| /* |
| * 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 java.util.UUID; |
| import org.apache.ignite.internal.processors.cache.version.GridCacheVersion; |
| 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; |
| |
| /** |
| * Contains attributes of tx visited during deadlock detection. |
| */ |
| public class ProbedTx implements Message { |
| /** */ |
| private static final long serialVersionUID = 0; |
| |
| /** */ |
| private UUID nodeId; |
| |
| /** */ |
| private GridCacheVersion xidVer; |
| |
| /** */ |
| private GridCacheVersion nearXidVer; |
| |
| /** */ |
| private long startTime; |
| |
| /** */ |
| private int lockCntr; |
| |
| /** */ |
| public ProbedTx() { |
| } |
| |
| /** |
| * @param nodeId Node on which probed transaction runs. |
| * @param xidVer Identifier of transaction. |
| * @param nearXidVer Identifier of near transaction. |
| * @param startTime Transaction start time. |
| * @param lockCntr Number of locks acquired by probed transaction at a time of probe handling. |
| */ |
| public ProbedTx(UUID nodeId, GridCacheVersion xidVer, GridCacheVersion nearXidVer, long startTime, |
| int lockCntr) { |
| this.nodeId = nodeId; |
| this.xidVer = xidVer; |
| this.nearXidVer = nearXidVer; |
| this.startTime = startTime; |
| this.lockCntr = lockCntr; |
| } |
| |
| /** |
| * @return Node on which probed transaction runs. |
| */ |
| public UUID nodeId() { |
| return nodeId; |
| } |
| |
| /** |
| * @return Identifier of transaction. |
| */ |
| public GridCacheVersion xidVersion() { |
| return xidVer; |
| } |
| |
| /** |
| * @return Identifier of near transaction. |
| */ |
| public GridCacheVersion nearXidVersion() { |
| return nearXidVer; |
| } |
| |
| /** |
| * @return Transaction start time. |
| */ |
| public long startTime() { |
| return startTime; |
| } |
| |
| /** |
| * @return Number of locks acquired by probed transaction at a time of probe handling. |
| */ |
| public int lockCounter() { |
| return lockCntr; |
| } |
| |
| /** |
| * Creates a copy of this instance with modified transaction start time. |
| * |
| * @param updStartTime New start time value. |
| * @return Instance with updated start time. |
| */ |
| public ProbedTx withStartTime(long updStartTime) { |
| return new ProbedTx( |
| nodeId, |
| xidVer, |
| nearXidVer, |
| updStartTime, |
| lockCntr |
| ); |
| } |
| |
| /** {@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.writeInt("lockCntr", lockCntr)) |
| return false; |
| |
| writer.incrementState(); |
| |
| case 1: |
| if (!writer.writeMessage("nearXidVer", nearXidVer)) |
| return false; |
| |
| writer.incrementState(); |
| |
| case 2: |
| if (!writer.writeUuid("nodeId", nodeId)) |
| return false; |
| |
| writer.incrementState(); |
| |
| case 3: |
| if (!writer.writeLong("startTime", startTime)) |
| return false; |
| |
| writer.incrementState(); |
| |
| case 4: |
| if (!writer.writeMessage("xidVer", xidVer)) |
| 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: |
| lockCntr = reader.readInt("lockCntr"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| case 1: |
| nearXidVer = reader.readMessage("nearXidVer"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| case 2: |
| nodeId = reader.readUuid("nodeId"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| case 3: |
| startTime = reader.readLong("startTime"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| case 4: |
| xidVer = reader.readMessage("xidVer"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| } |
| |
| return reader.afterMessageRead(ProbedTx.class); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public short directType() { |
| return 171; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public byte fieldsCount() { |
| return 5; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void onAckReceived() { |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return S.toString(ProbedTx.class, this); |
| } |
| } |