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ImportToolTest.java
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ImportToolTest.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 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.tooling;
import org.junit.Rule;
import org.junit.Test;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.PrintStream;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import org.neo4j.csv.reader.IllegalMultilineFieldException;
import org.neo4j.function.primitive.PrimitiveIntPredicate;
import org.neo4j.graphdb.DynamicLabel;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Label;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.Relationship;
import org.neo4j.graphdb.ResourceIterator;
import org.neo4j.graphdb.Transaction;
import org.neo4j.helpers.Predicate;
import org.neo4j.helpers.collection.FilteringIterator;
import org.neo4j.helpers.collection.IteratorUtil;
import org.neo4j.helpers.collection.PrefetchingIterator;
import org.neo4j.io.fs.FileUtils;
import org.neo4j.kernel.impl.util.Validator;
import org.neo4j.kernel.impl.util.Validators;
import org.neo4j.test.EmbeddedDatabaseRule;
import org.neo4j.test.Mute;
import org.neo4j.test.RandomRule;
import org.neo4j.unsafe.impl.batchimport.cache.idmapping.string.DuplicateInputIdException;
import org.neo4j.unsafe.impl.batchimport.input.InputException;
import org.neo4j.unsafe.impl.batchimport.input.csv.Configuration;
import org.neo4j.unsafe.impl.batchimport.input.csv.Type;
import static java.lang.String.format;
import static java.lang.System.currentTimeMillis;
import static java.util.Arrays.asList;
import static org.hamcrest.CoreMatchers.containsString;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.neo4j.collection.primitive.PrimitiveIntCollections.alwaysTrue;
import static org.neo4j.graphdb.DynamicLabel.label;
import static org.neo4j.graphdb.DynamicRelationshipType.withName;
import static org.neo4j.helpers.ArrayUtil.join;
import static org.neo4j.helpers.Exceptions.contains;
import static org.neo4j.helpers.Exceptions.withMessage;
import static org.neo4j.helpers.collection.Iterables.filter;
import static org.neo4j.helpers.collection.IteratorUtil.count;
import static org.neo4j.helpers.collection.IteratorUtil.single;
import static org.neo4j.helpers.collection.IteratorUtil.singleOrNull;
import static org.neo4j.tooling.GlobalGraphOperations.at;
import static org.neo4j.tooling.ImportTool.MULTI_FILE_DELIMITER;
public class ImportToolTest
{
private static final int RELATIONSHIP_COUNT = 10_000;
private static final int NODE_COUNT = 100;
@Rule
public final EmbeddedDatabaseRule dbRule = new EmbeddedDatabaseRule( getClass() ).startLazily();
@Rule
public final RandomRule random = new RandomRule();
@Rule
public final Mute mute = Mute.mute( Mute.System.values() );
private int dataIndex;
@Test
public void usageMessageIncludeExample() throws Exception
{
String output = executeImportAndCatchOutput( "?" );
assertTrue( "Usage message should include example section, but was:" + output, output.contains( "Example:" ) );
}
@Test
public void usageMessagePrintedOnEmptyInputParameters()
{
String output = executeImportAndCatchOutput();
assertTrue( "Output should include usage section, but was:" + output, output.contains( "Example:" ) );
}
@Test
public void shouldImportWithAsManyDefaultsAsAvailable() throws Exception
{
// GIVEN
List<String> nodeIds = nodeIds();
Configuration config = Configuration.COMMAS;
// WHEN
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", nodeData( true, config, nodeIds, alwaysTrue() ).getAbsolutePath(),
"--relationships", relationshipData( true, config, nodeIds, alwaysTrue(), true ).getAbsolutePath() );
// THEN
verifyData();
}
@Test
public void shouldImportWithHeadersBeingInSeparateFiles() throws Exception
{
// GIVEN
List<String> nodeIds = nodeIds();
Configuration config = Configuration.TABS;
// WHEN
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--delimiter", "TAB",
"--array-delimiter", String.valueOf( config.arrayDelimiter() ),
"--nodes",
nodeHeader( config ).getAbsolutePath() + MULTI_FILE_DELIMITER +
nodeData( false, config, nodeIds, alwaysTrue() ).getAbsolutePath(),
"--relationships",
relationshipHeader( config ).getAbsolutePath() + MULTI_FILE_DELIMITER +
relationshipData( false, config, nodeIds, alwaysTrue(), true ).getAbsolutePath() );
// THEN
verifyData();
}
@Test
public void import4097Labels() throws Exception
{
// GIVEN
File header = file( fileName( "4097labels-header.csv" ) );
try ( PrintStream writer = new PrintStream( header ) )
{
writer.println( ":LABEL" );
}
File data = file( fileName( "4097labels.csv" ) );
try ( PrintStream writer = new PrintStream( data ) )
{
// Need to have unique names in order to get unique ids for labels. Want 4096 unique label ids present.
for ( int i = 0; i < 4096; i++ )
{
writer.println( "SIMPLE" + i );
}
// Then insert one with 3 array entries which will get ids greater than 4096. These cannot be inlined
// due 36 bits being divided into 3 parts of 12 bits each and 4097 > 2^12, thus these labels will be
// need to be dynamic records.
writer.println( "FIRST 4096|SECOND 4096|" );
}
// WHEN
importTool( "--into", dbRule.getStoreDirAbsolutePath(),
"--delimiter", "TAB",
"--array-delimiter", "|",
"--nodes", header.getAbsolutePath() + MULTI_FILE_DELIMITER + data.getAbsolutePath() );
// THEN
try ( Transaction tx = dbRule.beginTx() )
{
int nodeCount = count( at( dbRule ).getAllNodes() );
assertEquals( 4097, nodeCount );
tx.success();
ResourceIterator<Node> nodes = dbRule.findNodes( DynamicLabel.label( "FIRST 4096" ) );
assertEquals (1, IteratorUtil.asList(nodes).size() );
nodes = dbRule.findNodes( DynamicLabel.label( "SECOND 4096" ) );
assertEquals( 1, IteratorUtil.asList( nodes ).size() );
}
}
@Test
public void shouldFailIfHeaderHasLessColumnsThanData() throws Exception
{
// GIVEN
List<String> nodeIds = nodeIds();
Configuration config = Configuration.TABS;
// WHEN data file contains more columns than header file
int extraColumns = 3;
try
{
executeImportAndCatchOutput(
"--into", dbRule.getStoreDirAbsolutePath(),
"--delimiter", "TAB",
"--array-delimiter", String.valueOf( config.arrayDelimiter() ),
"--nodes", nodeHeader( config ).getAbsolutePath() + MULTI_FILE_DELIMITER +
nodeData( false, config, nodeIds, alwaysTrue(), Charset.defaultCharset(), extraColumns )
.getAbsolutePath(),
"--relationships", relationshipHeader( config ).getAbsolutePath() + MULTI_FILE_DELIMITER +
relationshipData( false, config, nodeIds, alwaysTrue(), true ).getAbsolutePath() );
fail( "Should have thrown exception" );
}
catch ( InputException e )
{
// THEN
assertTrue( e.getMessage().contains( "Extra column not present in header on line" ) );
}
}
@Test
public void shouldWarnIfHeaderHasLessColumnsThanDataWhenToldTo() throws Exception
{
// GIVEN
List<String> nodeIds = nodeIds();
Configuration config = Configuration.TABS;
File bad = file( "bad.log" );
// WHEN data file contains more columns than header file
int extraColumns = 3;
executeImportAndCatchOutput(
"--into", dbRule.getStoreDirAbsolutePath(),
"--bad", bad.getAbsolutePath(),
"--bad-tolerance", Integer.toString( nodeIds.size() * extraColumns ),
"--ignore-extra-columns",
"--delimiter", "TAB",
"--array-delimiter", String.valueOf( config.arrayDelimiter() ),
"--nodes", nodeHeader( config ).getAbsolutePath() + MULTI_FILE_DELIMITER +
nodeData( false, config, nodeIds, alwaysTrue(), Charset.defaultCharset(), extraColumns )
.getAbsolutePath(),
"--relationships", relationshipHeader( config ).getAbsolutePath() + MULTI_FILE_DELIMITER +
relationshipData( false, config, nodeIds, alwaysTrue(), true ).getAbsolutePath() );
// THEN
String badContents = FileUtils.readTextFile( bad, Charset.defaultCharset() );
assertTrue( badContents.contains( "Extra column not present in header on line" ) );
}
@Test
public void shouldImportSplitInputFiles() throws Exception
{
// GIVEN
List<String> nodeIds = nodeIds();
Configuration config = Configuration.COMMAS;
// WHEN
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", // One group with one header file and one data file
nodeHeader( config ).getAbsolutePath() + MULTI_FILE_DELIMITER +
nodeData( false, config, nodeIds, lines( 0, NODE_COUNT/2 ) ).getAbsolutePath(),
"--nodes", // One group with two data files, where the header sits in the first file
nodeData( true, config, nodeIds,
lines( NODE_COUNT / 2, NODE_COUNT * 3 / 4 ) ).getAbsolutePath() + MULTI_FILE_DELIMITER +
nodeData( false, config, nodeIds, lines( NODE_COUNT * 3 / 4, NODE_COUNT ) ).getAbsolutePath(),
"--relationships",
relationshipHeader( config ).getAbsolutePath() + MULTI_FILE_DELIMITER +
relationshipData( false, config, nodeIds, alwaysTrue(), true ).getAbsolutePath() );
// THEN
verifyData();
}
@Test
public void shouldImportMultipleInputsWithAddedLabelsAndDefaultRelationshipType() throws Exception
{
// GIVEN
List<String> nodeIds = nodeIds();
Configuration config = Configuration.COMMAS;
final String[] firstLabels = { "AddedOne", "AddedTwo" };
final String[] secondLabels = { "AddedThree" };
final String firstType = "TYPE_1";
final String secondType = "TYPE_2";
// WHEN
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes:" + join( firstLabels, ":" ),
nodeData( true, config, nodeIds, lines( 0, NODE_COUNT/2 ) ).getAbsolutePath(),
"--nodes:" + join( secondLabels, ":" ),
nodeData( true, config, nodeIds, lines( NODE_COUNT/2, NODE_COUNT ) ).getAbsolutePath(),
"--relationships:" + firstType,
relationshipData( true, config, nodeIds, lines( 0, RELATIONSHIP_COUNT/2 ), false ).getAbsolutePath(),
"--relationships:" + secondType,
relationshipData( true, config, nodeIds,
lines( RELATIONSHIP_COUNT/2, RELATIONSHIP_COUNT ), false ).getAbsolutePath() );
// THEN
verifyData(
new Validator<Node>()
{
@Override
public void validate( Node node )
{
if ( node.getId() < NODE_COUNT/2 )
{
assertNodeHasLabels( node, firstLabels );
}
else
{
assertNodeHasLabels( node, secondLabels );
}
}
},
new Validator<Relationship>()
{
@Override
public void validate( Relationship relationship )
{
if ( relationship.getId() < RELATIONSHIP_COUNT/2 )
{
assertEquals( firstType, relationship.getType().name() );
}
else
{
assertEquals( secondType, relationship.getType().name() );
}
}
} );
}
@Test
public void shouldImportOnlyNodes() throws Exception
{
// GIVEN
List<String> nodeIds = nodeIds();
Configuration config = Configuration.COMMAS;
// WHEN
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", nodeData( true, config, nodeIds, alwaysTrue() ).getAbsolutePath() );
// no relationships
// THEN
GraphDatabaseService db = dbRule.getGraphDatabaseService();
try ( Transaction tx = db.beginTx() )
{
int nodeCount = 0;
for ( Node node : at( db ).getAllNodes() )
{
assertTrue( node.hasProperty( "name" ) );
nodeCount++;
assertFalse( node.hasRelationship() );
}
assertEquals( NODE_COUNT, nodeCount );
tx.success();
}
}
@Test
public void shouldImportGroupsOfOverlappingIds() throws Exception
{
// GIVEN
List<String> groupOneNodeIds = asList( "1", "2", "3" );
List<String> groupTwoNodeIds = asList( "4", "5", "2" );
List<RelationshipDataLine> rels = asList(
relationship( "1", "4", "TYPE" ),
relationship( "2", "5", "TYPE" ),
relationship( "3", "2", "TYPE" ) );
Configuration config = Configuration.COMMAS;
String groupOne = "Actor";
String groupTwo = "Movie";
// WHEN
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", nodeHeader( config, groupOne ) + MULTI_FILE_DELIMITER +
nodeData( false, config, groupOneNodeIds, alwaysTrue() ),
"--nodes", nodeHeader( config, groupTwo ) + MULTI_FILE_DELIMITER +
nodeData( false, config, groupTwoNodeIds, alwaysTrue() ),
"--relationships", relationshipHeader( config, groupOne, groupTwo, true ) + MULTI_FILE_DELIMITER +
relationshipData( false, config, rels.iterator(), alwaysTrue(), true ) );
// THEN
GraphDatabaseService db = dbRule.getGraphDatabaseService();
try ( Transaction tx = db.beginTx() )
{
int nodeCount = 0;
for ( Node node : at( db ).getAllNodes() )
{
assertTrue( node.hasProperty( "name" ) );
nodeCount++;
assertEquals( 1, count( node.getRelationships() ) );
}
assertEquals( 6, nodeCount );
tx.success();
}
}
@Test
public void shouldNotBeAbleToMixSpecifiedAndUnspecifiedGroups() throws Exception
{
// GIVEN
List<String> groupOneNodeIds = asList( "1", "2", "3" );
List<String> groupTwoNodeIds = asList( "4", "5", "2" );
Configuration config = Configuration.COMMAS;
// WHEN
try
{
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", nodeHeader( config, "MyGroup" ).getAbsolutePath() + MULTI_FILE_DELIMITER +
nodeData( false, config, groupOneNodeIds, alwaysTrue() ).getAbsolutePath(),
"--nodes", nodeHeader( config ).getAbsolutePath() + MULTI_FILE_DELIMITER +
nodeData( false, config, groupTwoNodeIds, alwaysTrue() ).getAbsolutePath() );
fail( "Should have failed" );
}
catch ( Exception e )
{
assertExceptionContains( e, "Mixing specified", IllegalStateException.class );
}
}
@Test
public void shouldImportWithoutTypeSpecifiedInRelationshipHeaderbutWithDefaultTypeInArgument() throws Exception
{
// GIVEN
List<String> nodeIds = nodeIds();
Configuration config = Configuration.COMMAS;
String type = randomType();
// WHEN
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", nodeData( true, config, nodeIds, alwaysTrue() ).getAbsolutePath(),
// there will be no :TYPE specified in the header of the relationships below
"--relationships:" + type,
relationshipData( true, config, nodeIds, alwaysTrue(), false ).getAbsolutePath() );
// THEN
verifyData();
}
@Test
public void shouldIncludeSourceInformationInNodeIdCollisionError() throws Exception
{
// GIVEN
List<String> nodeIds = asList( "a", "b", "c", "d", "e", "f", "a", "g" );
Configuration config = Configuration.COMMAS;
File nodeHeaderFile = nodeHeader( config );
File nodeData1 = nodeData( false, config, nodeIds, lines( 0, 4 ) );
File nodeData2 = nodeData( false, config, nodeIds, lines( 4, nodeIds.size() ) );
// WHEN
try
{
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", nodeHeaderFile.getAbsolutePath() + MULTI_FILE_DELIMITER +
nodeData1.getAbsolutePath() + MULTI_FILE_DELIMITER +
nodeData2.getAbsolutePath() );
fail( "Should have failed with duplicate node IDs" );
}
catch ( Exception e )
{
// THEN
assertExceptionContains( e, nodeData1.getPath() + ":" + 1, DuplicateInputIdException.class );
assertExceptionContains( e, nodeData2.getPath() + ":" + 3, DuplicateInputIdException.class );
}
}
@Test
public void shouldSkipDuplicateNodesIfToldTo() throws Exception
{
// GIVEN
List<String> nodeIds = asList( "a", "b", "c", "d", "e", "f", "a", "g" );
Configuration config = Configuration.COMMAS;
File nodeHeaderFile = nodeHeader( config );
File nodeData1 = nodeData( false, config, nodeIds, lines( 0, 4 ) );
File nodeData2 = nodeData( false, config, nodeIds, lines( 4, nodeIds.size() ) );
// WHEN
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--skip-duplicate-nodes",
"--nodes", nodeHeaderFile.getAbsolutePath() + MULTI_FILE_DELIMITER +
nodeData1.getAbsolutePath() + MULTI_FILE_DELIMITER +
nodeData2.getAbsolutePath() );
// THEN
GraphDatabaseService db = dbRule.getGraphDatabaseService();
try ( Transaction tx = db.beginTx() )
{
Iterator<Node> nodes = at( db ).getAllNodes().iterator();
Iterator<String> expectedIds = FilteringIterator.noDuplicates( nodeIds.iterator() );
while ( expectedIds.hasNext() )
{
assertTrue( nodes.hasNext() );
assertEquals( expectedIds.next(), nodes.next().getProperty( "id" ) );
}
assertFalse( nodes.hasNext() );
tx.success();
}
finally
{
db.shutdown();
}
}
@Test
public void shouldLogRelationshipsReferringToMissingNode() throws Exception
{
// GIVEN
List<String> nodeIds = asList( "a", "b", "c" );
Configuration config = Configuration.COMMAS;
File nodeData = nodeData( true, config, nodeIds, alwaysTrue() );
List<RelationshipDataLine> relationships = Arrays.asList(
// header line 1 of file1
relationship( "a", "b", "TYPE", "aa" ), // line 2 of file1
relationship( "c", "bogus", "TYPE", "bb" ), // line 3 of file1
relationship( "b", "c", "KNOWS", "cc" ), // line 1 of file2
relationship( "c", "a", "KNOWS", "dd" ), // line 2 of file2
relationship( "missing", "a", "KNOWS", "ee" ) ); // line 3 of file2
File relationshipData1 = relationshipData( true, config, relationships.iterator(), lines( 0, 2 ), true );
File relationshipData2 = relationshipData( false, config, relationships.iterator(), lines( 2, 5 ), true );
File bad = file( "bad.log" );
// WHEN importing data where some relationships refer to missing nodes
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", nodeData.getAbsolutePath(),
"--bad", bad.getAbsolutePath(),
"--bad-tolerance", "2",
"--relationships", relationshipData1.getAbsolutePath() + MULTI_FILE_DELIMITER +
relationshipData2.getAbsolutePath() );
// THEN
String badContents = FileUtils.readTextFile( bad, Charset.defaultCharset() );
assertTrue( "Didn't contain first bad relationship",
badContents.contains( relationshipData1.getAbsolutePath() + ":3" ) );
assertTrue( "Didn't contain second bad relationship",
badContents.contains( relationshipData2.getAbsolutePath() + ":3" ) );
verifyRelationships( relationships );
}
@Test
public void shouldFailIfTooManyBadRelationships() throws Exception
{
// GIVEN
List<String> nodeIds = asList( "a", "b", "c" );
Configuration config = Configuration.COMMAS;
File nodeData = nodeData( true, config, nodeIds, alwaysTrue() );
List<RelationshipDataLine> relationships = Arrays.asList(
// header line 1 of file1
relationship( "a", "b", "TYPE" ), // line 2 of file1
relationship( "c", "bogus", "TYPE" ), // line 3 of file1
relationship( "b", "c", "KNOWS" ), // line 1 of file2
relationship( "c", "a", "KNOWS" ), // line 2 of file2
relationship( "missing", "a", "KNOWS" ) ); // line 3 of file2
File relationshipData1 = relationshipData( true, config, relationships.iterator(), lines( 0, 2 ), true );
File relationshipData2 = relationshipData( false, config, relationships.iterator(), lines( 2, 5 ), true );
File bad = file( "bad.log" );
// WHEN importing data where some relationships refer to missing nodes
try
{
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", nodeData.getAbsolutePath(),
"--bad", bad.getAbsolutePath(),
"--bad-tolerance", "1",
"--relationships", relationshipData1.getAbsolutePath() + MULTI_FILE_DELIMITER +
relationshipData2.getAbsolutePath() ) ;
}
catch ( Exception e )
{
// THEN
assertExceptionContains( e, relationshipData2.getAbsolutePath() + ":3", InputException.class );
}
}
@Test
public void shouldBeAbleToDisableSkippingOfBadRelationships() throws Exception
{
// GIVEN
List<String> nodeIds = asList( "a", "b", "c" );
Configuration config = Configuration.COMMAS;
File nodeData = nodeData( true, config, nodeIds, alwaysTrue() );
List<RelationshipDataLine> relationships = Arrays.asList(
// header line 1 of file1
relationship( "a", "b", "TYPE" ), // line 2 of file1
relationship( "c", "bogus", "TYPE" ) ); // line 3 of file1
File relationshipData1 = relationshipData( true, config, relationships.iterator(), lines( 0, 2 ), true );
File relationshipData2 = relationshipData( false, config, relationships.iterator(), lines( 2, 5 ), true );
File bad = file( "bad.log" );
// WHEN importing data where some relationships refer to missing nodes
try
{
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", nodeData.getAbsolutePath(),
"--bad", bad.getAbsolutePath(),
"--skip-bad-relationships", "false",
"--relationships", relationshipData1.getAbsolutePath() + MULTI_FILE_DELIMITER +
relationshipData2.getAbsolutePath() ) ;
}
catch ( Exception e )
{
// THEN
assertExceptionContains( e, relationshipData1.getAbsolutePath() + ":3", InputException.class );
}
}
@Test
public void shouldHandleAdditiveLabelsWithSpaces() throws Exception
{
// GIVEN
List<String> nodeIds = nodeIds();
Configuration config = Configuration.COMMAS;
final Label label1 = DynamicLabel.label( "My First Label" );
final Label label2 = DynamicLabel.label( "My Other Label" );
// WHEN
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes:My First Label:My Other Label",
nodeData( true, config, nodeIds, alwaysTrue() ).getAbsolutePath(),
"--relationships", relationshipData( true, config, nodeIds, alwaysTrue(), true ).getAbsolutePath() );
// THEN
verifyData( new Validator<Node>()
{
@Override
public void validate( Node node )
{
assertTrue( node.hasLabel( label1 ) );
assertTrue( node.hasLabel( label2 ) );
}
}, Validators.<Relationship>emptyValidator() );
}
@Test
public void shouldImportFromInputDataEncodedWithSpecificCharset() throws Exception
{
// GIVEN
List<String> nodeIds = nodeIds();
Configuration config = Configuration.COMMAS;
Charset charset = Charset.forName( "UTF-16" );
// WHEN
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--input-encoding", charset.name(),
"--nodes", nodeData( true, config, nodeIds, alwaysTrue(), charset ).getAbsolutePath(),
"--relationships", relationshipData( true, config, nodeIds, alwaysTrue(), true, charset )
.getAbsolutePath() );
// THEN
verifyData();
}
@Test
public void shouldDisallowImportWithoutNodesInput() throws Exception
{
// GIVEN
List<String> nodeIds = nodeIds();
Configuration config = Configuration.COMMAS;
// WHEN
try
{
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--relationships", relationshipData( true, config, nodeIds, alwaysTrue(), true ).getAbsolutePath() );
fail( "Should have failed" );
}
catch ( IllegalArgumentException e )
{
// THEN
assertThat( e.getMessage(), containsString( "No node input" ) );
}
}
@Test
public void shouldBeAbleToImportAnonymousNodes() throws Exception
{
// GIVEN
List<String> nodeIds = asList( "1", "", "", "", "3", "", "", "", "", "", "5" );
Configuration config = Configuration.COMMAS;
List<RelationshipDataLine> relationshipData = asList( relationship( "1", "3", "KNOWS" ) );
// WHEN
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", nodeData( true, config, nodeIds, alwaysTrue() ).getAbsolutePath(),
"--relationships", relationshipData( true, config, relationshipData.iterator(),
alwaysTrue(), true ).getAbsolutePath() );
// THEN
GraphDatabaseService db = dbRule.getGraphDatabaseService();
try ( Transaction tx = db.beginTx() )
{
Iterable<Node> allNodes = at( db ).getAllNodes();
int anonymousCount = 0;
for ( final String id : nodeIds )
{
if ( id.isEmpty() )
{
anonymousCount++;
}
else
{
assertNotNull( single( filter( nodeFilter( id ), allNodes.iterator() ) ) );
}
}
assertEquals( anonymousCount, count( filter( nodeFilter( "" ), allNodes.iterator() ) ) );
tx.success();
}
}
@Test
public void shouldDisallowMultilineFieldsByDefault() throws Exception
{
// GIVEN
File data = data( ":ID,name", "1,\"This is a line with\nnewlines in\"" );
// WHEN
try
{
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", data.getAbsolutePath() );
}
catch ( Exception e )
{
// THEN
assertExceptionContains( e, "Multi-line", IllegalMultilineFieldException.class );
}
}
@Test
public void shouldAllowMultilineFieldsWhenEnabled() throws Exception
{
// GIVEN
File data = data( ":ID,name", "1,\"This is a line with\nnewlines in\"" );
// WHEN
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", data.getAbsolutePath(),
"--multiline-fields", "true" );
// THEN
GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
try ( Transaction tx = db.beginTx() )
{
ResourceIterator<Node> allNodes = at( db ).getAllNodes().iterator();
Node node = IteratorUtil.single( allNodes );
allNodes.close();
assertEquals( "This is a line with\nnewlines in", node.getProperty( "name" ) );
tx.success();
}
}
@Test
public void shouldSkipEmptyFiles() throws Exception
{
// GIVEN
File data = data( "" );
// WHEN
importTool( "--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", data.getAbsolutePath() );
// THEN
GraphDatabaseService graphDatabaseService = dbRule.getGraphDatabaseService();
try ( Transaction tx = graphDatabaseService.beginTx() )
{
ResourceIterator<Node> allNodes = at( graphDatabaseService ).getAllNodes().iterator();
assertFalse( "Expected database to be empty", allNodes.hasNext() );
tx.success();
}
}
@Test
public void shouldIgnoreEmptyQuotedStringsIfConfiguredTo() throws Exception
{
// GIVEN
File data = data(
":ID,one,two,three",
"1,\"\",,value" );
// WHEN
importTool(
"--into", dbRule.getStoreDirAbsolutePath(),
"--nodes", data.getAbsolutePath(),
"--ignore-empty-strings", "true" );
// THEN
GraphDatabaseService db = dbRule.getGraphDatabaseAPI();
try ( Transaction tx = db.beginTx() )
{
Node node = single( at( db ).getAllNodes() );
assertEquals( "three", single( node.getPropertyKeys() ) );
tx.success();
}
}
private File data( String... lines ) throws Exception
{
File file = file( fileName( "data.csv" ) );
try ( PrintStream writer = writer( file, Charset.defaultCharset() ) )
{
for ( String line : lines )
{
writer.println( line );
}
}
return file;
}
private Predicate<Node> nodeFilter( final String id )
{
return new Predicate<Node>()
{
@Override
public boolean accept( Node node )
{
return node.getProperty( "id", "" ).equals( id );
}
};
}
protected void assertNodeHasLabels( Node node, String[] names )
{
for ( String name : names )
{
assertTrue( node + " didn't have label " + name + ", it had labels " + node.getLabels(),
node.hasLabel( label( name ) ) );
}
}
private void verifyData()
{
verifyData( Validators.<Node>emptyValidator(), Validators.<Relationship>emptyValidator() );
}
private void verifyData(
Validator<Node> nodeAdditionalValidation,
Validator<Relationship> relationshipAdditionalValidation )
{
GraphDatabaseService db = dbRule.getGraphDatabaseService();
try ( Transaction tx = db.beginTx() )
{
int nodeCount = 0, relationshipCount = 0;
for ( Node node : at( db ).getAllNodes() )
{
assertTrue( node.hasProperty( "name" ) );
nodeAdditionalValidation.validate( node );
nodeCount++;
}
assertEquals( NODE_COUNT, nodeCount );
for ( Relationship relationship : at( db ).getAllRelationships() )
{
assertTrue( relationship.hasProperty( "created" ) );
relationshipAdditionalValidation.validate( relationship );
relationshipCount++;
}
assertEquals( RELATIONSHIP_COUNT, relationshipCount );
tx.success();
}
}
private void verifyRelationships( List<RelationshipDataLine> relationships )
{
GraphDatabaseService db = dbRule.getGraphDatabaseService();
Map<String,Node> nodesById = allNodesById( db );
try ( Transaction tx = db.beginTx() )
{
for ( RelationshipDataLine relationship : relationships )
{
Node startNode = nodesById.get( relationship.startNodeId );
Node endNode = nodesById.get( relationship.endNodeId );
if ( startNode == null || endNode == null )
{
// OK this is a relationship refering to a missing node, skip it
continue;
}
assertNotNull( relationship.toString(), findRelationship( startNode, endNode, relationship ) );
}
tx.success();
}
}
private Relationship findRelationship( Node startNode, final Node endNode, final RelationshipDataLine relationship )
{
return singleOrNull( filter( new Predicate<Relationship>()
{
@Override
public boolean accept( Relationship item )
{
return item.getEndNode().equals( endNode ) && item.getProperty( "name" ).equals( relationship.name );
}
}, startNode.getRelationships( withName( relationship.type ) ).iterator() ) );
}
private Map<String,Node> allNodesById( GraphDatabaseService db )
{
try ( Transaction tx = db.beginTx() )
{
Map<String,Node> nodes = new HashMap<>();
for ( Node node : at( db ).getAllNodes() )
{
nodes.put( idOf( node ), node );
}
tx.success();
return nodes;
}
}
private String idOf( Node node )
{
return (String) node.getProperty( "id" );
}
private List<String> nodeIds()
{
return nodeIds( NODE_COUNT );
}
private List<String> nodeIds( int count )
{
List<String> ids = new ArrayList<>();
for ( int i = 0; i < count; i++ )
{
ids.add( randomNodeId() );
}
return ids;
}
private String randomNodeId()
{
return UUID.randomUUID().toString();
}
private File nodeData( boolean includeHeader, Configuration config, List<String> nodeIds,
PrimitiveIntPredicate linePredicate ) throws Exception
{
return nodeData( includeHeader, config, nodeIds, linePredicate, Charset.defaultCharset() );
}
private File nodeData( boolean includeHeader, Configuration config, List<String> nodeIds,
PrimitiveIntPredicate linePredicate, Charset encoding ) throws Exception
{
return nodeData( includeHeader, config, nodeIds, linePredicate, encoding, 0 );
}
private File nodeData( boolean includeHeader, Configuration config, List<String> nodeIds,
PrimitiveIntPredicate linePredicate, Charset encoding, int extraColumns ) throws Exception
{
File file = file( fileName( "nodes.csv" ) );
try ( PrintStream writer = writer( file, encoding ) )
{
if ( includeHeader )
{
writeNodeHeader( writer, config, null );
}
writeNodeData( writer, config, nodeIds, linePredicate, extraColumns );
}
return file;
}
private PrintStream writer( File file, Charset encoding ) throws Exception
{
return new PrintStream( file, encoding.name() );
}
private File nodeHeader( Configuration config ) throws Exception
{
return nodeHeader( config, null );
}
private File nodeHeader( Configuration config, String idGroup ) throws Exception
{
return nodeHeader( config, idGroup, Charset.defaultCharset() );
}
private File nodeHeader( Configuration config, String idGroup, Charset encoding ) throws Exception
{