| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.apache.cassandra.simulator.utils; |
| |
| import java.util.Optional; |
| import java.util.concurrent.TimeUnit; |
| |
| import com.google.common.base.Preconditions; |
| |
| import org.apache.cassandra.simulator.RandomSource; |
| |
| public class IntRange |
| { |
| public final int min; |
| public final int max; |
| |
| public IntRange(int min, int max) |
| { |
| this.min = min; |
| this.max = max; |
| } |
| |
| public IntRange(long min, long max) |
| { |
| Preconditions.checkArgument(min < Integer.MAX_VALUE); |
| Preconditions.checkArgument(max <= Integer.MAX_VALUE); |
| this.min = (int)min; |
| this.max = (int)max; |
| } |
| |
| public IntRange(long min, long max, TimeUnit from, TimeUnit to) |
| { |
| this(to.convert(min,from), to.convert(max, from)); |
| } |
| |
| public int select(RandomSource random) |
| { |
| if (min == max) return min; |
| return random.uniform(min, 1 + max); |
| } |
| |
| public int select(RandomSource random, int minlb, int maxub) |
| { |
| int min = Math.max(this.min, minlb); |
| int max = Math.min(this.max, maxub); |
| if (min >= max) return min; |
| return random.uniform(min, 1 + max); |
| } |
| |
| public static Optional<IntRange> parseRange(Optional<String> chance) |
| { |
| return chance.map(s -> new IntRange(Integer.parseInt(s.replaceFirst("\\.\\.+[0-9]+", "")), |
| Integer.parseInt(s.replaceFirst("[0-9]+\\.\\.+", "")))); |
| } |
| } |