-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
ConsistencyCheckerTest.java
136 lines (127 loc) · 5.75 KB
/
ConsistencyCheckerTest.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
/*
* 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.index.internal.gbptree;
import org.apache.commons.lang3.mutable.MutableLong;
import org.junit.Test;
import org.neo4j.collection.primitive.PrimitiveLongCollections;
import org.neo4j.io.pagecache.CursorException;
import org.neo4j.io.pagecache.PageCursor;
import static org.hamcrest.CoreMatchers.containsString;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.fail;
import static org.neo4j.index.internal.gbptree.ConsistencyChecker.assertNoCrashOrBrokenPointerInGSPP;
import static org.neo4j.index.internal.gbptree.GenSafePointer.MIN_GENERATION;
import static org.neo4j.index.internal.gbptree.PageCursorUtil.goTo;
public class ConsistencyCheckerTest
{
@Test
public void shouldThrowDescriptiveExceptionOnBrokenGSPP() throws Exception
{
// GIVEN
int pageSize = 256;
PageCursor cursor = new PageAwareByteArrayCursor( pageSize );
Layout<MutableLong,MutableLong> layout = new SimpleLongLayout();
TreeNode<MutableLong,MutableLong> treeNode = new TreeNode<>( pageSize, layout );
long stableGeneration = MIN_GENERATION;
long crashGeneration = stableGeneration + 1;
long unstableGeneration = stableGeneration + 2;
String pointerFieldName = "abc";
long pointer = 123;
cursor.next( 0 );
treeNode.initializeInternal( cursor, stableGeneration, crashGeneration );
treeNode.setNewGen( cursor, pointer, stableGeneration, crashGeneration );
// WHEN
try
{
assertNoCrashOrBrokenPointerInGSPP( cursor, stableGeneration, unstableGeneration,
pointerFieldName, TreeNode.BYTE_POS_NEWGEN, treeNode );
cursor.checkAndClearCursorException();
fail( "Should have failed" );
}
catch ( CursorException e )
{
// THEN
assertThat( e.getMessage(), containsString( pointerFieldName ) );
assertThat( e.getMessage(), containsString( pointerFieldName ) );
assertThat( e.getMessage(), containsString( "state=CRASH" ) );
assertThat( e.getMessage(), containsString( "state=EMPTY" ) );
assertThat( e.getMessage(), containsString( String.valueOf( pointer ) ) );
}
}
@Test
public void shouldDetectUnusedPages() throws Exception
{
// GIVEN
int pageSize = 256;
Layout<MutableLong,MutableLong> layout = new SimpleLongLayout();
TreeNode<MutableLong,MutableLong> node = new TreeNode<>( pageSize, layout );
long stableGeneration = GenSafePointer.MIN_GENERATION;
long unstableGeneration = stableGeneration + 1;
SimpleIdProvider idProvider = new SimpleIdProvider();
InternalTreeLogic<MutableLong,MutableLong> logic = new InternalTreeLogic<>( idProvider, node, layout );
PageCursor cursor = new PageAwareByteArrayCursor( pageSize );
cursor.next( idProvider.acquireNewId( stableGeneration, unstableGeneration ) );
node.initializeLeaf( cursor, stableGeneration, unstableGeneration );
logic.initialize( cursor );
StructurePropagation<MutableLong> structure = new StructurePropagation<>( layout.newKey(), layout.newKey() );
MutableLong key = layout.newKey();
for ( int g = 0, k = 0; g < 3; g++ )
{
for ( int i = 0; i < 100; i++, k++ )
{
key.setValue( k );
logic.insert( cursor, structure, key, key, ValueMergers.overwrite(),
stableGeneration, unstableGeneration );
if ( structure.hasRightKeyInsert )
{
goTo( cursor, "new root",
idProvider.acquireNewId( stableGeneration, unstableGeneration ) );
node.initializeInternal( cursor, stableGeneration, unstableGeneration );
node.insertKeyAt( cursor, structure.rightKey, 0, 0 );
node.setKeyCount( cursor, 1 );
node.setChildAt( cursor, structure.midChild, 0, stableGeneration, unstableGeneration );
node.setChildAt( cursor, structure.rightChild, 1,
stableGeneration, unstableGeneration );
logic.initialize( cursor );
}
if ( structure.hasMidChildUpdate )
{
logic.initialize( cursor );
}
structure.clear();
}
stableGeneration = unstableGeneration;
unstableGeneration++;
}
// WHEN
ConsistencyChecker<MutableLong> cc =
new ConsistencyChecker<>( node, layout, stableGeneration, unstableGeneration );
try
{
cc.checkSpace( cursor, idProvider.lastId(), PrimitiveLongCollections.emptyIterator() );
fail( "Should have failed" );
}
catch ( RuntimeException e )
{
// THEN good
assertThat( e.getMessage(), containsString( "unused pages" ) );
}
}
}