package org.infinispan.remoting.responses;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import org.infinispan.remoting.rpc.ResponseFilter;
import org.infinispan.remoting.transport.Address;
/**
* A filter that only expects responses from an initial set of targets.
*
* Useful when sending a command to {@code null} to ensure we don't wait for responses from
* cluster members that weren't properly started when the command was sent.
*
* JGroups calls our handler while holding a lock, so we don't need any synchronization.
*
* @author Dan Berindei <dan@infinispan.org>
* @since 5.1
*/
public final class IgnoreExtraResponsesValidityFilter implements ResponseFilter {
private final Set<Address> targets;
private int missingResponses;
public IgnoreExtraResponsesValidityFilter(Collection<Address> targets, Address self, boolean removeSelf) {
this.targets = new HashSet<Address>(targets);
this.missingResponses = targets.size();
if (removeSelf && this.targets.contains(self)) {
missingResponses--;
}
}
@Override
public boolean isAcceptable(Response response, Address address) {
if (targets.contains(address)) {
missingResponses--;
}
// always return true to make sure a response is logged by the JGroups RpcDispatcher.
return true;
}
@Override
public boolean needMoreResponses() {
return missingResponses > 0;
}
}