org.usergrid.utils.TimeUtils.java Source code

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Here is the source code for org.usergrid.utils.TimeUtils.java

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/*******************************************************************************
 * Copyright 2012 Apigee Corporation
 * 
 * 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.
 ******************************************************************************/
package org.usergrid.utils;

import com.google.common.base.CharMatcher;
import com.google.common.base.Splitter;

public class TimeUtils {

    public static long millisToMinutes(long millis) {
        return millis / 1000 / 60;
    }

    public static long minutesToMillis(long minutes) {
        return minutes * 60 * 100;
    }

    public static long millisToHours(long millis) {
        return millis / 1000 / 60 / 60;
    }

    public static long hoursToMillis(long hours) {
        return hours * 60 * 60 * 100;
    }

    public static long millisToDays(long millis) {
        return millis / 1000 / 60 / 60 / 24;
    }

    public static long daysToMillis(long days) {
        return days * 24 * 60 * 60 * 100;
    }

    public static long millisToWeeks(long millis) {
        return millis / 1000 / 60 / 60 / 24 / 7;
    }

    public static long weeksToMillis(long weeks) {
        return weeks * 7 * 24 * 60 * 60 * 100;
    }

    /**
     * Jira-style duration parser. Supported duration strings are:
     * <ul>
     *   <li>'S': milliseconds</li>
     *   <li>'s': seconds</li>
     *   <li>'m': minutes</li>
     *   <li>'h': hours</li>
     *   <li>'d': days</li>
     * </ul>
     *
     * Durations can be compound statements in any order as long as they are
     * separated by a ',' (comma). Eg. "1d,14h,3s" to get the millisecond
     * equivalent of one day, fourteen hours and 3 seconds.
     *
     * Numbers with no durations will be treated as raw millisecond values
     *
     * @param durationStr
     * @return the number of milliseconds representing the duration
     */
    public static long millisFromDuration(String durationStr) {
        long total = 0;
        MultiplierToken mt;
        long dur;
        for (String val : Splitter.on(',').trimResults().omitEmptyStrings().split(durationStr)) {
            dur = Long.parseLong(CharMatcher.DIGIT.retainFrom(val));
            mt = MultiplierToken.from(val.charAt(val.length() - 1));
            total += (mt.multiplier * dur);
        }
        return total;
    }

    private enum MultiplierToken {
        MILSEC_TOKEN('S', 1L), SEC_TOKEN('s', 1000L), MIN_TOKEN('m', 60000L), HOUR_TOKEN('h',
                3600000L), DAY_TOKEN('d', 86400000L);

        final char token;
        final long multiplier;

        MultiplierToken(char token, long multiplier) {
            this.token = token;
            this.multiplier = multiplier;
        }

        static MultiplierToken from(char c) {
            switch (c) {
            case 's':
                return SEC_TOKEN;
            case 'm':
                return MIN_TOKEN;
            case 'h':
                return HOUR_TOKEN;
            case 'd':
                return DAY_TOKEN;
            case 'S':
                return MILSEC_TOKEN;
            }
            if (CharMatcher.DIGIT.matches(c)) {
                return MILSEC_TOKEN;
            }
            throw new IllegalArgumentException("Duration token was not on of [S,s,m,h,d] but was " + c);
        }
    }

}