[Koha] Z39.50 - internal server error

[Radek Šiman]

Hi Jonathan,

I think it's the latest version available: 16.05.04.001. The local 
changes are focused on authorities searching as I think, but I'm not 
absolutely sure (isn't my work). It's just my opinion that about the 
local changes, so we didn't try to run without it - in addition it's a 
bit difficult to turn it off on production systems. I would appreciate 
any information regarding plack, which might be missed during our 
development process. Is there any reason why "undefined subroutine" 
error raises because of plack? PLease remember, the restart always fixes 
the problem as well as prefixing the procedure name. But the question 
is: WHY?

Cheers,
Radek

Dne 14.11.16 v 12:40 Jonathan Druart napsal(a):
> Hi Radek,
>
> Which version of Koha are you running on? What are you local changes? 
> Did you try without?
>
> Cheers,
> Jonathan
>
> On Mon, 14 Nov 2016 at 08:49 <radek.siman at centrum.cz 
> <mailto:radek.siman at centrum.cz>> wrote:
>
>     Hi,
>
>      sometimes we are facing very annoying problem concerning Z39.50
>     searching, bacause all attempt to search records fail with a
>     "white page of death" saying only "Internal server error". It is
>     somehow connected to plack, but we cannot find a good solution.
>
>      Symptoms:
>     # tail plack-error.log -n 5
>     Undefined subroutine &C4::Breeding::GetZ3950BatchId called at
>     /usr/share/koha/lib/C4/Breeding.pm line 279.
>     Undefined subroutine &C4::Breeding::GetZ3950BatchId called at
>     /usr/share/koha/lib/C4/Breeding.pm line 279.
>     Undefined subroutine &C4::Breeding::GetZ3950BatchId called at
>     /usr/share/koha/lib/C4/Breeding.pm line 279.
>     Undefined subroutine &C4::Breeding::GetZ3950BatchId called at
>     /usr/share/koha/lib/C4/Breeding.pm line 279.
>     Undefined subroutine &C4::Breeding::GetZ3950BatchId called at
>     /usr/share/koha/lib/C4/Breeding.pm line 279.
>     Solution A:
>     # koha-plack --restart
>     When we restart the plack service, then the searching starts to
>     work again for an unpredictable period of time (often several
>     days, sometimes week or two).
>
>      Solution B:
>     We add a "C4::ImportBatch::" prefix to C4/Breeding.pm at these two
>     lines:
>     my $batch_id = GetZ3950BatchId($servhref->{servername});
>     my $breedingid = AddBiblioToBatch($batch_id, $seq, $marcrecord,
>     'UTF-8', 0, 0);
>     This solution works well except the fact, that prefixing is not
>     probably the best idea because the procedures SHOULD be already
>     imported. In fact, they aren't. Sometimes.
>
>      We think it could be caused by our local changes of code. We are
>     not happy with it, but is it possible that the local changes of
>     code don't work well with plack module? What should be kept in
>     mind to avoid (probably?) incorrect imports with "use" command?
>
>     Thanks a lot!
>     Radek
>
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