| /* |
| * 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.gms; |
| |
| import org.apache.cassandra.dht.IPartitioner; |
| import org.apache.cassandra.dht.Token; |
| import org.apache.cassandra.utils.ByteArrayUtil; |
| import org.apache.cassandra.utils.FBUtilities; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.*; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| |
| public class TokenSerializer |
| { |
| private static final Logger logger = LoggerFactory.getLogger(TokenSerializer.class); |
| |
| public static void serialize(IPartitioner partitioner, Collection<Token> tokens, DataOutput out) throws IOException |
| { |
| for (Token token : tokens) |
| { |
| ByteBuffer tokenBuffer = partitioner.getTokenFactory().toByteArray(token); |
| assert tokenBuffer.arrayOffset() == 0; |
| ByteArrayUtil.writeWithLength(tokenBuffer.array(), out); |
| } |
| out.writeInt(0); |
| } |
| |
| public static Collection<Token> deserialize(IPartitioner partitioner, DataInput in) throws IOException |
| { |
| Collection<Token> tokens = new ArrayList<Token>(); |
| while (true) |
| { |
| int size = in.readInt(); |
| if (size < 1) |
| break; |
| if (logger.isTraceEnabled()) |
| logger.trace("Reading token of {}", FBUtilities.prettyPrintMemory(size)); |
| byte[] bintoken = new byte[size]; |
| in.readFully(bintoken); |
| tokens.add(partitioner.getTokenFactory().fromByteArray(ByteBuffer.wrap(bintoken))); |
| } |
| return tokens; |
| } |
| } |