The date-parser() parser has the following options.

flags()

Type: guess-timezone
Default: empty string

guess-timezone: Attempt to guess the timezone of the message if this information is not available in the message. Works when the incoming message stream is close to real time, and the timezone information is missing from the timestamp. For example:

date-parser(flags(guess-timezone));

format()

Synopsis: format(string)
Default:  

Description: Specifies the format how syslog-ng OSE should parse the date. You can use the following format elements:

%% PERCENT
%a day of the week, abbreviated
%A day of the week
%b month abbr
%B month
%c MM/DD/YY HH:MM:SS
%C ctime format: Sat Nov 19 21:05:57 1994
%d numeric day of the month, with leading zeros (eg 01..31)
%e like %d, but a leading zero is replaced by a space (eg 1..31)
%f microseconds, leading 0’s, extra digits are silently discarded
%D MM/DD/YY
%G GPS week number (weeks since January 6, 1980)
%h month, abbreviated
%H hour, 24 hour clock, leading 0’s)
%I hour, 12 hour clock, leading 0’s)
%j day of the year
%k hour
%l hour, 12 hour clock
%L month number, starting with 1
%m month number, starting with 01
%M minute, leading 0’s
%n NEWLINE
%o ornate day of month – “1st”, “2nd”, “25th”, etc.
%p AM or PM
%P am or pm (Yes %p and %P are backwards :)
%q Quarter number, starting with 1
%r time format: 09:05:57 PM
%R time format: 21:05
%s seconds since the Epoch, UCT
%S seconds, leading 0’s
%t TAB
%T time format: 21:05:57
%U week number, Sunday as first day of week
%w day of the week, numerically, Sunday == 0
%W week number, Monday as first day of week
%x date format: 11/19/94
%X time format: 21:05:57
%y year (2 digits)
%Y year (4 digits)
%Z timezone in ascii. eg: PST
%z timezone in format -/+0000

For example, for the date 01/Jan/2016:13:05:05 PST use the following format string: format("%d/%b/%Y:%H:%M:%S %Z")

time-stamp()

Accepted values: stamp | recvd
Default: stamp

Description: Determines if the parsed date values are treated as sent or received date. If you use time-stamp(), syslog-ng OSE adds the parsed date to the S_ macros (corresponding to the sent date). If you use time-zone(recvd), syslog-ng OSE adds the parsed date to the R_ macros (corresponding to the received date).

time-zone()

Type: name of the timezone, or the timezone offset
Default:  

Description: The default timezone for messages read from the source. Applies only if no timezone is specified within the message itself.

The timezone can be specified by using the name, for example, time-zone(“Europe/Budapest”)), or as the timezone offset in +/-HH:MM format, for example, +01:00). On Linux and UNIX platforms, the valid timezone names are listed under the /usr/share/zoneinfo directory.

value()

Type: string
Default:  

This option is only available in syslog-ng OSE 4.0 and later versions.

Description: This option instructs the date-parser() to store the timestamp in a name-value pair specified in value(), instead of editing the timestamp value of the log message.

Updated: