Add sphinx job for auto-generating docs

Sphinx can be leveraged to auto-generate docs into feature-rich
HTML pages. Docstrings in modules and classes can be easily
auto-injected into documentation to produce high-level
documentation, yet with accompanying code blocks and
necessary docstrings.

This commit introduces the tox job for auto-generating docs,
as well as the foundational logic and documentation pages
(index, HACKING and glossary). While hacking rules are
introduced in HACKING.rst, they are not added in this
commit; that will be done in a follow-up patchset.

Additional documentation will also be included in a series
of future patchsets.

Change-Id: Iacd0e4542ebf481d66ab19dd43014b8d5bcc9e3f

HACKING.rst

@@ -0,0 +1,67 @@
+Deckhand Style Commandments
+===========================
+
+- Step 1: Read the OpenStack Style Commandments
+  http://docs.openstack.org/developer/hacking/
+- Step 2: Read on
+
+Deckhand Specific Commandments
+------------------------------
+
+- [D316] Change assertTrue(isinstance(A, B)) by optimal assert like
+  assertIsInstance(A, B).
+- [D317] Change assertEqual(type(A), B) by optimal assert like
+  assertIsInstance(A, B).
+- [D320] Setting CONF.* attributes directly in tests is forbidden.
+- [D322] Method's default argument shouldn't be mutable.
+- [D324] Ensure that jsonutils.%(fun)s must be used instead of json.%(fun)s
+- [D325] str() and unicode() cannot be used on an exception. Remove use or use six.text_type()
+- [D334] Change assertTrue/False(A in/not in B, message) to the more specific
+  assertIn/NotIn(A, B, message)
+- [D335] Check for usage of deprecated assertRaisesRegexp
+- [D336] Must use a dict comprehension instead of a dict constructor with a sequence of key-value pairs.
+- [D338] Change assertEqual(A in B, True), assertEqual(True, A in B),
+  assertEqual(A in B, False) or assertEqual(False, A in B) to the more specific
+  assertIn/NotIn(A, B)
+- [D339] Check common raise_feature_not_supported() is used for v2.1 HTTPNotImplemented response.
+- [D344] Python 3: do not use dict.iteritems.
+- [D345] Python 3: do not use dict.iterkeys.
+- [D346] Python 3: do not use dict.itervalues.
+- [D350] Policy registration should be in the central location ``deckhand/policies/``.
+- [D352] LOG.warn is deprecated. Enforce use of LOG.warning.
+- [D355] Enforce use of assertTrue/assertFalse
+- [D356] Enforce use of assertIs/assertIsNot
+- [D357] Use oslo_utils.uuidutils or uuidsentinel(in case of test cases) to
+  generate UUID instead of uuid4().
+- [D358] Return must always be followed by a space when returning a value.
+
+Creating Unit Tests
+-------------------
+For every new feature, unit tests should be created that both test and
+(implicitly) document the usage of said feature. If submitting a patch for a
+bug that had no unit test, a new passing unit test should be added. If a
+submitted bug fix does have a unit test, be sure to add a new one that fails
+without the patch and passes with the patch.
+
+Running Tests
+-------------
+The testing system is based on a combination of tox and testr. The canonical
+approach to running tests is to simply run the command ``tox``. This will
+create virtual environments, populate them with dependencies and run all of
+the tests that OpenStack CI systems run. Behind the scenes, tox is running
+``testr run --parallel``, but is set up such that you can supply any additional
+testr arguments that are needed to tox. For example, you can run:
+``tox -- --analyze-isolation`` to cause tox to tell testr to add
+--analyze-isolation to its argument list.
+
+Functional testing leverages gabbi and requires docker as a prerequisite to be
+run. Functional tests can be executing by running the command
+``tox -e functional``.
+
+Building Docs
+-------------
+Normal Sphinx docs can be built via the setuptools ``build_sphinx`` command. To
+do this via ``tox``, simply run ``tox -e docs``,
+which will cause a virtualenv with all of the needed dependencies to be
+created and then inside of the virtualenv, the docs will be created and
+put into doc/build/html.

doc/source/HACKING.rst

@@ -0,0 +1,4 @@
+=======
+Hacking
+=======
+.. include:: ../../HACKING.rst

doc/source/conf.py

@@ -0,0 +1,173 @@
+# -*- coding: utf-8 -*-
+#
+# deckhand documentation build configuration file, created by
+# sphinx-quickstart on Sat Sep 16 03:40:50 2017.
+#
+# This file is execfile()d with the current directory set to its
+# containing dir.
+#
+# Note that not all possible configuration values are present in this
+# autogenerated file.
+#
+# All configuration values have a default; values that are commented out
+# serve to show the default.
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+#
+# import os
+# import sys
+# sys.path.insert(0, os.path.abspath('.'))
+
+
+# -- General configuration ------------------------------------------------
+
+# If your documentation needs a minimal Sphinx version, state it here.
+#
+# needs_sphinx = '1.0'
+
+# 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']
+
+# Add any paths that contain templates here, relative to this directory.
+# templates_path = []
+
+# The suffix(es) of source filenames.
+# You can specify multiple suffix as a list of string:
+#
+# source_suffix = ['.rst', '.md']
+source_suffix = '.rst'
+
+# The master toctree document.
+master_doc = 'index'
+
+# General information about the project.
+project = u'deckhand'
+copyright = u'2017, Deckhand Authors'
+author = u'Deckhand Authors'
+
+# The version info for the project you're documenting, acts as replacement for
+# |version| and |release|, also used in various other places throughout the
+# built documents.
+#
+# The short X.Y version.
+version = u'0.1.0'
+# The full version, including alpha/beta/rc tags.
+release = u'0.1.0'
+
+# The language for content autogenerated by Sphinx. Refer to documentation
+# for a list of supported languages.
+#
+# This is also used if you do content translation via gettext catalogs.
+# Usually you set "language" from the command line for these cases.
+language = None
+
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+# This patterns also effect to html_static_path and html_extra_path
+exclude_patterns = []
+
+# The name of the Pygments (syntax highlighting) style to use.
+pygments_style = 'sphinx'
+
+# If true, `todo` and `todoList` produce output, else they produce nothing.
+todo_include_todos = False
+
+
+# -- Options for HTML output ----------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+#
+import sphinx_rtd_theme
+html_theme = "sphinx_rtd_theme"
+html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
+
+# Theme options are theme-specific and customize the look and feel of a theme
+# further.  For a list of options available for each theme, see the
+# documentation.
+#
+# html_theme_options = {}
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = ['_static']
+
+# Custom sidebar templates, must be a dictionary that maps document names
+# to template names.
+#
+# This is required for the alabaster theme
+# refs: http://alabaster.readthedocs.io/en/latest/installation.html#sidebars
+html_sidebars = {
+    '**': [
+        'about.html',
+        'navigation.html',
+        'relations.html',  # needs 'show_related': True theme option to display
+        'searchbox.html',
+        'donate.html',
+    ]
+}
+
+
+# -- Options for HTMLHelp output ------------------------------------------
+
+# Output file base name for HTML help builder.
+htmlhelp_basename = 'deckhanddoc'
+
+
+# -- Options for LaTeX output ---------------------------------------------
+
+latex_elements = {
+    # The paper size ('letterpaper' or 'a4paper').
+    #
+    # 'papersize': 'letterpaper',
+
+    # The font size ('10pt', '11pt' or '12pt').
+    #
+    # 'pointsize': '10pt',
+
+    # Additional stuff for the LaTeX preamble.
+    #
+    # 'preamble': '',
+
+    # Latex figure (float) alignment
+    #
+    # 'figure_align': 'htbp',
+}
+
+# Grouping the document tree into LaTeX files. List of tuples
+# (source start file, target name, title,
+#  author, documentclass [howto, manual, or own class]).
+latex_documents = [
+    (master_doc, 'deckhand.tex', u'deckhand Documentation',
+     u'Deckhand Authors', 'manual'),
+]
+
+
+# -- Options for manual page output ---------------------------------------
+
+# One entry per manual page. List of tuples
+# (source start file, name, description, authors, manual section).
+man_pages = [
+    (master_doc, 'deckhand', u'deckhand Documentation',
+     [author], 1)
+]
+
+
+# -- Options for Texinfo output -------------------------------------------
+
+# Grouping the document tree into Texinfo files. List of tuples
+# (source start file, target name, title, author,
+#  dir menu entry, description, category)
+texinfo_documents = [
+    (master_doc, 'deckhand', u'deckhand Documentation',
+     author, 'deckhand', 'Document-based configuration storage service.',
+     'Miscellaneous'),
+]
+
+
+

doc/source/glossary.rst

@@ -0,0 +1,49 @@
+========
+Glossary
+========
+
+B
+~
+
+.. glossary::
+
+   barbican
+
+      Code name of the :term:`Key Manager service
+      <Key Manager service (barbican)>`.
+
+   bucket
+
+      Kind of like a Github repository, an ownership class for documents.
+
+D
+~
+
+.. glossary::
+
+   document
+
+      A collection of metadata and data in YAML format. The data document
+      format is modeled loosely after Kubernetes practices. The top level of
+      each document is a dictionary with 3 keys: `schema`, `metadata`, and
+      `data`.
+
+K
+~
+
+.. glossary::
+
+   Key Manager service (barbican)
+
+      The project that produces a secret storage and
+      generation system capable of providing key management for
+      services wishing to enable encryption features.
+
+U
+~
+
+.. glossary::
+
+   UCP
+
+      Acronym for the Undercloud Platform.

doc/source/index.rst

@@ -0,0 +1,43 @@
+..
+      Copyright 2017 AT&T Intellectual Property.
+      All Rights Reserved.
+
+      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.
+
+====================================
+Welcome to Deckhand's documentation!
+====================================
+
+Deckhand is a document-based configuration storage service built with
+auditability and validation in mind. It serves as the back-end storage service
+for UCP.
+
+Deckhand's primary responsibilities include validating and storing YAML
+documents that are layered together to produce finalized documents, containing
+site configuration data, including sensitive data. Secrets can be stored using
+specialized secret storage management services like Barbican and later
+substituted into finalized or "rendered" documents.
+
+The service understands a variety of document formats, the combination of which
+describe the manner in which Deckhand renders finalized documents for
+consumption by other UCP services.
+
+.. toctree::
+   :maxdepth: 2
+
+   HACKING
+
+.. toctree::
+   :maxdepth: 1
+
+   glossary

setup.cfg

@@ -24,5 +24,11 @@ packages =
 oslo.config.opts =
     deckhand.conf = deckhand.conf.opts:list_opts
 
-[pbr]
-warnerrors = True
+[build_sphinx]
+source-dir = doc/source
+build-dir = doc/build
+all_files = 1
+warning-is-error = 1
+
+[upload_sphinx]
+upload-dir = doc/build/html

test-requirements.txt

@@ -14,3 +14,6 @@ os-testr>=0.8.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
 testtools>=1.4.0 # MIT
 bandit>=1.1.0 # Apache-2.0
+sphinx>=1.6.2 # BSD
+gabbi==1.35.1
+sphinx_rtd_theme==0.2.4

tox.ini

@@ -35,7 +35,6 @@ setenv = VIRTUAL_ENV={envdir}
          LANGUAGE=en_US
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-       gabbi==1.35.1
 commands =
   find . -type f -name "*.pyc" -delete
   {toxinidir}/tools/functional-tests.sh '{posargs}'
@@ -67,4 +66,9 @@ commands = flake8 {posargs}
 # [H904] Delay string interpolations at logging calls.
 enable-extensions = H106,H203,H204,H205,H210,H904
 ignore = E121,E122,E123,E124,E125,E126,E127,E128,E129,E131,E251,H405
-exclude =  .venv,.git,.tox,dist,*lib/python*,*egg,build,releasenotes
+exclude =  .venv,.git,.tox,dist,*lib/python*,*egg,build,releasenotes,doc
+
+[testenv:docs]
+commands =
+    rm -rf doc/build
+    python setup.py build_sphinx {posargs}