ekaterinadimitrova2 commented on code in PR #2807: URL: https://github.com/apache/cassandra/pull/2807#discussion_r1375129388
########## src/java/org/apache/cassandra/tcm/Commit.java: ########## @@ -0,0 +1,429 @@ +/* + * 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.tcm; + +import java.io.IOException; +import java.util.function.BiConsumer; +import java.util.function.Supplier; + +import com.google.common.annotations.VisibleForTesting; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import org.apache.cassandra.db.TypeSizes; +import org.apache.cassandra.exceptions.ExceptionCode; +import org.apache.cassandra.io.IVersionedSerializer; +import org.apache.cassandra.io.util.DataInputPlus; +import org.apache.cassandra.io.util.DataOutputPlus; +import org.apache.cassandra.locator.InetAddressAndPort; +import org.apache.cassandra.metrics.TCMMetrics; +import org.apache.cassandra.tcm.log.Replication; +import org.apache.cassandra.tcm.membership.NodeVersion; +import org.apache.cassandra.tcm.serialization.Version; +import org.apache.cassandra.net.*; +import org.apache.cassandra.tcm.membership.Directory; +import org.apache.cassandra.tcm.membership.NodeId; +import org.apache.cassandra.tcm.log.Entry; +import org.apache.cassandra.utils.FBUtilities; +import org.apache.cassandra.utils.vint.VIntCoding; + +import static org.apache.cassandra.tcm.ClusterMetadataService.State.*; + +/** + * Commit request send by a {@code RemoteProcessor} from a non-CMS node. + * + */ +public class Commit +{ + private static final Logger logger = LoggerFactory.getLogger(Commit.class); + + public static final IVersionedSerializer<Commit> defaultMessageSerializer = new Serializer(NodeVersion.CURRENT.serializationVersion()); + + private static volatile Serializer serializerCache; + public static IVersionedSerializer<Commit> messageSerializer(Version version) + { + Serializer cached = serializerCache; + if (cached != null && cached.serializationVersion.equals(version)) + return cached; + cached = new Serializer(version); + serializerCache = cached; + return cached; + } + + private final Entry.Id entryId; + private final Transformation transform; + private final Epoch lastKnown; + + public Commit(Entry.Id entryId, Transformation transform, Epoch lastKnown) + { + this.entryId = entryId; + this.transform = transform; + this.lastKnown = lastKnown; + } + + public String toString() + { + return "Commit{" + + "transformation=" + transform + + ", lastKnown=" + lastKnown + + '}'; + } + + static class Serializer implements IVersionedSerializer<Commit> + { + private final Version serializationVersion; + + public Serializer(Version serializationVersion) + { + this.serializationVersion = serializationVersion; + } + + public void serialize(Commit t, DataOutputPlus out, int version) throws IOException + { + out.writeInt(serializationVersion.asInt()); + Entry.Id.serializer.serialize(t.entryId, out, serializationVersion); + Transformation.serializer.serialize(t.transform, out, serializationVersion); + Epoch.serializer.serialize(t.lastKnown, out, serializationVersion); + } + + public Commit deserialize(DataInputPlus in, int version) throws IOException + { + Version deserializationVersion = Version.fromInt(in.readInt()); + Entry.Id entryId = Entry.Id.serializer.deserialize(in, deserializationVersion); + Transformation transform = Transformation.serializer.deserialize(in, deserializationVersion); + Epoch lastKnown = Epoch.serializer.deserialize(in, deserializationVersion); + return new Commit(entryId, transform, lastKnown); + } + + public long serializedSize(Commit t, int version) + { + return TypeSizes.sizeof(serializationVersion.asInt()) + + Transformation.serializer.serializedSize(t.transform, serializationVersion) + + Entry.Id.serializer.serializedSize(t.entryId, serializationVersion) + + Epoch.serializer.serializedSize(t.lastKnown, serializationVersion); + } + } + + static volatile Result.Serializer resultSerializerCache; + public static interface Result Review Comment: ```suggestion public interface Result ``` -- This is an automated message from the Apache Git Service. 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