Util.java

/*
 * Licensed to the Ted Dunning under one or more contributor license
 * agreements.  See the NOTICE file that may be
 * distributed with this work for additional information
 * regarding copyright ownership.  Ted Dunning 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 com.mapr.synth.drive;

import com.fasterxml.jackson.databind.JsonNode;

import java.util.Random;

/**
 * Handy functions
 */
public class Util {
    static double toDegrees(JsonNode h, String fieldName) {
        return h.get(fieldName).asDouble() * Math.PI / 180;
    }

    public static long evenHour(double t) {
        return 3600 * ((long) t / 3600);
    }

    static double nextExponentialTime(Random rand, double rate) {
        return -Math.log(1 - rand.nextDouble()) / rate;
    }

}