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
|
/*
* Copyright (c) 2016 Cisco and/or its affiliates.
*
* 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 io.fd.honeycomb.v3po.translate.v3po.util;
import static com.google.common.base.Preconditions.checkArgument;
import com.google.common.collect.BiMap;
import com.google.common.collect.HashBiMap;
import javax.annotation.Nonnull;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Naming context keeping a mapping between int index and string name.
* Provides artificial names to unknown indices.
*/
public class NamingContext implements AutoCloseable {
private static final Logger LOG = LoggerFactory.getLogger(NamingContext.class);
private final BiMap<String, Integer> nameMapping = HashBiMap.create();
private final String artificialNamePrefix;
public NamingContext(final String artificialNamePrefix) {
this.artificialNamePrefix = artificialNamePrefix;
}
@Nonnull
public synchronized String getName(final int index) {
if(!nameMapping.inverse().containsKey(index)) {
final String artificialName = getArtificialName(index);
LOG.info("Assigning artificial name: {} for index: {}", artificialName, index);
addName(index, artificialName);
}
return nameMapping.inverse().get(index);
}
public synchronized boolean containsName(final int index) {
return nameMapping.inverse().containsKey(index);
}
public synchronized void addName(final int index, final String name) {
nameMapping.put(name, index);
}
public synchronized int removeName(final String name) {
return nameMapping.remove(name);
}
/**
* Returns index value associated with the given name.
*
* @param name the name whose associated index value is to be returned
* @return integer index value matching supplied name
* @throws IllegalArgumentException if name was not found
*/
public synchronized int getIndex(String name) {
checkArgument(nameMapping.containsKey(name), "Name %s not found. Known names: %s",
name, nameMapping);
return nameMapping.get(name);
}
public synchronized boolean containsIndex(String interfaceName) {
return nameMapping.containsKey(interfaceName);
}
private String getArtificialName(final int index) {
return artificialNamePrefix + index;
}
@Override
public void close() throws Exception {
nameMapping.clear();
}
}
|
