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StandardSessions.java
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StandardSessions.java
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/*
* Copyright (c) 2002-2016 "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 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.v1.runtime.internal;
import org.neo4j.bolt.security.auth.Authentication;
import org.neo4j.bolt.security.auth.BasicAuthentication;
import org.neo4j.bolt.v1.runtime.Session;
import org.neo4j.bolt.v1.runtime.Sessions;
import org.neo4j.kernel.internal.GraphDatabaseAPI;
import org.neo4j.graphdb.DependencyResolver;
import org.neo4j.graphdb.factory.GraphDatabaseSettings;
import org.neo4j.kernel.configuration.Config;
import org.neo4j.kernel.impl.core.ThreadToStatementContextBridge;
import org.neo4j.kernel.impl.logging.LogService;
import org.neo4j.kernel.impl.query.QueryExecutionEngine;
import org.neo4j.kernel.lifecycle.LifeSupport;
import org.neo4j.kernel.lifecycle.LifecycleAdapter;
import org.neo4j.server.security.auth.BasicAuthManager;
import org.neo4j.udc.UsageData;
/**
* The runtime environment in which user statements are executed. This is not a thread safe class, it is expected
* that a single worker thread will use this environment.
*/
public class StandardSessions extends LifecycleAdapter implements Sessions
{
private final GraphDatabaseAPI gds;
private final LifeSupport life = new LifeSupport();
private final UsageData usageData;
private final LogService logging;
private final Authentication authentication;
private CypherStatementRunner statementRunner;
private ThreadToStatementContextBridge txBridge;
public StandardSessions( GraphDatabaseAPI gds,
UsageData usageData, LogService logging,
ThreadToStatementContextBridge txBridge)
{
this.gds = gds;
this.usageData = usageData;
this.logging = logging;
this.txBridge = txBridge;
DependencyResolver dependencyResolver = gds.getDependencyResolver();
this.txBridge = dependencyResolver.resolveDependency( ThreadToStatementContextBridge.class );
this.authentication = authentication( dependencyResolver );
}
@Override
public void init() throws Throwable
{
life.init();
}
@Override
public void start() throws Throwable
{
QueryExecutionEngine queryExecutionEngine =
gds.getDependencyResolver().resolveDependency( QueryExecutionEngine.class );
statementRunner = new CypherStatementRunner( queryExecutionEngine );
life.start();
}
@Override
public void stop() throws Throwable
{
life.stop();
}
@Override
public void shutdown() throws Throwable
{
life.shutdown();
}
@Override
public Session newSession( boolean isEncrypted )
{
return new SessionStateMachine( usageData, gds, txBridge, statementRunner, logging, authentication );
}
private Authentication authentication( DependencyResolver dependencyResolver )
{
Config config = dependencyResolver.resolveDependency( Config.class );
if ( config.get( GraphDatabaseSettings.auth_enabled ) )
{
return new BasicAuthentication( dependencyResolver.resolveDependency( BasicAuthManager.class ), logging.getUserLogProvider() );
}
else
{
return Authentication.NONE;
}
}
}