ceph/doc/_ext/ceph_commands.py
Yehuda Sadeh 50ab91473e doc/rgw: fix docs build
Workaround rgw modules conflict, as there are two separate modules named
rgw: src/pybind/rgw, src/pybind/mgr/rgw

Signed-off-by: Yehuda Sadeh <yehuda@redhat.com>
2021-11-30 10:57:14 -08:00

473 lines
14 KiB
Python

import io
import os
import sys
import contextlib
from docutils.parsers.rst import directives
from docutils.parsers.rst import Directive
from jinja2 import Template
from pcpp.preprocessor import Preprocessor
from sphinx.util import logging
from sphinx.util.console import bold
from importlib import reload
logger = logging.getLogger(__name__)
class Flags:
NOFORWARD = (1 << 0)
OBSOLETE = (1 << 1)
DEPRECATED = (1 << 2)
MGR = (1 << 3)
POLL = (1 << 4)
HIDDEN = (1 << 5)
VALS = {
NOFORWARD: 'no_forward',
OBSOLETE: 'obsolete',
DEPRECATED: 'deprecated',
MGR: 'mgr',
POLL: 'poll',
HIDDEN: 'hidden',
}
def __init__(self, fs):
self.fs = fs
def __contains__(self, other):
return other in str(self)
def __str__(self):
keys = Flags.VALS.keys()
es = {Flags.VALS[k] for k in keys if self.fs & k == k}
return ', '.join(sorted(es))
def __bool__(self):
return bool(str(self))
class CmdParam(object):
t = {
'CephInt': 'int',
'CephString': 'str',
'CephChoices': 'str',
'CephPgid': 'str',
'CephOsdName': 'str',
'CephPoolname': 'str',
'CephObjectname': 'str',
'CephUUID': 'str',
'CephEntityAddr': 'str',
'CephIPAddr': 'str',
'CephName': 'str',
'CephBool': 'bool',
'CephFloat': 'float',
'CephFilepath': 'str',
}
bash_example = {
'CephInt': '1',
'CephString': 'string',
'CephChoices': 'choice',
'CephPgid': '0',
'CephOsdName': 'osd.0',
'CephPoolname': 'poolname',
'CephObjectname': 'objectname',
'CephUUID': 'uuid',
'CephEntityAddr': 'entityaddr',
'CephIPAddr': '0.0.0.0',
'CephName': 'name',
'CephBool': 'true',
'CephFloat': '0.0',
'CephFilepath': '/path/to/file',
}
def __init__(self, type, name,
who=None, n=None, req=True, range=None, strings=None,
goodchars=None, positional=True):
self.type = type
self.name = name
self.who = who
self.n = n == 'N'
self.req = req != 'false'
self.range = range.split('|') if range else []
self.strings = strings.split('|') if strings else []
self.goodchars = goodchars
self.positional = positional != 'false'
assert who == None
def help(self):
advanced = []
if self.type != 'CephString':
advanced.append(self.type + ' ')
if self.range:
advanced.append('range= ``{}`` '.format('..'.join(self.range)))
if self.strings:
advanced.append('strings=({}) '.format(' '.join(self.strings)))
if self.goodchars:
advanced.append('goodchars= ``{}`` '.format(self.goodchars))
if self.n:
advanced.append('(can be repeated)')
advanced = advanced or ["(string)"]
return ' '.join(advanced)
def mk_example_value(self):
if self.type == 'CephChoices' and self.strings:
return self.strings[0]
if self.range:
return self.range[0]
return CmdParam.bash_example[self.type]
def mk_bash_example(self, simple):
val = self.mk_example_value()
if self.type == 'CephBool':
return '--' + self.name
if simple:
if self.type == "CephChoices" and self.strings:
return val
elif self.type == "CephString" and self.name != 'who':
return 'my_' + self.name
else:
return CmdParam.bash_example[self.type]
else:
return '--{}={}'.format(self.name, val)
class CmdCommand(object):
def __init__(self, prefix, args, desc,
module=None, perm=None, flags=0, poll=None):
self.prefix = prefix
self.params = sorted([CmdParam(**arg) for arg in args],
key=lambda p: p.req, reverse=True)
self.help = desc
self.module = module
self.perm = perm
self.flags = Flags(flags)
self.needs_overload = False
def is_reasonably_simple(self):
if len(self.params) > 3:
return False
if any(p.n for p in self.params):
return False
return True
def mk_bash_example(self):
simple = self.is_reasonably_simple()
line = ' '.join(['ceph', self.prefix] + [p.mk_bash_example(simple) for p in self.params])
return line
class Sig:
@staticmethod
def _parse_arg_desc(desc):
try:
return dict(kv.split('=', 1) for kv in desc.split(',') if kv)
except ValueError:
return desc
@staticmethod
def parse_cmd(cmd):
parsed = [Sig._parse_arg_desc(s) or s for s in cmd.split()]
prefix = [s for s in parsed if isinstance(s, str)]
params = [s for s in parsed if not isinstance(s, str)]
return ' '.join(prefix), params
@staticmethod
def parse_args(args):
return [Sig._parse_arg_desc(arg) for arg in args.split()]
TEMPLATE = '''
{%- set punct_char = '-' -%}
{# add a header if we have multiple commands in this section #}
{% if commands | length > 1 %}
{{ section }}
{{ section | length * '-' }}
{# and demote the subsection #}
{% set punct_char = '^' %}
{% endif %}
{% for command in commands %}
{{ command.prefix }}
{{ command.prefix | length * punct_char }}
{{ command.help | wordwrap(70) }}
:Example command:
.. code-block:: bash
{{ command.mk_bash_example() | wordwrap(70) | indent(9) }}
{%- if command.params %}
:Parameters:{% for param in command.params -%}
{{" -" | indent(12, not loop.first) }} **{% if param.positional %}{{param.name}}{% else %}--{{param.name}}{% endif %}**: {{ param.help() }}
{% endfor %}
{% endif %}
:Ceph Module: {{ command.module }}
:Required Permissions: ``{{ command.perm }}``
{%- if command.flags %}
:Command Flags: ``{{ command.flags }}``
{% endif %}
{% endfor %}
'''
def group_by_prefix(commands):
last_prefix = None
grouped = []
for cmd in commands:
prefix = cmd.prefix.split(' ', 1)[0]
if prefix == last_prefix:
grouped.append(cmd)
elif last_prefix is None:
last_prefix = prefix
grouped = [cmd]
else:
yield last_prefix, grouped
last_prefix = prefix
grouped = [cmd]
assert grouped
yield last_prefix, grouped
def render_commands(commands):
rendered = io.StringIO()
for section, grouped in group_by_prefix(commands):
logger.debug('rendering commands: %s: %d', section, len(grouped))
rendered.write(Template(TEMPLATE).render(
section=section,
commands=grouped))
return rendered.getvalue().split('\n')
class CephMgrCommands(Directive):
"""
extracts commands from specified mgr modules
"""
has_content = True
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = False
option_spec = {'python_path': directives.unchanged}
def _normalize_path(self, dirname):
my_dir = os.path.dirname(os.path.realpath(__file__))
src_dir = os.path.abspath(os.path.join(my_dir, '../..'))
return os.path.join(src_dir, dirname)
def _is_mgr_module(self, dirname, name):
if not os.path.isdir(os.path.join(dirname, name)):
return False
if not os.path.isfile(os.path.join(dirname, name, '__init__.py')):
return False
return name not in ['tests']
@contextlib.contextmanager
def mocked_modules(self):
# src/pybind/mgr/tests
from tests import mock
mock_imports = ['rados',
'rbd',
'cephfs',
'dateutil',
'dateutil.parser']
# make dashboard happy
mock_imports += ['OpenSSL',
'jwt',
'bcrypt',
'jsonpatch',
'rook.rook_client',
'rook.rook_client.ceph',
'rook.rook_client._helper',
'cherrypy=3.2.3']
# make diskprediction_local happy
mock_imports += ['numpy',
'scipy']
# make restful happy
mock_imports += ['pecan',
'pecan.rest',
'pecan.hooks',
'werkzeug',
'werkzeug.serving']
for m in mock_imports:
args = {}
parts = m.split('=', 1)
mocked = parts[0]
if len(parts) > 1:
args['__version__'] = parts[1]
sys.modules[mocked] = mock.Mock(**args)
try:
yield
finally:
for m in mock_imports:
mocked = m.split('=', 1)[0]
sys.modules.pop(mocked)
def _collect_module_commands(self, name):
with self.mocked_modules():
logger.info(bold(f"loading mgr module '{name}'..."))
mgr_mod = __import__(name, globals(), locals(), [], 0)
reload(mgr_mod)
from tests import M
def subclass(x):
try:
return issubclass(x, M)
except TypeError:
return False
ms = [c for c in mgr_mod.__dict__.values()
if subclass(c) and 'Standby' not in c.__name__]
[m] = ms
assert isinstance(m.COMMANDS, list)
return m.COMMANDS
def _normalize_command(self, command):
if 'handler' in command:
del command['handler']
if 'cmd' in command:
command['prefix'], command['args'] = Sig.parse_cmd(command['cmd'])
del command['cmd']
else:
command['args'] = Sig.parse_args(command['args'])
command['flags'] = (1 << 3)
command['module'] = 'mgr'
return command
def _render_cmds(self, commands):
lines = render_commands(commands)
assert lines
lineno = self.lineno - self.state_machine.input_offset - 1
source = self.state_machine.input_lines.source(lineno)
self.state_machine.insert_input(lines, source)
def run(self):
module_path = self._normalize_path(self.arguments[0])
sys.path.insert(0, module_path)
for path in self.options.get('python_path', '').split(':'):
sys.path.insert(0, self._normalize_path(path))
os.environ['UNITTEST'] = 'true'
modules = [name for name in os.listdir(module_path)
if self._is_mgr_module(module_path, name)]
commands = sum([self._collect_module_commands(name) for name in modules], [])
cmds = [CmdCommand(**self._normalize_command(c)) for c in commands]
cmds = [cmd for cmd in cmds if 'hidden' not in cmd.flags]
cmds = sorted(cmds, key=lambda cmd: cmd.prefix)
self._render_cmds(cmds)
orig_rgw_mod = sys.modules['pybind_rgw_mod']
sys.modules['rgw'] = orig_rgw_mod
return []
class MyProcessor(Preprocessor):
def __init__(self):
super().__init__()
self.cmds = []
self.undef('__DATE__')
self.undef('__TIME__')
self.expand_linemacro = False
self.expand_filemacro = False
self.expand_countermacro = False
self.line_directive = '#line'
self.define("__PCPP_VERSION__ " + '')
self.define("__PCPP_ALWAYS_FALSE__ 0")
self.define("__PCPP_ALWAYS_TRUE__ 1")
def eval(self, src):
_cmds = []
NONE = 0
NOFORWARD = (1 << 0)
OBSOLETE = (1 << 1)
DEPRECATED = (1 << 2)
MGR = (1 << 3)
POLL = (1 << 4)
HIDDEN = (1 << 5)
TELL = (1 << 6)
def FLAG(a):
return a
def COMMAND(cmd, desc, module, perm):
_cmds.append({
'cmd': cmd,
'desc': desc,
'module': module,
'perm': perm
})
def COMMAND_WITH_FLAG(cmd, desc, module, perm, flag):
_cmds.append({
'cmd': cmd,
'desc': desc,
'module': module,
'perm': perm,
'flags': flag
})
self.parse(src)
out = io.StringIO()
self.write(out)
out.seek(0)
s = out.read()
exec(s, globals(), locals())
return _cmds
class CephMonCommands(Directive):
"""
extracts commands from specified header file
"""
has_content = True
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = True
def _src_dir(self):
my_dir = os.path.dirname(os.path.realpath(__file__))
return os.path.abspath(os.path.join(my_dir, '../..'))
def _parse_headers(self, headers):
src_dir = self._src_dir()
src = '\n'.join(f'#include "{src_dir}/{header}"' for header in headers)
return MyProcessor().eval(src)
def _normalize_command(self, command):
if 'handler' in command:
del command['handler']
command['prefix'], command['args'] = Sig.parse_cmd(command['cmd'])
del command['cmd']
return command
def _render_cmds(self, commands):
lines = render_commands(commands)
assert lines
lineno = self.lineno - self.state_machine.input_offset - 1
source = self.state_machine.input_lines.source(lineno)
self.state_machine.insert_input(lines, source)
def run(self):
headers = self.arguments[0].split()
commands = self._parse_headers(headers)
cmds = [CmdCommand(**self._normalize_command(c)) for c in commands]
cmds = [cmd for cmd in cmds if 'hidden' not in cmd.flags]
cmds = sorted(cmds, key=lambda cmd: cmd.prefix)
self._render_cmds(cmds)
return []
def setup(app):
app.add_directive("ceph-mgr-commands", CephMgrCommands)
app.add_directive("ceph-mon-commands", CephMonCommands)
return {
'version': '0.1',
'parallel_read_safe': True,
'parallel_write_safe': True,
}