rally/doc/ext/plugin_reference.py
Andrey Kurilin 8eaed0befe [docs] Use proper reference for openstack plugins
* add rally-openstack package to doc requirements
* fix linking for plugins (with hardcoding openstack plugins)
* move importing of osclients to inner methods

Change-Id: Ifb851c61de01e4140c23b447b5e0d55c1e76fb1c
2018-04-19 14:52:51 +00:00

394 lines
16 KiB
Python

# Copyright 2015: Mirantis Inc.
# 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.
import copy
from docutils.parsers import rst
import json
import re
from rally.common.plugin import discover
from rally.common.plugin import plugin
from rally.common import validation
from rally import plugins
import utils
JSON_SCHEMA_TYPES_MAP = {"boolean": "bool",
"string": "str",
"number": "float",
"integer": "int",
"array": "list",
"object": "dict"}
def process_jsonschema(schema):
"""Process jsonschema and make it looks like regular docstring."""
if not schema:
# nothing to parse
return
if "type" in schema:
# str
if schema["type"] == "string":
doc = schema.get("description", "")
if "pattern" in schema:
doc += ("\n\nShould follow next pattern: %s." %
schema["pattern"])
return {"doc": doc, "type": "str"}
# int or float
elif schema["type"] in ("integer", "number"):
doc = schema.get("description", "")
if "minimum" in schema:
doc += "\n\nMin value: %s." % schema["minimum"]
if "maximum" in schema:
doc += "\n\nMax value: %s." % schema["maximum"]
return {"doc": doc, "type": JSON_SCHEMA_TYPES_MAP[schema["type"]]}
# bool or null
elif schema["type"] in ("boolean", "null"):
return {"doc": schema.get("description", ""),
"type": "bool" if schema["type"] == "boolean" else "null"}
# list
elif schema["type"] == "array":
info = {"doc": schema.get("description", ""),
"type": "list"}
if "items" in schema:
if info["doc"]:
info["doc"] += "\n\n"
info["doc"] += ("Elements of the list should follow format(s) "
"described below:\n\n")
items = schema["items"]
itype = None
if "type" in items:
itype = JSON_SCHEMA_TYPES_MAP.get(items["type"],
items["type"])
info["doc"] += "- Type: %s. " % itype
if "description" in items:
# add indention
desc = items["description"].split("\n")
info["doc"] += "\n ".join(desc)
new_schema = copy.copy(items)
new_schema.pop("description", None)
new_schema = json.dumps(new_schema, indent=4)
new_schema = "\n ".join(
new_schema.split("\n"))
info["doc"] += ("\n Format:\n\n"
" .. code-block:: json\n\n"
" %s\n" % new_schema)
return info
elif isinstance(schema["type"], list):
# it can be too complicated for parsing... do not do it deeply
return {"doc": schema.get("description", ""),
"type": "/".join(schema["type"])}
# dict
elif schema["type"] == "object":
info = {"doc": schema.get("description", ""),
"type": "dict",
"parameters": []}
required_parameters = schema.get("required", [])
if "properties" in schema:
for name in schema["properties"]:
if isinstance(schema["properties"][name], str):
pinfo = {"name": name,
"type": schema["properties"][name],
"doc": ""}
else:
pinfo = process_jsonschema(schema["properties"][name])
if name in required_parameters:
pinfo["required"] = True
pinfo["name"] = name
info["parameters"].append(pinfo)
elif "patternProperties" in schema:
info.pop("parameters", None)
info["patternProperties"] = []
for k, v in schema["patternProperties"].items():
info["patternProperties"].append(process_jsonschema(v))
info["patternProperties"][-1]["name"] = k
info["patternProperties"][-1]["type"] = "str"
elif (not (set(schema.keys()) - {"type", "description", "$schema",
"additionalProperties"})):
# it is ok, schema accepts any object. nothing to add more
pass
elif "oneOf" in schema or "anyOf" in schema:
# Example:
# SCHEMA = {"type": "object", "$schema": consts.JSON_SCHEMA,
# "oneOf": [{"properties": {"foo": {"type": "string"}}
# "required": ["foo"],
# "additionalProperties": False},
# {"properties": {"bar": {"type": "string"}}
# "required": ["bar"],
# "additionalProperties": False},
#
schema_key = "oneOf" if "oneOf" in schema else "anyOf"
schema_value = copy.deepcopy(schema.get(schema_key))
for item in schema_value:
for k, v in schema.items():
if k not in (schema_key, "description"):
item[k] = v
return {
"doc": schema.get("description", ""),
"type": "dict",
schema_key: [
process_jsonschema(item) for item in schema_value]
}
else:
raise Exception("Failed to parse jsonschema: %s" % schema)
if "definitions" in schema:
info["definitions"] = schema["definitions"]
return info
else:
raise Exception("Failed to parse jsonschema: %s" % schema)
# enum
elif "enum" in schema:
doc = schema.get("description", "")
doc += "\nSet of expected values: '%s'." % ("', '".join(
[e or "None" for e in schema["enum"]]))
return {"doc": doc}
elif "anyOf" in schema:
return {"doc": schema.get("description", ""),
"anyOf": [process_jsonschema(i) for i in schema["anyOf"]]}
elif "oneOf" in schema:
return {"doc": schema.get("description", ""),
"oneOf": [process_jsonschema(i) for i in schema["oneOf"]]}
elif "$ref" in schema:
return {"doc": schema.get("description", "n/a"),
"ref": schema["$ref"]}
else:
raise Exception("Failed to parse jsonschema: %s" % schema)
CATEGORIES = {
"Common": ["OS Client"],
"Deployment": ["Engine", "Provider Factory"],
"Task Component": ["Chart", "Context", "Hook Action", "Hook Trigger",
"Resource Type", "Task Exporter", "SLA", "Scenario",
"Scenario Runner", "Trigger", "Validator"],
"Verification Component": ["Verifier Context", "Verification Reporter",
"Verifier Manager"]
}
# NOTE(andreykurilin): several bases do not have docstings at all, so it is
# redundant to display them
IGNORED_BASES = ["Resource Type", "OS Client", "Exporters"]
class PluginsReferenceDirective(rst.Directive):
optional_arguments = 1
option_spec = {"base_cls": str}
def _make_arg_items(self, items, ref_prefix, description=None,
title="Parameters"):
terms = []
for item in items:
iname = item.get("name", "") or item.pop("type")
if "type" in item:
iname += " (%s)" % item["type"]
terms.append((iname, [item["doc"]]))
return utils.make_definitions(title=title,
ref_prefix=ref_prefix,
terms=terms,
descriptions=description)
def _make_plugin_section(self, plugin_cls, base_name=None):
section_name = plugin_cls.get_name()
if base_name:
section_name += " [%s]" % base_name
section_obj = utils.section(section_name)
info = plugin_cls.get_info()
if info["title"]:
section_obj.append(utils.paragraph(info["title"]))
if info["description"]:
section_obj.extend(utils.parse_text(info["description"]))
if info["platform"]:
section_obj.append(utils.paragraph(
"**Platform**: %s" % info["platform"]))
if base_name:
ref_prefix = "%s-%s-" % (base_name, plugin_cls.get_name())
else:
ref_prefix = "%s-" % plugin_cls.get_name()
if info["parameters"]:
section_obj.extend(self._make_arg_items(info["parameters"],
ref_prefix))
if info["returns"]:
section_obj.extend(utils.parse_text(
"**Returns**:\n%s" % info["returns"]))
if info["schema"]:
schema = process_jsonschema(info["schema"])
if "type" in schema:
if "parameters" in schema:
section_obj.extend(self._make_arg_items(
items=schema["parameters"],
ref_prefix=ref_prefix))
elif "patternProperties" in schema:
section_obj.extend(self._make_arg_items(
items=schema["patternProperties"],
ref_prefix=ref_prefix,
description=["*Dictionary is expected. Keys should "
"follow pattern(s) described bellow.*"]))
elif "oneOf" in schema:
section_obj.append(utils.note(
"One of the following groups of "
"parameters should be provided."))
for i, oneOf in enumerate(schema["oneOf"], 1):
description = None
if oneOf.get("doc", None):
description = [oneOf["doc"]]
section_obj.extend(self._make_arg_items(
items=oneOf["parameters"],
ref_prefix=ref_prefix,
title="Option %s of parameters" % i,
description=description))
else:
section_obj.extend(self._make_arg_items(
items=[schema], ref_prefix=ref_prefix))
else:
raise Exception("Failed to display provided schema: %s" %
info["schema"])
if issubclass(plugin_cls, validation.ValidatablePluginMixin):
validators = plugin_cls._meta_get("validators", default=[])
platforms = [kwargs for name, args, kwargs in validators
if name == "required_platform"]
if platforms:
section_obj.append(
utils.paragraph("**Requires platform(s)**:"))
section = ""
for p in platforms:
section += "* %s" % p["platform"]
admin_msg = "credentials for admin user"
user_msg = ("regular users (temporary users can be created"
" via the 'users' context if admin user is "
"specified for the platform)")
if p.get("admin", False) and p.get("users", False):
section += " with %s and %s." % (admin_msg, user_msg)
elif p.get("admin", False):
section += " with %s." % admin_msg
elif p.get("users", False):
section += " with %s." % user_msg
section += "\n"
section_obj.extend(utils.parse_text(section))
filename = info["module"].replace(".", "/")
if filename.startswith("rally/"):
project = "rally"
elif filename.startswith("rally_openstack/"):
project = "rally-openstack"
else:
# WTF is it?!
return None
ref = ("https://github.com/openstack/%s/blob/master/%s.py"
% (project, filename))
section_obj.extend(utils.parse_text("**Module**:\n`%s`__\n\n__ %s"
% (info["module"], ref)))
return section_obj
def _make_plugin_base_section(self, base_cls, base_name=None):
if base_name:
title = ("%ss" % base_name if base_name[-1] != "y"
else "%sies" % base_name[:-1])
subcategory_obj = utils.subcategory(title)
else:
subcategory_obj = []
for p in sorted(base_cls.get_all(), key=lambda o: o.get_name()):
# do not display hidden contexts
if p._meta_get("hidden", False):
continue
subcategory_obj.append(self._make_plugin_section(p, base_name))
return subcategory_obj
@staticmethod
def _parse_class_name(cls):
name = ""
for word in re.split(r"([A-Z][a-z]*)", cls.__name__):
if word:
if len(word) > 1 and name:
name += " "
name += word
return name
@plugins.ensure_plugins_are_loaded
def _get_all_plugins_bases(self):
"""Return grouped and sorted all plugins bases."""
bases = []
bases_names = []
for p in discover.itersubclasses(plugin.Plugin):
base_ref = getattr(p, "base_ref", None)
if base_ref == p:
name = self._parse_class_name(p)
if name in bases_names:
raise Exception("Two base classes with same name '%s' are "
"detected." % name)
bases_names.append(name)
category_of_base = "Common"
for cname, cbases in CATEGORIES.items():
if name in cbases:
category_of_base = cname
bases.append((category_of_base, name, p))
return sorted(bases)
def run(self):
bases = self._get_all_plugins_bases()
if "base_cls" in self.options:
for _category_name, base_name, base_cls in bases:
if base_name == self.options["base_cls"]:
return self._make_plugin_base_section(base_cls)
raise Exception("Failed to generate plugins reference for '%s'"
" plugin base." % self.options["base_cls"])
categories = {}
for category_name, base_name, base_cls in bases:
# FIXME(andreykurilin): do not ignore anything
if base_name in IGNORED_BASES:
continue
if category_name not in categories:
categories[category_name] = utils.category(category_name)
category_of_base = categories[category_name]
category_of_base.append(self._make_plugin_base_section(base_cls,
base_name))
return [content for _name, content in sorted(categories.items())]
def setup(app):
plugins.load()
app.add_directive("generate_plugin_reference", PluginsReferenceDirective)