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RaftProtocolServerInstallerV2.java
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RaftProtocolServerInstallerV2.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.consensus.protocol.v2;
import io.netty.channel.Channel;
import io.netty.channel.ChannelInboundHandler;
import java.time.Clock;
import java.util.Collection;
import java.util.List;
import java.util.stream.Collectors;
import org.neo4j.causalclustering.messaging.marshalling.v2.ContentTypeProtocol;
import org.neo4j.causalclustering.messaging.marshalling.v2.decoding.ContentTypeDispatcher;
import org.neo4j.causalclustering.messaging.marshalling.v2.decoding.DecodingDispatcher;
import org.neo4j.causalclustering.messaging.marshalling.v2.decoding.RaftMessageComposer;
import org.neo4j.causalclustering.messaging.marshalling.v2.decoding.ReplicatedContentDecoder;
import org.neo4j.causalclustering.protocol.ModifierProtocolInstaller;
import org.neo4j.causalclustering.protocol.NettyPipelineBuilderFactory;
import org.neo4j.causalclustering.protocol.Protocol;
import org.neo4j.causalclustering.protocol.ProtocolInstaller;
import org.neo4j.causalclustering.protocol.ProtocolInstaller.Orientation;
import org.neo4j.logging.Log;
import org.neo4j.logging.LogProvider;
public class RaftProtocolServerInstallerV2 implements ProtocolInstaller<Orientation.Server>
{
private static final Protocol.ApplicationProtocols APPLICATION_PROTOCOL = Protocol.ApplicationProtocols.RAFT_2;
private final LogProvider logProvider;
public static class Factory extends ProtocolInstaller.Factory<Orientation.Server,RaftProtocolServerInstallerV2>
{
public Factory( ChannelInboundHandler raftMessageHandler, NettyPipelineBuilderFactory pipelineBuilderFactory, LogProvider logProvider )
{
super( APPLICATION_PROTOCOL, modifiers -> new RaftProtocolServerInstallerV2( raftMessageHandler, pipelineBuilderFactory, modifiers, logProvider ) );
}
}
private final ChannelInboundHandler raftMessageHandler;
private final NettyPipelineBuilderFactory pipelineBuilderFactory;
private final List<ModifierProtocolInstaller<Orientation.Server>> modifiers;
private final Log log;
public RaftProtocolServerInstallerV2( ChannelInboundHandler raftMessageHandler, NettyPipelineBuilderFactory pipelineBuilderFactory,
List<ModifierProtocolInstaller<Orientation.Server>> modifiers, LogProvider logProvider )
{
this.raftMessageHandler = raftMessageHandler;
this.pipelineBuilderFactory = pipelineBuilderFactory;
this.modifiers = modifiers;
this.logProvider = logProvider;
this.log = this.logProvider.getLog( getClass() );
}
@Override
public void install( Channel channel ) throws Exception
{
ContentTypeProtocol contentTypeProtocol = new ContentTypeProtocol();
DecodingDispatcher decodingDispatcher = new DecodingDispatcher( contentTypeProtocol, logProvider );
pipelineBuilderFactory
.server( channel, log )
.modify( modifiers )
.addFraming()
.add( "raft_content_type_dispatcher", new ContentTypeDispatcher( contentTypeProtocol ) )
.add( "raft_component_decoder", decodingDispatcher )
.add( "raft_content_decoder", new ReplicatedContentDecoder( contentTypeProtocol ) )
.add( "raft_message_composer", new RaftMessageComposer( Clock.systemUTC() ) )
.add( "raft_handler", raftMessageHandler )
.install();
}
@Override
public Protocol.ApplicationProtocol applicationProtocol()
{
return APPLICATION_PROTOCOL;
}
@Override
public Collection<Collection<Protocol.ModifierProtocol>> modifiers()
{
return modifiers.stream().map( ModifierProtocolInstaller::protocols ).collect( Collectors.toList() );
}
}