io.confluent.connect.storage.util.DateTimeUtils.java Source code

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Here is the source code for io.confluent.connect.storage.util.DateTimeUtils.java

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/*
 * Copyright 2018 Confluent Inc.
 *
 * Licensed under the Confluent Community License (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.confluent.io/confluent-community-license
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OF ANY KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations under the License.
 */

package io.confluent.connect.storage.util;

import org.joda.time.DateTimeZone;

import java.util.concurrent.TimeUnit;

public class DateTimeUtils {

    private static final long DAY_IN_MS = TimeUnit.DAYS.toMillis(1);

    /**
     * Calculates next period of periodMs after currentTimeMs
     * starting from midnight in given timeZone.
     * If the next period is in next day then 12am of next day
     * will be returned
     *
     * @param currentTimeMs time to calculate at
     * @param periodMs period in ms
     * @param timeZone timezone to get midnight time
     * @return timestamp in ms
     */
    public static long getNextTimeAdjustedByDay(long currentTimeMs, long periodMs, DateTimeZone timeZone) {
        long startOfDay = timeZone
                .convertLocalToUTC(timeZone.convertUTCToLocal(currentTimeMs) / DAY_IN_MS * DAY_IN_MS, true);
        long nextPeriodOffset = ((currentTimeMs - startOfDay) / periodMs + 1) * periodMs;
        long offset = Math.min(nextPeriodOffset, DAY_IN_MS);
        return startOfDay + offset;
    }
}