quickfix.field.converter.UtcTimestampConverter Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of quickfixj-core Show documentation
Show all versions of quickfixj-core Show documentation
The core QuickFIX/J engine
/** *****************************************************************************
* 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.field.converter;
import quickfix.FieldConvertError;
import quickfix.SystemTime;
import java.text.DateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.concurrent.ConcurrentHashMap;
/**
* Convert between a timestamp and a String. A timestamp includes both a date
* and a time.
*/
public class UtcTimestampConverter extends AbstractDateTimeConverter {
static final int LENGTH_INCL_SECONDS = 17;
static final int LENGTH_INCL_MILLIS = 21;
static final int LENGTH_INCL_MICROS = 24;
static final int LENGTH_INCL_NANOS = 27;
static final int LENGTH_INCL_PICOS = 30;
private static final ThreadLocal UTC_TIMESTAMP_CONVERTER = new ThreadLocal<>();
private final DateFormat utcTimestampFormat = createDateFormat("yyyyMMdd-HH:mm:ss");
private final DateFormat utcTimestampFormatMillis = createDateFormat("yyyyMMdd-HH:mm:ss.SSS");
private static final ConcurrentHashMap DATE_CACHE = new ConcurrentHashMap<>();
/**
* Convert a timestamp (represented as a Date) to a String.
*
* @param d the date to convert
* @param includeMilliseconds controls whether milliseconds are included in
* the result
* @return the formatted timestamp
*/
public static String convert(Date d, boolean includeMilliseconds) {
return getFormatter(includeMilliseconds).format(d);
}
private static DateFormat getFormatter(boolean includeMillis) {
UtcTimestampConverter converter = UTC_TIMESTAMP_CONVERTER.get();
if (converter == null) {
converter = new UtcTimestampConverter();
UTC_TIMESTAMP_CONVERTER.set(converter);
}
return includeMillis ? converter.utcTimestampFormatMillis : converter.utcTimestampFormat;
}
//
// Performance optimization: the calendar for the start of the day is cached.
// The time is converted to millis and then added to the millis specified by
// the base calendar.
//
/**
* Convert a timestamp string into a Date.
*
* @param value the timestamp String
* @return the parsed timestamp
* @exception FieldConvertError raised if timestamp is an incorrect format.
*/
public static Date convert(String value) throws FieldConvertError {
verifyFormat(value);
long timeOffset = (parseLong(value.substring(9, 11)) * 3600000L)
+ (parseLong(value.substring(12, 14)) * 60000L)
+ (parseLong(value.substring(15, LENGTH_INCL_SECONDS)) * 1000L);
if (value.length() == LENGTH_INCL_MILLIS || value.length() == LENGTH_INCL_MICROS || value.length() == LENGTH_INCL_NANOS || value.length() == LENGTH_INCL_PICOS) {
// accept up to picosenconds but parse only up to milliseconds
timeOffset += parseLong(value.substring(18, LENGTH_INCL_MILLIS));
}
return new Date(getMillisForDay(value) + timeOffset);
}
private static Long getMillisForDay(String value) {
String dateString = value.substring(0, 8);
Long millis = DATE_CACHE.get(dateString);
if (millis == null) {
Calendar c = new GregorianCalendar(1970, 0, 1, 0, 0, 0);
c.setTimeZone(SystemTime.UTC_TIMEZONE);
int year = Integer.parseInt(value.substring(0, 4));
int month = Integer.parseInt(value.substring(4, 6));
int day = Integer.parseInt(value.substring(6, 8));
c.set(year, month - 1, day);
millis = c.getTimeInMillis();
DATE_CACHE.put(dateString, c.getTimeInMillis());
}
return millis;
}
private static void verifyFormat(String value) throws FieldConvertError {
String type = "timestamp";
if (value.length() != LENGTH_INCL_SECONDS && value.length() != LENGTH_INCL_MILLIS && value.length() != LENGTH_INCL_MICROS && value.length() != LENGTH_INCL_NANOS && value.length() != LENGTH_INCL_PICOS) {
throwFieldConvertError(value, type);
}
assertDigitSequence(value, 0, 8, type);
assertSeparator(value, 8, '-', type);
assertDigitSequence(value, 9, 11, type);
assertSeparator(value, 11, ':', type);
assertDigitSequence(value, 12, 14, type);
assertSeparator(value, 14, ':', type);
assertDigitSequence(value, 15, LENGTH_INCL_SECONDS, type);
if (value.length() == LENGTH_INCL_MILLIS) {
assertSeparator(value, LENGTH_INCL_SECONDS, '.', type);
assertDigitSequence(value, 18, LENGTH_INCL_MILLIS, type);
} else if (value.length() == LENGTH_INCL_MICROS) {
assertSeparator(value, LENGTH_INCL_SECONDS, '.', type);
assertDigitSequence(value, 18, LENGTH_INCL_MICROS, type);
} else if (value.length() == LENGTH_INCL_NANOS) {
assertSeparator(value, LENGTH_INCL_SECONDS, '.', type);
assertDigitSequence(value, 18, LENGTH_INCL_NANOS, type);
} else if (value.length() == LENGTH_INCL_PICOS) {
assertSeparator(value, LENGTH_INCL_SECONDS, '.', type);
assertDigitSequence(value, 18, LENGTH_INCL_PICOS, type);
} else if (value.length() != LENGTH_INCL_SECONDS) {
throwFieldConvertError(value, type);
}
}
}