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cdist
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implement configurable default values for parameters 

Signed-off-by: Steven Armstrong <steven@icarus.ethz.ch>
This commit is contained in:
Steven Armstrong 2013-09-04 22:11:42 +02:00
parent 1927d4852a
commit fc40a40ae0
2 changed files with 21 additions and 2 deletions
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17
cdist/core/cdist_type.py
View File

@ -62,6 +62,7 @@ class CdistType(object):
self.__optional_parameters = None
self.__optional_multiple_parameters = None
self.__boolean_parameters = None
self.__parameter_defaults = None
@classmethod
def list_types(cls, base_path):
@ -190,3 +191,19 @@ class CdistType(object):
finally:
self.__boolean_parameters = parameters
return self.__boolean_parameters
@property
def parameter_defaults(self):
if not self.__parameter_defaults:
defaults = {}
try:
defaults_dir = os.path.join(self.absolute_path, "parameter", "default")
for name in os.listdir(defaults_dir):
with open(os.path.join(defaults_dir, name)) as fd:
defaults[name] = fd.read().strip()
except EnvironmentError:
# error ignored
pass
finally:
self.__parameter_defaults = defaults
return self.__parameter_defaults

6
cdist/emulator.py
View File

@ -96,10 +96,12 @@ class Emulator(object):
parser.add_argument(argument, dest=parameter, action='append', required=True)
for parameter in self.cdist_type.optional_parameters:
argument = "--" + parameter
parser.add_argument(argument, dest=parameter, action='store', required=False)
parser.add_argument(argument, dest=parameter, action='store', required=False,
default=self.cdist_type.parameter_defaults.get(parameter, None))
for parameter in self.cdist_type.optional_multiple_parameters:
argument = "--" + parameter
parser.add_argument(argument, dest=parameter, action='append', required=False)
parser.add_argument(argument, dest=parameter, action='append', required=False,
default=self.cdist_type.parameter_defaults.get(parameter, None))
for parameter in self.cdist_type.boolean_parameters:
argument = "--" + parameter
parser.add_argument(argument, dest=parameter, action='store_const', const='')