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Re: keeping legacy repo in sync with refactored repo

From: Stephen Connolly <stephen.alan.connolly_at_gmail.com>
Date: Mon, 2 Mar 2009 21:00:08 +0000

have a look at tailor from darcs

2009/3/2 Tyler <tyler_at_cryptio.net>

> Hey subverters,
>
> We have a legacy repository which will continue to be used while we
> migrate all of our products to a new, refactored repository. The legacy
> repo will live on for at least 6 months while new development proceeds
> in the refactored repo.
>
> Legacy repo looks something like this:
>
> svn://legacy/trunk/base_library
> svn://legacy/trunk/product
>
> Refactored repo looks something like this:
>
> svn://refactored/trunk/product/base_library
> svn://refactored/trunk/product
>
> (The real case is obviously a bit more complicated, with some
> directories moving to new locations and some files moving to new
> directories, etc.)
>
>
> Currently, we have a script that checks out the latest from the legacy
> repo, massages the checkout into the refactored form, and imports the
> massaged checkout into the refactored repo. This process must be
> performed manually and is tedious and error-prone (files that were added
> or deleted since the last migration need to be handled specially with
> svn add and svna rm in the refactored repo).
>
> What would be better is an automated process to handle all this.
>
> svnsync does a lot of what we want, but I don't see a way for svnsync to
> handle the massaging step in between the legacy repo and the refactored
> repo.
>
> I could write something that uses svnadmin dump on the legacy repo, then
> massages the dump files, then does svnadmin load on the refactored repo.
> svndumptool looks like it can handle the massaging (as a side effect of
> its merge command; see the section "Moving things around" from
> http://svn.borg.ch/svndumptool/0.5.0/README.txt).
>
> There is also svndumpfilter3 from
> http://furius.ca/pubcode/pub/conf/common/bin/svndumpfilter3.html, though
> it appears to be no longer maintained and I am uncertain of its
> pedigree.
>
>
> So, some questions:
>
> - Am I completely off-base in my approach? Is there a
> better/cleaner/easier way to keep these repositories in sync? Do you
> see any gotachas in my overall strategy?
>
> - Are any of these tools right? Are there others I haven't
> found/considered? Should I just write something from scratch?
>
>
> I'm happy to provide more details, but I was trying to keep this
> medium-length instead of painfully-long-god-why-are-you-still-talking
> :).
>
> Thanks,
> tyler
>
>

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Received on 2009-03-03 00:51:03 CET

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