| /* |
| * 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.utils; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| |
| import org.apache.cassandra.config.DatabaseDescriptor; |
| import org.apache.cassandra.db.TypeSizes; |
| import org.apache.cassandra.dht.IPartitioner; |
| import org.apache.cassandra.dht.Range; |
| import org.apache.cassandra.dht.Token; |
| import org.apache.cassandra.io.IVersionedSerializer; |
| import org.apache.cassandra.io.util.DataInputPlus; |
| import org.apache.cassandra.io.util.DataOutputPlus; |
| |
| public class RangesSerializer implements IVersionedSerializer<Collection<Range<Token>>> |
| { |
| public static final RangesSerializer serializer = new RangesSerializer(); |
| |
| @Override |
| public void serialize(Collection<Range<Token>> ranges, DataOutputPlus out, int version) throws IOException |
| { |
| out.writeInt(ranges.size()); |
| for (Range<Token> r : ranges) |
| { |
| Token.serializer.serialize(r.left, out, version); |
| Token.serializer.serialize(r.right, out, version); |
| } |
| } |
| |
| @Override |
| public Collection<Range<Token>> deserialize(DataInputPlus in, int version) throws IOException |
| { |
| int count = in.readInt(); |
| List<Range<Token>> ranges = new ArrayList<>(count); |
| IPartitioner partitioner = DatabaseDescriptor.getPartitioner(); |
| for (int i = 0; i < count; i++) |
| { |
| Token start = Token.serializer.deserialize(in, partitioner, version); |
| Token end = Token.serializer.deserialize(in, partitioner, version); |
| ranges.add(new Range<>(start, end)); |
| } |
| return ranges; |
| } |
| |
| @Override |
| public long serializedSize(Collection<Range<Token>> ranges, int version) |
| { |
| int size = TypeSizes.sizeof(ranges.size()); |
| if (ranges.size() > 0) |
| size += ranges.size() * 2 * Token.serializer.serializedSize(ranges.iterator().next().left, version); |
| return size; |
| } |
| } |