Re: Custom timestamp format in logs

On Mon, Dec 15, 2014 at 1:36 AM, Magnus Hagander  wrote:
> On Sat, Dec 13, 2014 at 3:50 PM, Michael Paquier 
> wrote:
>>
>> Hi all,
>>
>> This week, we heard about a user willing to use a custom timestamp
>> format across a set of services to improve the debugability of the
>> whole set, Postgres being one of them. Unfortunately datestyle does
>> not take into account the logs. Would it be worth adding a new GUC
>> able to control the timestamp format in the logs?
>>
>> We could still redirect the logs with syslog and have a custom
>> timestamp format there, but in the case of this particular user syslog
>> was a no-go. Looking at the code, timestamp format is now hardcoded in
>> setup_formatted_log_time and setup_formatted_start_time when calling
>> pg_strftime @ elog.c, so it doesn't seem to be much complicated to do.
>>
>> Opinions? This thread is here for that.
>
>
> A separate GUC seems kind of weird.
Check.

> Wouldn't it be better with something like %(format)t or such in the log_line_prefix itself in that case?
> That could also be expanded to other parameters, should we need them?
Possible. I am not sure if we will be able to have a new parameter in
log_line_prefix as modulable as timestamps for formatting though.
-- 
Michael