[rules-dev] Git migration plans: keep it as similar to SVN as possible

[Geoffrey De Smet]

As promised, some more information about our move to git.
Note that these changes are not in effect yet, which should happen next 
Saturday.

First phase (this year)
==============

In this phase, *we will keep everything as similar to SVN as possible*.
So the learning curve is as gentle as possible.
This means:

    * *Same centralized model*
          o 1 SVN repository:
                + https://svn.jboss.org/repos/labs/labs/jbossrules
                + 1 additional anonymous repository mirror:
                      # http://anonsvn.jboss.org/repos/labs/labs/jbossrules
          o 1 Git /reference/ repository (= /blessed repository/):
                + https://github.com/droolsjbpm/droolsjbpm.git
                + No need for a separate anonymous repository
    * *Same authorization*
          o Everyone who had write access on the SVN repository, gets
            write access on the Git reference repository (for now).
                + If they send me their login details! [1]
    * *Same branches, same tags, same trunk (=master)
      *
          o master == trunk. master is just another word for trunk/.
            trunk/ shall hence forth be known as /master/.
          o Previous authors will be migrated correctly too, if and only
            if everyone sends me his user details [1].
    * *Same directory structure* (for now)
          o If you "git checkout master", you will see exactly the same
            directories and files as you see now if you "svn checkout trunk"
          o Our project will still build exactly the same way, don't worry.

I 'll also write a mail "Git migration: What do I need to do now that 
it's done?" so you're up and running fast next Monday.
Note that you should have already done [1] by tomorrow or you're a lot 
of time waiting for authorization next Monday!
Once everyone is acquainted with git, I 'll write a blog about how 
outsiders can supply us pull requests instead of clumsy patches.

[1] 
http://drools-java-rules-engine.46999.n3.nabble.com/Git-Next-Saterday-18-DEC-2010-we-are-moving-to-git-gt-Tell-me-your-github-login-before-Thursday-16-D0-td2069261.html

Future phases (next year)
================

In future phases (probably starting around the end of January) we might 
look into some bigger changes.

This is also the reason why it's called /droolsjbpm.git/ and not 
/drools.git/.
The droolsjbpm.git will be split up into git submodules called 
drools.git, jbpm.git, guvnor.git, ...
So you can checkout guvnor without checking out drools-core/compiler.
But droolsjbpm.git will still exist as an aggregation, so you will also 
still be able to checkout everything, like you do now.
All those git submodules and the aggregation repository, will all be 
under the github organization jbpmdrools:
   https://github.com/droolsjbpm

-- 
With kind regards,
Geoffrey De Smet

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