| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.cassandra.service; |
| |
| import org.apache.cassandra.db.WriteType; |
| import org.apache.cassandra.locator.InOurDcTester; |
| import org.apache.cassandra.locator.InetAddressAndPort; |
| import org.apache.cassandra.locator.ReplicaPlan; |
| import org.apache.cassandra.net.Message; |
| |
| import java.util.function.Predicate; |
| |
| /** |
| * This class blocks for a quorum of responses _in the local datacenter only_ (CL.LOCAL_QUORUM). |
| */ |
| public class DatacenterWriteResponseHandler<T> extends WriteResponseHandler<T> |
| { |
| private final Predicate<InetAddressAndPort> waitingFor = InOurDcTester.endpoints(); |
| |
| public DatacenterWriteResponseHandler(ReplicaPlan.ForTokenWrite replicaPlan, |
| Runnable callback, |
| WriteType writeType, |
| long queryStartNanoTime) |
| { |
| super(replicaPlan, callback, writeType, queryStartNanoTime); |
| assert replicaPlan.consistencyLevel().isDatacenterLocal(); |
| } |
| |
| @Override |
| public void onResponse(Message<T> message) |
| { |
| if (message == null || waitingFor(message.from())) |
| { |
| super.onResponse(message); |
| } |
| else |
| { |
| //WriteResponseHandler.response will call logResonseToIdealCLDelegate so only do it if not calling WriteResponseHandler.response. |
| //Must be last after all subclass processing |
| logResponseToIdealCLDelegate(message); |
| } |
| } |
| |
| @Override |
| protected boolean waitingFor(InetAddressAndPort from) |
| { |
| return waitingFor.test(from); |
| } |
| } |