[cups] empty page_log file

[Mike Sweet]

The total values are computed from the printers page counters, while the others are generated by the filters.

Sent from my iPhone

> On Jun 17, 2016, at 10:22 AM, Alex Korobkin <korobkin+cups at gmail.com> wrote:
> 
> Btw, I'm curious why CUPS sometimes puts total number of pages into the
> log, but not every time.
> 
> I mean, sometimes it is
> printer1 userA job# time 1 1 ..
> printer1 userA job# time 2 1 ..
> printer1 userA job# time 3 1 ..
> 
> And sometimes it is
> printer1 userB job# time 1 1 ..
> printer1 userB job# time 2 1 ..
> printer1 userB job# time total 2 ..
> 
> What makes it omit writing total for certain jobs?
> 
> On Fri, Jun 10, 2016 at 1:37 PM, Brian Potkin <claremont102 at gmail.com>
> wrote:
> 
>> On Fri 10 Jun 2016 at 16:56:22 +0200, Helge Blischke wrote:
>> 
>>>> Am 10.06.2016 um 14:40 schrieb Brian Potkin <claremont102 at gmail.com>:
>>>> 
>>>> cups-filter 1.9.0 introduces page logging for the pdftopdf filter. It
>>>> will do page logging on behalf of printer drivers such as hpps which
>>>> (at present) do not do it themselves.
>>> 
>>> There is a directive PageLogFormat for use in cupsd.conf. It uses a
>>> template defining the desired format for the page_log entries (see the
>>> online help for details.
>>> 
>>> If this keyword is *not* present, the default format is used.  But, if
>>> the keyword is used without an argument, this means that *no* page log
>>> entries are written, and an empty page_log file is created.
>> 
>> Indeed, yes. PageLogFormat has to be non-empty or absent from cupsd.conf
>> for pdftopdf to do page logging. It will do it when it is the last
>> filter before the job is sent to the printer, something it doesn't do at
>> present.
>> 
>> When it isn't the final filter it checks what the last filter in the
>> filtering chain is. If it gstopxl, foomatic-rip or hpps it logs to the
>> page_log. Otherwise, it lets the last filter do its own thing.
>> 
>> Regards,
>> 
>> Brian.
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>> https://www.cups.org/mailman/listinfo/cups
> 
> 
> 
> -- 
> -Alex
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