Class InMemoryJSentinelVersionStore

java.lang.Object

com.svenruppert.jsentinel.session.InMemoryJSentinelVersionStore

All Implemented Interfaces:

JSentinelVersionStore

@ExperimentalJSentinelApi
public final class InMemoryJSentinelVersionStore
extends Object
implements JSentinelVersionStore

In-memory JSentinelVersionStore backed by a ConcurrentHashMap. Atomic increments through ConcurrentHashMap.compute(Object, java.util.function.BiFunction).

Constructor Summary

Constructors

Constructor	Description
InMemoryJSentinelVersionStore()	Creates an empty store.

Method Summary

Modifier and Type	Method	Description
JSentinelVersion	current(JSentinelVersionKey key)	Returns the current JSentinelVersion associated with key.
JSentinelVersion	increment(JSentinelVersionKey key)	Atomically bumps the version for key by one and returns the new value.
void	reset(JSentinelVersionKey key)	Resets the version for key to JSentinelVersion.INITIAL.

Methods inherited from class Object

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

Constructor Details

InMemoryJSentinelVersionStore

public InMemoryJSentinelVersionStore()

Creates an empty store.

Method Details

current

public JSentinelVersion current(JSentinelVersionKey key)

Description copied from interface: JSentinelVersionStore

Returns the current JSentinelVersion associated with key. Returns JSentinelVersion.INITIAL when the key has never been incremented (i.e. the subject is fresh).

Specified by:

current in interface JSentinelVersionStore

Parameters:

key - tenant + subject; must not be null

Returns:

current version, never null

increment

public JSentinelVersion increment(JSentinelVersionKey key)

Description copied from interface: JSentinelVersionStore

Atomically bumps the version for key by one and returns the new value. The very first call on a key transitions JSentinelVersion.INITIAL to value 1.

Specified by:

increment in interface JSentinelVersionStore

Parameters:

key - tenant + subject; must not be null

Returns:

the new (post-increment) version

reset

public void reset(JSentinelVersionKey key)

Description copied from interface: JSentinelVersionStore

Resets the version for key to JSentinelVersion.INITIAL. No-op when no value was ever recorded.

Specified by:

reset in interface JSentinelVersionStore

Parameters:

key - tenant + subject; must not be null