com.dynatrace.openkit.core.caching

Class BeaconCacheEvictor

java.lang.Object

com.dynatrace.openkit.core.caching.BeaconCacheEvictor

public class BeaconCacheEvictor
extends java.lang.Object

Class responsible for handling an eviction thread, to ensure BeaconCache stays in configured boundaries.

Constructor Summary

Constructors

Constructor and Description
BeaconCacheEvictor(Logger logger, BeaconCache beaconCache, BeaconCacheConfiguration configuration, TimingProvider timingProvider) Public constructor, initializing the eviction thread with the default TimeEvictionStrategy and SpaceEvictionStrategy strategies.

Method Summary

Modifier and Type	Method and Description
boolean	isAlive()
boolean	start() Starts the eviction thread.
boolean	stop() Stops the eviction thread and joins with EVICTION_THREAD_JOIN_TIMEOUT.
boolean	stop(long timeout) Stops the eviction thread via Thread.interrupt(), if it's alive and joins the eviction thread with given timeout.

Methods inherited from class java.lang.Object

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

Constructor Detail

BeaconCacheEvictor

public BeaconCacheEvictor(Logger logger,
                          BeaconCache beaconCache,
                          BeaconCacheConfiguration configuration,
                          TimingProvider timingProvider)

Public constructor, initializing the eviction thread with the default TimeEvictionStrategy and SpaceEvictionStrategy strategies.

Parameters:

logger - Logger to write some debug output

beaconCache - The Beacon cache to check if entries need to be evicted

configuration - Beacon cache configuration

timingProvider - Timing provider required for time retrieval

Method Detail

start

public boolean start()

Starts the eviction thread.

Returns:

true if the eviction thread was started, false if the thread was already running.

stop

public boolean stop()

Stops the eviction thread and joins with EVICTION_THREAD_JOIN_TIMEOUT.

See also stop(long).

stop

public boolean stop(long timeout)

Stops the eviction thread via Thread.interrupt(), if it's alive and joins the eviction thread with given timeout.

Parameters:

timeout - The number of milliseconds to join the thread.

Returns:

true if stopping was successful, false if eviction thread is not running or could not be stopped in time.

isAlive

public boolean isAlive()