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""" ``bcfg2-lint`` plugin for :ref:`GroupPatterns
<server-plugins-grouping-grouppatterns>` """
import sys
from Bcfg2.Server.Lint import ServerPlugin
from Bcfg2.Server.Plugins.GroupPatterns import PatternMap
class GroupPatterns(ServerPlugin):
""" ``bcfg2-lint`` plugin to check all given :ref:`GroupPatterns
<server-plugins-grouping-grouppatterns>` patterns for validity.
This is simply done by trying to create a
:class:`Bcfg2.Server.Plugins.GroupPatterns.PatternMap` object for
each pattern, and catching exceptions and presenting them as
``bcfg2-lint`` errors."""
def Run(self):
cfg = self.core.plugins['GroupPatterns'].config
for entry in cfg.xdata.xpath('//GroupPattern'):
groups = [g.text for g in entry.findall('Group')]
self.check(entry, groups, ptype='NamePattern')
self.check(entry, groups, ptype='NameRange')
@classmethod
def Errors(cls):
return {"pattern-fails-to-initialize": "error"}
def check(self, entry, groups, ptype="NamePattern"):
""" Check a single pattern for validity """
if ptype == "NamePattern":
pmap = lambda p: PatternMap(p, None, groups)
else:
pmap = lambda p: PatternMap(None, p, groups)
for el in entry.findall(ptype):
pat = el.text
try:
pmap(pat)
except: # pylint: disable=W0702
err = sys.exc_info()[1]
self.LintError("pattern-fails-to-initialize",
"Failed to initialize %s %s for %s: %s" %
(ptype, pat, entry.get('pattern'), err))
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