| /* |
| * 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.db; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| |
| import org.apache.cassandra.db.partitions.PartitionUpdate; |
| import org.apache.cassandra.exceptions.InvalidRequestException; |
| |
| import static org.apache.cassandra.db.IMutation.MAX_MUTATION_SIZE; |
| |
| public class MutationExceededMaxSizeException extends InvalidRequestException |
| { |
| public static final int PARTITION_MESSAGE_LIMIT = 1024; |
| |
| public final long mutationSize; |
| |
| MutationExceededMaxSizeException(IMutation mutation, int serializationVersion, long totalSize) |
| { |
| super(prepareMessage(mutation, serializationVersion, totalSize)); |
| this.mutationSize = totalSize; |
| } |
| |
| private static String prepareMessage(IMutation mutation, int version, long totalSize) |
| { |
| List<String> topPartitions = mutation.getPartitionUpdates().stream() |
| .sorted((upd1, upd2) -> |
| Long.compare(PartitionUpdate.serializer.serializedSize(upd2, version), |
| PartitionUpdate.serializer.serializedSize(upd1, version))) |
| .map(upd -> String.format("%s.%s", |
| upd.metadata().name, |
| upd.metadata().partitionKeyType.getString(upd.partitionKey().getKey()))) |
| .collect(Collectors.toList()); |
| |
| String topKeys = makeTopKeysString(topPartitions, PARTITION_MESSAGE_LIMIT); |
| return String.format("Rejected an oversized mutation (%d/%d) for keyspace: %s. Top keys are: %s", |
| totalSize, |
| MAX_MUTATION_SIZE, |
| mutation.getKeyspaceName(), |
| topKeys); |
| } |
| |
| @VisibleForTesting |
| static String makeTopKeysString(List<String> keys, int maxLength) { |
| Iterator<String> iterator = keys.listIterator(); |
| StringBuilder stringBuilder = new StringBuilder(); |
| while (iterator.hasNext()) |
| { |
| String key = iterator.next(); |
| |
| if (stringBuilder.length() == 0) |
| { |
| stringBuilder.append(key); //ensures atleast one key is added |
| iterator.remove(); |
| } |
| else if (stringBuilder.length() + key.length() + 2 <= maxLength) // 2 for ", " |
| { |
| stringBuilder.append(", ").append(key); |
| iterator.remove(); |
| } |
| else |
| break; |
| } |
| |
| if (keys.size() > 0) |
| stringBuilder.append(" and ").append(keys.size()).append(" more."); |
| |
| return stringBuilder.toString(); |
| } |
| } |