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# 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.
from jinja2 import pass_context
from jinja2 import Undefined
@pass_context
def customizable(context, val_list, call_type):
# NOTE(mgoddard): Don't try to customise undefined values. There are cases
# where this might happen, for example using a generic template overrides
# file for building multiple image install types and/or distros, where
# variables are not defined in every case.
if isinstance(val_list, Undefined):
return val_list
name = context['image_name'].replace("-", "_") + "_" + call_type + "_"
if name + "override" in context:
return context[name + "override"]
if name + "append" in context:
val_list.extend(context[name + "append"])
if name + "remove" in context:
for removal in context[name + "remove"]:
if removal in val_list:
val_list.remove(removal)
return val_list
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