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
|
/*
* Copyright © 2016-2017 European Support Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.openecomp.sdc.logging.slf4j;
import java.util.EnumMap;
import java.util.Map;
import org.openecomp.sdc.logging.slf4j.SLF4JLoggingServiceProvider.ContextField;
import org.slf4j.MDC;
/**
* Because we don't know which information should be carried over from MDC, and which shouldn't, copy just the keys that
* the logging service uses.
*
* @author evitaliy
* @since 08 Jan 2018
*/
abstract class BaseMDCCopyingWrapper {
private final Map<ContextField, String> context;
BaseMDCCopyingWrapper() {
this.context = fromMdc();
}
final Map<ContextField, String> replace() {
Map<ContextField, String> old = fromMdc();
toMdc(this.context);
return old;
}
final void revert(Map<ContextField, String> old) {
toMdc(old);
}
private Map<ContextField, String> fromMdc() {
Map<ContextField, String> copy = new EnumMap<>(ContextField.class);
for (ContextField k : ContextField.values()) {
String v = MDC.get(k.asKey());
if (v != null) {
copy.put(k, v);
}
}
return copy;
}
private static void toMdc(Map<ContextField, String> context) {
for (ContextField k : ContextField.values()) {
String v = context.get(k);
if (v != null) {
MDC.put(k.asKey(), v);
} else {
MDC.remove(k.asKey());
}
}
}
}
|
