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============
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Contributing
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============
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Our community welcomes all people interested in open source cloud
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computing, and encourages you to join the `OpenStack Foundation
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<http://www.openstack.org/join>`_.
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If you would like to contribute to the development of OpenStack,
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you must follow the steps documented at:
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http://docs.openstack.org/infra/manual/developers.html#development-workflow
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Once those steps have been completed, changes to OpenStack
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should be submitted for review via the Gerrit tool, following
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the workflow documented at:
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http://docs.openstack.org/infra/manual/developers.html#development-workflow
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(Pull requests submitted through GitHub will be ignored.)
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Bugs should be filed on Launchpad, not GitHub:
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https://bugs.launchpad.net/trove
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We welcome all types of contributions, from blueprint designs to
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documentation to testing to deployment scripts. The best way to get
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involved with the community is to talk with others online or at a
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meetup and offer contributions through our processes, the `OpenStack
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wiki <http://wiki.openstack.org>`_, blogs, or on IRC at
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``#openstack-trove`` on ``irc.freenode.net``.
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House Rules
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===========
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Code Reviews
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------------
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We value your contribution in reviewing code changes submitted by
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others, as this helps increase the quality of the product as well.
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The Trove project encourages the guidelines (below).
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- A rating of +1 on a code review is indicated if:
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* It is your opinion that the change, as proposed, should be
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considered for merging.
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- A rating of 0 on a code review is indicated if:
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* The reason why you believe that the proposed change needs
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improvement is merely an opinion,
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* You have a question, or need a clarification from the author,
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* The proposed change is functional but you believe that there is
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a different, better, or more appropriate way in which to
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achieve the end result being sought by the proposed change,
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* There is an issue of some kind with the Commit Message,
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including violations of the Commit Message guidelines,
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* There is a typographical or formatting error in the commit
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message or the body of the change itself,
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* There could be improvements in the test cases provided as part
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of the proposed change.
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- A rating of -1 on a code review is indicated if:
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* The reason why you believe that the proposed change needs
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improvement is irrefutable, or it is a widely shared opinion as
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indicated by a number of +0 comments,
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* The subject matter of the change (not the commit message)
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violates some well understood OpenStack procedure(s),
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* The change contains content that is demonstrably inappropriate,
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* The test cases do not exercise the change(s) being proposed,
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* The change causes a failure in the pylint job (see pylint
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section below).
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Some other reviewing guidelines:
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- In general, when in doubt, a rating of 0 is advised,
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- The code style guidelines accepted by the project are part of
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tox.ini, a violation of some other hacking rule(s), or pep8 is
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not a reason to -1 a change.
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Other references:
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- https://wiki.openstack.org/wiki/CodeReviewGuidelines
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- http://docs.openstack.org/infra/manual/developers.html
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- https://wiki.openstack.org/wiki/ReviewChecklist
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- https://wiki.openstack.org/wiki/GitCommitMessages
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- http://docs.openstack.org/developer/hacking/
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- https://review.openstack.org/#/c/116176/
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- trove-pylint readme file in tools/trove-pylint.README
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Approving changes
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-----------------
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The Trove project follows the conventions below in approving changes.
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1. In general, two core reviewers must +2 a change before it can be
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approved. In practice this means that coreA can +2 the change, then
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coreB can +2/+A the change and it can be merged.
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2. coreA and coreB should belong to different organizations.
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3. For requirements changes proposed by the Proposal Bot or
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translations proposed by Zanata, a single core reviewer can review
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and approve the change.
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NOTE:
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For the remainder of the Newton release cycle, we will relax the above
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conventions. These relaxations apply to the master branch only.
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We will adopt a practice of lazy consensus for approving all changes
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and a single core reviewer can review and approve a change. This could
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be done, for example, by allowing all reviewers know that he or she
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intends to approve some change or set of changes if there are no
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additional negative comments by a certain time definite.
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We will however still require that at least one other person review
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(and +1 or +2) the change before it can be +A'ed.
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Abandoning changes
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------------------
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At the Trove mid-cycle held in July 2016 we discussed our process for
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abandoning changes and concluded that we would adopt the following
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process.
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1. We will take a more proactive policy towards abandoning changes
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that have not been merged for a long time.
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2. A list of changes proposed for abandonment will be presented at a
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weekly meeting and if there is no objection, those changes will be
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abandoned. If the patch sets are associated with bugs, the bugs
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will be unassigned.
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3. In general, changes will be proposed for abandonment if the change
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being proposed has either been addressed in some other patch set,
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or if the patch is not being actively maintained by the author and
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there is no available volunteer who will step up to take over the
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patch set.
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Trove Documentation
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===================
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This repository also contains the Database Services API Reference.
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To build the API reference, run::
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$ tox -e api-ref
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The generated documentation is found::
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api-ref/html/index.html
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Trove PyLint Failures
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=====================
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The Trove project uses trove-pylint (tools/trove-pylint) in the gate
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and this job is intended to help catch coding errors that sometimes
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may not get caught in a code review, or by the automated tests.
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The gate-trove-tox-pylint jobs are run by the CI, and these invoke the
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command in tools/trove-pylint.
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The tool can produce false-positive notifications and therefore
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supports a mechanism to provide a list of errors that are to be
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ignored.
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Before submitting a change, please do run
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.. code-block:: bash
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$ tox -e pylint
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on your development environment. If this fails, you will have to
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resolve all the errors before you can commit the code.
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This means you either must fix the problem being identified, or
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regenerate the list of ignored errors and submit that as part of your
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review.
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To regenerate the list of ignored errors, you run the command(s):
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.. code-block:: bash
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$ tox -e pylint rebuild
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Warning: trove-pylint is very sensitive to the version(s) of pylint
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and astroid that are installed on your system and for this reason, a
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tox environment is provided that will mimic the environment that
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pylint will encouter in the gate.
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Pre-commit checklist
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====================
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Before commiting code to Gerrit for review, please at least do the
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following on your development system and ensure that they pass.
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.. code-block:: bash
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$ tox -e pep8
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$ tox -e py27
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$ tox -e py34
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$ tox -e pylint
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If you are unable to get these to pass locally, it is a waste of the
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CI resources to push up a change for review.
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Testing
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=======
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Usage for integration testing
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-----------------------------
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If you'd like to start up a fake Trove API daemon for integration testing
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with your own tool, run:
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.. code-block:: bash
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$ ./tools/start-fake-mode.sh
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Stop the server with:
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.. code-block:: bash
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$ ./tools/stop-fake-mode.sh
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Tests
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-----
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To run all tests and PEP8, run tox, like so:
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.. code-block:: bash
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$ tox
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To run just the tests for Python 2.7, run:
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.. code-block:: bash
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$ tox -epy27
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To run just PEP8, run:
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.. code-block:: bash
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$ tox -epep8
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To generate a coverage report,run:
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.. code-block:: bash
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$ tox -ecover
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(note: on some boxes, the results may not be accurate unless you run it twice)
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If you want to run only the tests in one file you can use testtools e.g.
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.. code-block:: bash
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$ python -m testtools.run trove.tests.unittests.python.module.path
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