108 lines
2.9 KiB
Python
108 lines
2.9 KiB
Python
import sys
|
|
from os import environ
|
|
from pathlib import Path
|
|
from typing import Any, Dict, Optional
|
|
|
|
from loguru import logger
|
|
|
|
# pylint: disable=no-name-in-module
|
|
from pydantic import BaseModel, ValidationError
|
|
from pydantic.fields import ModelField
|
|
from yaml import YAMLError, safe_load
|
|
|
|
DEFAULT_ENV_PREFIX = "LIBRETIME"
|
|
DEFAULT_CONFIG_FILEPATH = Path("/etc/libretime/config.yml")
|
|
|
|
# pylint: disable=too-few-public-methods
|
|
class BaseConfig(BaseModel):
|
|
"""
|
|
Read and validate the configuration from 'filepath' and os environment.
|
|
|
|
:param filepath: yaml configuration file to read from
|
|
:param env_prefix: prefix for the environment variable names
|
|
:returns: configuration class
|
|
"""
|
|
|
|
def __init__(
|
|
self,
|
|
*,
|
|
env_prefix: str = DEFAULT_ENV_PREFIX,
|
|
env_delimiter: str = "_",
|
|
filepath: Optional[Path] = None,
|
|
) -> None:
|
|
file_values = self._load_file_values(filepath)
|
|
env_values = self._load_env_values(env_prefix, env_delimiter)
|
|
|
|
try:
|
|
super().__init__(
|
|
**{
|
|
**file_values,
|
|
**env_values,
|
|
},
|
|
)
|
|
except ValidationError as error:
|
|
logger.critical(error)
|
|
sys.exit(1)
|
|
|
|
def _load_env_values(self, env_prefix: str, env_delimiter: str) -> Dict[str, Any]:
|
|
return self._get_fields_from_env(env_prefix, env_delimiter, self.__fields__)
|
|
|
|
def _get_fields_from_env(
|
|
self,
|
|
env_prefix: str,
|
|
env_delimiter: str,
|
|
fields: Dict[str, ModelField],
|
|
) -> Dict[str, Any]:
|
|
result: Dict[str, Any] = {}
|
|
|
|
if env_prefix != "":
|
|
env_prefix += env_delimiter
|
|
|
|
for field in fields.values():
|
|
env_name = (env_prefix + field.name).upper()
|
|
|
|
if field.is_complex():
|
|
result[field.name] = self._get_fields_from_env(
|
|
env_name,
|
|
env_delimiter,
|
|
field.type_.__fields__,
|
|
)
|
|
else:
|
|
if env_name in environ:
|
|
result[field.name] = environ[env_name]
|
|
|
|
return result
|
|
|
|
# pylint: disable=no-self-use
|
|
def _load_file_values(
|
|
self,
|
|
filepath: Optional[Path] = None,
|
|
) -> Dict[str, Any]:
|
|
if filepath is None:
|
|
return {}
|
|
|
|
try:
|
|
return safe_load(filepath.read_text(encoding="utf-8"))
|
|
except YAMLError as error:
|
|
logger.critical(error)
|
|
sys.exit(1)
|
|
|
|
|
|
# pylint: disable=too-few-public-methods
|
|
class Database(BaseModel):
|
|
host: str = "localhost"
|
|
port: int = 5432
|
|
name: str = "libretime"
|
|
user: str = "libretime"
|
|
password: str = "libretime"
|
|
|
|
|
|
# pylint: disable=too-few-public-methods
|
|
class RabbitMQ(BaseModel):
|
|
host: str = "localhost"
|
|
port: int = 5672
|
|
name: str = "libretime"
|
|
user: str = "libretime"
|
|
password: str = "libretime"
|
|
vhost: str = "/libretime"
|