Mailinglist Archive: opensuse-buildservice (262 mails)

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Re: [opensuse-buildservice] Re: Notifications (was: Re: [opensuse-packaging] New packages for factory)
  • From: Adrian Schröter <adrian@xxxxxxx>
  • Date: Tue, 11 Aug 2009 15:03:36 +0200
  • Message-id: <200908111503.36176.adrian@xxxxxxx>
Am Dienstag, 11. August 2009 12:45:57 schrieb Johannes Meixner:
Hello,

On Aug 11 10:50 Adrian Schröter wrote (shortened):
Am Dienstag, 11. August 2009 10:34:58 schrieb Johannes Meixner:
One needs transaction semantics when working on packages:
1. Begin of transaction
2. Change it
3. End of transaction

This isn't there by intention. Basically no scm implements it because it
blocks other people and slow downs development. Usually first submitter
wins and followers need to adapt.

I can not imagine any system right now, which solves social problems, in
the end people need always to talk to each other if they work on same
code.

A weak synchronization point preferably with a kind of weak locking
before someone starts to change it (so that all others who also
work on it are at least informed) and a strong synchronization point
preferably with a kind of three way merge when changes are committed.

I do not understand how a weak synchronization point before
blocks other people and slow downs development.

The problem with the current build service is not the
optimistic concurrency control policy at commit time,
the problem is that nobody knows about others who may also work
on a package until it is too late to start collaborating.

Remember Coolo's mass-changes of packages.
All others notice what Coolo did only when it was already done.
If there was a "begin of transaction" the others could get
at least informed before.

I fail to see how a package locking would help here. It would use by the
script, so it would briefly lock the package and than submit it. Not much time
in between.

Therefore we have the source links and devel projects, one get the changes
(either automatically or by manually solving via repairlink).

But as you wrote - and as other threads here show - mutual information
is not really within the scope of the build service but is left to the
users of the build service to do it somehow on their own beside the
build service via manual mails.

We can discuss to have something like a "I am currently working on this
package" flag, but I strongly mind to block something.

In short:
The build service is just what it is called, a plain build service
but nothing more.

This is o.k. for me - I did just misinterpret what it actually is.

As far as I know the current build service does even not implement
real revision control (like e.g. SVN).

it does, check "osc log".

This is mostly useless for me:

jsmeix@nelson:/obs $ osc log openSUSE:Factory cups

shows all entries with "unknown" and "<no message>" but I know
that I explicitely provided messages while I did "osc commit".

osc commit messages go only to your project.

openSUSE:Factory does currently not use the build service accept mechanism
unfortunatly. So the special Rudi tools would need to get extended to add
"request accept" comment. Sounds important ...


In contrast in my own working copy directory

jsmeix@nelson:/obs/Printing/cups $ osc log

shows more info but still not my "osc commit" messages.
In my own working copy directory I do not need such information
very much because in my own working copy directory I know well
what I did there.


huh ?

# osc log Printing
----------------------------------------------------------------------------
r170 | autobuild | 2009-07-31 19:04:44 | 8c3f68c5fe8d9e82ec6fb6aa07a8971e |
unknown

checked in
----------------------------------------------------------------------------
r169 | jsmeix | 2009-07-31 15:22:11 | 5df4c71fb22b1a8ddd1d76ed399d9b79 |
unknown

Copy from home:jsmeix:branches:Printing/cups via accept of submit request
16211
Request was accepted with message:
Fixed major bug bnc#526847
----------------------------------------------------------------------------
r168 | autobuild | 2009-07-29 17:20:30 | 8c3f68c5fe8d9e82ec6fb6aa07a8971e |
unknown

checked in



In contrast it is crucial to have meningful "osc log" messages
when I query whatever package on the server to find out which
revisions are of particular interest regarding a particular issue.

what do you miss exactly ?

bye
adrian

--

Adrian Schroeter
SUSE Linux Products GmbH
email: adrian@xxxxxxx

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