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BoltStateMachineFactoryImpl.java
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BoltStateMachineFactoryImpl.java
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/*
* Copyright (c) 2002-2018 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.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 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.bolt.runtime;
import java.time.Clock;
import java.time.Duration;
import org.neo4j.bolt.BoltChannel;
import org.neo4j.bolt.security.auth.Authentication;
import org.neo4j.bolt.v1.BoltProtocolV1;
import org.neo4j.bolt.v1.runtime.BoltStateMachineV1;
import org.neo4j.bolt.v1.runtime.BoltStateMachineV1SPI;
import org.neo4j.bolt.v2.BoltProtocolV2;
import org.neo4j.bolt.v3.BoltProtocolV3;
import org.neo4j.bolt.v3.BoltStateMachineV3;
import org.neo4j.graphdb.factory.GraphDatabaseSettings;
import org.neo4j.kernel.AvailabilityGuard;
import org.neo4j.kernel.api.bolt.BoltConnectionTracker;
import org.neo4j.kernel.configuration.Config;
import org.neo4j.kernel.impl.logging.LogService;
import org.neo4j.kernel.internal.GraphDatabaseAPI;
import org.neo4j.udc.UsageData;
public class BoltStateMachineFactoryImpl implements BoltStateMachineFactory
{
private final GraphDatabaseAPI db;
private final UsageData usageData;
private final AvailabilityGuard availabilityGuard;
private final LogService logging;
private final Authentication authentication;
private final BoltConnectionTracker connectionTracker;
private final Config config;
private final Clock clock;
public BoltStateMachineFactoryImpl( GraphDatabaseAPI db, UsageData usageData, AvailabilityGuard availabilityGuard,
Authentication authentication, BoltConnectionTracker connectionTracker, Clock clock, Config config, LogService logging )
{
this.db = db;
this.usageData = usageData;
this.availabilityGuard = availabilityGuard;
this.logging = logging;
this.authentication = authentication;
this.connectionTracker = connectionTracker;
this.config = config;
this.clock = clock;
}
@Override
public BoltStateMachine newStateMachine( long protocolVersion, BoltChannel boltChannel )
{
if ( protocolVersion == BoltProtocolV1.VERSION || protocolVersion == BoltProtocolV2.VERSION )
{
return newStateMachineV1( boltChannel );
}
else if ( protocolVersion == BoltProtocolV3.VERSION )
{
return newStateMachineV3( boltChannel );
}
else
{
throw new IllegalArgumentException( "Failed to create a state machine for protocol version " + protocolVersion );
}
}
private BoltStateMachine newStateMachineV1( BoltChannel boltChannel )
{
TransactionStateMachineSPI transactionSPI = createTxSpi( clock );
BoltStateMachineSPI boltSPI = new BoltStateMachineV1SPI( boltChannel, usageData, logging, authentication, connectionTracker, transactionSPI );
return new BoltStateMachineV1( boltSPI, boltChannel, clock );
}
private BoltStateMachine newStateMachineV3( BoltChannel boltChannel )
{
TransactionStateMachineSPI transactionSPI = createTxSpi( clock );
BoltStateMachineSPI boltSPI = new BoltStateMachineV1SPI( boltChannel, usageData, logging, authentication, connectionTracker, transactionSPI );
return new BoltStateMachineV3( boltSPI, boltChannel, clock );
}
private TransactionStateMachineSPI createTxSpi( Clock clock )
{
long bookmarkReadyTimeout = config.get( GraphDatabaseSettings.bookmark_ready_timeout ).toMillis();
Duration txAwaitDuration = Duration.ofMillis( bookmarkReadyTimeout );
return new org.neo4j.bolt.v1.runtime.TransactionStateMachineSPI( db, availabilityGuard, txAwaitDuration, clock );
}
}