-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
KernelExtensionFailureStrategies.java
117 lines (106 loc) · 4.41 KB
/
KernelExtensionFailureStrategies.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
/*
* Copyright (c) 2002-2018 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.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.kernel.extension;
import java.io.PrintStream;
import org.neo4j.kernel.impl.util.UnsatisfiedDependencyException;
public class KernelExtensionFailureStrategies
{
private KernelExtensionFailureStrategies()
{
}
private static FailedToBuildKernelExtensionException wrap( KernelExtensionFactory kernelExtensionFactory, UnsatisfiedDependencyException e )
{
return new FailedToBuildKernelExtensionException(
"Failed to build kernel extension " + kernelExtensionFactory + " due to a missing dependency: " + e.getMessage(), e );
}
private static FailedToBuildKernelExtensionException wrap( KernelExtensionFactory kernelExtensionFactory, Throwable e )
{
StringBuilder message = new StringBuilder( "Failed to build kernel extension " ).append( kernelExtensionFactory );
if ( e instanceof LinkageError || e instanceof ReflectiveOperationException )
{
if ( e instanceof LinkageError )
{
message.append( " because it is compiled with a reference to a class, method, or field, that is not in the class path: " );
}
else
{
message.append( " because it a reflective access to a class, method, or field, that is not in the class path: " );
}
message.append( '\'' ).append( e.getMessage() ).append( '\'' );
message.append( ". The most common cause of this problem, is that Neo4j has been upgraded without also upgrading all" );
message.append( "installed extensions, such as APOC. " );
message.append( "Make sure that all of your extensions are build against your specific version of Neo4j." );
}
else
{
message.append( " because of an unanticipated error: '" ).append( e.getMessage() ).append( "'." );
}
return new FailedToBuildKernelExtensionException( message.toString(), e );
}
public static KernelExtensionFailureStrategy fail()
{
return new KernelExtensionFailureStrategy()
{
@Override
public void handle( KernelExtensionFactory kernelExtensionFactory, UnsatisfiedDependencyException e )
{
throw wrap( kernelExtensionFactory, e );
}
@Override
public void handle( KernelExtensionFactory kernelExtensionFactory, Throwable e )
{
throw wrap( kernelExtensionFactory, e );
}
};
}
public static KernelExtensionFailureStrategy ignore()
{
return new KernelExtensionFailureStrategy()
{
@Override
public void handle( KernelExtensionFactory kernelExtensionFactory, UnsatisfiedDependencyException e )
{
// Just ignore.
}
@Override
public void handle( KernelExtensionFactory kernelExtensionFactory, Throwable e )
{
// Just ignore.
}
};
}
// Perhaps not used, but very useful for debugging kernel extension loading problems
public static KernelExtensionFailureStrategy print( PrintStream out )
{
return new KernelExtensionFailureStrategy()
{
@Override
public void handle( KernelExtensionFactory kernelExtensionFactory, UnsatisfiedDependencyException e )
{
wrap( kernelExtensionFactory, e ).printStackTrace( out );
}
@Override
public void handle( KernelExtensionFactory kernelExtensionFactory, Throwable e )
{
wrap( kernelExtensionFactory, e ).printStackTrace( out );
}
};
}
}