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Add ceilometer-powervm spec dir and template

Add a specs directory structure for ceilometer-powervm and add in a
base spec template for creating new ceilometer-powervm specs

Change-Id: Ic07ebdf0dcdb26b4e6c76e1c45dc8bdb28d0d0ad
tags/3.0.0.0b1
adreznec 3 jaren geleden
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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/ceilometer-powervm/+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 using this template:

* 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.

* 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.

* 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: https://blueprints.launchpad.net/ceilometer-powervm/+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.


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?


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.


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 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.


End user impact
---------------

How would the end user be impacted by this change? The "End User" is defined
as the users of the deployed cloud?


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 small change in a utility function or a commonly used decorator can have a
large impacts on performance.

* Will the change include any locking, and if so what considerations are there
on holding the lock?


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? 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.


Developer impact
----------------

Discuss things that will affect other developers working on the driver or
OpenStack in general.


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/blueprints in ceilometer-powervm, or
in other projects, that this one either depends on or is related to. For
example, a dependency on pypowervm changes should be documented here.

* If this requires functionality of another project that is not currently used
by ceilometer-powervm 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, etc.

Please discuss how the change will be tested. We especially want to know what
functional tests will be added. It is assumed that unit test coverage will be
added so that doesn't need to be mentioned explicitly.


Documentation Impact
====================

Which audiences are affected most by this change, and which documentation
titles 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.


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

* 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.

.. list-table:: Revisions
:header-rows: 1

* - Release Name
- Description
* - Mitaka
- Introduced

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