Class InMemoryEventLog

java.lang.Object

es.urjc.etsii.grafo.events.InMemoryEventLog

@Service
public class InMemoryEventLog
extends Object

Append-only in-memory event replay log.

Constructor Summary

Constructors

Constructor	Description
InMemoryEventLog()

Method Summary

Modifier and Type	Method	Description
void	append(EventEnvelope envelope)	Store a published event envelope.
EventEnvelope	getEvent(int id)	Get a single event by id.
List<EventEnvelope>	getEvents(int from, int to)	Get events in range [from, to).
EventEnvelope	getLastEvent()	Get the last published event.
int	size()	Count stored events.

Methods inherited from class Object

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

Constructor Details

InMemoryEventLog

public InMemoryEventLog()

Method Details

append

public void append(EventEnvelope envelope)

Store a published event envelope.

Parameters:

envelope - event envelope

getEvents

public List<EventEnvelope> getEvents(int from,
 int to)

Get events in range [from, to).

Parameters:

from - inclusive start index

to - exclusive end index

Returns:

event envelopes in the requested range

getEvent

public EventEnvelope getEvent(int id)

Get a single event by id.

Parameters:

id - event id

Returns:

event envelope

getLastEvent

public EventEnvelope getLastEvent()

Get the last published event.

Returns:

latest event envelope

size

public int size()

Count stored events.

Returns:

event count