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/*
* Copyright 2021 TiKV Project Authors.
*
* 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.tikv.common;
import com.google.common.collect.ImmutableMap;
import java.util.Locale;
import java.util.Properties;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.TimeUnit;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Utils {
// org.apache.spark.network.util.JavaUtils
private static final ImmutableMap<String, TimeUnit> timeSuffixes =
ImmutableMap.<String, TimeUnit>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 ConcurrentHashMap<String, String> getSystemProperties() {
ConcurrentHashMap<String, String> map = new ConcurrentHashMap<>();
System.getProperties()
.stringPropertyNames()
.forEach(key -> map.put(key, System.getProperty(key)));
return map;
}
public static void setSystemProperties(ConcurrentHashMap<String, String> settings) {
Properties prop = new Properties();
settings.forEach(prop::setProperty);
System.setProperties(prop);
}
// org.apache.spark.network.util.JavaUtils
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 timeStringAsMs(String str) {
return timeStringAs(str, TimeUnit.MILLISECONDS);
}
public static long timeStringAsSec(String str) {
return timeStringAs(str, TimeUnit.SECONDS);
}
}