Source code
Description: source: package: org.apache.commons.lang3.time, class: DurationUtils

    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017
    018package org.apache.commons.lang3.time;
    019
    020import java.time.Duration;
    021import java.time.Instant;
    022import java.time.temporal.ChronoUnit;
    023import java.time.temporal.Temporal;
    024import java.util.Objects;
    025import java.util.concurrent.TimeUnit;
    026
    027import org.apache.commons.lang3.LongRange;
    028import org.apache.commons.lang3.ObjectUtils;
    029import org.apache.commons.lang3.function.FailableBiConsumer;
    030import org.apache.commons.lang3.function.FailableConsumer;
    031import org.apache.commons.lang3.function.FailableRunnable;
    032import org.apache.commons.lang3.math.NumberUtils;
    033
    034/**
    035 * Utilities for {@link Duration}.
    036 *
    037 * @since 3.12.0
    038 */
    039public class DurationUtils {
    040
    041    /**
    042     * An Integer Range that accepts Longs.
    043     */
    044    static final LongRange LONG_TO_INT_RANGE = LongRange.of(NumberUtils.LONG_INT_MIN_VALUE, NumberUtils.LONG_INT_MAX_VALUE);
    045
    046    /**
    047     * Accepts the function with the duration as a long milliseconds and int nanoseconds.
    048     *
    049     * @param <T> The function exception.
    050     * @param consumer Accepting function.
    051     * @param duration The duration to pick apart.
    052     * @throws T See the function signature.
    053     * @see StopWatch
    054     */
    055    @SuppressWarnings("boxing") // boxing unavoidable
    056    public static <T extends Throwable> void accept(final FailableBiConsumer<Long, Integer, T> consumer, final Duration duration)
    057            throws T {
    058        if (consumer != null && duration != null) {
    059            consumer.accept(duration.toMillis(), getNanosOfMilli(duration));
    060        }
    061    }
    062
    063    /**
    064     * Gets the nanosecond part of a Duration converted to milliseconds.
    065     * <p>
    066     * Handy when calling an API that takes a long of milliseconds and an int of nanoseconds. For example,
    067     * {@link Object#wait(long, int)} and {@link Thread#sleep(long, int)}.
    068     * </p>
    069     * <p>
    070     * Note that is this different from {@link Duration#getNano()} because a duration are seconds and nanoseconds.
    071     * </p>
    072     *
    073     * @param duration The duration to query.
    074     * @return nanoseconds between 0 and 999,999.
    075     * @deprecated Use {@link #getNanosOfMilli(Duration)}.
    076     */
    077    @Deprecated
    078    public static int getNanosOfMiili(final Duration duration) {
    079        return getNanosOfMilli(duration);
    080    }
    081
    082    /**
    083     * Gets the nanosecond part of a Duration converted to milliseconds.
    084     * <p>
    085     * Handy when calling an API that takes a long of milliseconds and an int of nanoseconds. For example,
    086     * {@link Object#wait(long, int)} and {@link Thread#sleep(long, int)}.
    087     * </p>
    088     * <p>
    089     * Note that is this different from {@link Duration#getNano()} because a duration are seconds and nanoseconds.
    090     * </p>
    091     *
    092     * @param duration The duration to query.
    093     * @return nanoseconds between 0 and 999,999.
    094     * @since 3.13.0
    095     */
    096    public static int getNanosOfMilli(final Duration duration) {
    097        return zeroIfNull(duration).getNano() % 1_000_000;
    098    }
    099
    100    /**
    101     * Tests whether the given Duration is positive (&gt;0).
    102     *
    103     * @param duration the value to test
    104     * @return whether the given Duration is positive (&gt;0).
    105     */
    106    public static boolean isPositive(final Duration duration) {
    107        return !duration.isNegative() && !duration.isZero();
    108    }
    109
    110    private static <E extends Throwable> Instant now(final FailableConsumer<Instant, E> nowConsumer) throws E {
    111        final Instant start = Instant.now();
    112        nowConsumer.accept(start);
    113        return start;
    114    }
    115
    116    /**
    117     * Runs the lambda and returns the duration of its execution.
    118     *
    119     * @param <E> The type of exception throw by the lambda.
    120     * @param consumer What to execute.
    121     * @return The Duration of execution.
    122     * @throws E thrown by the lambda.
    123     * @see StopWatch
    124     * @since 3.13.0
    125     */
    126    public static <E extends Throwable> Duration of(final FailableConsumer<Instant, E> consumer) throws E {
    127        return since(now(consumer::accept));
    128    }
    129
    130    /**
    131     * Runs the lambda and returns the duration of its execution.
    132     *
    133     * @param <E> The type of exception throw by the lambda.
    134     * @param runnable What to execute.
    135     * @return The Duration of execution.
    136     * @throws E thrown by the lambda.
    137     * @see StopWatch
    138     * @since 3.13.0
    139     */
    140    public static <E extends Throwable> Duration of(final FailableRunnable<E> runnable) throws E {
    141        return of(start -> runnable.run());
    142    }
    143
    144    /**
    145     * Computes the Duration between a start instant and now.
    146     *
    147     * @param startInclusive the start instant, inclusive, not null.
    148     * @return a {@link Duration}, not null.
    149     * @since 3.13.0
    150     */
    151    public static Duration since(final Temporal startInclusive) {
    152        return Duration.between(startInclusive, Instant.now());
    153    }
    154
    155    /**
    156     * Converts a {@link TimeUnit} to a {@link ChronoUnit}.
    157     *
    158     * @param timeUnit A non-null TimeUnit.
    159     * @return The corresponding ChronoUnit.
    160     */
    161    static ChronoUnit toChronoUnit(final TimeUnit timeUnit) {
    162        // TODO when using Java >= 9: Use TimeUnit.toChronoUnit().
    163        switch (Objects.requireNonNull(timeUnit)) {
    164        case NANOSECONDS:
    165            return ChronoUnit.NANOS;
    166        case MICROSECONDS:
    167            return ChronoUnit.MICROS;
    168        case MILLISECONDS:
    169            return ChronoUnit.MILLIS;
    170        case SECONDS:
    171            return ChronoUnit.SECONDS;
    172        case MINUTES:
    173            return ChronoUnit.MINUTES;
    174        case HOURS:
    175            return ChronoUnit.HOURS;
    176        case DAYS:
    177            return ChronoUnit.DAYS;
    178        default:
    179            throw new IllegalArgumentException(timeUnit.toString());
    180        }
    181    }
    182
    183    /**
    184     * Converts an amount and TimeUnit into a Duration.
    185     *
    186     * @param amount   the amount of the duration, measured in terms of the unit, positive or negative
    187     * @param timeUnit the unit that the duration is measured in, must have an exact duration, not null
    188     * @return a Duration.
    189     */
    190    public static Duration toDuration(final long amount, final TimeUnit timeUnit) {
    191        return Duration.of(amount, toChronoUnit(timeUnit));
    192    }
    193
    194    /**
    195     * Converts a Duration to milliseconds bound to an int (instead of a long).
    196     * <p>
    197     * Handy for low-level APIs that take millisecond timeouts in ints rather than longs.
    198     * </p>
    199     * <ul>
    200     * <li>If the duration milliseconds are greater than {@link Integer#MAX_VALUE}, then return
    201     * {@link Integer#MAX_VALUE}.</li>
    202     * <li>If the duration milliseconds are lesser than {@link Integer#MIN_VALUE}, then return
    203     * {@link Integer#MIN_VALUE}.</li>
    204     * </ul>
    205     *
    206     * @param duration The duration to convert, not null.
    207     * @return int milliseconds.
    208     */
    209    public static int toMillisInt(final Duration duration) {
    210        Objects.requireNonNull(duration, "duration");
    211        // intValue() does not do a narrowing conversion here
    212        return LONG_TO_INT_RANGE.fit(Long.valueOf(duration.toMillis())).intValue();
    213    }
    214
    215    /**
    216     * Returns the given non-null value or {@link Duration#ZERO} if null.
    217     *
    218     * @param duration The duration to test.
    219     * @return The given duration or {@link Duration#ZERO}.
    220     */
    221    public static Duration zeroIfNull(final Duration duration) {
    222        return ObjectUtils.defaultIfNull(duration, Duration.ZERO);
    223    }
    224
    225    /**
    226     * Make private in 4.0.
    227     *
    228     * @deprecated TODO Make private in 4.0.
    229     */
    230    @Deprecated
    231    public DurationUtils() {
    232        // empty
    233    }
    234}