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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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 org.apache.kylin.common.util;
import java.time.Instant;
import java.time.LocalDate;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.util.Calendar;
import java.util.Locale;
import java.util.TimeZone;
import java.util.concurrent.TimeUnit;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import com.google.common.collect.ImmutableMap;
/**
*/
public class TimeUtil {
private static long ONE_MINUTE_TS = 60 * 1000L;
private static long ONE_HOUR_TS = 60 * ONE_MINUTE_TS;
private static final ImmutableMap timeSuffixes = ImmutableMap. builder()
.put("us", TimeUnit.MICROSECONDS).put("ms", TimeUnit.MILLISECONDS).put("s", TimeUnit.SECONDS)
.put("m", TimeUnit.MINUTES).put("min", TimeUnit.MINUTES).put("h", TimeUnit.HOURS).put("d", TimeUnit.DAYS)
.build();
public static long getMinuteStart(long ts) {
return ts / ONE_MINUTE_TS * ONE_MINUTE_TS;
}
public static long getHourStart(long ts) {
return ts / ONE_HOUR_TS * ONE_HOUR_TS;
}
public static int getHour(long ts) {
return (int) ((ts - getDayStart(ts)) / ONE_HOUR_TS);
}
public static long getDayStart(long ts) {
ZoneId zoneId = TimeZone.getDefault().toZoneId();
LocalDate localDate = Instant.ofEpochMilli(ts).atZone(zoneId).toLocalDate();
return localDate.atStartOfDay().atZone(zoneId).toInstant().toEpochMilli();
}
public static long getWeekStart(long ts) {
Calendar calendar = Calendar.getInstance(TimeZone.getDefault(), Locale.getDefault());
calendar.setTimeInMillis(getDayStart(ts));
calendar.add(Calendar.DAY_OF_WEEK, calendar.getFirstDayOfWeek() - calendar.get(Calendar.DAY_OF_WEEK));
return calendar.getTimeInMillis();
}
public static long getMonthStart(long ts) {
Calendar calendar = Calendar.getInstance(TimeZone.getDefault(), Locale.getDefault());
calendar.setTimeInMillis(ts);
int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH);
calendar.clear();
calendar.set(year, month, 1);
return calendar.getTimeInMillis();
}
public static long getQuarterStart(long ts) {
Calendar calendar = Calendar.getInstance(TimeZone.getDefault(), Locale.getDefault());
calendar.setTimeInMillis(ts);
int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH);
calendar.clear();
calendar.set(year, month / 3 * 3, 1);
return calendar.getTimeInMillis();
}
public static long getYearStart(long ts) {
Calendar calendar = Calendar.getInstance(TimeZone.getDefault(), Locale.getDefault());
calendar.setTimeInMillis(ts);
int year = calendar.get(Calendar.YEAR);
calendar.clear();
calendar.set(year, 0, 1);
return calendar.getTimeInMillis();
}
public static long timeStringAs(String str, TimeUnit unit) {
String lower = str.toLowerCase(Locale.ROOT).trim();
try {
Matcher m = Pattern.compile("(-?[0-9]+)([a-z]+)?").matcher(lower);
if (!m.matches()) {
throw new NumberFormatException("Failed to parse time string: " + str);
}
long val = Long.parseLong(m.group(1));
String suffix = m.group(2);
// Check for invalid suffixes
if (suffix != null && !timeSuffixes.containsKey(suffix)) {
throw new NumberFormatException("Invalid suffix: \"" + suffix + "\"");
}
// If suffix is valid use that, otherwise none was provided and use the default passed
return unit.convert(val, suffix != null ? timeSuffixes.get(suffix) : unit);
} catch (NumberFormatException e) {
String timeError = "Time must be specified as seconds (s), "
+ "milliseconds (ms), microseconds (us), minutes (m or min), hour (h), or day (d). "
+ "E.g. 50s, 100ms, or 250us.";
throw new NumberFormatException(timeError + "\n" + e.getMessage());
}
}
public static long minusDays(long ts, int days) {
ZoneId zoneId = TimeZone.getDefault().toZoneId();
ZonedDateTime zonedDateTime = Instant.ofEpochMilli(ts).atZone(zoneId);
return zonedDateTime.minusDays(days).toInstant().toEpochMilli();
}
}
