, a timer configured with a user configured time(defaulting to one minute) decides the interval at which data is sent

Author:

Sowmya Kumaraswamy , OpenNMS.org

See Also:

RTCConstants, DataSender, DataManager

Field Summary

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

Constructors

Constructor and Description
RTCManager() The constructor for the RTCManager

Method Summary

Methods

Modifier and Type	Method and Description
void	checkTimerTasksOnEventReceipt() Check the timer tasks.
static Map<String,RTCCategory>	getCategories() Gets the categories.
static DataManager	getDataManager() Gets the data manager.
org.opennms.netmgt.rtc.DataSender	getDataSender() Get the data sender.
static RTCManager	getInstance() Gets the instance of the RTCmanager.
static long	getRollingWindow() Gets the rolling window.
void	incrementCounter() Updates the number of events received.
protected void	onInit() onInit
protected void	onStart() onStart
protected void	onStop() onStop
void	resetUserTimer() Reset the user timer.
static void	setDataManager(DataManager dataMgr) Sets the data manager.

Methods inherited from class org.opennms.netmgt.daemon.AbstractServiceDaemon

afterPropertiesSet, destroy, getName, getStatus, getStatusText, init, isPaused, isRunning, isStarting, onPause, onResume, pause, resume, setStatus, start, status, stop, waitForStatus, waitForStatus

Methods inherited from class java.lang.Object

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

Constructor Detail

RTCManager

public RTCManager()

The constructor for the RTCManager

Method Detail

checkTimerTasksOnEventReceipt

public void checkTimerTasksOnEventReceipt()

Check the timer tasks. Reset any of the timer tasks if they need to be reset (indicated by their being set to null on timer task completion). If the events counter has exceeded maxEventsBeforeResend, send data out and reset timers

resetUserTimer

public void resetUserTimer()

Reset the user timer.

onInit

protected void onInit()

onInit

Specified by:

onInit in class AbstractServiceDaemon

onStart

protected void onStart()

onStart

Overrides:

onStart in class AbstractServiceDaemon

onStop

protected void onStop()

onStop

Overrides:

onStop in class AbstractServiceDaemon

incrementCounter

public void incrementCounter()

Updates the number of events received. Increment the counter that keeps track of number of events received since data was last sent out

getDataSender

public org.opennms.netmgt.rtc.DataSender getDataSender()

Get the data sender.

Returns:

the data sender

getCategories

public static Map<String,RTCCategory> getCategories()

Gets the categories.

Returns:

the categories

getDataManager

public static DataManager getDataManager()

Gets the data manager.

Returns:

the data manager

setDataManager

public static void setDataManager(DataManager dataMgr)

Sets the data manager.

Parameters:

dataMgr - a DataManager object.

getRollingWindow

public static long getRollingWindow()

Gets the rolling window.

Returns:

the configured rolling window

getInstance

public static RTCManager getInstance()

Gets the instance of the RTCmanager.

Returns:

the RTCManager singleton.