[arch-dev-public] New /arch/db-* scripts

James Rayner iphitus at gmail.com
Sun Jul 8 09:16:08 EDT 2007

On Sun, July 8, 2007 22:10, James Rayner wrote:
> On Sun, July 8, 2007 19:39, Thomas Bächler wrote:
>> I started writing new database scripts to replace the old
>> db-*/updatesync-many/pkgdb2 scripts. The reason are support for the new
>> pacman 3 naming scheme and fixing some design issues.
>> The old scripts use PKGBUILDs a lot for their operation and don't check
>> the package file for consistency with the PKGBUILD (only the filename).
>> They also move every file from the staging dir, regardless of whether
>> the package will be added in any repository. And they recreate much of
>> the functionality from updatesync, sort of reinventing the wheel.
>> My new draft has a cleaner design, but some new problems appear. It
>> performs the following steps:
>> 1) Check every file in the staging/add dir using a small libalpm-based
>> tool and obtain the pkgname, pkgver, pkgrel and architecture. Compare
>> the arch specified in the commandline with the arch from the package
>> (this step is missing in the old scripts). Find the PKGBUILD and compare
>> pkgname, pkgver and pkgrel with the values from the package. If all
>> checks are okay, add the package to a list. If additionally, a force
>> flag is set in the PKGBUILD, add it to a "force-list".
>> 2) Check every file in the staging/del dir and obtain its pkgname. Add
>> this package to a delete list.
>> 3) Lock the database
>> 4) Move all packages and force-packages to the ftp dir, add them with
>> repo-add.
>> 5) Pass the package files to a pkgdb2-like tool to add them to the web
>> interface.
>> 6) Delete all package from the delete-list with repo-remove.
>> 7) Pass the package names to a pkgdb2-like tool to remove them from the
>> web interface.
>> 8) Release the database lock.
>> The problems I run into are these:
>> a) In step 4) I can't determinte the filename of the old package and
>> remove it from the ftp. I could scan for certain filename schemes, but
>> take into account that the package filename could be anything now, the
>> script doesn't care. We could however rely on our current filename
>> scheme to find/remove the dupes (who would go through the trouble to
>> rename his package to sth like wrongname-notapackage.zip.bz8 anyway?).
>> b) The same thing counts for step 6). But we mv our packages to the
>> staging/del anyway so the script won't have to remove them from the ftp.
>> c) This is the biggest problem currently. In step 5), due to the new
>> script design, I don't have any data from the PKGBUILD any more and
>> don't want to go find it again. That means I only use data from the
>> package file itself to add it to the mysql db. The package file lacks
>> the "package category" and "source" which are in the web interface. I
>> could only solve this by either removing this data from the web
>> interface or adding it to the package file.
> IIRC, you also need the PKGBUILD for force=y. That might have been fixed
> in pacman3.

hrm. ignore me, was in a hurry, didnt read.

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