io.aeron.cluster.service

Class SnapshotDurationTracker

java.lang.Object

io.aeron.cluster.service.SnapshotDurationTracker

public class SnapshotDurationTracker
extends Object

Snapshot duration tracker that tracks maximum snapshot duration and also keeps count of how many times a predefined duration threshold is breached.

Constructor Summary

Constructors

Constructor and Description
SnapshotDurationTracker(AtomicCounter maxSnapshotDuration, AtomicCounter snapshotDurationThresholdExceededCount, long durationThresholdNs) Create a tracker to track max snapshot duration and breaches of a threshold.

Method Summary

Modifier and Type	Method and Description
AtomicCounter	maxSnapshotDuration() Get max snapshot duration counter.
void	onSnapshotBegin(long timeNanos) Called when snapshotting has started.
void	onSnapshotEnd(long timeNanos) Called when snapshot has been taken.
AtomicCounter	snapshotDurationThresholdExceededCount() Get counter tracking number of times durationThresholdNs was exceeded

Methods inherited from class java.lang.Object

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

Constructor Detail

SnapshotDurationTracker

public SnapshotDurationTracker(AtomicCounter maxSnapshotDuration,
                               AtomicCounter snapshotDurationThresholdExceededCount,
                               long durationThresholdNs)

Create a tracker to track max snapshot duration and breaches of a threshold.

Parameters:

maxSnapshotDuration - counter for tracking.

snapshotDurationThresholdExceededCount - counter for tracking.

durationThresholdNs - to use for tracking breaches.

Method Detail

maxSnapshotDuration

public AtomicCounter maxSnapshotDuration()

Get max snapshot duration counter.

Returns:

max snapshot duration counter.

snapshotDurationThresholdExceededCount

public AtomicCounter snapshotDurationThresholdExceededCount()

Get counter tracking number of times durationThresholdNs was exceeded

Returns:

duration threshold exceeded counter.

onSnapshotBegin

public void onSnapshotBegin(long timeNanos)

Called when snapshotting has started.

Parameters:

timeNanos - snapshot start time in nanoseconds.

onSnapshotEnd

public void onSnapshotEnd(long timeNanos)

Called when snapshot has been taken.

Parameters:

timeNanos - snapshot end time in nanoseconds.