stack-orchestrator/app/util.py

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# Copyright © 2022, 2023 Cerc
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# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http:#www.gnu.org/licenses/>.
import os.path
import sys
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import ruamel.yaml
from pathlib import Path
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def include_exclude_check(s, include, exclude):
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if include is None and exclude is None:
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return True
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if include is not None:
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include_list = include.split(",")
return s in include_list
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if exclude is not None:
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exclude_list = exclude.split(",")
return s not in exclude_list
def get_stack_file_path(stack):
# In order to be compatible with Python 3.8 we need to use this hack to get the path:
# See: https://stackoverflow.com/questions/25389095/python-get-path-of-root-project-structure
stack_file_path = Path(__file__).absolute().parent.joinpath("data", "stacks", stack, "stack.yml")
return stack_file_path
# Caller can pass either the name of a stack, or a path to a stack file
def get_parsed_stack_config(stack):
stack_file_path = stack if isinstance(stack, os.PathLike) else get_stack_file_path(stack)
try:
with stack_file_path:
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stack_config = get_yaml().load(open(stack_file_path, "r"))
return stack_config
except FileNotFoundError as error:
# We try here to generate a useful diagnostic error
# First check if the stack directory is present
stack_directory = stack_file_path.parent
if os.path.exists(stack_directory):
print(f"Error: stack.yml file is missing from stack: {stack}")
else:
print(f"Error: stack: {stack} does not exist")
print(f"Exiting, error: {error}")
sys.exit(1)
def get_parsed_deployment_spec(spec_file):
spec_file_path = Path(spec_file)
try:
with spec_file_path:
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deploy_spec = get_yaml().load(open(spec_file_path, "r"))
return deploy_spec
except FileNotFoundError as error:
# We try here to generate a useful diagnostic error
print(f"Error: spec file: {spec_file_path} does not exist")
print(f"Exiting, error: {error}")
sys.exit(1)
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def get_yaml():
# See: https://stackoverflow.com/a/45701840/1701505
yaml = ruamel.yaml.YAML()
yaml.preserve_quotes = True
yaml.indent(sequence=3, offset=1)
return yaml
# TODO: this is fragile wrt to the subcommand depth
# See also: https://github.com/pallets/click/issues/108
def global_options(ctx):
return ctx.parent.parent.obj
# TODO: hack
def global_options2(ctx):
return ctx.parent.obj