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Contributing
DevStack uses the standard OpenStack contribution process as outlined in the OpenStack wiki 'How To Contribute'. This means that you will need to meet the requirements of the Contribututors License Agreement (CLA). If you have already done that for another OpenStack project you are good to go.
Things To Know
Where Things Are
The official DevStack repository is located at
git://git.openstack.org/openstack-dev/devstack.git,
replicated from the repo maintained by Gerrit. GitHub also has a mirror
at git://github.com/openstack-dev/devstack.git.
The blueprint and bug trackers are on Launchpad. It should be noted that DevStack generally does not use these as strongly as other projects, but we're trying to change that.
The Gerrit review queue is, however, used for all commits except for the text of this website. That should also change in the near future.
HACKING.rst
Like most OpenStack projects, DevStack includes a
HACKING.rst file that describes the layout, style and
conventions of the project. Because HACKING.rst is in the
main DevStack repo it is considered authoritative. Much of the content
on this page is taken from there.
bashate Formatting
Around the time of the OpenStack Havana release we added a tool to do
style checking in DevStack similar to what pep8/flake8 do for Python
projects. It is still _very_ simplistic, focusing mostly on stray
whitespace to help prevent -1 on reviews that are otherwise acceptable.
Oddly enough it is called bashate. It will be expanded to
enforce some of the documentation rules in comments that are used in
formatting the script pages for devstack.org and possibly even simple
code formatting. Run it on the entire project with
./run_tests.sh.
Code
Repo Layout
The DevStack repo generally keeps all of the primary scripts at the root level.
doc - Contains the Sphinx source for the documentation.
tools/build_docs.sh is used to generate the HTML versions
of the DevStack scripts. A complete doc build can be run with
tox -edocs.
exercises - Contains the test scripts used to
sanity-check and demonstrate some OpenStack functions. These scripts
know how to exit early or skip services that are not enabled.
extras.d - Contains the dispatch scripts called by the
hooks in stack.sh, unstack.sh and
clean.sh. See the plugins
docs <plugins> for more information.
files - Contains a variety of otherwise lost files used
in configuring and operating DevStack. This includes templates for
configuration files and the system dependency information. This is also
where image files are downloaded and expanded if necessary.
lib - Contains the sub-scripts specific to each project.
This is where the work of managing a project's services is located. Each
top-level project (Keystone, Nova, etc) has a file here. Additionally
there are some for system services and project plugins.
samples - Contains a sample of the local files not
included in the DevStack repo.
tests - the DevStack test suite is rather sparse, mostly
consisting of test of specific fragile functions in the
functions and functions-common files.
tools - Contains a collection of stand-alone scripts.
While these may reference the top-level DevStack configuration they can
generally be run alone. There are also some sub-directories to support
specific environments such as XenServer.