| /* |
| * 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.affinity; |
| |
| import java.io.Externalizable; |
| import java.io.IOException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| 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; |
| |
| /** |
| * |
| */ |
| public class AffinityTopologyVersion implements Comparable<AffinityTopologyVersion>, Externalizable, Message { |
| /** */ |
| private static final long serialVersionUID = 0L; |
| |
| /** */ |
| public static final AffinityTopologyVersion NONE = new AffinityTopologyVersion(-1, 0); |
| |
| /** */ |
| public static final AffinityTopologyVersion ZERO = new AffinityTopologyVersion(0, 0); |
| |
| /** */ |
| private long topVer; |
| |
| /** */ |
| private int minorTopVer; |
| |
| /** |
| * Empty constructor required by {@link Externalizable}. |
| */ |
| public AffinityTopologyVersion() { |
| // No-op. |
| } |
| |
| /** |
| * @param topVer Topology version. |
| */ |
| public AffinityTopologyVersion(long topVer) { |
| this.topVer = topVer; |
| } |
| |
| /** |
| * @param topVer Topology version. |
| * @param minorTopVer Minor topology version. |
| */ |
| public AffinityTopologyVersion( |
| long topVer, |
| int minorTopVer |
| ) { |
| this.topVer = topVer; |
| this.minorTopVer = minorTopVer; |
| } |
| |
| /** |
| * @return {@code True} if this is real topology version (neither {@link #NONE} nor {@link #ZERO}. |
| */ |
| public boolean initialized() { |
| return topVer > 0; |
| } |
| |
| /** |
| * @return Topology version with incremented minor version. |
| */ |
| public AffinityTopologyVersion nextMinorVersion() { |
| assert topVer > 0; |
| |
| return new AffinityTopologyVersion(topVer, minorTopVer + 1); |
| } |
| |
| /** |
| * @return Topology version. |
| */ |
| public long topologyVersion() { |
| return topVer; |
| } |
| |
| /** |
| * @return Minor topology version. |
| */ |
| public int minorTopologyVersion() { |
| return minorTopVer; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public int compareTo(AffinityTopologyVersion o) { |
| int cmp = Long.compare(topVer, o.topVer); |
| |
| if (cmp == 0) |
| return Integer.compare(minorTopVer, o.minorTopVer); |
| |
| return cmp; |
| } |
| |
| /** |
| * @param lower Lower bound. |
| * @param upper Upper bound. |
| * @return {@code True} if this topology version is within provided bounds (inclusive). |
| */ |
| public final boolean isBetween(AffinityTopologyVersion lower, AffinityTopologyVersion upper) { |
| return compareTo(lower) >= 0 && compareTo(upper) <= 0; |
| } |
| |
| /** |
| * @param topVer Test version. |
| * @return {@code True} if this topology happens strictly after than {@code topVer}. |
| */ |
| public final boolean after(AffinityTopologyVersion topVer) { |
| return compareTo(topVer) > 0; |
| } |
| |
| /** |
| * @param topVer Test version. |
| * @return {@code True} if this topology happens strictly before than {@code topVer}. |
| */ |
| public final boolean before(AffinityTopologyVersion topVer) { |
| return compareTo(topVer) < 0; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void onAckReceived() { |
| // No-op. |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean equals(Object o) { |
| if (this == o) |
| return true; |
| |
| if (!(o instanceof AffinityTopologyVersion)) |
| return false; |
| |
| AffinityTopologyVersion that = (AffinityTopologyVersion)o; |
| |
| return minorTopVer == that.minorTopVer && topVer == that.topVer; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public int hashCode() { |
| return 31 * (int)topVer + minorTopVer; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void writeExternal(ObjectOutput out) throws IOException { |
| out.writeLong(topVer); |
| out.writeInt(minorTopVer); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { |
| topVer = in.readLong(); |
| minorTopVer = in.readInt(); |
| } |
| |
| /** {@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("minorTopVer", minorTopVer)) |
| return false; |
| |
| writer.incrementState(); |
| |
| case 1: |
| if (!writer.writeLong("topVer", topVer)) |
| 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: |
| minorTopVer = reader.readInt("minorTopVer"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| case 1: |
| topVer = reader.readLong("topVer"); |
| |
| if (!reader.isLastRead()) |
| return false; |
| |
| reader.incrementState(); |
| |
| } |
| |
| return reader.afterMessageRead(AffinityTopologyVersion.class); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public short directType() { |
| return 111; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public byte fieldsCount() { |
| return 2; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return S.toString(AffinityTopologyVersion.class, this); |
| } |
| } |