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DummyRequest.java
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DummyRequest.java
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/*
* Copyright (c) 2002-2018 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.com]
*
* This file is part of Neo4j Enterprise Edition. The included source
* code can be redistributed and/or modified under the terms of the
* GNU AFFERO GENERAL PUBLIC LICENSE Version 3
* (http://www.fsf.org/licensing/licenses/agpl-3.0.html) with the
* Commons Clause, as found in the associated LICENSE.txt file.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* Neo4j object code can be licensed independently from the source
* under separate terms from the AGPL. Inquiries can be directed to:
* licensing@neo4j.com
*
* More information is also available at:
* https://neo4j.com/licensing/
*/
package org.neo4j.causalclustering.core.state.machines.dummy;
import java.io.IOException;
import java.util.Arrays;
import java.util.function.Consumer;
import org.neo4j.causalclustering.core.state.CommandDispatcher;
import org.neo4j.causalclustering.core.state.Result;
import org.neo4j.causalclustering.core.state.machines.tx.CoreReplicatedContent;
import org.neo4j.causalclustering.core.state.storage.SafeChannelMarshal;
import org.neo4j.causalclustering.messaging.marshalling.ByteArrayByteBufAwareMarshal;
import org.neo4j.causalclustering.messaging.marshalling.ByteBufAwareMarshal;
import org.neo4j.storageengine.api.ReadableChannel;
import org.neo4j.storageengine.api.WritableChannel;
public class DummyRequest implements CoreReplicatedContent
{
private final byte[] data;
public DummyRequest( byte[] data )
{
this.data = data;
}
@Override
public boolean hasSize()
{
return true;
}
@Override
public long size()
{
return data.length;
}
public long byteCount()
{
return data != null ? data.length : 0;
}
@Override
public void dispatch( CommandDispatcher commandDispatcher, long commandIndex, Consumer<Result> callback )
{
commandDispatcher.dispatch( this, commandIndex, callback );
}
public ByteBufAwareMarshal serializer()
{
if ( data != null )
{
return new ByteArrayByteBufAwareMarshal( data );
}
else
{
return ByteBufAwareMarshal.simple( channel -> channel.putInt( 0 ) );
}
}
public static class Marshal extends SafeChannelMarshal<DummyRequest>
{
public static final Marshal INSTANCE = new Marshal();
@Override
public void marshal( DummyRequest dummy, WritableChannel channel ) throws IOException
{
if ( dummy.data != null )
{
channel.putInt( dummy.data.length );
channel.put( dummy.data, dummy.data.length );
}
else
{
channel.putInt( 0 );
}
}
@Override
protected DummyRequest unmarshal0( ReadableChannel channel ) throws IOException
{
int length = channel.getInt();
byte[] data;
if ( length > 0 )
{
data = new byte[length];
channel.get( data, length );
}
else
{
data = null;
}
return new DummyRequest( data );
}
}
@Override
public boolean equals( Object o )
{
if ( this == o )
{
return true;
}
if ( o == null || getClass() != o.getClass() )
{
return false;
}
DummyRequest that = (DummyRequest) o;
return Arrays.equals( data, that.data );
}
@Override
public int hashCode()
{
return Arrays.hashCode( data );
}
}