| // Copyright (C) 2013 The Android Open Source Project |
| // |
| // 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 com.google.gerrit.server.util.time; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.gerrit.server.util.git.DelegateSystemReader; |
| import java.time.Instant; |
| import java.util.concurrent.TimeUnit; |
| import java.util.function.LongSupplier; |
| import org.eclipse.jgit.util.SystemReader; |
| |
| /** Static utility methods for dealing with dates and times. */ |
| public class TimeUtil { |
| private static final LongSupplier SYSTEM_CURRENT_MILLIS_SUPPLIER = System::currentTimeMillis; |
| |
| private static volatile LongSupplier currentMillisSupplier = SYSTEM_CURRENT_MILLIS_SUPPLIER; |
| |
| public static long nowMs() { |
| // We should rather use Instant.now(Clock).toEpochMilli() instead but this would require some |
| // changes in our testing code as we wouldn't have clock steps anymore. |
| return currentMillisSupplier.getAsLong(); |
| } |
| |
| public static long nowNanos() { |
| return TimeUnit.NANOSECONDS.convert(TimeUtil.nowMs(), TimeUnit.MILLISECONDS); |
| } |
| |
| public static Instant now() { |
| return Instant.ofEpochMilli(nowMs()); |
| } |
| |
| public static Instant truncateToSecond(Instant t) { |
| return Instant.ofEpochMilli(t.getEpochSecond() * 1000); |
| } |
| |
| @VisibleForTesting |
| public static void setCurrentMillisSupplier(LongSupplier customCurrentMillisSupplier) { |
| currentMillisSupplier = customCurrentMillisSupplier; |
| |
| SystemReader oldSystemReader = SystemReader.getInstance(); |
| if (!(oldSystemReader instanceof GerritSystemReader)) { |
| SystemReader.setInstance(new GerritSystemReader(oldSystemReader)); |
| } |
| } |
| |
| @VisibleForTesting |
| public static void resetCurrentMillisSupplier() { |
| currentMillisSupplier = SYSTEM_CURRENT_MILLIS_SUPPLIER; |
| SystemReader.setInstance(null); |
| } |
| |
| static class GerritSystemReader extends DelegateSystemReader { |
| GerritSystemReader(SystemReader reader) { |
| super(reader); |
| } |
| |
| @Override |
| public long getCurrentTime() { |
| return currentMillisSupplier.getAsLong(); |
| } |
| } |
| |
| private TimeUtil() {} |
| } |