[Koha-bugs] [Bug 8437] Plack and database backup

[bugzilla-daemon at bugs.koha-community.org]

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=8437

--- Comment #9 from Jared Camins-Esakov <jcamins at cpbibliography.com> ---
(In reply to comment #7)
> This patch fixes errors under plack but doesn't work for large backup files.
> 
> The problem is in download_backup which tries to print data back to browser
> in 64K chunks. Under plack, that gets buffered in memory and with backup of
> our production database it dies after a while and returns zero length file.
> 
> Correct way to fix this is to issue redirect under plack in download_backup
> to some plack handled URL so we don't read whole file in memory.

This can't be how exporting large blobs from a database would be handled under
Plack. Do you have any idea how that would work? Maybe we can use the same
technique.

> I don't know how to detect plack if we are running under plack since script
> is inside CGI::Compile, but we could use environment variable to signal that
> we are under plack.
> 
> That would, however, require us to have some kind of koha.psgi in which we
> can implement this in master.

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