443 lines
15 KiB
Python
443 lines
15 KiB
Python
# -*- coding: utf-8 -*-
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"""
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Gestion du mini-langage de template
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On travaille sur les fichiers cibles
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"""
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import imp
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import sys
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from shutil import copy
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import logging
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from typing import Dict
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from subprocess import call
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from os import listdir, unlink
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from os.path import basename, join, split, isfile
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from tempfile import mktemp
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from Cheetah import Parser
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# l'encoding du template est déterminé par une regexp (encodingDirectiveRE dans Parser.py)
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# il cherche un ligne qui ressemble à '#encoding: utf-8
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# cette classe simule le module 're' et retourne toujours l'encoding utf-8
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# 6224
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class FakeEncoding():
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def groups(self):
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return ('utf-8',)
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def search(self, *args):
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return self
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Parser.encodingDirectiveRE = FakeEncoding()
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from Cheetah.Template import Template as ChtTemplate
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from Cheetah.NameMapper import NotFound as CheetahNotFound
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from tiramisu import Config
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from .config import patch_dir, templatedir, distrib_dir
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from .error import FileNotFound, TemplateError, TemplateDisabled
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from .i18n import _
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log = logging.getLogger(__name__)
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log.addHandler(logging.NullHandler())
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class IsDefined(object):
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"""
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filtre permettant de ne pas lever d'exception au cas où
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la variable Creole n'est pas définie
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"""
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def __init__(self, context):
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self.context = context
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def __call__(self, varname):
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if '.' in varname:
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splitted_var = varname.split('.')
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if len(splitted_var) != 2:
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msg = _("Group variables must be of type master.slave")
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raise KeyError(msg)
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master, slave = splitted_var
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if master in self.context:
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return slave in self.context[master].slave.keys()
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return False
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else:
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return varname in self.context
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class CreoleGet(object):
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def __init__(self, context):
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self.context = context
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def __call__(self, varname):
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return self.context[varname]
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def __getitem__(self, varname):
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"""For bracket and dotted notation
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"""
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return self.context[varname]
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def __contains__(self, varname):
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"""Check variable existence in context
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"""
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return varname in self.context
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@classmethod
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def cl_compile(kls, *args, **kwargs):
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kwargs['compilerSettings'] = {'directiveStartToken' : '%',
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'cheetahVarStartToken' : '%%',
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'EOLSlurpToken' : '%',
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'PSPStartToken' : 'µ' * 10,
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'PSPEndToken' : 'µ' * 10,
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'commentStartToken' : 'µ' * 10,
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'commentEndToken' : 'µ' * 10,
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'multiLineCommentStartToken' : 'µ' * 10,
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'multiLineCommentEndToken' : 'µ' * 10}
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return kls.old_compile(*args, **kwargs)
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ChtTemplate.old_compile = ChtTemplate.compile
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ChtTemplate.compile = cl_compile
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class CreoleClient:
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def __init__(self,
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config: Config):
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self.config = config
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class CheetahTemplate(ChtTemplate):
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"""classe pour personnaliser et faciliter la construction
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du template Cheetah
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"""
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def __init__(self,
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filename: str,
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context,
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eosfunc: Dict,
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config: Config,
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current_container: str):
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"""Initialize Creole CheetahTemplate
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"""
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ChtTemplate.__init__(self, file=filename,
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searchList=[context, eosfunc, {'is_defined' : IsDefined(context),
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'creole_client' : CreoleClient(config),
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'current_container':CreoleGet(current_container),
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}])
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class CreoleMaster(object):
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def __init__(self, value, slave=None, index=None):
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"""
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On rend la variable itérable pour pouvoir faire:
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for ip in iplist:
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print ip.network
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print ip.netmask
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print ip
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index is used for CreoleLint
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"""
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self._value = value
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if slave is not None:
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self.slave = slave
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else:
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self.slave = {}
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self._index = index
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def __getattr__(self, name):
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"""Get slave variable or attribute of master value.
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If the attribute is a name of a slave variable, return its value.
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Otherwise, returns the requested attribute of master value.
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"""
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if name in self.slave:
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value = self.slave[name]
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if isinstance(value, Exception):
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raise value
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return value
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else:
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return getattr(self._value, name)
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def __getitem__(self, index):
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"""Get a master.slave at requested index.
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"""
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ret = {}
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for key, values in self.slave.items():
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ret[key] = values[index]
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return CreoleMaster(self._value[index], ret, index)
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def __iter__(self):
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"""Iterate over master.slave.
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Return synchronised value of master.slave.
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"""
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for i in range(len(self._value)):
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ret = {}
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for key, values in self.slave.items():
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ret[key] = values[i]
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yield CreoleMaster(self._value[i], ret, i)
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def __len__(self):
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"""Delegate to master value
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"""
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return len(self._value)
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def __repr__(self):
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"""Show CreoleMaster as dictionary.
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The master value is stored under 'value' key.
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The slaves are stored under 'slave' key.
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"""
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return repr({'value': self._value, 'slave': self.slave})
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def __eq__(self, value):
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return value == self._value
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def __ne__(self, value):
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return value != self._value
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def __lt__(self, value):
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return self._value < value
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def __le__(self, value):
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return self._value <= value
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def __gt__(self, value):
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return self._value > value
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def __ge__(self, value):
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return self._value >= value
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def __str__(self):
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"""Delegate to master value
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"""
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return str(self._value)
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def __add__(self, val):
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return self._value.__add__(val)
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def __radd__(self, val):
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return val + self._value
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def __contains__(self, item):
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return item in self._value
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def add_slave(self, name, value):
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"""Add a slave variable
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Minimal check on type and value of the slave in regards to the
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master one.
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@param name: name of the slave variable
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@type name: C{str}
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@param value: value of the slave variable
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"""
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if isinstance(self._value, list):
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if not isinstance(value, list):
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raise TypeError
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elif len(value) != len(self._value):
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raise ValueError(_('length mismatch'))
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new_value = []
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for val in value:
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if isinstance(val, dict):
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new_value.append(ValueError(val['err']))
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else:
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new_value.append(val)
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value = new_value
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elif isinstance(value, list):
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raise TypeError
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self.slave[name] = value
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class CreoleTemplateEngine:
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"""Engine to process Creole cheetah template
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"""
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def __init__(self,
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config: Config,
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eosfunc_file: str):
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self.config = config
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eos = {}
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eosfunc = imp.load_source('eosfunc', eosfunc_file)
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for func in dir(eosfunc):
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if not func.startswith('_'):
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eos[func] = getattr(eosfunc, func)
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self.eosfunc = eos
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self.creole_variables_dict = {}
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self.load_eole_variables(self.config.option('creole'))
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def load_eole_variables(self, optiondescription):
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# remplacement des variables EOLE
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for option in optiondescription.list('all'):
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if option.option.isoptiondescription():
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if option.option.isleadership():
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print('leadership')
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raise Exception('a faire')
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else:
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self.load_eole_variables(option)
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else:
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self.creole_variables_dict[option.option.name()] = option.value.get()
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#if varname.find('.') != -1:
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# #support des groupes
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# mastername, slavename = varname.split('.')
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# if not mastername in self.creole_variables_dict or not \
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# isinstance(self.creole_variables_dict [mastername],
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# CreoleMaster):
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# # Create the master variable
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# if mastername in values:
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# self.creole_variables_dict[mastername] = CreoleMaster(values[mastername])
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# else:
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# #only for CreoleLint
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# self.creole_variables_dict[mastername] = CreoleMaster(value)
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# #test only for CreoleLint
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# if mastername != slavename:
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# self.creole_variables_dict[mastername].add_slave(slavename, value)
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#else:
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# self.creole_variables_dict[varname] = value
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def patch_template(self,
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filename: str):
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"""Apply patch to a template
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"""
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patch_cmd = ['patch', '-d', templatedir, '-N', '-p1']
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patch_no_debug = ['-s', '-r', '-', '--backup-if-mismatch']
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# patches variante + locaux
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for directory in [join(patch_dir, 'variante'), patch_dir]:
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patch_file = join(directory, f'{filename}.patch')
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if isfile(patch_file):
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log.info(_("Patching template '{filename}' with '{patch_file}'"))
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ret = call(patch_cmd + patch_no_debug + ['-i', patch_file])
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if ret:
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patch_cmd_err = ' '.join(patch_cmd + ['-i', patch_file])
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log.error(_(f"Error applying patch: '{patch_file}'\nTo reproduce and fix this error {patch_cmd_err}"))
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copy(filename, templatedir)
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def strip_template_comment(self,
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filename: str):
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"""Strip comment from template
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This apply if filevar has a del_comment attribut
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"""
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# suppression des commentaires si demandé (attribut del_comment)
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if 'del_comment' in filevar and filevar['del_comment'] != '':
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strip_cmd = ['sed', '-i']
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log.info(_("Cleaning file '{0}'").format( filevar['source'] ))
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raise Exception('hu')
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#ret, out, err = pyeole.process.system_out(strip_cmd
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# + ['/^\s*{0}/d ; /^$/d'.format(filevar['del_comment']),
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# filevar['source'] ])
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#if ret != 0:
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# msg = _("Error removing comments '{0}': {1}")
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# raise TemplateError(msg.format(filevar['del_comment'], err))
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def prepare_template(self,
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filename: str):
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"""Prepare template source file
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"""
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log.info(_("Copy template: '{filename}' -> '{templatedir}'"))
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copy(filename, templatedir)
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self.patch_template(filename)
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# self.strip_template_comment(filename)
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def process(self,
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filevar: Dict,
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container: str):
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"""Process a cheetah template
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"""
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# full path of the destination file
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destfilename = join(dest_dir, filevar['source'])
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log.info(_(f"Cheetah processing: '{destfilename}'"))
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try:
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cheetah_template = CheetahTemplate(join(templatedir, filevar['source']),
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self.creole_variables_dict,
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self.eosfunc,
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self.config.config.copy(),
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container)
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data = str(cheetah_template)
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except CheetahNotFound as err:
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varname = err.args[0][13:-1]
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raise TemplateError(_(f"Error: unknown variable used in template {destfilename} : {varname}"))
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except Exception as err:
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raise TemplateError(_(f"Error while instantiating template {destfilename}: {err}"))
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with open(destfilename, 'w') as file_h:
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file_h.write(data)
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def change_properties(self,
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filevar: Dict):
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destfilename = join(dest_dir, filevar['source'])
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#chowncmd = ['chown']
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#chownarg = ''
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chmodcmd = ['chmod']
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chmodarg = ''
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#if 'owner' in filevar and filevar['owner']:
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# chownarg = filevar['owner']
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#else:
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# chownarg = 'root'
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#if 'group' in filevar and filevar['group']:
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# chownarg += ":" + filevar['group']
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#else:
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# chownarg += ':root'
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if 'mode' in filevar and filevar['mode']:
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chmodarg = filevar['mode']
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else:
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chmodarg = '0644'
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#chowncmd.extend( [chownarg, destfilename] )
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chmodcmd.extend([chmodarg, destfilename])
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#log.info(_('Changing properties: {0}').format(' '.join(chowncmd)) )
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#ret = call(chowncmd)
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#if ret:
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# log.error(_('Error changing properties {0}: {1}').format(ret, err) )
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log.info(_('Changing properties: {0}').format(' '.join(chmodcmd)) )
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ret = call(chmodcmd)
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if ret:
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chmod_cmd = ' '.join(chmodcmd)
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log.error(_(f'Error changing properties: {chmodcmd}'))
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def instance_file(self,
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filevar: Dict,
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container: str):
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"""Run templatisation on one file of one container
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"""
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log.info(_("Instantiating file '{filename}'"))
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self.process(filevar,
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container)
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self.change_properties(filevar)
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def instance_files(self,
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container=None):
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"""Run templatisation on all files of all containers
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@param container: name of a container
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@type container: C{str}
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"""
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for template in listdir(distrib_dir):
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self.prepare_template(join(distrib_dir, template))
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for container_obj in self.config.option('containers').list('all'):
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current_container = container_obj.option.doc()
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if container is not None and container != current_container:
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continue
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for fills in container_obj.list('all'):
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if fills.option.name() == 'files':
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for fill_obj in fills.list('all'):
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fill = fill_obj.value.dict()
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filename = fill['source']
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if not isfile(join(distrib_dir, filename)):
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raise FileNotFound(_(f"File {filename} does not exist."))
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print(fill)
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if fill['activate']:
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self.instance_file(fill, current_container)
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else:
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log.debug(_("Instantiation of file '{filename}' disabled"))
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def generate(config: Config,
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eosfunc_file: str,
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container: str=None):
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engine = CreoleTemplateEngine(config,
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eosfunc_file)
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engine.instance_files(container=container)
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