diff options
Diffstat (limited to 'catalog-be/src/main/java/org/openecomp/sdc/be/components/utils/Utils.java')
| -rw-r--r-- | catalog-be/src/main/java/org/openecomp/sdc/be/components/utils/Utils.java | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/catalog-be/src/main/java/org/openecomp/sdc/be/components/utils/Utils.java b/catalog-be/src/main/java/org/openecomp/sdc/be/components/utils/Utils.java new file mode 100644 index 0000000000..83f5a5de95 --- /dev/null +++ b/catalog-be/src/main/java/org/openecomp/sdc/be/components/utils/Utils.java @@ -0,0 +1,42 @@ +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; + } +}
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