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OnlineBackupCommandConfigLoaderTest.java
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OnlineBackupCommandConfigLoaderTest.java
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/*
* Copyright (c) 2002-2017 "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.backup;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.file.Path;
import java.util.Optional;
import org.neo4j.causalclustering.core.CausalClusteringSettings;
import org.neo4j.commandline.admin.CommandFailed;
import org.neo4j.kernel.configuration.Config;
import org.neo4j.test.rule.TestDirectory;
import static java.lang.String.format;
import static org.hamcrest.Matchers.any;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
public class OnlineBackupCommandConfigLoaderTest
{
@Rule
public TestDirectory testDirectory = TestDirectory.testDirectory();
@Rule
public ExpectedException expected = ExpectedException.none();
OnlineBackupCommandConfigLoader subject;
Path configDir;
Path homeDir;
@Before
public void setup() throws IOException
{
configDir = testDirectory.directory( "config" ).toPath();
setupConfigInDirectory( configDir );
homeDir = testDirectory.directory( "home" ).toPath();
setupConfigInDirectory( homeDir );
subject = new OnlineBackupCommandConfigLoader( homeDir, configDir );
}
private void setupConfigInDirectory( Path configDir ) throws IOException
{
String anyValidSetting = format( "dbms.backup.address = %s\n", "localhost:1234");
File configFile = configDir.resolve( "neo4j.conf" ).toFile();
appendToFile( configFile, anyValidSetting );
}
@Test
public void errorHandledForNonExistingAdditionalConfigFile() throws CommandFailed, IOException
{
// given
File additionalConf = testDirectory.file( "neo4j.conf" );
additionalConf.delete();
// and
expected.expect( CommandFailed.class );
expected.expectCause( any( FileNotFoundException.class ) );
// expect
assertFalse( additionalConf.exists() );
subject.loadConfig( Optional.of( additionalConf.toPath() ), new File( "destination" ) );
}
@Test
public void prioritiseConfigDirOverHomeDir() throws IOException, CommandFailed
{
// given
File configDirConfigFile = configDir.resolve( "neo4j.conf" ).toFile();
appendToFile( configDirConfigFile, "causal_clustering.expected_core_cluster_size=4" );
// and
File homeDirConfigFile = homeDir.resolve( "neo4j.conf" ).toFile();
appendToFile( homeDirConfigFile, "causal_clustering.expected_core_cluster_size=5\n" );
appendToFile( homeDirConfigFile, "causal_clustering.raft_in_queue_max_batch=21" );
// when
Config config = subject.loadConfig( Optional.empty(), new File( "destination" ) );
// then
assertEquals( Integer.valueOf( 4 ), config.get( CausalClusteringSettings.expected_core_cluster_size ) );
assertEquals( Integer.valueOf( 64 ), config.get( CausalClusteringSettings.raft_in_queue_max_batch ) );
}
@Test
public void prioritiseAdditionalOverConfigDir() throws IOException, CommandFailed
{
// given
File configDirConfigFile = configDir.resolve( "neo4j.conf" ).toFile();
appendToFile( configDirConfigFile, "causal_clustering.expected_core_cluster_size=4\n" );
appendToFile( configDirConfigFile, "causal_clustering.raft_in_queue_max_batch=21" );
// and
File additionalConfigFile = testDirectory.file( "additional-neo4j.conf" );
appendToFile( additionalConfigFile, "causal_clustering.expected_core_cluster_size=5" );
// when
Config config = subject.loadConfig( Optional.of( additionalConfigFile.toPath() ),
new File( "destination" ) );
// then
assertEquals( Integer.valueOf( 5 ), config.get( CausalClusteringSettings.expected_core_cluster_size ) );
assertEquals( Integer.valueOf( 21 ), config.get( CausalClusteringSettings.raft_in_queue_max_batch ) );
}
private static void appendToFile( File file, String string ) throws IOException
{
BufferedWriter bufferedWriter = new BufferedWriter( new FileWriter( file, true ) );
bufferedWriter.append( string );
bufferedWriter.close();
}
}