yifan-c commented on code in PR #81:
URL: https://github.com/apache/cassandra-sidecar/pull/81#discussion_r1468199863
##########
common/src/main/java/org/apache/cassandra/sidecar/common/utils/TimeUtils.java:
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@@ -0,0 +1,36 @@
+package org.apache.cassandra.sidecar.common.utils;
+
+import java.time.Duration;
+import java.util.concurrent.ThreadLocalRandom;
+
+/**
+ * Utility class for manipulating dates, times, and durations
+ */
+public final class TimeUtils {
+ /**
+ * Private constructor that prevents unnecessary instantiation
+ *
+ * @throws IllegalStateException when called
+ */
+ private TimeUtils()
+ {
+ throw new IllegalStateException(getClass() + " is a static utility
class and shall not be instantiated");
+ }
+
+ /**
+ * Returns a random duration with millisecond precision that is uniformly
distributed between two provided durations
+ *
+ * @param minimum minimum possible duration, inclusive
+ * @param maximum maximum possible duration, inclusive
+ *
+ * @return random duration uniformly distributed between two provided
durations, with millisecond precision
+ *
+ * @throws IllegalArgumentException if minimum duration is greater than
maximum duration
+ */
+ public static Duration randomDuration(Duration minimum, Duration maximum)
+ {
+ Preconditions.checkArgument(minimum.compareTo(maximum) <= 0,
+ "Minimum duration must be less or equal to
maximum duration");
+ return
Duration.ofMillis(ThreadLocalRandom.current().nextLong(minimum.toMillis(),
maximum.toMillis() + 1L));
Review Comment:
ok.
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