| /* |
| * 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 java.net.InetAddress; |
| import java.util.concurrent.TimeoutException; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.cassandra.config.DatabaseDescriptor; |
| import org.apache.cassandra.db.TruncateResponse; |
| import org.apache.cassandra.exceptions.RequestFailureReason; |
| import org.apache.cassandra.exceptions.TruncateException; |
| import org.apache.cassandra.locator.InetAddressAndPort; |
| import org.apache.cassandra.net.RequestCallback; |
| import org.apache.cassandra.net.Message; |
| import org.apache.cassandra.utils.concurrent.SimpleCondition; |
| |
| import static java.util.concurrent.TimeUnit.NANOSECONDS; |
| |
| public class TruncateResponseHandler implements RequestCallback<TruncateResponse> |
| { |
| protected static final Logger logger = LoggerFactory.getLogger(TruncateResponseHandler.class); |
| protected final SimpleCondition condition = new SimpleCondition(); |
| private final int responseCount; |
| protected final AtomicInteger responses = new AtomicInteger(0); |
| private final long start; |
| private volatile InetAddress truncateFailingReplica; |
| |
| public TruncateResponseHandler(int responseCount) |
| { |
| // at most one node per range can bootstrap at a time, and these will be added to the write until |
| // bootstrap finishes (at which point we no longer need to write to the old ones). |
| assert 1 <= responseCount: "invalid response count " + responseCount; |
| |
| this.responseCount = responseCount; |
| start = System.nanoTime(); |
| } |
| |
| public void get() throws TimeoutException |
| { |
| long timeoutNanos = DatabaseDescriptor.getTruncateRpcTimeout(NANOSECONDS) - (System.nanoTime() - start); |
| boolean completedInTime; |
| try |
| { |
| completedInTime = condition.await(timeoutNanos, NANOSECONDS); // TODO truncate needs a much longer timeout |
| } |
| catch (InterruptedException ex) |
| { |
| throw new AssertionError(ex); |
| } |
| |
| if (!completedInTime) |
| { |
| throw new TimeoutException("Truncate timed out - received only " + responses.get() + " responses"); |
| } |
| |
| if (truncateFailingReplica != null) |
| { |
| throw new TruncateException("Truncate failed on replica " + truncateFailingReplica); |
| } |
| } |
| |
| @Override |
| public void onResponse(Message<TruncateResponse> message) |
| { |
| responses.incrementAndGet(); |
| if (responses.get() >= responseCount) |
| condition.signalAll(); |
| } |
| |
| @Override |
| public void onFailure(InetAddressAndPort from, RequestFailureReason failureReason) |
| { |
| // If the truncation hasn't succeeded on some replica, abort and indicate this back to the client. |
| truncateFailingReplica = from.address; |
| condition.signalAll(); |
| } |
| |
| @Override |
| public boolean invokeOnFailure() |
| { |
| return true; |
| } |
| } |