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- /*
- * Copyright (C) 2011, Google Inc.
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- package org.eclipse.jgit.storage.dht;
-
- import java.text.MessageFormat;
- import java.util.concurrent.TimeUnit;
- import java.util.regex.Matcher;
- import java.util.regex.Pattern;
-
- import org.eclipse.jgit.lib.Config;
- import org.eclipse.jgit.util.StringUtils;
-
- /** Length of time to wait for an operation before giving up. */
- public class Timeout {
- /**
- * Construct a new timeout, expressed in milliseconds.
- *
- * @param millis
- * number of milliseconds to wait.
- * @return the timeout.
- */
- public static Timeout milliseconds(int millis) {
- return new Timeout(millis, TimeUnit.MILLISECONDS);
- }
-
- /**
- * Construct a new timeout, expressed in seconds.
- *
- * @param sec
- * number of seconds to wait.
- * @return the timeout.
- */
- public static Timeout seconds(int sec) {
- return new Timeout(sec, TimeUnit.SECONDS);
- }
-
- /**
- * Construct a new timeout, expressed in (possibly fractional) seconds.
- *
- * @param sec
- * number of seconds to wait.
- * @return the timeout.
- */
- public static Timeout seconds(double sec) {
- return new Timeout((long) (sec * 1000), TimeUnit.MILLISECONDS);
- }
-
- /**
- * Obtain a timeout from the configuration.
- *
- * @param cfg
- * configuration to read.
- * @param section
- * section key to read.
- * @param subsection
- * subsection to read, may be null.
- * @param name
- * variable to read.
- * @param defaultValue
- * default to return if no timeout is specified in the
- * configuration.
- * @return the configured timeout.
- */
- public static Timeout getTimeout(Config cfg, String section,
- String subsection, String name, Timeout defaultValue) {
- String valStr = cfg.getString(section, subsection, name);
- if (valStr == null)
- return defaultValue;
-
- valStr = valStr.trim();
- if (valStr.length() == 0)
- return defaultValue;
-
- Matcher m = matcher("^([1-9][0-9]*(?:\\.[0-9]*)?)\\s*(.*)$", valStr);
- if (!m.matches())
- throw notTimeUnit(section, subsection, name, valStr);
-
- String digits = m.group(1);
- String unitName = m.group(2).trim();
-
- long multiplier;
- TimeUnit unit;
- if ("".equals(unitName)) {
- multiplier = 1;
- unit = TimeUnit.MILLISECONDS;
-
- } else if (anyOf(unitName, "ms", "millisecond", "milliseconds")) {
- multiplier = 1;
- unit = TimeUnit.MILLISECONDS;
-
- } else if (anyOf(unitName, "s", "sec", "second", "seconds")) {
- multiplier = 1;
- unit = TimeUnit.SECONDS;
-
- } else if (anyOf(unitName, "m", "min", "minute", "minutes")) {
- multiplier = 60;
- unit = TimeUnit.SECONDS;
-
- } else if (anyOf(unitName, "h", "hr", "hour", "hours")) {
- multiplier = 3600;
- unit = TimeUnit.SECONDS;
-
- } else
- throw notTimeUnit(section, subsection, name, valStr);
-
- if (digits.indexOf('.') == -1) {
- try {
- return new Timeout(multiplier * Long.parseLong(digits), unit);
- } catch (NumberFormatException nfe) {
- throw notTimeUnit(section, subsection, name, valStr);
- }
- } else {
- double inputTime;
- try {
- inputTime = multiplier * Double.parseDouble(digits);
- } catch (NumberFormatException nfe) {
- throw notTimeUnit(section, subsection, name, valStr);
- }
-
- if (unit == TimeUnit.MILLISECONDS) {
- TimeUnit newUnit = TimeUnit.NANOSECONDS;
- long t = (long) (inputTime * newUnit.convert(1, unit));
- return new Timeout(t, newUnit);
-
- } else if (unit == TimeUnit.SECONDS && multiplier == 1) {
- TimeUnit newUnit = TimeUnit.MILLISECONDS;
- long t = (long) (inputTime * newUnit.convert(1, unit));
- return new Timeout(t, newUnit);
-
- } else {
- return new Timeout((long) inputTime, unit);
- }
- }
- }
-
- private static Matcher matcher(String pattern, String valStr) {
- return Pattern.compile(pattern).matcher(valStr);
- }
-
- private static boolean anyOf(String a, String... cases) {
- for (String b : cases) {
- if (StringUtils.equalsIgnoreCase(a, b))
- return true;
- }
- return false;
- }
-
- private static IllegalArgumentException notTimeUnit(String section,
- String subsection, String name, String valueString) {
- String key = section
- + (subsection != null ? "." + subsection : "")
- + "." + name;
- return new IllegalArgumentException(MessageFormat.format(
- DhtText.get().notTimeUnit, key, valueString));
- }
-
- private final long time;
-
- private final TimeUnit unit;
-
- /**
- * Construct a new timeout.
- *
- * @param time
- * how long to wait.
- * @param unit
- * the unit that {@code time} was expressed in.
- */
- public Timeout(long time, TimeUnit unit) {
- this.time = time;
- this.unit = unit;
- }
-
- /** @return how long to wait, expressed as {@link #getUnit()}s. */
- public long getTime() {
- return time;
- }
-
- /** @return the unit of measure for {@link #getTime()}. */
- public TimeUnit getUnit() {
- return unit;
- }
-
- @Override
- public int hashCode() {
- return (int) time;
- }
-
- @Override
- public boolean equals(Object other) {
- if (other instanceof Timeout)
- return getTime() == ((Timeout) other).getTime()
- && getUnit().equals(((Timeout) other).getUnit());
- return false;
- }
-
- @Override
- public String toString() {
- return getTime() + " " + getUnit();
- }
- }
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