2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.openecomp.sdc.be.components.utils;
23 import org.apache.tinkerpop.shaded.minlog.Log;
25 import javax.validation.constraints.NotNull;
26 import java.security.SecureRandom;
27 import java.util.List;
28 import java.util.regex.Matcher;
29 import java.util.regex.Pattern;
33 private static final Pattern COUNTER_PATTERN = Pattern.compile("\\d+$");
34 private static final SecureRandom random = new SecureRandom();
39 public static int getNextCounter(@NotNull List<String> existingValues) {
40 if (existingValues.isEmpty()) {
43 int maxCurrentCounter = 0;
45 maxCurrentCounter = existingValues.stream()
46 .map(COUNTER_PATTERN::matcher)
47 .filter(Matcher::find)
48 .map(matcher -> matcher.group(0))
49 .mapToInt(Integer::parseInt)
54 Log.warn("Failed in retrieivng counter from existing value: ", e);
55 maxCurrentCounter = random.nextInt(100) + 50;
57 return ++maxCurrentCounter;