org.infinispan.remoting.responses.ClusteredGetResponseValidityFilter Maven / Gradle / Ivy
package org.infinispan.remoting.responses;
import org.infinispan.remoting.rpc.ResponseFilter;
import org.infinispan.remoting.transport.Address;
import java.util.Collection;
import java.util.HashSet;
/**
* A filter that tests the validity of {@link org.infinispan.commands.remote.ClusteredGetCommand}s.
*
* JGroups calls our handler while holding a lock, so we don't need any synchronization.
*
* @author Manik Surtani
* @since 4.0
*/
public class ClusteredGetResponseValidityFilter implements ResponseFilter {
private Collection targets;
private int acceptableResponses;
private int missingResponses;
public ClusteredGetResponseValidityFilter(Collection targets, Address self) {
this.targets = new HashSet(targets);
this.acceptableResponses = 0;
this.missingResponses = targets.size();
if (this.targets.contains(self)) {
this.missingResponses--;
}
}
@Override
public boolean isAcceptable(Response response, Address address) {
if (targets.contains(address)) {
missingResponses--;
if (response instanceof SuccessfulResponse || response instanceof ExceptionResponse) {
acceptableResponses++;
return true;
}
}
return false;
}
@Override
public boolean needMoreResponses() {
return acceptableResponses < 1 && missingResponses > 0;
}
}