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RotatableCsvOutputIT.java
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RotatableCsvOutputIT.java
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/*
* Copyright (c) 2002-2018 "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.output;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Transaction;
import org.neo4j.graphdb.factory.EnterpriseGraphDatabaseFactory;
import org.neo4j.kernel.configuration.Settings;
import org.neo4j.kernel.impl.enterprise.configuration.OnlineBackupSettings;
import org.neo4j.metrics.source.db.TransactionMetrics;
import org.neo4j.test.rule.TestDirectory;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertEquals;
import static org.neo4j.metrics.MetricsSettings.csvPath;
import static org.neo4j.metrics.MetricsSettings.csvRotationThreshold;
import static org.neo4j.metrics.MetricsTestHelper.readLongValueAndAssert;
import static org.neo4j.test.assertion.Assert.assertEventually;
public class RotatableCsvOutputIT
{
@Rule
public TestDirectory testDirectory = TestDirectory.testDirectory();
private File outputPath;
private GraphDatabaseService database;
@Before
public void setup() throws Throwable
{
outputPath = testDirectory.directory( "metrics" );
database = new EnterpriseGraphDatabaseFactory().newEmbeddedDatabaseBuilder( testDirectory.graphDbDir() )
.setConfig( csvPath, outputPath.getAbsolutePath() )
.setConfig( csvRotationThreshold, "21" )
.setConfig( OnlineBackupSettings.online_backup_enabled, Settings.FALSE )
.newGraphDatabase();
}
@After
public void tearDown() throws Exception
{
database.shutdown();
}
@Test
public void rotateMetricsFile() throws InterruptedException, IOException
{
try ( Transaction transaction = database.beginTx() )
{
database.createNode();
transaction.success();
}
File metricsFile = metricsCsv( outputPath, TransactionMetrics.TX_COMMITTED );
long committedTransactions = readLongValueAndAssert( metricsFile,
( newValue, currentValue ) -> newValue >= currentValue );
assertEquals( 1, committedTransactions );
metricsCsv( outputPath, TransactionMetrics.TX_COMMITTED, 1 );
try ( Transaction transaction = database.beginTx() )
{
database.createNode();
transaction.success();
}
// Since we rotated twice, file 3 is actually the original file
File metricsFile3 = metricsCsv( outputPath, TransactionMetrics.TX_COMMITTED, 2 );
long oldCommittedTransactions = readLongValueAndAssert( metricsFile3,
( newValue, currentValue ) -> newValue >= currentValue );
assertEquals( 1, oldCommittedTransactions );
}
private static File metricsCsv( File dbDir, String metric ) throws InterruptedException
{
return metricsCsv( dbDir, metric, 0 );
}
private static File metricsCsv( File dbDir, String metric, long index ) throws InterruptedException
{
File csvFile = new File( dbDir, index > 0 ? metric + ".csv." + index : metric + ".csv" );
assertEventually( "Metrics file should exist", csvFile::exists, is( true ), 40, SECONDS );
return csvFile;
}
}