Package org.projectnessie.events.service

Class ResultCollector

java.lang.Object

org.projectnessie.events.service.ResultCollector

All Implemented Interfaces:

Consumer<org.projectnessie.versioned.Result>

public class ResultCollector
extends Object
implements Consumer<org.projectnessie.versioned.Result>

A collector for Results produced by the version store.

Instances of this class are meant to be injected into version stores to collect results.

The main reason why this functionality is not part of the EventService is that EventService is meant to be a singleton, while ResultCollector is meant to be instantiated per request, in order to capture the user principal that initiated the request, and the target repository id.

Field Summary

Fields

Modifier and Type	Field	Description
protected final Consumer<VersionStoreEvent>	destination
protected final String	repositoryId
protected final EventSubscribers	subscribers
protected final Principal	user

Constructor Summary

Constructors

Constructor	Description
ResultCollector(EventSubscribers subscribers, String repositoryId, Principal user, Consumer<VersionStoreEvent> destination)	Creates a new instance that forwards received Results to the given Consumer, allowing implementers to control how the event is delivered to the EventService.
ResultCollector(EventSubscribers subscribers, String repositoryId, Principal user, EventService destination)	Creates a new instance that forwards received Results to the given EventService synchronously.

Method Summary

Modifier and Type	Method	Description
void	accept(org.projectnessie.versioned.Result result)	Called when a result is produced by the version store.
protected void	forwardToEventService(VersionStoreEvent event)	Forwards the received VersionStoreEvent to the destination for delivery to subscribers.
protected boolean	shouldProcess(org.projectnessie.versioned.Result result)	Returns true if the given Result should be processed.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Consumer

andThen

Field Details

subscribers

protected final EventSubscribers subscribers

repositoryId

protected final String repositoryId

user

protected final Principal user

destination

protected final Consumer<VersionStoreEvent> destination

Constructor Details

ResultCollector

public ResultCollector(EventSubscribers subscribers,
 String repositoryId,
 Principal user,
 EventService destination)

Creates a new instance that forwards received Results to the given EventService synchronously.

ResultCollector

public ResultCollector(EventSubscribers subscribers,
 String repositoryId,
 Principal user,
 Consumer<VersionStoreEvent> destination)

Creates a new instance that forwards received Results to the given Consumer, allowing implementers to control how the event is delivered to the EventService.

Method Details

accept

public void accept(org.projectnessie.versioned.Result result)

Called when a result is produced by the version store.

Specified by:

accept in interface Consumer<org.projectnessie.versioned.Result>

shouldProcess

protected boolean shouldProcess(org.projectnessie.versioned.Result result)

Returns true if the given Result should be processed.

This acts as an early filter to remove results that are not relevant to any of the subscribers.

forwardToEventService

protected void forwardToEventService(VersionStoreEvent event)

Forwards the received VersionStoreEvent to the destination for delivery to subscribers.