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"""Utils class."""
# Copyright 2022 Orange, Deutsche Telekom AG
#
# 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.
import json
import string
import secrets
from typing import Dict, List
from onapsdk.exceptions import ValidationError
def get_parameter_from_yaml(parameter: str, config_file: str):
"""Get the value of a given parameter in file.yaml.
Parameter must be given in string format with dots
Example: general.openstack.image_name
Args:
parameter (str):
config_file (str): configuration yaml file formtatted as string
Raises:
ParameterError: parameter not defined
Returns:
the value of the parameter
"""
value = json.loads(config_file)
# Workaround for the .. within the params in the yaml file
ugly_param = parameter.replace("..", "##")
for element in ugly_param.split("."):
value = value.get(element.replace("##", ".."))
if value is None:
msg = f"{element} in the {parameter} is not in YAML config file."
raise ValidationError(msg)
return value
def get_vf_list_from_tosca_file(model: str) -> List:
"""Get the list of Vfs of a VNF based on the tosca file.
Args:
model (str): the model retrieved from the tosca file at Vnf
instantiation
Returns:
list: a list of Vfs
"""
newlist = []
node_list = get_parameter_from_yaml(
"topology_template.node_templates", model)
for node in node_list:
value = get_parameter_from_yaml(
"topology_template.node_templates." + node + ".type",
model)
if "org.openecomp.resource.vf" in value:
print(node, value)
if node not in newlist:
search_value = str(node).split(" ")[0]
newlist.append(search_value)
return newlist
def get_modules_list_from_tosca_file(model: str) -> Dict:
"""Get the list of modules from tosca file.
Modules are stored on topology_template.groups TOSCA file section.
Args:
model (str): the model retrieved from the tosca file at Vnf
instantiation.
Returns:
dict: a list of modules
"""
return get_parameter_from_yaml(
"topology_template.groups", model
)
def random_string_generator(size=6,
chars=string.ascii_uppercase + string.digits) -> str:
"""Get a random String for VNF.
Args:
size (int): the number of alphanumerical chars for CI
chars (str): alphanumerical characters (ASCII uppercase and digits)
Returns:
str: a sequence of random characters
"""
return ''.join(secrets.choice(chars) for _ in range(size))
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