-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
NodeInUseWithCorrectLabelsCheck.java
152 lines (137 loc) · 5.73 KB
/
NodeInUseWithCorrectLabelsCheck.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
/*
* 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 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.consistency.checking.full;
import org.neo4j.collection.primitive.PrimitiveLongCollections;
import org.neo4j.consistency.checking.CheckerEngine;
import org.neo4j.consistency.checking.ComparativeRecordChecker;
import org.neo4j.consistency.checking.LabelChainWalker;
import org.neo4j.consistency.report.ConsistencyReport;
import org.neo4j.consistency.store.RecordAccess;
import org.neo4j.consistency.store.RecordReference;
import org.neo4j.kernel.impl.store.DynamicNodeLabels;
import org.neo4j.kernel.impl.store.NodeLabels;
import org.neo4j.kernel.impl.store.NodeLabelsField;
import org.neo4j.kernel.impl.store.record.AbstractBaseRecord;
import org.neo4j.kernel.impl.store.record.DynamicRecord;
import org.neo4j.kernel.impl.store.record.NodeRecord;
import static java.util.Arrays.sort;
public class NodeInUseWithCorrectLabelsCheck
<RECORD extends AbstractBaseRecord, REPORT extends ConsistencyReport.NodeInUseWithCorrectLabelsReport>
implements ComparativeRecordChecker<RECORD, NodeRecord, REPORT>
{
private final long[] expectedLabels;
public NodeInUseWithCorrectLabelsCheck( long[] expectedLabels )
{
this.expectedLabels = sortAndDeduplicate( expectedLabels );
}
private long[] sortAndDeduplicate( long[] labels )
{
sort( labels );
return PrimitiveLongCollections.dedup( labels );
}
@Override
public void checkReference( RECORD record, NodeRecord nodeRecord,
CheckerEngine<RECORD, REPORT> engine, RecordAccess records )
{
if ( nodeRecord.inUse() )
{
NodeLabels nodeLabels = NodeLabelsField.parseLabelsField( nodeRecord );
if ( nodeLabels instanceof DynamicNodeLabels )
{
DynamicNodeLabels dynamicNodeLabels = (DynamicNodeLabels) nodeLabels;
long firstRecordId = dynamicNodeLabels.getFirstDynamicRecordId();
RecordReference<DynamicRecord> firstRecordReference = records.nodeLabels( firstRecordId );
ExpectedNodeLabelsChecker expectedNodeLabelsChecker = new ExpectedNodeLabelsChecker( nodeRecord );
LabelChainWalker<RECORD,REPORT> checker = new LabelChainWalker<>( expectedNodeLabelsChecker );
engine.comparativeCheck( firstRecordReference, checker );
nodeRecord.getDynamicLabelRecords(); // I think this is empty in production
}
else
{
long[] actualLabels = nodeLabels.get( null );
REPORT report = engine.report();
validateLabelIds( nodeRecord, actualLabels, report );
}
}
else
{
engine.report().nodeNotInUse( nodeRecord );
}
}
private void validateLabelIds( NodeRecord nodeRecord, long[] actualLabels, REPORT report )
{
actualLabels = sortAndDeduplicate( actualLabels );
int expectedIndex = 0;
int actualIndex = 0;
do
{
long expectedLabel = expectedLabels[expectedIndex];
long actualLabel = actualLabels[actualIndex];
if ( expectedLabel < actualLabel )
{ // node store has a label which isn't in label scan store
report.nodeLabelNotInIndex( nodeRecord, expectedLabel );
expectedIndex++;
}
else if ( expectedLabel > actualLabel )
{ // label scan store has a label which isn't in node store
report.nodeDoesNotHaveExpectedLabel( nodeRecord, actualLabel );
actualIndex++;
}
else
{ // both match
expectedIndex++;
actualIndex++;
}
}
while ( expectedIndex < expectedLabels.length && actualIndex < actualLabels.length );
while ( expectedIndex < expectedLabels.length )
{
report.nodeLabelNotInIndex( nodeRecord, expectedLabels[expectedIndex++] );
}
while ( actualIndex < actualLabels.length )
{
report.nodeDoesNotHaveExpectedLabel( nodeRecord, actualLabels[actualIndex++] );
}
}
private class ExpectedNodeLabelsChecker implements
LabelChainWalker.Validator<RECORD, REPORT>
{
private final NodeRecord nodeRecord;
public ExpectedNodeLabelsChecker( NodeRecord nodeRecord )
{
this.nodeRecord = nodeRecord;
}
@Override
public void onRecordNotInUse( DynamicRecord dynamicRecord, CheckerEngine<RECORD, REPORT> engine )
{
// checked elsewhere
}
@Override
public void onRecordChainCycle( DynamicRecord record, CheckerEngine<RECORD, REPORT> engine )
{
// checked elsewhere
}
@Override
public void onWellFormedChain( long[] labelIds, CheckerEngine<RECORD, REPORT> engine, RecordAccess records )
{
validateLabelIds( nodeRecord, labelIds, engine.report() );
}
}
}