Cleanup py27 support

This repo is now testing only with Python 3, so let's make
a few cleanups:
- Remove python 2.7 stanza from setup.py
- Add requires on python >= 3.6 to setup.cfg so that pypi and pip
  know about the requirement
- Remove obsolete sections from setup.cfg
- Update classifiers
- Update requirements, no need for python_version anymore
- Switch to using sphinx-build; fix build warnings
- Cleanup doc/source/conf.py to remove now obsolete content.
- Use newer openstackdocstheme version
- Raise oslo.utils version, 3.36.5 introduced uuidsentinel.

Change-Id: I8c81e0c1944c239e460befbf886993270902ee04

doc/source/conf.py

@@ -82,7 +82,9 @@ copyright = u'2013-present, OpenStack Foundation'
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
-exclude_patterns = []
+exclude_patterns = [
+    'images/source/README.rst'
+]
 
 # The reST default role (used for this markup: `text`) to use for all documents.
 #default_role = None

doc/source/reference/index.rst

@@ -12,3 +12,10 @@ Internals
 The following is a dive into some of the internals in blazar.
 
 * :doc:`/reference/api-microversion-history`: How blazar uses API microversion.
+
+
+.. toctree::
+   :hidden:
+   :maxdepth: 2
+
+   api-microversion-history

lower-constraints.txt

@@ -46,7 +46,7 @@ mox3==0.25.0
 msgpack==0.5.6
 netaddr==0.7.18
 netifaces==0.10.6
-openstackdocstheme==1.18.1
+openstackdocstheme==1.31.2
 os-api-ref==1.4.0
 os-client-config==1.29.0
 oslo.cache==1.29.0
@@ -62,7 +62,7 @@ oslo.policy==1.30.0
 oslo.serialization==2.18.0
 oslo.service==1.24.0
 oslo.upgradecheck==0.1.0
-oslo.utils==3.33.0
+oslo.utils==3.36.5
 oslotest==3.2.0
 Paste==2.0.3
 PasteDeploy==1.5.2

requirements.txt

@@ -23,7 +23,7 @@ oslo.policy>=1.30.0 # Apache-2.0
 oslo.serialization!=2.19.1,>=2.18.0 # Apache-2.0
 oslo.service!=1.28.1,>=1.24.0 # Apache-2.0
 oslo.upgradecheck>=0.1.0 # Apache-2.0
-oslo.utils>=3.33.0 # Apache-2.0
+oslo.utils>=3.36.5 # Apache-2.0
 python-neutronclient>=6.0.0 # Apache-2.0
 python-novaclient>=9.1.0 # Apache-2.0
 netaddr>=0.7.18 # BSD

setup.cfg

@@ -3,8 +3,11 @@ name = blazar
 summary = Reservation Service for OpenStack clouds
 description-file = README.rst
 license = Apache Software License
+python-requires = >=3.6
 classifiers =
     Programming Language :: Python
+    Programming Language :: Python :: Implementation :: CPython
+    Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
@@ -19,9 +22,6 @@ author = OpenStack
 author_email = openstack-discuss@lists.openstack.org
 home-page = https://docs.openstack.org/blazar/latest/
 
-[global]
-setup-hooks = pbr.hooks.setup_hook
-
 [files]
 packages =
     blazar
@@ -58,11 +58,6 @@ oslo.policy.policies =
 wsgi_scripts =
     blazar-api-wsgi = blazar.api.wsgi_app:init_app
 
-[build_sphinx]
-all_files = 1
-build-dir = doc/build
-source-dir = doc/source
-
 [extract_messages]
 keywords = _
 mapping_file = babel.cfg

setup.py

@@ -13,17 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# THIS FILE IS MANAGED BY THE GLOBAL REQUIREMENTS REPO - DO NOT EDIT
 import setuptools
 
-# In python < 2.7.4, a lazy loading of package `pbr` will break
-# setuptools if some other modules registered functions in `atexit`.
-# solution from: http://bugs.python.org/issue15881#msg170215
-try:
-    import multiprocessing  # noqa
-except ImportError:
-    pass
-
 setuptools.setup(
     setup_requires=['pbr>=2.0.0'],
     pbr=True)

test-requirements.txt

@@ -15,6 +15,6 @@ oslo.context>=2.19.2 # Apache-2.0
 
 # Documentation
 reno>=2.5.0 # Apache-2.0
-sphinx>=1.8.0,!=2.1.0;python_version>='3.4' # BSD
-openstackdocstheme>=1.18.1 # Apache-2.0
+sphinx>=1.8.0,!=2.1.0 # BSD
+openstackdocstheme>=1.31.2 # Apache-2.0
 os-api-ref>=1.4.0 # Apache-2.0

tox.ini

@@ -9,7 +9,8 @@ basepython = python3
 usedevelop = True
 whitelist_externals = rm
 install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master} {opts} {packages}
-deps = -r{toxinidir}/test-requirements.txt
+deps =
+       -r{toxinidir}/test-requirements.txt
        -r{toxinidir}/requirements.txt
 setenv = VIRTUAL_ENV={envdir}
          DISCOVER_DIRECTORY=blazar/tests
@@ -45,7 +46,7 @@ deps =
 commands =
     rm -rf doc/html doc/build
     rm -rf doc/source/apidoc doc/source/api
-    python setup.py build_sphinx
+    sphinx-build -W -b html doc/source doc/build
 
 [testenv:pdf-docs]
 deps = {[testenv:docs]deps}