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CatchupServer.java
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CatchupServer.java
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/*
* Copyright (c) 2002-2015 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.coreedge.catchup;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
import io.netty.handler.codec.LengthFieldPrepender;
import io.netty.handler.stream.ChunkedWriteHandler;
import java.util.concurrent.TimeUnit;
import org.neo4j.coreedge.catchup.storecopy.core.GetStoreRequestHandler;
import org.neo4j.coreedge.catchup.storecopy.core.StoreCopyFinishedResponseEncoder;
import org.neo4j.coreedge.catchup.tx.core.TxPullRequestDecoder;
import org.neo4j.coreedge.catchup.tx.core.TxPullRequestHandler;
import org.neo4j.coreedge.catchup.tx.core.TxPullResponseEncoder;
import org.neo4j.coreedge.server.ListenSocketAddress;
import org.neo4j.coreedge.catchup.storecopy.edge.GetStoreRequestDecoder;
import org.neo4j.coreedge.server.logging.ExceptionLoggingHandler;
import org.neo4j.coreedge.catchup.tx.edge.TxStreamFinishedResponseEncoder;
import org.neo4j.coreedge.catchup.storecopy.FileHeaderEncoder;
import org.neo4j.function.Supplier;
import org.neo4j.helpers.NamedThreadFactory;
import org.neo4j.kernel.NeoStoreDataSource;
import org.neo4j.kernel.impl.store.StoreId;
import org.neo4j.kernel.impl.transaction.log.LogicalTransactionStore;
import org.neo4j.kernel.impl.transaction.log.TransactionIdStore;
import org.neo4j.kernel.impl.transaction.log.checkpoint.CheckPointer;
import org.neo4j.kernel.lifecycle.LifecycleAdapter;
import org.neo4j.logging.Log;
import org.neo4j.logging.LogProvider;
public class CatchupServer extends LifecycleAdapter
{
private final LogProvider logProvider;
private final Supplier<StoreId> storeIdSupplier;
private final Supplier<TransactionIdStore> transactionIdStoreSupplier;
private final Supplier<LogicalTransactionStore> logicalTransactionStoreSupplier;
private final Supplier<NeoStoreDataSource> dataSourceSupplier;
private final NamedThreadFactory threadFactory = new NamedThreadFactory( "catchup-server" );
private final ListenSocketAddress listenAddress;
private EventLoopGroup workerGroup;
private Channel channel;
private Supplier<CheckPointer> checkPointerSupplier;
private Log log;
public CatchupServer( LogProvider logProvider,
Supplier<StoreId> storeIdSupplier,
Supplier<TransactionIdStore> transactionIdStoreSupplier,
Supplier<LogicalTransactionStore> logicalTransactionStoreSupplier,
Supplier<NeoStoreDataSource> dataSourceSupplier,
Supplier<CheckPointer> checkPointerSupplier,
ListenSocketAddress listenAddress )
{
this.listenAddress = listenAddress;
this.transactionIdStoreSupplier = transactionIdStoreSupplier;
this.storeIdSupplier = storeIdSupplier;
this.logicalTransactionStoreSupplier = logicalTransactionStoreSupplier;
this.logProvider = logProvider;
this.log = logProvider.getLog( getClass() );
this.dataSourceSupplier = dataSourceSupplier;
this.checkPointerSupplier = checkPointerSupplier;
}
@Override
public synchronized void start() throws Throwable
{
startNettyServer();
}
private void startNettyServer()
{
workerGroup = new NioEventLoopGroup( 0, threadFactory );
ServerBootstrap bootstrap = new ServerBootstrap()
.group( workerGroup )
.channel( NioServerSocketChannel.class )
.localAddress( listenAddress.socketAddress() )
.childHandler( new ChannelInitializer<SocketChannel>()
{
@Override
protected void initChannel( SocketChannel ch ) throws Exception
{
CatchupServerProtocol protocol = new CatchupServerProtocol();
ChannelPipeline pipeline = ch.pipeline();
pipeline.addLast( new LengthFieldBasedFrameDecoder( Integer.MAX_VALUE, 0, 4, 0, 4 ) );
pipeline.addLast( new LengthFieldPrepender( 4 ) );
pipeline.addLast( new ResponseMessageTypeEncoder() );
pipeline.addLast( new RequestMessageTypeEncoder() );
pipeline.addLast( new TxPullResponseEncoder() );
pipeline.addLast( new StoreCopyFinishedResponseEncoder() );
pipeline.addLast( new TxStreamFinishedResponseEncoder() );
pipeline.addLast( new FileHeaderEncoder() );
pipeline.addLast( new ServerMessageTypeHandler( protocol, logProvider ) );
pipeline.addLast( new TxPullRequestDecoder( protocol ) );
pipeline.addLast( new TxPullRequestHandler( protocol, storeIdSupplier,
transactionIdStoreSupplier, logicalTransactionStoreSupplier ) );
pipeline.addLast( new ChunkedWriteHandler() );
pipeline.addLast( new GetStoreRequestDecoder( protocol ) );
pipeline.addLast( new GetStoreRequestHandler( protocol, dataSourceSupplier,
checkPointerSupplier ) );
pipeline.addLast( new ExceptionLoggingHandler( log ) );
}
} );
channel = bootstrap.bind().syncUninterruptibly().channel();
}
@Override
public synchronized void stop() throws Throwable
{
try
{
channel.close().sync();
}
catch( InterruptedException e )
{
Thread.currentThread().interrupt();
log.warn( "Interrupted while closing channel." );
}
if ( workerGroup.shutdownGracefully( 2, 5, TimeUnit.SECONDS ).awaitUninterruptibly( 10, TimeUnit.SECONDS ) )
{
log.warn( "Worker group not shutdown within 10 seconds." );
}
}
}