Package org.opennms.netmgt.threshd

Class BlobStoreAwareMonitor

java.lang.Object

org.opennms.netmgt.threshd.BlobStoreAwareMonitor

All Implemented Interfaces:

ThresholdStateMonitor

public class BlobStoreAwareMonitor
extends Object
implements ThresholdStateMonitor

This implementation tracks the in-memory states of thresholds while also being aware of their persistence. This allows for the encapsulation of atomic clear/reinitialize logic where both the in-memory and persisted copies of the state can be cleared together without clients of being aware.

Constructor Summary

Constructors

Constructor	Description
BlobStoreAwareMonitor(BlobStore blobStore)

Method Summary

Modifier and Type	Method	Description
void	reinitializeState(String stateKey)	Reinitialize a single state identified by the given key.
void	reinitializeStates()	Reinitialize all states currently tracked by this monitor.
void	trackState(String key, ReinitializableState state)	Track the given state identified by the given key.
void	withReadLock(Runnable r)	Run some arbitrary code while holding the lock to the state monitor.

Methods inherited from class java.lang.Object

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

Constructor Detail

BlobStoreAwareMonitor

public BlobStoreAwareMonitor(BlobStore blobStore)

Method Detail

trackState

public void trackState(String key,
                       ReinitializableState state)

Description copied from interface: ThresholdStateMonitor

Track the given state identified by the given key.

Specified by:

trackState in interface ThresholdStateMonitor

withReadLock

public void withReadLock(Runnable r)

Description copied from interface: ThresholdStateMonitor

Run some arbitrary code while holding the lock to the state monitor. This is used to block reinitialization while the given code is running.

Specified by:

withReadLock in interface ThresholdStateMonitor

reinitializeState

public void reinitializeState(String stateKey)

Description copied from interface: ThresholdStateMonitor

Reinitialize a single state identified by the given key.

Specified by:

reinitializeState in interface ThresholdStateMonitor

reinitializeStates

public void reinitializeStates()

Description copied from interface: ThresholdStateMonitor

Reinitialize all states currently tracked by this monitor.

Specified by:

reinitializeStates in interface ThresholdStateMonitor