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MetricsExtension.java
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MetricsExtension.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.metrics;
import com.codahale.metrics.MetricRegistry;
import org.neo4j.graphdb.DependencyResolver;
import org.neo4j.io.pagecache.monitoring.PageCacheMonitor;
import org.neo4j.kernel.IdGeneratorFactory;
import org.neo4j.kernel.configuration.Config;
import org.neo4j.kernel.impl.api.LogRotationMonitor;
import org.neo4j.kernel.impl.logging.LogService;
import org.neo4j.kernel.impl.spi.KernelContext;
import org.neo4j.kernel.impl.transaction.TransactionCounters;
import org.neo4j.kernel.impl.transaction.log.checkpoint.CheckPointerMonitor;
import org.neo4j.kernel.impl.transaction.state.DataSourceManager;
import org.neo4j.kernel.lifecycle.LifeSupport;
import org.neo4j.kernel.lifecycle.Lifecycle;
import org.neo4j.kernel.monitoring.Monitors;
import org.neo4j.logging.Log;
import org.neo4j.metrics.output.OutputBuilder;
import org.neo4j.metrics.source.Neo4jMetricsBuilder;
public class MetricsExtension implements Lifecycle
{
private final LifeSupport life = new LifeSupport();
private final LogService logService;
private final Config configuration;
private final Monitors monitors;
private final TransactionCounters transactionCounters;
private final PageCacheMonitor pageCacheCounters;
private final CheckPointerMonitor checkPointerMonitor;
private final IdGeneratorFactory idGeneratorFactory;
private final LogRotationMonitor logRotationMonitor;
private final DataSourceManager dataSourceManager;
private final DependencyResolver dependencyResolver;
private final KernelContext kernelContext;
public MetricsExtension( MetricsKernelExtensionFactory.Dependencies dependencies )
{
logService = dependencies.logService();
configuration = dependencies.configuration();
monitors = dependencies.monitors();
dataSourceManager = dependencies.dataSourceManager();
transactionCounters = dependencies.transactionCounters();
pageCacheCounters = dependencies.pageCacheCounters();
checkPointerMonitor = dependencies.checkPointerCounters();
logRotationMonitor = dependencies.logRotationCounters();
idGeneratorFactory = dependencies.idGeneratorFactory();
dependencyResolver = dependencies.getDependencyResolver();
kernelContext = dependencies.kernelContext();
}
@Override
public void init()
{
Log logger = logService.getUserLog( getClass() );
logger.info( "Initiating metrics..." );
// Setup metrics
final MetricRegistry registry = new MetricRegistry();
// Setup output
boolean outputBuilt = new OutputBuilder( configuration, registry, logger, kernelContext, life ).build();
if ( outputBuilt )
{
// Setup metric gathering
boolean metricsBuilt = new Neo4jMetricsBuilder( registry, configuration, monitors,
dataSourceManager, transactionCounters, pageCacheCounters, checkPointerMonitor, logRotationMonitor,
idGeneratorFactory, dependencyResolver, logService, life ).build();
}
life.init();
}
@Override
public void start()
{
life.start();
}
@Override
public void stop()
{
life.stop();
}
@Override
public void shutdown()
{
life.shutdown();
}
}