| /* |
| * 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.util.HashMap; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.TimeoutException; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import org.apache.cassandra.utils.concurrent.Condition; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| 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.UncheckedInterruptedException; |
| |
| |
| import static java.util.concurrent.TimeUnit.NANOSECONDS; |
| import static org.apache.cassandra.config.DatabaseDescriptor.getTruncateRpcTimeout; |
| import static org.apache.cassandra.utils.Clock.Global.nanoTime; |
| import static org.apache.cassandra.utils.concurrent.Condition.newOneTimeCondition; |
| |
| public class TruncateResponseHandler implements RequestCallback<TruncateResponse> |
| { |
| protected static final Logger logger = LoggerFactory.getLogger(TruncateResponseHandler.class); |
| protected final Condition condition = newOneTimeCondition(); |
| private final int responseCount; |
| protected final AtomicInteger responses = new AtomicInteger(0); |
| private final long start; |
| private final Map<InetAddressAndPort, RequestFailureReason> failureReasonByEndpoint = new ConcurrentHashMap<>(); |
| |
| 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 = nanoTime(); |
| } |
| |
| public void get() throws TimeoutException |
| { |
| long timeoutNanos = getTruncateRpcTimeout(NANOSECONDS) - (nanoTime() - start); |
| boolean signaled; |
| try |
| { |
| signaled = condition.await(timeoutNanos, NANOSECONDS); // TODO truncate needs a much longer timeout |
| } |
| catch (InterruptedException e) |
| { |
| throw new UncheckedInterruptedException(e); |
| } |
| |
| if (!signaled) |
| throw new TimeoutException("Truncate timed out - received only " + responses.get() + " responses"); |
| |
| if (!failureReasonByEndpoint.isEmpty()) |
| { |
| // clone to make sure no race condition happens |
| Map<InetAddressAndPort, RequestFailureReason> failureReasonByEndpoint = new HashMap<>(this.failureReasonByEndpoint); |
| if (RequestCallback.isTimeout(failureReasonByEndpoint)) |
| throw new TimeoutException("Truncate timed out - received only " + responses.get() + " responses"); |
| |
| StringBuilder sb = new StringBuilder("Truncate failed on "); |
| for (Map.Entry<InetAddressAndPort, RequestFailureReason> e : failureReasonByEndpoint.entrySet()) |
| sb.append("replica ").append(e.getKey()).append(" -> ").append(e.getValue()).append(", "); |
| sb.setLength(sb.length() - 2); |
| throw new TruncateException(sb.toString()); |
| } |
| } |
| |
| @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. |
| failureReasonByEndpoint.put(from, failureReason); |
| condition.signalAll(); |
| } |
| |
| @Override |
| public boolean invokeOnFailure() |
| { |
| return true; |
| } |
| } |