blob: 83f5a5de958c9774f526394fc7934637ad271f81 (
plain)
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
|
package org.openecomp.sdc.be.components.utils;
import org.apache.tinkerpop.shaded.minlog.Log;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.validation.constraints.NotNull;
import java.security.SecureRandom;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Utils {
private static final Logger log = LoggerFactory.getLogger(Utils.class);
private static final Pattern COUNTER_PATTERN = Pattern.compile("\\d+$");
private static final SecureRandom random = new SecureRandom();
private Utils() {}
public static int getNextCounter(@NotNull List<String> existingValues) {
if (existingValues.isEmpty()) {
return 0;
}
int maxCurrentCounter = 0;
try {
maxCurrentCounter = existingValues.stream()
.map(COUNTER_PATTERN::matcher)
.filter(Matcher::find)
.map(matcher -> matcher.group(0))
.mapToInt(Integer::parseInt)
.max()
.orElse(0);
}
catch (Exception e) {
Log.warn("Failed in retrieivng counter from existing value: ", e);
maxCurrentCounter = random.nextInt(100) + 50;
}
return ++maxCurrentCounter;
}
}
|
