openstacksdk/doc/source/enforcer.py
Brian Curtin ad3a0fcf44 Enforce inclusion of pulic proxy methods in docs
Per the approach on https://review.openstack.org/#/c/428276/, and in
general even outside of that change, we should have more strict
enforcement on the inclusion of our public proxy APIs in the
documentation. This tool runs as a part of our doc build, via `tox -e
docs`, and collects all of the public proxy methods and then compares
that list to the list of methods that were produced by Sphinx.

For right now this will only output warnings, but we should eventually
turn on enforcer_warnings_as_errors in doc/source/conf.py so that we can
truly enforce these things. If you don't document something, it'll kill
the doc build and then kill the docs gate job, so undocumented code
won't be accepted. We'll need to leave it off for the time
being as we transition into it.

Change-Id: I96743de7e0790da98d758415e084a26a92aa3c70
2017-02-10 09:24:39 -05:00

114 lines
4.0 KiB
Python

import importlib
import os
from bs4 import BeautifulSoup
from sphinx import errors
# NOTE: We do this because I can't find any way to pass "-v"
# into sphinx-build through pbr...
DEBUG = True if os.getenv("ENFORCER_DEBUG") else False
WRITTEN_METHODS = set()
class EnforcementError(errors.SphinxError):
"""A mismatch between what exists and what's documented"""
category = "Enforcer"
def get_proxy_methods():
"""Return a set of public names on all proxies"""
names = ["openstack.bare_metal.v1._proxy",
"openstack.block_store.v2._proxy",
"openstack.cluster.v1._proxy",
"openstack.compute.v2._proxy",
"openstack.database.v1._proxy",
"openstack.identity.v2._proxy",
"openstack.identity.v3._proxy",
"openstack.image.v1._proxy",
"openstack.image.v2._proxy",
"openstack.key_manager.v1._proxy",
"openstack.message.v1._proxy",
"openstack.message.v2._proxy",
"openstack.metric.v1._proxy",
"openstack.network.v2._proxy",
"openstack.object_store.v1._proxy",
"openstack.orchestration.v1._proxy",
"openstack.telemetry.v2._proxy",
"openstack.telemetry.alarm.v2._proxy",
"openstack.workflow.v2._proxy"]
modules = (importlib.import_module(name) for name in names)
methods = set()
for module in modules:
# We're not going to use the Proxy for anything other than a `dir`
# so just pass a dummy value so we can create the instance.
instance = module.Proxy("")
# We only document public names
names = [name for name in dir(instance) if not name.startswith("_")]
good_names = [module.__name__ + ".Proxy." + name for name in names]
methods.update(good_names)
return methods
def page_context(app, pagename, templatename, context, doctree):
"""Handle html-page-context-event
This event is emitted once the builder has the contents to create
an HTML page, but before the template is rendered. This is the point
where we'll know what documentation is going to be written, so
gather all of the method names that are about to be included
so we can check which ones were or were not processed earlier
by autodoc.
"""
if "users/proxies" in pagename:
soup = BeautifulSoup(context["body"], "html.parser")
dts = soup.find_all("dt")
ids = [dt.get("id") for dt in dts]
written = 0
for id in ids:
if id is not None and "_proxy.Proxy" in id:
WRITTEN_METHODS.add(id)
written += 1
if DEBUG:
app.info("ENFORCER: Wrote %d proxy methods for %s" % (
written, pagename))
def build_finished(app, exception):
"""Handle build-finished event
This event is emitted once the builder has written all of the output.
At this point we just compare what we know was written to what we know
exists within the modules and share the results.
When enforcer_warnings_as_errors=True in conf.py, this method
will raise EnforcementError on any failures in order to signal failure.
"""
all_methods = get_proxy_methods()
app.info("ENFORCER: %d proxy methods exist" % len(all_methods))
app.info("ENFORCER: %d proxy methods written" % len(WRITTEN_METHODS))
missing = all_methods - WRITTEN_METHODS
missing_count = len(missing)
app.info("ENFORCER: Found %d missing proxy methods "
"in the output" % missing_count)
for name in sorted(missing):
app.warn("ENFORCER: %s was not included in the output" % name)
if app.config.enforcer_warnings_as_errors:
raise EnforcementError(
"There are %d undocumented proxy methods" % missing_count)
def setup(app):
app.add_config_value("enforcer_warnings_as_errors", False, "env")
app.connect("html-page-context", page_context)
app.connect("build-finished", build_finished)