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109 lines
3.2 KiB
109 lines
3.2 KiB
1 year ago
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from __future__ import annotations
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from os import environ
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from dynaconf.utils import missing
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from dynaconf.utils import upperfy
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from dynaconf.utils.parse_conf import parse_conf_data
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DOTENV_IMPORTED = False
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try:
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from dynaconf.vendor.dotenv import cli as dotenv_cli
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DOTENV_IMPORTED = True
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except ImportError:
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pass
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except FileNotFoundError:
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pass
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IDENTIFIER = "env"
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def load(obj, env=None, silent=True, key=None):
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"""Loads envvars with prefixes:
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`DYNACONF_` (default global) or `$(ENVVAR_PREFIX_FOR_DYNACONF)_`
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"""
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global_prefix = obj.get("ENVVAR_PREFIX_FOR_DYNACONF")
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if global_prefix is False or global_prefix.upper() != "DYNACONF":
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load_from_env(obj, "DYNACONF", key, silent, IDENTIFIER + "_global")
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# Load the global env if exists and overwrite everything
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load_from_env(obj, global_prefix, key, silent, IDENTIFIER + "_global")
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def load_from_env(
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obj,
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prefix=False,
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key=None,
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silent=False,
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identifier=IDENTIFIER,
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env=False, # backwards compatibility bc renamed param
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):
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if prefix is False and env is not False:
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prefix = env
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env_ = ""
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if prefix is not False:
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if not isinstance(prefix, str):
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raise TypeError("`prefix/env` must be str or False")
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prefix = prefix.upper()
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env_ = f"{prefix}_"
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# Load a single environment variable explicitly.
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if key:
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key = upperfy(key)
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value = environ.get(f"{env_}{key}")
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if value:
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try: # obj is a Settings
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obj.set(key, value, loader_identifier=identifier, tomlfy=True)
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except AttributeError: # obj is a dict
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obj[key] = parse_conf_data(
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value, tomlfy=True, box_settings=obj
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)
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# Load environment variables in bulk (when matching).
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else:
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# Only known variables should be loaded from environment?
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ignore_unknown = obj.get("IGNORE_UNKNOWN_ENVVARS_FOR_DYNACONF")
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trim_len = len(env_)
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data = {
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key[trim_len:]: parse_conf_data(
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data, tomlfy=True, box_settings=obj
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)
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for key, data in environ.items()
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if key.startswith(env_)
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and not (
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# Ignore environment variables that haven't been
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# pre-defined in settings space.
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ignore_unknown
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and obj.get(key[trim_len:], default=missing) is missing
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)
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}
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# Update the settings space based on gathered data from environment.
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if data:
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filter_strategy = obj.get("FILTER_STRATEGY")
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if filter_strategy:
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data = filter_strategy(data)
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obj.update(data, loader_identifier=identifier)
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def write(settings_path, settings_data, **kwargs):
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"""Write data to .env file"""
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if not DOTENV_IMPORTED:
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return
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for key, value in settings_data.items():
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quote_mode = (
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isinstance(value, str)
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and (value.startswith("'") or value.startswith('"'))
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) or isinstance(value, (list, dict))
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dotenv_cli.set_key(
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str(settings_path),
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key,
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str(value),
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quote_mode="always" if quote_mode else "none",
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)
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