Package org.apache.iotdb.confignode.manager.load.cache

Class AbstractLoadCache

java.lang.Object

org.apache.iotdb.confignode.manager.load.cache.AbstractLoadCache

Direct Known Subclasses:

BaseNodeCache, ConsensusGroupCache, RegionCache

public abstract class AbstractLoadCache
extends Object

AbstractLoadCache caches the recent MAXIMUM_WINDOW_SIZE heartbeat samples and calculates the current statistics based on the latest heartbeat mple.

Field Summary

Fields

Modifier and Type	Field	Description
protected final AtomicReference<AbstractStatistics>	currentStatistics
protected final IFailureDetector	failureDetector
protected final List<AbstractHeartbeatSample>	slidingWindow

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractLoadCache()

Method Summary

Modifier and Type	Method	Description
void	cacheHeartbeatSample(AbstractHeartbeatSample newHeartbeatSample)	Cache the latest heartbeat sample.
AbstractStatistics	getCurrentStatistics()
AbstractHeartbeatSample	getLastSample()	Get the latest heartbeat sample that cached in the slidingWindow.
abstract void	updateCurrentStatistics(boolean forceUpdate)	Update currentStatistics based on the latest heartbeat sample that cached in the slidingWindow.

Methods inherited from class java.lang.Object

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

Field Details

slidingWindow

protected final List<AbstractHeartbeatSample> slidingWindow

currentStatistics

protected final AtomicReference<AbstractStatistics> currentStatistics

failureDetector

protected final IFailureDetector failureDetector

Constructor Details

AbstractLoadCache

protected AbstractLoadCache()

Method Details

cacheHeartbeatSample

public void cacheHeartbeatSample(AbstractHeartbeatSample newHeartbeatSample)

Cache the latest heartbeat sample.

Parameters:

newHeartbeatSample - The latest heartbeat sample.

getLastSample

public AbstractHeartbeatSample getLastSample()

Get the latest heartbeat sample that cached in the slidingWindow.

Returns:

The latest heartbeat sample.

updateCurrentStatistics

public abstract void updateCurrentStatistics(boolean forceUpdate)

Update currentStatistics based on the latest heartbeat sample that cached in the slidingWindow.

getCurrentStatistics

public AbstractStatistics getCurrentStatistics()