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matrix-spec/scripts/templating/batesian/units.py

60 lines
1.9 KiB
Python

# Copyright 2016 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Parent class for writing units."""
import inspect
class Units(object):
@staticmethod
def prop(obj, path):
# Helper method to extract nested property values
nested_keys = path.split("/")
val = obj
for key in nested_keys:
val = val.get(key, {})
return val
def __init__(self, debug=False, substitutions=None):
self.debug = debug
if substitutions is None:
self.substitutions = {}
else:
self.substitutions = substitutions
def log(self, text):
if self.debug:
func_name = ""
trace = inspect.stack()
if len(trace) > 1 and len(trace[1]) > 2:
func_name = trace[1][3] + ":"
print("batesian:units:%s %s" % (func_name, text))
def get_units(self, debug=False):
unit_list = inspect.getmembers(self, predicate=inspect.ismethod)
unit_dict = {}
for (func_name, func) in unit_list:
if not func_name.startswith("load_"):
continue
unit_key = func_name[len("load_"):]
if len(inspect.getargs(func.__code__).args) > 1:
unit_dict[unit_key] = func(self.substitutions)
else:
unit_dict[unit_key] = func()
self.log("Generated unit '%s'" % unit_key)
return unit_dict