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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.
/*
* 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.repair;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.UUID;
import com.google.common.base.Objects;
import org.apache.cassandra.db.TypeSizes;
import org.apache.cassandra.dht.AbstractBounds;
import org.apache.cassandra.dht.IPartitioner;
import org.apache.cassandra.dht.Range;
import org.apache.cassandra.dht.Token;
import org.apache.cassandra.io.IVersionedSerializer;
import org.apache.cassandra.io.util.DataInputPlus;
import org.apache.cassandra.io.util.DataOutputPlus;
import org.apache.cassandra.net.MessagingService;
import org.apache.cassandra.streaming.PreviewKind;
import org.apache.cassandra.utils.UUIDSerializer;
/**
* RepairJobDesc is used from various repair processes to distinguish one RepairJob to another.
*
* @since 2.0
*/
public class RepairJobDesc
{
public static final IVersionedSerializer serializer = new RepairJobDescSerializer();
public final UUID parentSessionId;
/** RepairSession id */
public final UUID sessionId;
public final String keyspace;
public final String columnFamily;
/** repairing range */
public final Collection> ranges;
public RepairJobDesc(UUID parentSessionId, UUID sessionId, String keyspace, String columnFamily, Collection> ranges)
{
this.parentSessionId = parentSessionId;
this.sessionId = sessionId;
this.keyspace = keyspace;
this.columnFamily = columnFamily;
this.ranges = ranges;
}
@Override
public String toString()
{
return "[repair #" + sessionId + " on " + keyspace + "/" + columnFamily + ", " + ranges + "]";
}
public String toString(PreviewKind previewKind)
{
return '[' + previewKind.logPrefix() + " #" + sessionId + " on " + keyspace + "/" + columnFamily + ", " + ranges + "]";
}
@Override
public boolean equals(Object o)
{
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
RepairJobDesc that = (RepairJobDesc) o;
if (!columnFamily.equals(that.columnFamily)) return false;
if (!keyspace.equals(that.keyspace)) return false;
if (ranges != null ? that.ranges == null || (ranges.size() != that.ranges.size()) || (ranges.size() == that.ranges.size() && !ranges.containsAll(that.ranges)) : that.ranges != null) return false;
if (!sessionId.equals(that.sessionId)) return false;
if (parentSessionId != null ? !parentSessionId.equals(that.parentSessionId) : that.parentSessionId != null) return false;
return true;
}
@Override
public int hashCode()
{
return Objects.hashCode(sessionId, keyspace, columnFamily, ranges);
}
private static class RepairJobDescSerializer implements IVersionedSerializer
{
public void serialize(RepairJobDesc desc, DataOutputPlus out, int version) throws IOException
{
out.writeBoolean(desc.parentSessionId != null);
if (desc.parentSessionId != null)
UUIDSerializer.serializer.serialize(desc.parentSessionId, out, version);
UUIDSerializer.serializer.serialize(desc.sessionId, out, version);
out.writeUTF(desc.keyspace);
out.writeUTF(desc.columnFamily);
IPartitioner.validate(desc.ranges);
out.writeInt(desc.ranges.size());
for (Range rt : desc.ranges)
AbstractBounds.tokenSerializer.serialize(rt, out, version);
}
public RepairJobDesc deserialize(DataInputPlus in, int version) throws IOException
{
UUID parentSessionId = null;
if (in.readBoolean())
parentSessionId = UUIDSerializer.serializer.deserialize(in, version);
UUID sessionId = UUIDSerializer.serializer.deserialize(in, version);
String keyspace = in.readUTF();
String columnFamily = in.readUTF();
int nRanges = in.readInt();
Collection> ranges = new ArrayList<>(nRanges);
Range range;
for (int i = 0; i < nRanges; i++)
{
range = (Range) AbstractBounds.tokenSerializer.deserialize(in,
IPartitioner.global(), version);
ranges.add(range);
}
return new RepairJobDesc(parentSessionId, sessionId, keyspace, columnFamily, ranges);
}
public long serializedSize(RepairJobDesc desc, int version)
{
int size = TypeSizes.sizeof(desc.parentSessionId != null);
if (desc.parentSessionId != null)
size += UUIDSerializer.serializer.serializedSize(desc.parentSessionId, version);
size += UUIDSerializer.serializer.serializedSize(desc.sessionId, version);
size += TypeSizes.sizeof(desc.keyspace);
size += TypeSizes.sizeof(desc.columnFamily);
size += TypeSizes.sizeof(desc.ranges.size());
for (Range rt : desc.ranges)
{
size += AbstractBounds.tokenSerializer.serializedSize(rt, version);
}
return size;
}
}
}