mirror of
https://github.com/ceph/ceph
synced 2024-12-18 09:25:49 +00:00
460 lines
15 KiB
Python
460 lines
15 KiB
Python
import io
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import contextlib
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import os
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import sys
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from typing import Any, Dict, List, Union
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from docutils.nodes import Node
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from docutils.parsers.rst import directives
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from docutils.statemachine import StringList
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from sphinx import addnodes
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from sphinx.directives import ObjectDescription
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from sphinx.domains.python import PyField
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from sphinx.environment import BuildEnvironment
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from sphinx.locale import _
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from sphinx.util import logging, status_iterator, ws_re
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from sphinx.util.docutils import switch_source_input, SphinxDirective
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from sphinx.util.docfields import Field
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from sphinx.util.nodes import make_id
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import jinja2
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import jinja2.filters
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import yaml
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logger = logging.getLogger(__name__)
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TEMPLATE = '''
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{% if desc %}
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{{ desc | wordwrap(70) | indent(3) }}
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{% endif %}
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:type: ``{{opt.type}}``
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{%- if default is not none %}
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{%- if opt.type == 'size' %}
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:default: ``{{ default | eval_size | iec_size }}``
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{%- elif opt.type == 'secs' %}
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:default: ``{{ default | readable_duration(opt.type) }}``
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{%- elif opt.type in ('uint', 'int', 'float') %}
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:default: ``{{ default | readable_num(opt.type) }}``
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{%- elif opt.type == 'millisecs' %}
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:default: ``{{ default }}`` milliseconds
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{%- elif opt.type == 'bool' %}
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:default: ``{{ default | string | lower }}``
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{%- else %}
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:default: {{ default | literal }}
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{%- endif -%}
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{%- endif %}
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{%- if opt.enum_values %}
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:valid choices:{% for enum_value in opt.enum_values -%}
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{{" -" | indent(18, not loop.first) }} {{ enum_value | literal }}
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{% endfor %}
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{%- endif %}
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{%- if opt.min is defined and opt.max is defined %}
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:allowed range: ``[{{ opt.min }}, {{ opt.max }}]``
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{%- elif opt.min is defined %}
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:min: ``{{ opt.min }}``
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{%- elif opt.max is defined %}
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:max: ``{{ opt.max }}``
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{%- endif %}
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{%- if opt.constraint %}
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:constraint: {{ opt.constraint }}
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{% endif %}
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{%- if opt.policies %}
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:policies: {{ opt.policies }}
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{% endif %}
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{%- if opt.example %}
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:example: {{ opt.example }}
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{%- endif %}
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{%- if opt.see_also %}
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:see also: {{ opt.see_also | map('ref_confval') | join(', ') }}
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{%- endif %}
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{% if opt.note %}
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.. note::
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{{ opt.note }}
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{%- endif -%}
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{%- if opt.warning %}
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.. warning::
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{{ opt.warning }}
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{%- endif %}
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'''
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def eval_size(value) -> int:
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try:
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return int(value)
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except ValueError:
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times = dict(_K=1 << 10,
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_M=1 << 20,
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_G=1 << 30,
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_T=1 << 40)
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for unit, m in times.items():
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if value.endswith(unit):
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return int(value[:-len(unit)]) * m
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raise ValueError(f'unknown value: {value}')
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def readable_duration(value: str, typ: str) -> str:
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try:
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if typ == 'sec':
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v = int(value)
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postfix = 'second' if v == 1 else 'seconds'
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return f'{v} {postfix}'
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elif typ == 'float':
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return str(float(value))
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else:
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return str(int(value))
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except ValueError:
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times = dict(_min=['minute', 'minutes'],
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_hr=['hour', 'hours'],
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_day=['day', 'days'])
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for unit, readables in times.items():
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if value.endswith(unit):
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v = int(value[:-len(unit)])
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postfix = readables[0 if v == 1 else 1]
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return f'{v} {postfix}'
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raise ValueError(f'unknown value: {value}')
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def do_plain_num(value: str, typ: str) -> str:
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if typ == 'float':
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return str(float(value))
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else:
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return str(int(value))
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def iec_size(value: int) -> str:
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if value == 0:
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return '0B'
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units = dict(Ei=60,
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Pi=50,
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Ti=40,
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Gi=30,
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Mi=20,
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Ki=10,
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B=0)
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for unit, bits in units.items():
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m = 1 << bits
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if value % m == 0:
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value //= m
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return f'{value}{unit}'
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raise Exception(f'iec_size() failed to convert {value}')
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def do_fileize_num(value: str, typ: str) -> str:
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v = eval_size(value)
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return iec_size(v)
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def readable_num(value: str, typ: str) -> str:
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e = ValueError()
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for eval_func in [do_plain_num,
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readable_duration,
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do_fileize_num]:
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try:
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return eval_func(value, typ)
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except ValueError as ex:
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e = ex
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raise e
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def literal(name) -> str:
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if name:
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return f'``{name}``'
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else:
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return f'<empty string>'
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def ref_confval(name) -> str:
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return f':confval:`{name}`'
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def jinja_template() -> jinja2.Template:
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env = jinja2.Environment()
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env.filters['eval_size'] = eval_size
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env.filters['iec_size'] = iec_size
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env.filters['readable_duration'] = readable_duration
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env.filters['readable_num'] = readable_num
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env.filters['literal'] = literal
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env.filters['ref_confval'] = ref_confval
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return env.from_string(TEMPLATE)
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FieldValueT = Union[bool, float, int, str]
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class CephModule(SphinxDirective):
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"""
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Directive to name the mgr module for which options are documented.
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"""
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has_content = False
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required_arguments = 1
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optional_arguments = 0
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final_argument_whitespace = False
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def run(self) -> List[Node]:
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module = self.arguments[0].strip()
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if module == 'None':
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self.env.ref_context.pop('ceph:module', None)
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else:
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self.env.ref_context['ceph:module'] = module
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return []
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class CephOption(ObjectDescription):
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"""
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emit option loaded from given command/options/<name>.yaml.in file
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"""
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has_content = True
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required_arguments = 1
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optional_arguments = 0
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final_argument_whitespace = False
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option_spec = {
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'module': directives.unchanged,
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'default': directives.unchanged
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}
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doc_field_types = [
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Field('default',
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label=_('Default'),
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has_arg=False,
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names=('default',)),
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Field('type',
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label=_('Type'),
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has_arg=False,
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names=('type',),
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bodyrolename='class'),
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]
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template = jinja_template()
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opts: Dict[str, Dict[str, FieldValueT]] = {}
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mgr_opts: Dict[str, # module name
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Dict[str, # option name
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Dict[str, # field_name
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FieldValueT]]] = {}
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def _load_yaml(self) -> Dict[str, Dict[str, FieldValueT]]:
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if CephOption.opts:
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return CephOption.opts
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opts = []
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for fn in status_iterator(self.config.ceph_confval_imports,
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'loading options...', 'red',
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len(self.config.ceph_confval_imports),
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self.env.app.verbosity):
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self.env.note_dependency(fn)
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try:
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with open(fn, 'r') as f:
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yaml_in = io.StringIO()
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for line in f:
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if '@' not in line:
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yaml_in.write(line)
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yaml_in.seek(0)
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opts += yaml.safe_load(yaml_in)['options']
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except OSError as e:
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message = f'Unable to open option file "{fn}": {e}'
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raise self.error(message)
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CephOption.opts = dict((opt['name'], opt) for opt in opts)
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return CephOption.opts
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def _normalize_path(self, dirname):
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my_dir = os.path.dirname(os.path.realpath(__file__))
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src_dir = os.path.abspath(os.path.join(my_dir, '../..'))
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return os.path.join(src_dir, dirname)
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def _is_mgr_module(self, dirname, name):
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if not os.path.isdir(os.path.join(dirname, name)):
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return False
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if not os.path.isfile(os.path.join(dirname, name, '__init__.py')):
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return False
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return name not in ['tests']
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@contextlib.contextmanager
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def mocked_modules(self):
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# src/pybind/mgr/tests
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from tests import mock
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mock_imports = ['rados',
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'rbd',
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'cephfs',
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'dateutil',
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'dateutil.parser']
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# make dashboard happy
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mock_imports += ['OpenSSL',
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'jwt',
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'bcrypt',
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'jsonpatch',
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'rook.rook_client',
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'rook.rook_client.ceph',
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'rook.rook_client._helper',
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'cherrypy=3.2.3']
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# make diskprediction_local happy
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mock_imports += ['numpy',
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'scipy']
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# make restful happy
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mock_imports += ['pecan',
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'pecan.rest',
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'pecan.hooks',
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'werkzeug',
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'werkzeug.serving']
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for m in mock_imports:
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args = {}
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parts = m.split('=', 1)
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mocked = parts[0]
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if len(parts) > 1:
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args['__version__'] = parts[1]
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sys.modules[mocked] = mock.Mock(**args)
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try:
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yield
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finally:
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for m in mock_imports:
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mocked = m.split('=', 1)[0]
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sys.modules.pop(mocked)
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def _collect_options_from_module(self, name):
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with self.mocked_modules():
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mgr_mod = __import__(name, globals(), locals(), [], 0)
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# import 'M' from src/pybind/mgr/tests
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from tests import M
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def subclass(x):
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try:
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return issubclass(x, M)
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except TypeError:
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return False
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ms = [c for c in mgr_mod.__dict__.values()
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if subclass(c) and 'Standby' not in c.__name__]
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[m] = ms
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assert isinstance(m.MODULE_OPTIONS, list)
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return m.MODULE_OPTIONS
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def _load_module(self, module) -> Dict[str, Dict[str, FieldValueT]]:
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mgr_opts = CephOption.mgr_opts.get(module)
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if mgr_opts is not None:
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return mgr_opts
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python_path = self.config.ceph_confval_mgr_python_path
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for path in python_path.split(':'):
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sys.path.insert(0, self._normalize_path(path))
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module_path = self.env.config.ceph_confval_mgr_module_path
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module_path = self._normalize_path(module_path)
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sys.path.insert(0, module_path)
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if not self._is_mgr_module(module_path, module):
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raise self.error(f'module "{module}" not found under {module_path}')
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fn = os.path.join(module_path, module, 'module.py')
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if os.path.exists(fn):
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self.env.note_dependency(fn)
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os.environ['UNITTEST'] = 'true'
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opts = self._collect_options_from_module(module)
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CephOption.mgr_opts[module] = dict((opt['name'], opt) for opt in opts)
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return CephOption.mgr_opts[module]
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def _current_module(self) -> str:
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return self.options.get('module',
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self.env.ref_context.get('ceph:module'))
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def _render_option(self, name) -> str:
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cur_module = self._current_module()
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if cur_module:
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try:
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opt = self._load_module(cur_module).get(name)
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except Exception as e:
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message = f'Unable to load module "{cur_module}": {e}'
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raise self.error(message)
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else:
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opt = self._load_yaml().get(name)
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if opt is None:
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raise self.error(f'Option "{name}" not found!')
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if cur_module and 'type' not in opt:
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# the type of module option defaults to 'str'
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opt['type'] = 'str'
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desc = opt.get('fmt_desc') or opt.get('long_desc') or opt.get('desc')
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opt_default = opt.get('default')
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default = self.options.get('default', opt_default)
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try:
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return self.template.render(opt=opt,
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desc=desc,
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default=default)
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except Exception as e:
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message = (f'Unable to render option "{name}": {e}. ',
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f'opt={opt}, desc={desc}, default={default}')
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raise self.error(message)
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def handle_signature(self,
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sig: str,
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signode: addnodes.desc_signature) -> str:
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signode.clear()
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signode += addnodes.desc_name(sig, sig)
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# normalize whitespace like XRefRole does
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name = ws_re.sub(' ', sig)
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cur_module = self._current_module()
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if cur_module:
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return '/'.join(['mgr', cur_module, name])
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else:
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return name
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def transform_content(self, contentnode: addnodes.desc_content) -> None:
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name = self.arguments[0]
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source, lineno = self.get_source_info()
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source = f'{source}:{lineno}:<confval>'
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fields = StringList(self._render_option(name).splitlines() + [''],
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source=source, parent_offset=lineno)
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with switch_source_input(self.state, fields):
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self.state.nested_parse(fields, 0, contentnode)
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def add_target_and_index(self,
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name: str,
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sig: str,
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signode: addnodes.desc_signature) -> None:
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node_id = make_id(self.env, self.state.document, self.objtype, name)
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signode['ids'].append(node_id)
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self.state.document.note_explicit_target(signode)
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entry = f'{name}; configuration option'
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self.indexnode['entries'].append(('pair', entry, node_id, '', None))
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std = self.env.get_domain('std')
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std.note_object(self.objtype, name, node_id, location=signode)
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def _reset_ref_context(app, env, docname):
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env.ref_context.pop('ceph:module', None)
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def setup(app) -> Dict[str, Any]:
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app.add_config_value('ceph_confval_imports',
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default=[],
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rebuild='html',
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types=[str])
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app.add_config_value('ceph_confval_mgr_module_path',
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default=[],
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rebuild='html',
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types=[str])
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app.add_config_value('ceph_confval_mgr_python_path',
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default=[],
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rebuild='',
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types=[str])
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app.add_object_type(
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'confsec',
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'confsec',
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objname='configuration section',
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indextemplate='pair: %s; configuration section',
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doc_field_types=[
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Field(
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'example',
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label=_('Example'),
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has_arg=False,
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)]
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)
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app.add_object_type(
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'confval',
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'confval',
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objname='configuration option',
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)
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app.add_directive_to_domain('std', 'mgr_module', CephModule)
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app.add_directive_to_domain('std', 'confval', CephOption, override=True)
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app.connect('env-purge-doc', _reset_ref_context)
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return {
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'version': 'builtin',
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'parallel_read_safe': True,
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'parallel_write_safe': True,
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}
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