[[PageOutline(1-3,Contents,inline)]]

= Publishing a release =

These instructions cover how to release minor and patch releases in a
project that uses trac/subversion for revision control and project
management. How to release major releases is not covered yet. Release
numbering follows the normal convention of major.minor.patch and the
APR (see http://apr.apache.org/versioning.html) guidelines for
releases are used.

The main development is performed in the trunk branch of the
repository. A new release branch is created for each minor release
from the trunk and patch releases are snapshots of the minor release
branch. This implies that patch work is performed in the minor release
branch, and changes made release branch is transferred to the trunk
every time a new patch release is made. Remember, patch work should be
limited to bug fixes and important fixes only leaving development of
new features and designs to the trunk branch, or other special branches.

Releases should only be performed by an appointed member of the team,
the Release Manager, and merges should be performed by a Merge
Manager. Of course, one team member can be both managers, thus
becoming the Release and Merge Manager.


== Minor release procedure ==

This section describes what to do when publishing a minor release.

 1. Make sure that all commits are performed into to the trunk, such
    as bumping version number(s) ([source:trunk/build.xml build.xml]),
    acknowledge contributions ([source:trunk/credits.txt credits.txt]),
    API changes that may affect backwards compatibility
    ([http://base.thep.lu.se/chrome/site/doc/html/appendix/appendix.incompatible.html API changes]),
    and other files as necessary.
    [[br]][[br]]
  i. Update version number in [source:trunk/build.xml build.xml]. Locate and change the
     below line
{{{
<property name="base.minorversion" value="B" />
}}}
  i. Update [source:trunk/credits.txt credits.txt]. Remember, ego and vanity is the currency of open
     source projects. Well, there are other reasons for open source
     projects but [source:trunk/credits.txt credits.txt] is for boosting peoples' ego. [[br]][[br]]
  i. Make sure that the API incompatibility list is up to date
     [http://base.thep.lu.se/chrome/site/doc/html/appendix/appendix.incompatible.html API changes].
     This document should really be changed as the API changes, please do not leave this task to be
     done at the last minute of release. [[br]][[br]]
  i. Make other changes as needed. If items are missing from this list, please add them with proper
     instructions for the items changes maintenance. [[br]][[br]]
  i. Commit changes to the repository, `svn ci -m "Preparing release A.B"`
     [[br]][[br]]
 1. Update copyright statements with
{{{
./bin/svndigest --copyright --no-report
}}}
    Examine the updates and commit changes with `svn ci -m "updating copyright statements"`. For
    this step [http://trac.thep.lu.se/trac/svndigest svndigest] is obviously needed. [[br]][[br]]
 1. Needless to say, make sure that the program is in a state to be
    released; make sure that all the tests pass, test the distribution
    package, and perform all other release tests you think is
    appropriate:
{{{
Please add test command sequence here
}}}
    If you fail in this step, please resolve the issues and restart these procedures. [[br]][[br]]
 1. Create a tag using a one liner like
{{{
svn copy http://lev.thep.lu.se/repository/base/trunk \
    http://lev.thep.lu.se/repository/base/tags/A.B \
    -m "Tagging version A.B"
}}}
 1. Update the version list in Trac using the
    [http://base.thep.lu.se/admin trac-admin tool].
    [[br]][[br]]
 1. Create a distribution package:
{{{
svn co http://lev.thep.lu.se/repository/base/tags/A.B A.B_dist
cd A.B_dist
ant package
}}}
    Upload the new packages to the [http://base2.thep.lu.se/base/ download area].
    Remove `A.B_dist` directory. [[br]][[br]]
 1. Create a new minor branch using a one liner like
{{{
svn copy http://lev.thep.lu.se/repository/base/tags/A.B \
    http://lev.thep.lu.se/repository/base/branches/A.B-stable \
    -m "New minor version A.B branch"
}}}
  Prepare the minor branch for the first patch release [[br]][[br]]
  i. Check out the new minor branch
{{{
svn co http://lev.thep.lu.se/repository/base/branches/A.B-stable A.B
}}}
  i. Update version number in `build.xml`. Locate and change the
     below line
{{{
<property name="base.maintenanceversion" value="1pre" />
}}}
  i. Commit changes to the repository,
     `svn ci -m "Changes for future release A.B.1"` [[br]][[br]]
 1. Prepare the trunk for the next minor release [[br]][[br]]
  i. Update version number in `build.xml`. Locate and change the
     below line
{{{
<property name="base.minorversion" value="B+1" />
}}}
  i. Commit changes to the repository,
     `svn ci -m "Changes for future release A.[B+1]"` [[br]][[br]]
 1. Update DownloadPage [[br]][[br]]
  i. Update the section '''Latest stable release''' to reflect the new
     version, that is [[br]][[br]]
   * Change the version number [[br]][[br]]
   * Update the package links to the new version [[br]][[br]]
  i. In section '''BASE ''latest release'' ''' modify the svn command to
{{{
svn checkout http://lev.thep.lu.se/repository/BASE/tags/A.B base-A.B
}}}
  i. In section '''BASE ''stable'' ''' update link to
     `[milestone:A.B.1 A.B.1]` and modify the svn command to
{{{
svn checkout http://lev.thep.lu.se/repository/base/branches/A.B-stable base-A.B
}}}
  i. In section '''BASE ''devel'' ''' update link to `[milestone:A.B+1 A.B+1]`.[[br]][[br]]
  i. Add a ''Base A.B'' subsection in the '''All packaged BASE releases''' section. [[br]][[br]]
 1. Close the [http://trac.thep.lu.se/trac/base/roadmap milestone]
    associated with the release and replace `head` with appropriate revision. Add a new milestone as
    needed (with an associated log link like ''Revision Log: log:branches/webservices@3001:head'' in the
    description field).



== Patch release procedure ==

This section describes what to do when publishing a patch release A.B.C.

 1. Make sure that all commits are performed into to the trunk, such
    as bumping version number(s) ([source:trunk/build.xml build.xml]),
    acknowledge contributions ([source:trunk/credits.txt credits.txt]),
    API changes that may affect backwards compatibility
    ([http://base.thep.lu.se/chrome/site/doc/html/appendix/appendix.incompatible.html API changes]),
    and other files as necessary.
    [[br]][[br]]
  i. Update version number in `build.xml`. Locate and change the
     below line
{{{
<property name="base.maintenanceversion" value="C" />
}}}
  i. Update `credits.txt`. [[br]][[br]]
  i. Make sure that the API incompatibility list is up to date
     [http://base.thep.lu.se/chrome/site/doc/html/appendix/appendix.incompatible.html API changes].
     This document should really be changed as the API changes, please do not leave this task to be
     done at the last minute of release. [[br]][[br]]
  i. Make other changes as needed. If items are missing from this list, please add them with proper
     instructions for the items changes maintenance. [[br]][[br]]
  i. Commit changes to the repository, `svn ci -m "Preparing release A.B.C"`
     [[br]][[br]]
 1. Update copyright statements with
{{{
./bin/svndigest --copyright --no-report
}}}
    Examine the updates and commit changes with `svn ci -m "updating copyright statements"`. For
    this step [http://trac.thep.lu.se/trac/svndigest svndigest] is obviously needed. [[br]][[br]]
 1. Needless to say, make sure that the program is in a state to be
    released; make sure that all the tests pass, test the distribution
    package, and perform all other release tests you think is
    appropriate:
{{{
Please add test command sequence here
}}}
    If you fail in this step, please resolve the issues and restart these procedures. [[br]][[br]]
 1. Create a tag using a one liner like
{{{
svn copy http://lev.thep.lu.se/repository/BASE/branches/A.B-stable \
    http://lev.thep.lu.se/repository/base/tags/A.B.C \
    -m "Tagging version A.B.C"
}}}
 1. Update the version list in Trac using the
    [http://lev.thep.lu.se/trac/base/admin trac-admin tool].
    [[br]][[br]]
 1. Create a distribution package:
{{{
svn co http://lev.thep.lu.se/repository/base/tags/A.B.C A.B.C_dist
cd A.B.C_dist
ant package
}}}
    Upload the new packages to the [http://base2.thep.lu.se/base/ download area].
    Remove `A.B.C_dist` directory. [[br]][[br]]
 1. Prepare the minor branch for the next patch release [[br]][[br]]
  i. Update version number in `build.xml`. Locate and change the
     below line
{{{
<property name="base.maintenanceversion" value="[C+1]" />
}}}
  i. Commit changes to the repository,
     `svn ci -m "Changes for future release A.B.[C+1]"` [[br]][[br]]
 1. Update DownloadPage [[br]][[br]]
  i. Update the section '''Latest stable release''' to reflect the new
     version, that is [[br]][[br]]
   * Change the version number [[br]][[br]]
   * Update the package links to the new version [[br]][[br]]
  i. In section '''base ''latest release'' ''' modify the svn command to
{{{
svn checkout http://lev.thep.lu.se/repository/base/tags/A.B.C base-A.B.C
}}}
  i. In section '''base ''stable'' ''' update link to
     `[milestone:A.B.[C+1] A.B.[C+1]]`.[[br]][[br]]
 1. Merge the patch release into the trunk. To avoid confusion and
    minimize the risk of loosing fixes, this step is only performed by
    the Merge Master. (Johan Enell is currently Merge Master and as the master
    he knows what he is doing.) [[br]][[br]]
  i. Checkout a pristine version of the trunk.
{{{
svn checkout http://lev.thep.lu.se/repository/base/trunk trunk_merge
}}}
  i. Merge changes into trunk. In this example the diffence between a
     minor release tag and the first patch release tag is merged into
     the trunk WC
{{{
cd trunk_merge
svn merge http://lev.thep.lu.se/repository/base/tags/A.B \
          http://lev.thep.lu.se/repository/base/tags/A.B.1
}}}
  i. Resolve all conflicts. Run tests and perform all other
     appropriate tests to make sure that the merge does not create
     havoc. (run !TestAll and perform an installation.) [[br]][[br]]
  i. Commit changes to the trunk branch.
{{{
svn commit -m "Merged patch release A.B.1 to the trunk. Delta A.B.1 - A.B"
}}}
 1. ''Performing this step is to acnkowledge that the merge has been performed.'' [[br]]
    Close the milestone associated with the release and replace `head` with appropriate
    revision in log link. Add a new milestone as needed (with an associated log link like
    ''Revision Log: log:branches/webservices@3001:head'' in the description field).