| /* |
| * 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.ignite.internal.processors.cache.mvcc; |
| |
| import java.nio.ByteBuffer; |
| import org.apache.ignite.internal.util.typedef.internal.S; |
| import org.apache.ignite.plugin.extensions.communication.Message; |
| import org.apache.ignite.plugin.extensions.communication.MessageReader; |
| import org.apache.ignite.plugin.extensions.communication.MessageWriter; |
| |
| /** |
| * Base MVCC version implementation. |
| */ |
| public class MvccVersionImpl implements MvccVersion, Message { |
| /** */ |
| private static final long serialVersionUID = 0L; |
| |
| /** Coordinator version. */ |
| private long crdVer; |
| |
| /** Local counter. */ |
| private long cntr; |
| |
| /** Operation counter. */ |
| private int opCntr; |
| |
| /** |
| * Constructor. |
| */ |
| public MvccVersionImpl() { |
| // No-op. |
| } |
| |
| /** |
| * @param crdVer Coordinator version. |
| * @param cntr Counter. |
| * @param opCntr Operation counter. |
| */ |
| public MvccVersionImpl(long crdVer, long cntr, int opCntr) { |
| this.crdVer = crdVer; |
| this.cntr = cntr; |
| this.opCntr = opCntr; |
| } |
| |
| /** |
| * @return Coordinator version. |
| */ |
| @Override public long coordinatorVersion() { |
| return crdVer; |
| } |
| |
| /** |
| * @return Local counter. |
| */ |
| @Override public long counter() { |
| return cntr; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public int operationCounter() { |
| return opCntr; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean equals(Object o) { |
| if (this == o) |
| return true; |
| |
| if (o == null || getClass() != o.getClass()) |
| return false; |
| |
| MvccVersionImpl that = (MvccVersionImpl) o; |
| |
| return crdVer == that.crdVer && cntr == that.cntr; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public int hashCode() { |
| int res = (int) (crdVer ^ (crdVer >>> 32)); |
| |
| res = 31 * res + (int) (cntr ^ (cntr >>> 32)); |
| |
| return res; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean writeTo(ByteBuffer buf, MessageWriter writer) { |
| writer.setBuffer(buf); |
| |
| if (!writer.isHeaderWritten()) { |
| if (!writer.writeHeader(directType(), fieldsCount())) |
| return false; |
| |
| writer.onHeaderWritten(); |
| } |
| |
| switch (writer.state()) { |
| case 0: |
| if (!writer.writeLong("cntr", cntr)) |
| return false; |
| |
| writer.incrementState(); |
| |
| case 1: |
| if (!writer.writeLong("crdVer", crdVer)) |
| return false; |
| |
| writer.incrementState(); |
| |
| case 2: |
| if (!writer.writeInt("opCntr", opCntr)) |
| return false; |
| |
| writer.incrementState(); |
| |
| } |
| |
| return true; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean readFrom(ByteBuffer buf, MessageReader reader) { |
| reader.setBuffer(buf); |
| |
| if (!reader.beforeMessageRead()) |
| return false; |
| |
| switch (reader.state()) { |
| case 0: |
| cntr = reader.readLong("cntr"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| case 1: |
| crdVer = reader.readLong("crdVer"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| case 2: |
| opCntr = reader.readInt("opCntr"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| } |
| |
| return reader.afterMessageRead(MvccVersionImpl.class); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public short directType() { |
| return 148; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public byte fieldsCount() { |
| return 3; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void onAckReceived() { |
| // No-op. |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return S.toString(MvccVersionImpl.class, this); |
| } |
| } |