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/*******************************************************************************
* Copyright (c) quickfixengine.org All rights reserved.
*
* This file is part of the QuickFIX FIX Engine
*
* This file may be distributed under the terms of the quickfixengine.org
* license as defined by quickfixengine.org and appearing in the file
* LICENSE included in the packaging of this file.
*
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING
* THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE.
*
* See http://www.quickfixengine.org/LICENSE for licensing information.
*
* Contact [email protected] if any conditions of this licensing
* are not clear to you.
******************************************************************************/
package quickfix;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;
/**
* A wrapper for the system time source, used primarily for unit testing.
*/
public class SystemTime {
public static final TimeZone UTC_TIMEZONE = TimeZone.getTimeZone("UTC");
private static final SystemTimeSource DEFAULT_TIME_SOURCE = new SystemTimeSource() {
public long getTime() {
return System.currentTimeMillis();
}
};
private static volatile SystemTimeSource systemTimeSource = DEFAULT_TIME_SOURCE;
public static long currentTimeMillis() {
return systemTimeSource.getTime();
}
public static Date getDate() {
return new Date(currentTimeMillis());
}
public static void setTimeSource(SystemTimeSource systemTimeSource) {
SystemTime.systemTimeSource = systemTimeSource != null ? systemTimeSource
: DEFAULT_TIME_SOURCE;
}
public static Calendar getUtcCalendar() {
Calendar c = Calendar.getInstance(SystemTime.UTC_TIMEZONE);
c.setTimeInMillis(currentTimeMillis());
return c;
}
public static Calendar getUtcCalendar(Date date) {
Calendar c = getUtcCalendar();
c.setTime(date);
return c;
}
public static Calendar getUtcCalendar(long time) {
Calendar c = getUtcCalendar();
c.setTimeInMillis(time);
return c;
}
}