Browse Source

Initialize the venus-specs project

Change-Id: I788a3c0a4ec29deaeb8a73ce061aaa9dbd06e0b2
changes/03/768503/1
jiasirui 11 months ago
parent
commit
85954e9f55
  1. 6
      .coveragerc
  2. 63
      .gitignore
  3. 3
      .mailmap
  4. 3
      .stestr.conf
  5. 17
      CONTRIBUTING.rst
  6. 4
      HACKING.rst
  7. 176
      LICENSE
  8. 42
      README.rst
  9. 7
      doc/requirements.txt
  10. 92
      doc/source/conf.py
  11. 232
      doc/source/index.rst
  12. 19
      doc/source/specs/__init__.py
  13. 392
      doc/source/specs/wallaby-template.rst
  14. 392
      doc/source/specs/wallaby/approved/template.rst
  15. 392
      doc/source/specs/wallaby/implemented/template.rst
  16. 14
      setup.cfg
  17. 20
      setup.py
  18. 19
      specs/__init__.py
  19. 392
      specs/wallaby-template.rst
  20. 392
      specs/wallaby/approved/template.rst
  21. 392
      specs/wallaby/implemented/template.rst
  22. 12
      test-requirements.txt
  23. 56
      tox.ini

6
.coveragerc

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[run]
branch = True
source = specs
[report]
ignore_errors = True

63
.gitignore

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*.py[cod]
# C extensions
*.so
# Packages
*.egg*
*.egg-info
dist
build
eggs
parts
bin
var
sdist
develop-eggs
.installed.cfg
lib
lib64
#IDEA
.idea
# Installer logs
pip-log.txt
# Unit test / coverage reports
cover/
.coverage*
!.coveragerc
.tox
nosetests.xml
.testrepository
.stestr
.venv
# Translations
*.mo
# Mr Developer
.mr.developer.cfg
.project
.pydevproject
# Complexity
output/*.html
output/*/index.html
# Sphinx
doc/build
# pbr generates these
AUTHORS
ChangeLog
# Editors
*~
.*.swp
.*sw?
.vscode/*
# Files created by releasenotes build
releasenotes/build

3
.mailmap

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# Format is:
# <preferred e-mail> <other e-mail 1>
# <preferred e-mail> <other e-mail 2>

3
.stestr.conf

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[DEFAULT]
test_path=./specs/tests
top_dir=./

17
CONTRIBUTING.rst

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If you would like to contribute to the development of OpenStack, you must
follow the steps in this page:
http://docs.openstack.org/infra/manual/developers.html
If you already have a good understanding of how the system works and your
OpenStack accounts are set up, you can skip to the development workflow
section of this documentation to learn how changes to OpenStack should be
submitted for review via the Gerrit tool:
http://docs.openstack.org/infra/manual/developers.html#development-workflow
Pull requests submitted through GitHub will be ignored.
Bugs should be filed on Launchpad, not GitHub:
https://bugs.launchpad.net/venus

4
HACKING.rst

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venus-specs Style Commandments
===============================================
Read the OpenStack Style Commandments https://docs.openstack.org/hacking/latest/

176
LICENSE

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42
README.rst

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========================
Team and repository tags
========================
.. image:: http://governance.openstack.org/tc/badges/venus-specs.svg
:target: http://governance.openstack.org/tc/reference/tags/index.html
.. Change things from this point on
===============================
OpenStack Venus Specifications
===============================
This git repository is used to hold approved design specifications for additions
to the Venus project. Reviews of the specs are done in gerrit, using a similar
workflow to how we review and merge changes to the code itself.
The layout of this repository is::
specs/<release>/
Where there are two sub-directories:
specs/<release>/approved: specifications approved but not yet implemented
specs/<release>/implemented: implemented specifications
This directory structure allows you to see what we thought about doing,
decided to do, and actually got done. Users interested in functionality in a
given release should only refer to the ``implemented`` directory.
You can find an example spec in `doc/source/specs/template.rst`.
To track all the blueprints of venus, please refer to the trello board:
https://trello.com/b/4nFtHNSg/queens-dev
To validate that the specification is syntactically correct (i.e. get more
confidence in the Jenkins result), please execute the following command::
$ tox
After running ``tox``, the documentation will be available for viewing in HTML
format in the ``doc/build/`` directory.

7
doc/requirements.txt

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# The order of packages is significant, because pip processes them in the order
# of appearance. Changing the order has an impact on the overall integration
# process, which may cause wedges in the gate later.
sphinx>=2.0.0,!=2.1.0 # BSD
sphinxcontrib-seqdiag>=0.8.4 # BSD
openstackdocstheme>=2.2.1 # Apache-2.0
yasfb>=0.5.1

92
doc/source/conf.py

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# -*- coding: utf-8 -*-
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import sys
sys.path.insert(0, os.path.abspath('../..'))
# -- General configuration ----------------------------------------------------
# Add any Sphinx extension module names here, as strings. They can be
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
extensions = [
'sphinx.ext.autodoc',
'openstackdocstheme',
#'sphinx.ext.intersphinx',
'sphinxcontrib.seqdiag',
'yasfb',
]
# Feed configuration for yasfb
feed_base_url = 'http://specs.openstack.org/openstack/venus-specs'
feed_author = 'OpenStack Development Team'
# autodoc generation is a bit aggressive and a nuisance when doing heavy
# text edit cycles.
# execute "export SPHINX_DEBUG=1" in your terminal to disable
# The suffix of source filenames.
source_suffix = '.rst'
# The master toctree document.
master_doc = 'index'
# General information about the project.
project = u'venus-specs'
copyright = u'2017, OpenStack Developers'
# openstackdocstheme options
openstackdocs_repo_name = 'openstack/venus-specs'
openstackdocs_auto_name = False
openstackdocs_use_storyboard = True
# If true, '()' will be appended to :func: etc. cross-reference text.
add_function_parentheses = True
# If true, the current module name will be prepended to all description
# unit titles (such as .. function::).
add_module_names = True
# The name of the Pygments (syntax highlighting) style to use.
pygments_style = 'native'
# -- Options for HTML output --------------------------------------------------
# The theme to use for HTML and HTML Help pages. Major themes that come with
# Sphinx are currently 'default' and 'sphinxdoc'.
# html_theme_path = ["."]
# html_theme = '_theme'
# html_static_path = ['static']
html_theme = 'openstackdocs'
# Output file base name for HTML help builder.
htmlhelp_basename = '%sdoc' % project
# Grouping the document tree into LaTeX files. List of tuples
# (source start file, target name, title, author, documentclass
# [howto/manual]).
latex_documents = [
('index',
'%s.tex' % project,
u'%s Documentation' % project,
u'OpenStack Developers', 'manual'),
]
# Example configuration for intersphinx: refer to the Python standard library.
#intersphinx_mapping = {'http://docs.python.org/': None}
# -- seqdiag configuration ----------------------------------------------------
seqdiag_html_image_format = 'SVG'
seqdiag_antialias = True

232
doc/source/index.rst

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.. venus-specs documentation master file, created by
sphinx-quickstart on Tue Jul 9 22:26:36 2013.
You can adapt this file completely to your liking, but it should at least
contain the root `toctree` directive.
============
Venus Specs
============
Wallaby
-------
This section has a list of specs for the Wallaby release.
Template:
.. toctree::
:glob:
:maxdepth: 1
Specification Template (Wallaby release) <specs/wallaby-template>
Wallaby implemented specs:
.. toctree::
:glob:
:maxdepth: 1
specs/wallaby/implemented/*
Wallaby approved (but not implemented) specs:
.. toctree::
:glob:
:maxdepth: 1
specs/wallaby/approved/*
Victoria
--------
This section has a list of specs for the Victoria release.
Template:
.. toctree::
:glob:
:maxdepth: 1
Specification Template (Victoria release) <specs/victoria-template>
Victoria implemented specs:
.. toctree::
:glob:
:maxdepth: 1
specs/victoria/implemented/*
Victoria approved (but not implemented) specs:
.. toctree::
:glob:
:maxdepth: 1
specs/victoria/approved/*
Ussuri
------
This section has a list of specs for the Ussuri release.
Template:
.. toctree::
:glob:
:maxdepth: 1
Specification Template (Ussuri release) <specs/ussuri-template>
Ussuri implemented specs:
.. toctree::
:glob:
:maxdepth: 1
specs/ussuri/implemented/*
Ussuri approved (but not implemented) specs:
.. toctree::
:glob:
:maxdepth: 1
specs/ussuri/approved/*
Train
-----
This section has a list of specs for the Train release.
Template:
.. toctree::
:glob:
:maxdepth: 1
Specification Template (Train release) <specs/train-template>
Train implemented specs:
.. toctree::
:glob:
:maxdepth: 1
specs/train/implemented/*
Train approved (but not implemented) specs:
.. toctree::
:glob:
:maxdepth: 1
specs/train/approved/*
Stein
-----
This section has a list of specs for the Stein release.
Template:
.. toctree::
:glob:
:maxdepth: 1
Specification Template (Stein release) <specs/stein-template>
Stein implemented specs:
.. toctree::
:glob:
:maxdepth: 1
specs/stein/implemented/*
Stein approved (but not implemented) specs:
.. toctree::
:glob:
:maxdepth: 1
specs/stein/approved/*
Rocky
-----
This section has a list of specs for the Rocky release.
Template:
.. toctree::
:glob:
:maxdepth: 1
Specification Template (Rocky release) <specs/rocky-template>
Rocky implemented specs:
.. toctree::
:glob:
:maxdepth: 1
specs/rocky/implemented/*
Rocky approved (but not implemented) specs:
.. toctree::
:glob:
:maxdepth: 1
specs/rocky/approved/*
Queens
------
This section has a list of specs for the Queens release.
Template:
.. toctree::
:glob:
:maxdepth: 1
Specification Template (Queens release) <specs/queens-template>
Queens implemented specs:
.. toctree::
:glob:
:maxdepth: 1
specs/queens/implemented/*
Queens approved (but not implemented) specs:
.. toctree::
:glob:
:maxdepth: 1
specs/queens/approved/*
Pike
----
This section has a list of specs for the Pike release.
Template:
.. toctree::
:glob:
:maxdepth: 1
Specification Template (Pike release) <specs/pike-template>
Pike implemented specs:
.. toctree::
:glob:
:maxdepth: 1
specs/pike/implemented/*
Pike approved (but not implemented) specs:
.. toctree::
:glob:
:maxdepth: 1
specs/pike/approved/*

19
doc/source/specs/__init__.py

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# -*- coding: utf-8 -*-
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import pbr.version
__version__ = pbr.version.VersionInfo(
'venus-specs').version_string()

392
doc/source/specs/wallaby-template.rst

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..
This work is licensed under a Creative Commons Attribution 3.0 Unported
License.
http://creativecommons.org/licenses/by/3.0/legalcode
==========================================
Example Spec - The title of your blueprint
==========================================
Include the URL of your launchpad blueprint:
https://blueprints.launchpad.net/openstack-venus/+spec/example
Introduction paragraph -- why are we doing anything? A single paragraph of
prose that operators can understand. The title and this first paragraph
should be used as the subject line and body of the commit message
respectively.
Some notes about the venus-spec and blueprint process:
* Not all blueprints need a spec. For more information see
https://docs.openstack.org/developer/venus/blueprints.html#specs
* The aim of this document is first to define the problem we need to solve,
and second agree the overall approach to solve that problem.
* This is not intended to be extensive documentation for a new feature.
For example, there is no need to specify the exact configuration changes,
nor the exact details of any DB model changes. But you should still define
that such changes are required, and be clear on how that will affect
upgrades.
* You should aim to get your spec approved before writing your code.
While you are free to write prototypes and code before getting your spec
approved, its possible that the outcome of the spec review process leads
you towards a fundamentally different solution than you first envisaged.
* But, API changes are held to a much higher level of scrutiny.
As soon as an API change merges, we must assume it could be in production
somewhere, and as such, we then need to support that API change forever.
To avoid getting that wrong, we do want lots of details about API changes
upfront.
Some notes about using this template:
* Your spec should be in ReSTructured text, like this template.
* Please wrap text at 79 columns.
* The filename in the git repository should match the launchpad URL, for
example a URL of: https://blueprints.launchpad.net/openstack-venus/+spec/awesome-thing
should be named awesome-thing.rst
* Please do not delete any of the sections in this template. If you have
nothing to say for a whole section, just write: None
* For help with syntax, see http://sphinx-doc.org/rest.html
* To test out your formatting, build the docs using tox and see the generated
HTML file in doc/build/html/specs/<path_of_your_file>
* If you would like to provide a diagram with your spec, ascii diagrams are
required. http://asciiflow.com/ is a very nice tool to assist with making
ascii diagrams. The reason for this is that the tool used to review specs is
based purely on plain text. Plain text will allow review to proceed without
having to look at additional files which can not be viewed in gerrit. It
will also allow inline feedback on the diagram itself.
* If your specification proposes any changes to the Venus REST API such
as changing parameters which can be returned or accepted, or even
the semantics of what happens when a client calls into the API, then
you should add the APIImpact flag to the commit message. Specifications with
the APIImpact flag can be found with the following query:
https://review.opendev.org/#/q/status:open+project:openstack/venus+message:apiimpact,n,z
Problem description
===================
A detailed description of the problem. What problem is this blueprint
addressing?
Use Cases
---------
What use cases does this address? What impact on actors does this change have?
Ensure you are clear about the actors in each use case: Developer, End User,
Deployer etc.
Proposed change
===============
Here is where you cover the change you propose to make in detail. How do you
propose to solve this problem?
If this is one part of a larger effort make it clear where this piece ends. In
other words, what's the scope of this effort?
At this point, if you would like to just get feedback on if the problem and
proposed change fit in Venus, you can stop here and post this for review to
get preliminary feedback. If so please say:
Posting to get preliminary feedback on the scope of this spec.
Alternatives
------------
What other ways could we do this thing? Why aren't we using those? This doesn't
have to be a full literature review, but it should demonstrate that thought has
been put into why the proposed solution is an appropriate one.
Data model impact
-----------------
Changes which require modifications to the data model often have a wider impact
on the system. The community often has strong opinions on how the data model
should be evolved, from both a functional and performance perspective. It is
therefore important to capture and gain agreement as early as possible on any
proposed changes to the data model.
Questions which need to be addressed by this section include:
* What new data objects and/or database schema changes is this going to
require?
* What database migrations will accompany this change.
* How will the initial set of new data objects be generated, for example if you
need to take into account existing instances, or modify other existing data
describe how that will work.
REST API impact
---------------
Each API method which is either added or changed should have the following
* Specification for the method
* A description of what the method does suitable for use in
user documentation
* Method type (POST/PUT/GET/DELETE)
* Normal http response code(s)
* Expected error http response code(s)
* A description for each possible error code should be included
describing semantic errors which can cause it such as
inconsistent parameters supplied to the method, or when an
instance is not in an appropriate state for the request to
succeed. Errors caused by syntactic problems covered by the JSON
schema definition do not need to be included.
* URL for the resource
* URL should not include underscores, and use hyphens instead.
* Parameters which can be passed via the url
* JSON schema definition for the request body data if allowed
* Field names should use snake_case style, not CamelCase or MixedCase
style.
* JSON schema definition for the response body data if any
* Field names should use snake_case style, not CamelCase or MixedCase
style.
* Example use case including typical API samples for both data supplied
by the caller and the response
* Discuss any policy changes, and discuss what things a deployer needs to
think about when defining their policy.
Note that the schema should be defined as restrictively as
possible. Parameters which are required should be marked as such and
only under exceptional circumstances should additional parameters
which are not defined in the schema be permitted (eg
additionaProperties should be False).
Reuse of existing predefined parameter types such as regexps for
passwords and user defined names is highly encouraged.
Security impact
---------------
Describe any potential security impact on the system. Some of the items to
consider include:
* Does this change touch sensitive data such as tokens, keys, or user data?
* Does this change alter the API in a way that may impact security, such as
a new way to access sensitive information or a new way to login?
* Does this change involve cryptography or hashing?
* Does this change require the use of sudo or any elevated privileges?
* Does this change involve using or parsing user-provided data? This could
be directly at the API level or indirectly such as changes to a cache layer.
* Can this change enable a resource exhaustion attack, such as allowing a
single API interaction to consume significant server resources? Some examples
of this include launching subprocesses for each connection, or entity
expansion attacks in XML.
For more detailed guidance, please see the OpenStack Security Guidelines as
a reference (https://wiki.openstack.org/wiki/Security/Guidelines). These
guidelines are a work in progress and are designed to help you identify
security best practices. For further information, feel free to reach out
to the OpenStack Security Group at openstack-security@lists.openstack.org.
Notifications impact
--------------------
Please specify any changes to notifications. Be that an extra notification,
changes to an existing notification, or removing a notification.
Other end user impact
---------------------
Aside from the API, are there other ways a user will interact with this
feature?
* Does this change have an impact on python-venusclient? What does the user
interface there look like?
Performance Impact
------------------
Describe any potential performance impact on the system, for example
how often will new code be called, and is there a major change to the calling
pattern of existing code.
Examples of things to consider here include:
* A periodic task might look like a small addition but if it calls conductor or
another service the load is multiplied by the number of nodes in the system.
* Scheduler filters get called once per host for every instance being created,
so any latency they introduce is linear with the size of the system.
* A small change in a utility function or a commonly used decorator can have a
large impacts on performance.
* Calls which result in a database queries (whether direct or via conductor)
can have a profound impact on performance when called in critical sections of
the code.
* Will the change include any locking, and if so what considerations are there
on holding the lock?
Other deployer impact
---------------------
Discuss things that will affect how you deploy and configure OpenStack
that have not already been mentioned, such as:
* What config options are being added? Should they be more generic than
proposed (for example a flag that other hypervisor drivers might want to
implement as well)? Are the default values ones which will work well in
real deployments?
* Is this a change that takes immediate effect after its merged, or is it
something that has to be explicitly enabled?
* If this change is a new binary, how would it be deployed?
* Please state anything that those doing continuous deployment, or those
upgrading from the previous release, need to be aware of. Also describe
any plans to deprecate configuration values or features. For example, if we
change the directory name that instances are stored in, how do we handle
instance directories created before the change landed? Do we move them? Do
we have a special case in the code? Do we assume that the operator will
recreate all the instances in their cloud?
Developer impact
----------------
Discuss things that will affect other developers working on OpenStack,
such as:
* If the blueprint proposes a change to the driver API, discussion of how
other hypervisors would implement the feature is required.
Implementation
==============
Assignee(s)
-----------
Who is leading the writing of the code? Or is this a blueprint where you're
throwing it out there to see who picks it up?
If more than one person is working on the implementation, please designate the
primary author and contact.
Primary assignee:
<launchpad-id or None>
Other contributors:
<launchpad-id or None>
Work Items
----------
Work items or tasks -- break the feature up into the things that need to be
done to implement it. Those parts might end up being done by different people,
but we're mostly trying to understand the timeline for implementation.
Dependencies
============
* Include specific references to specs and/or blueprints in venus, or in other
projects, that this one either depends on or is related to.
* If this requires functionality of another project that is not currently used
by Venus, document that fact.
* Does this feature require any new library dependencies or code otherwise not
included in OpenStack? Or does it depend on a specific version of library?
Testing
=======
Please discuss the important scenarios needed to test here, as well as
specific edge cases we should be ensuring work correctly. For each
scenario please specify if this requires specialized hardware, a full
OpenStack environment, or can be simulated inside the Venus tree.
Please discuss how the change will be tested. We especially want to know what
tempest tests will be added. It is assumed that unit test coverage will be
added so that doesn't need to be mentioned explicitly, but discussion of why
you think unit tests are sufficient and we don't need to add more tempest
tests would need to be included.
Is this untestable in gate given current limitations (specific hardware /
software configurations available)? If so, are there mitigation plans (3rd
party testing, gate enhancements, etc).
Documentation Impact
====================
Which audiences are affected most by this change, and which documentation
titles on docs.openstack.org should be updated because of this change? Don't
repeat details discussed above, but reference them here in the context of
documentation for multiple audiences. For example, the Operations Guide targets
cloud operators, and the End User Guide would need to be updated if the change
offers a new feature available through the CLI or dashboard. If a config option
changes or is deprecated, note here that the documentation needs to be updated
to reflect this specification's change.
References
==========
Please add any useful references here. You are not required to have any
reference. Moreover, this specification should still make sense when your
references are unavailable. Examples of what you could include are:
* Links to mailing list or IRC discussions
* Links to notes from a summit session
* Links to relevant research, if appropriate
* Related specifications as appropriate (e.g. if it's an EC2 thing, link the
EC2 docs)
* Anything else you feel it is worthwhile to refer to
History
=======
Optional section intended to be used each time the spec is updated to describe
new design, API or any database schema updated. Useful to let reader understand
what's happened along the time.
.. list-table:: Revisions
:header-rows: 1
* - Release Name
- Description
* - Wallaby
- Introduced

392
doc/source/specs/wallaby/approved/template.rst

@ -0,0 +1,392 @@
..
This work is licensed under a Creative Commons Attribution 3.0 Unported
License.
http://creativecommons.org/licenses/by/3.0/legalcode
==========================================
Example Spec - The title of your blueprint
==========================================
Include the URL of your launchpad blueprint:
https://blueprints.launchpad.net/openstack-venus/+spec/example
Introduction paragraph -- why are we doing anything? A single paragraph of
prose that operators can understand. The title and this first paragraph
should be used as the subject line and body of the commit message
respectively.
Some notes about the venus-spec and blueprint process:
* Not all blueprints need a spec. For more information see
https://docs.openstack.org/developer/venus/blueprints.html#specs
* The aim of this document is first to define the problem we need to solve,
and second agree the overall approach to solve that problem.
* This is not intended to be extensive documentation for a new feature.
For example, there is no need to specify the exact configuration changes,
nor the exact details of any DB model changes. But you should still define
that such changes are required, and be clear on how that will affect
upgrades.
* You should aim to get your spec approved before writing your code.
While you are free to write prototypes and code before getting your spec
approved, its possible that the outcome of the spec review process leads
you towards a fundamentally different solution than you first envisaged.
* But, API changes are held to a much higher level of scrutiny.
As soon as an API change merges, we must assume it could be in production
somewhere, and as such, we then need to support that API change forever.
To avoid getting that wrong, we do want lots of details about API changes
upfront.
Some notes about using this template:
* Your spec should be in ReSTructured text, like this template.
* Please wrap text at 79 columns.
* The filename in the git repository should match the launchpad URL, for
example a URL of: https://blueprints.launchpad.net/openstack-venus/+spec/awesome-thing
should be named awesome-thing.rst
* Please do not delete any of the sections in this template. If you have
nothing to say for a whole section, just write: None
* For help with syntax, see http://sphinx-doc.org/rest.html
* To test out your formatting, build the docs using tox and see the generated
HTML file in doc/build/html/specs/<path_of_your_file>
* If you would like to provide a diagram with your spec, ascii diagrams are
required. http://asciiflow.com/ is a very nice tool to assist with making
ascii diagrams. The reason for this is that the tool used to review specs is
based purely on plain text. Plain text will allow review to proceed without
having to look at additional files which can not be viewed in gerrit. It
will also allow inline feedback on the diagram itself.
* If your specification proposes any changes to the Venus REST API such
as changing parameters which can be returned or accepted, or even
the semantics of what happens when a client calls into the API, then
you should add the APIImpact flag to the commit message. Specifications with
the APIImpact flag can be found with the following query:
https://review.opendev.org/#/q/status:open+project:openstack/venus+message:apiimpact,n,z
Problem description
===================
A detailed description of the problem. What problem is this blueprint
addressing?
Use Cases
---------
What use cases does this address? What impact on actors does this change have?
Ensure you are clear about the actors in each use case: Developer, End User,
Deployer etc.
Proposed change
===============
Here is where you cover the change you propose to make in detail. How do you
propose to solve this problem?
If this is one part of a larger effort make it clear where this piece ends. In
other words, what's the scope of this effort?
At this point, if you would like to just get feedback on if the problem and
proposed change fit in Venus, you can stop here and post this for review to
get preliminary feedback. If so please say:
Posting to get preliminary feedback on the scope of this spec.
Alternatives
------------
What other ways could we do this thing? Why aren't we using those? This doesn't
have to be a full literature review, but it should demonstrate that thought has
been put into why the proposed solution is an appropriate one.
Data model impact
-----------------
Changes which require modifications to the data model often have a wider impact
on the system. The community often has strong opinions on how the data model
should be evolved, from both a functional and performance perspective. It is
therefore important to capture and gain agreement as early as possible on any
proposed changes to the data model.
Questions which need to be addressed by this section include:
* What new data objects and/or database schema changes is this going to
require?
* What database migrations will accompany this change.
* How will the initial set of new data objects be generated, for example if you
need to take into account existing instances, or modify other existing data
describe how that will work.
REST API impact
---------------
Each API method which is either added or changed should have the following
* Specification for the method
* A description of what the method does suitable for use in
user documentation
* Method type (POST/PUT/GET/DELETE)
* Normal http response code(s)
* Expected error http response code(s)
* A description for each possible error code should be included
describing semantic errors which can cause it such as
inconsistent parameters supplied to the method, or when an
instance is not in an appropriate state for the request to
succeed. Errors caused by syntactic problems covered by the JSON
schema definition do not need to be included.
* URL for the resource
* URL should not include underscores, and use hyphens instead.
* Parameters which can be passed via the url
* JSON schema definition for the request body data if allowed
* Field names should use snake_case style, not CamelCase or MixedCase
style.
* JSON schema definition for the response body data if any
* Field names should use snake_case style, not CamelCase or MixedCase
style.
* Example use case including typical API samples for both data supplied
by the caller and the response
* Discuss any policy changes, and discuss what things a deployer needs to
think about when defining their policy.
Note that the schema should be defined as restrictively as
possible. Parameters which are required should be marked as such and
only under exceptional circumstances should additional parameters
which are not defined in the schema be permitted (eg
additionaProperties should be False).
Reuse of existing predefined parameter types such as regexps for
passwords and user defined names is highly encouraged.
Security impact
---------------
Describe any potential security impact on the system. Some of the items to
consider include:
* Does this change touch sensitive data such as tokens, keys, or user data?
* Does this change alter the API in a way that may impact security, such as
a new way to access sensitive information or a new way to login?
* Does this change involve cryptography or hashing?
* Does this change require the use of sudo or any elevated privileges?
* Does this change involve using or parsing user-provided data? This could
be directly at the API level or indirectly such as changes to a cache layer.
* Can this change enable a resource exhaustion attack, such as allowing a
single API interaction to consume significant server resources? Some examples
of this include launching subprocesses for each connection, or entity
expansion attacks in XML.
For more detailed guidance, please see the OpenStack Security Guidelines as
a reference (https://wiki.openstack.org/wiki/Security/Guidelines). These
guidelines are a work in progress and are designed to help you identify
security best practices. For further information, feel free to reach out
to the OpenStack Security Group at openstack-security@lists.openstack.org.
Notifications impact
--------------------
Please specify any changes to notifications. Be that an extra notification,
changes to an existing notification, or removing a notification.
Other end user impact
---------------------
Aside from the API, are there other ways a user will interact with this
feature?
* Does this change have an impact on python-venusclient? What does the user
interface there look like?
Performance Impact
------------------
Describe any potential performance impact on the system, for example
how often will new code be called, and is there a major change to the calling
pattern of existing code.
Examples of things to consider here include:
* A periodic task might look like a small addition but if it calls conductor or
another service the load is multiplied by the number of nodes in the system.
* Scheduler filters get called once per host for every instance being created,
so any latency they introduce is linear with the size of the system.
* A small change in a utility function or a commonly used decorator can have a
large impacts on performance.
* Calls which result in a database queries (whether direct or via conductor)
can have a profound impact on performance when called in critical sections of
the code.
* Will the change include any locking, and if so what considerations are there
on holding the lock?
Other deployer impact
---------------------
Discuss things that will affect how you deploy and configure OpenStack
that have not already been mentioned, such as:
* What config options are being added? Should they be more generic than
proposed (for example a flag that other hypervisor drivers might want to
implement as well)? Are the default values ones which will work well in
real deployments?
* Is this a change that takes immediate effect after its merged, or is it
something that has to be explicitly enabled?
* If this change is a new binary, how would it be deployed?
* Please state anything that those doing continuous deployment, or those
upgrading from the previous release, need to be aware of. Also describe
any plans to deprecate configuration values or features. For example, if we
change the directory name that instances are stored in, how do we handle
instance directories created before the change landed? Do we move them? Do
we have a special case in the code? Do we assume that the operator will
recreate all the instances in their cloud?
Developer impact
----------------
Discuss things that will affect other developers working on OpenStack,
such as:
* If the blueprint proposes a change to the driver API, discussion of how
other hypervisors would implement the feature is required.
Implementation
==============
Assignee(s)
-----------
Who is leading the writing of the code? Or is this a blueprint where you're
throwing it out there to see who picks it up?
If more than one person is working on the implementation, please designate the
primary author and contact.
Primary assignee:
<launchpad-id or None>
Other contributors:
<launchpad-id or None>
Work Items
----------
Work items or tasks -- break the feature up into the things that need to be
done to implement it. Those parts might end up being done by different people,
but we're mostly trying to understand the timeline for implementation.
Dependencies
============
* Include specific references to specs and/or blueprints in venus, or in other
projects, that this one either depends on or is related to.
* If this requires functionality of another project that is not currently used
by Venus, document that fact.
* Does this feature require any new library dependencies or code otherwise not
included in OpenStack? Or does it depend on a specific version of library?
Testing
=======
Please discuss the important scenarios needed to test here, as well as
specific edge cases we should be ensuring work correctly. For each
scenario please specify if this requires specialized hardware, a full
OpenStack environment, or can be simulated inside the Venus tree.
Please discuss how the change will be tested. We especially want to know what
tempest tests will be added. It is assumed that unit test coverage will be
added so that doesn't need to be mentioned explicitly, but discussion of why
you think unit tests are sufficient and we don't need to add more tempest
tests would need to be included.
Is this untestable in gate given current limitations (specific hardware /
software configurations available)? If so, are there mitigation plans (3rd
party testing, gate enhancements, etc).
Documentation Impact
====================
Which audiences are affected most by this change, and which documentation
titles on docs.openstack.org should be updated because of this change? Don't
repeat details discussed above, but reference them here in the context of
documentation for multiple audiences. For example, the Operations Guide targets
cloud operators, and the End User Guide would need to be updated if the change
offers a new feature available through the CLI or dashboard. If a config option
changes or is deprecated, note here that the documentation needs to be updated
to reflect this specification's change.
References
==========
Please add any useful references here. You are not required to have any
reference. Moreover, this specification should still make sense when your
references are unavailable. Examples of what you could include are:
* Links to mailing list or IRC discussions
* Links to notes from a summit session
* Links to relevant research, if appropriate
* Related specifications as appropriate (e.g. if it's an EC2 thing, link the
EC2 docs)
* Anything else you feel it is worthwhile to refer to
History
=======
Optional section intended to be used each time the spec is updated to describe
new design, API or any database schema updated. Useful to let reader understand
what's happened along the time.
.. list-table:: Revisions
:header-rows: 1
* - Release Name
- Description
* - Wallaby
- Introduced

392
doc/source/specs/wallaby/implemented/template.rst

@ -0,0 +1,392 @@
..
This work is licensed under a Creative Commons Attribution 3.0 Unported
License.
http://creativecommons.org/licenses/by/3.0/legalcode
==========================================
Example Spec - The title of your blueprint
==========================================
Include the URL of your launchpad blueprint:
https://blueprints.launchpad.net/openstack-venus/+spec/example
Introduction paragraph -- why are we doing anything? A single paragraph of
prose that operators can understand. The title and this first paragraph
should be used as the subject line and body of the commit message
respectively.
Some notes about the venus-spec and blueprint process:
* Not all blueprints need a spec. For more information see
https://docs.openstack.org/developer/venus/blueprints.html#specs
* The aim of this document is first to define the problem we need to solve,
and second agree the overall approach to solve that problem.
* This is not intended to be extensive documentation for a new feature.
For example, there is no need to specify the exact configuration changes,
nor the exact details of any DB model changes. But you should still define
that such changes are required, and be clear on how that will affect
upgrades.
* You should aim to get your spec approved before writing your code.
While you are free to write prototypes and code before getting your spec
approved, its possible that the outcome of the spec review process leads
you towards a fundamentally different solution than you first envisaged.
* But, API changes are held to a much higher level of scrutiny.
As soon as an API change merges, we must assume it could be in production
somewhere, and as such, we then need to support that API change forever.
To avoid getting that wrong, we do want lots of details about API changes
upfront.
Some notes about using this template:
* Your spec should be in ReSTructured text, like this template.
* Please wrap text at 79 columns.
* The filename in the git repository should match the launchpad URL, for
example a URL of: https://blueprints.launchpad.net/openstack-venus/+spec/awesome-thing
should be named awesome-thing.rst
* Please do not delete any of the sections in this template. If you have
nothing to say for a whole section, just write: None
* For help with syntax, see http://sphinx-doc.org/rest.html
* To test out your formatting, build the docs using tox and see the generated
HTML file in doc/build/html/specs/<path_of_your_file>
* If you would like to provide a diagram with your spec, ascii diagrams are
required. http://asciiflow.com/ is a very nice tool to assist with making
ascii diagrams. The reason for this is that the tool used to review specs is
based purely on plain text. Plain text will allow review to proceed without
having to look at additional files which can not be viewed in gerrit. It
will also allow inline feedback on the diagram itself.
* If your specification proposes any changes to the Venus REST API such
as changing parameters which can be returned or accepted, or even
the semantics of what happens when a client calls into the API, then
you should add the APIImpact flag to the commit message. Specifications with
the APIImpact flag can be found with the following query:
https://review.opendev.org/#/q/status:open+project:openstack/venus+message:apiimpact,n,z
Problem description
===================
A detailed description of the problem. What problem is this blueprint
addressing?
Use Cases
---------
What use cases does this address? What impact on actors does this change have?
Ensure you are clear about the actors in each use case: Developer, End User,
Deployer etc.
Proposed change
===============
Here is where you cover the change you propose to make in detail. How do you
propose to solve this problem?
If this is one part of a larger effort make it clear where this piece ends. In
other words, what's the scope of this effort?
At this point, if you would like to just get feedback on if the problem and
proposed change fit in Venus, you can stop here and post this for review to
get preliminary feedback. If so please say:
Posting to get preliminary feedback on the scope of this spec.
Alternatives
------------
What other ways could we do this thing? Why aren't we using those? This doesn't
have to be a full literature review, but it should demonstrate that thought has
been put into why the proposed solution is an appropriate one.
Data model impact
-----------------
Changes which require modifications to the data model often have a wider impact
on the system. The community often has strong opinions on how the data model
should be evolved, from both a functional and performance perspective. It is
therefore important to capture and gain agreement as early as possible on any
proposed changes to the data model.
Questions which need to be addressed by this section include:
* What new data objects and/or database schema changes is this going to
require?
* What database migrations will accompany this change.
* How will the initial set of new data objects be generated, for example if you
need to take into account existing instances, or modify other existing data
describe how that will work.
REST API impact
---------------
Each API method which is either added or changed should have the following
* Specification for the method
* A description of what the method does suitable for use in
user documentation
* Method type (POST/PUT/GET/DELETE)
* Normal http response code(s)
* Expected error http response code(s)
* A description for each possible error code should be included
describing semantic errors which can cause it such as
inconsistent parameters supplied to the method, or when an
instance is not in an appropriate state for the request to
succeed. Errors caused by syntactic problems covered by the JSON
schema definition do not need to be included.
* URL for the resource
* URL should not include underscores, and use hyphens instead.
* Parameters which can be passed via the url
* JSON schema definition for the request body data if allowed
* Field names should use snake_case style, not CamelCase or MixedCase
style.
* JSON schema definition for the response body data if any
* Field names should use snake_case style, not CamelCase or MixedCase
style.
* Example use case including typical API samples for both data supplied
by the caller and the response
* Discuss any policy changes, and discuss what things a deployer needs to
think about when defining their policy.
Note that the schema should be defined as restrictively as
possible. Parameters which are required should be marked as such and
only under exceptional circumstances should additional parameters
which are not defined in the schema be permitted (eg
additionaProperties should be False).
Reuse of existing predefined parameter types such as regexps for
passwords and user defined names is highly encouraged.
Security impact
---------------
Describe any potential security impact on the system. Some of the items to
consider include:
* Does this change touch sensitive data such as tokens, keys, or user data?
* Does this change alter the API in a way that may impact security, such as
a new way to access sensitive information or a new way to login?
* Does this change involve cryptography or hashing?
* Does this change require the use of sudo or any elevated privileges?
* Does this change involve using or parsing user-provided data? This could
be directly at the API level or indirectly such as changes to a cache layer.
* Can this change enable a resource exhaustion attack, such as allowing a
single API interaction to consume significant server resources? Some examples
of this include launching subprocesses for each connection, or entity
expansion attacks in XML.
For more detailed guidance, please see the OpenStack Security Guidelines as
a reference (https://wiki.openstack.org/wiki/Security/Guidelines). These
guidelines are a work in progress and are designed to help you identify
security best practices. For further information, feel free to reach out
to the OpenStack Security Group at openstack-security@lists.openstack.org.
Notifications impact
--------------------
Please specify any changes to notifications. Be that an extra notification,
changes to an existing notification, or removing a notification.
Other end user impact
---------------------
Aside from the API, are there other ways a user will interact with this
feature?
* Does this change have an impact on python-venusclient? What does the user
interface there look like?
Performance Impact
------------------
Describe any potential performance impact on the system, for example
how often will new code be called, and is there a major change to the calling
pattern of existing code.
Examples of things to consider here include:
* A periodic task might look like a small addition but if it calls conductor or
another service the load is multiplied by the number of nodes in the system.
* Scheduler filters get called once per host for every instance being created,
so any latency they introduce is linear with the size of the system.
* A small change in a utility function or a commonly used decorator can have a
large impacts on performance.
* Calls which result in a database queries (whether direct or via conductor)
can have a profound impact on performance when called in critical sections of
the code.
* Will the change include any locking, and if so what considerations are there
on holding the lock?
Other deployer impact
---------------------
Discuss things that will affect how you deploy and configure OpenStack
that have not already been mentioned, such as:
* What config options are being added? Should they be more generic than
proposed (for example a flag that other hypervisor drivers might want to
implement as well)? Are the default values ones which will work well in
real deployments?
* Is this a change that takes immediate effect after its merged, or is it
something that has to be explicitly enabled?
* If this change is a new binary, how would it be deployed?
* Please state anything that those doing continuous deployment, or those
upgrading from the previous release, need to be aware of. Also describe
any plans to deprecate configuration values or features. For example, if we
change the directory name that instances are stored in, how do we handle
instance directories created before the change landed? Do we move them? Do
we have a special case in the code? Do we assume that the operator will
recreate all the instances in their cloud?
Developer impact
----------------
Discuss things that will affect other developers working on OpenStack,
such as:
* If the blueprint proposes a change to the driver API, discussion of how
other hypervisors would implement the feature is required.
Implementation
==============
Assignee(s)
-----------
Who is leading the writing of the code? Or is this a blueprint where you're
throwing it out there to see who picks it up?
If more than one person is working on the implementation, please designate the
primary author and contact.
Primary assignee:
<launchpad-id or None>
Other contributors:
<launchpad-id or None>
Work Items
----------
Work items or tasks -- break the feature up into the things that need to be
done to implement it. Those parts might end up being done by different people,
but we're mostly trying to understand the timeline for implementation.
Dependencies
============
* Include specific references to specs and/or blueprints in venus, or in other
projects, that this one either depends on or is related to.
* If this requires functionality of another project that is not currently used
by Venus, document that fact.
* Does this feature require any new library dependencies or code otherwise not
included in OpenStack? Or does it depend on a specific version of library?
Testing
=======
Please discuss the important scenarios needed to test here, as well as
specific edge cases we should be ensuring work correctly. For each
scenario please specify if this requires specialized hardware, a full
OpenStack environment, or can be simulated inside the Venus tree.
Please discuss how the change will be tested. We especially want to know what
tempest tests will be added. It is assumed that unit test coverage will be
added so that doesn't need to be mentioned explicitly, but discussion of why
you think unit tests are sufficient and we don't need to add more tempest
tests would need to be included.
Is this untestable in gate given current limitations (specific hardware /
software configurations available)? If so, are there mitigation plans (3rd
party testing, gate enhancements, etc).
Documentation Impact
====================
Which audiences are affected most by this change, and which documentation
titles on docs.openstack.org should be updated because of this change? Don't
repeat details discussed above, but reference them here in the context of
documentation for multiple audiences. For example, the Operations Guide targets
cloud operators, and the End User Guide would need to be updated if the change
offers a new feature available through the CLI or dashboard. If a config option
changes or is deprecated, note here that the documentation needs to be updated
to reflect this specification's change.
References
==========
Please add any useful references here. You are not required to have any
reference. Moreover, this specification should still make sense when your
references are unavailable. Examples of what you could include are:
* Links to mailing list or IRC discussions
* Links to notes from a summit session
* Links to relevant research, if appropriate
* Related specifications as appropriate (e.g. if it's an EC2 thing, link the
EC2 docs)
* Anything else you feel it is worthwhile to refer to
History
=======
Optional section intended to be used each time the spec is updated to describe
new design, API or any database schema updated. Useful to let reader understand
what's happened along the time.
.. list-table:: Revisions
:header-rows: 1
* - Release Name
- Description
* - Wallaby
- Introduced

14
setup.cfg

@ -0,0 +1,14 @@
[metadata]
name = venus-specs
summary = Venus Specifications
description-file =
README.rst
author = OpenStack
author-email = openstack-discuss@lists.openstack.org
home-page = http://specs.openstack.org/openstack/venus-specs/
classifier =
Environment :: OpenStack
Intended Audience :: Information Technology
Intended Audience :: System Administrators
License :: OSI Approved :: Apache Software License
Operating System :: POSIX :: Linux

20
setup.py

@ -0,0 +1,20 @@
# Copyright 2020 Inspur
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import setuptools
setuptools.setup(
setup_requires=['pbr'],
pbr=True)

19
specs/__init__.py

@ -0,0 +1,19 @@
# -*- coding: utf-8 -*-
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import pbr.version
__version__ = pbr.version.VersionInfo(
'venus-specs').version_string()

392
specs/wallaby-template.rst