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GetIndexFilesRequest.java
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GetIndexFilesRequest.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.catchup.storecopy;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageDecoder;
import io.netty.handler.codec.MessageToByteEncoder;
import java.io.IOException;
import java.util.List;
import org.neo4j.causalclustering.catchup.RequestMessageType;
import org.neo4j.causalclustering.core.state.storage.SafeChannelMarshal;
import org.neo4j.causalclustering.identity.StoreId;
import org.neo4j.causalclustering.messaging.EndOfStreamException;
import org.neo4j.causalclustering.messaging.NetworkWritableChannel;
import org.neo4j.causalclustering.messaging.NetworkReadableClosableChannelNetty4;
import org.neo4j.causalclustering.messaging.StoreCopyRequest;
import org.neo4j.causalclustering.messaging.marshalling.storeid.StoreIdMarshal;
import org.neo4j.storageengine.api.ReadableChannel;
import org.neo4j.storageengine.api.WritableChannel;
public class GetIndexFilesRequest implements StoreCopyRequest
{
private final StoreId expectedStoreId;
private final long indexId;
private final long requiredTransactionId;
public GetIndexFilesRequest( StoreId expectedStoreId, long indexId, long requiredTransactionId )
{
this.expectedStoreId = expectedStoreId;
this.indexId = indexId;
this.requiredTransactionId = requiredTransactionId;
}
@Override
public StoreId expectedStoreId()
{
return expectedStoreId;
}
@Override
public long requiredTransactionId()
{
return requiredTransactionId;
}
public long indexId()
{
return indexId;
}
@Override
public RequestMessageType messageType()
{
return RequestMessageType.INDEX_SNAPSHOT;
}
static class IndexSnapshotRequestMarshall extends SafeChannelMarshal<GetIndexFilesRequest>
{
@Override
protected GetIndexFilesRequest unmarshal0( ReadableChannel channel ) throws IOException, EndOfStreamException
{
StoreId storeId = StoreIdMarshal.INSTANCE.unmarshal( channel );
long requiredTransactionId = channel.getLong();
long indexId = channel.getLong();
return new GetIndexFilesRequest( storeId, indexId, requiredTransactionId );
}
@Override
public void marshal( GetIndexFilesRequest getIndexFilesRequest, WritableChannel channel ) throws IOException
{
StoreIdMarshal.INSTANCE.marshal( getIndexFilesRequest.expectedStoreId(), channel );
channel.putLong( getIndexFilesRequest.requiredTransactionId() );
channel.putLong( getIndexFilesRequest.indexId() );
}
}
public static class Encoder extends MessageToByteEncoder<GetIndexFilesRequest>
{
@Override
protected void encode( ChannelHandlerContext ctx, GetIndexFilesRequest msg, ByteBuf out ) throws Exception
{
new IndexSnapshotRequestMarshall().marshal( msg, new NetworkWritableChannel( out ) );
}
}
public static class Decoder extends ByteToMessageDecoder
{
@Override
protected void decode( ChannelHandlerContext ctx, ByteBuf in, List<Object> out ) throws Exception
{
GetIndexFilesRequest getIndexFilesRequest = new IndexSnapshotRequestMarshall().unmarshal0( new NetworkReadableClosableChannelNetty4( in ) );
out.add( getIndexFilesRequest );
}
}
@Override
public String toString()
{
return "GetIndexFilesRequest{" + "expectedStoreId=" + expectedStoreId + ", indexId=" + indexId + ", requiredTransactionId=" + requiredTransactionId +
'}';
}
}