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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.sdc.be.components.utils;
import java.security.SecureRandom;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.validation.constraints.NotNull;
import org.apache.tinkerpop.shaded.minlog.Log;
public class Utils {
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;
}
try {
return 1 + 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);
return random.nextInt(100) + 50;
}
}
}
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