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108 lines
3.7 KiB
Python
108 lines
3.7 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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from __future__ import annotations
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import importlib.machinery
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import importlib.util
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import logging
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import os
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import sys
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from types import ModuleType
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from typing import Any, Dict, Union
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from flask import Flask
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from werkzeug.utils import import_string
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from superset.initialization import SupersetAppInitializer
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from superset.utils.core import is_test
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logger = logging.getLogger(__name__)
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def create_app() -> Flask:
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app = SupersetApp(__name__)
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try:
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# Allow user to override our config completely
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config = init_config()
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app.config.from_mapping(config)
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app_initializer = app.config.get("APP_INITIALIZER", SupersetAppInitializer)(app)
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app_initializer.init_app()
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return app
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# Make sure that bootstrap errors ALWAYS get logged
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except Exception as ex:
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logger.exception("Failed to create app")
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raise ex
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def init_config() -> Dict[Any, Any]:
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config = convert_to_dict(load_default_config())
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override_conf = convert_to_dict(load_override_config())
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config.update(override_conf)
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return config
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def convert_to_dict(module: Union[ModuleType, Dict[Any, Any]]) -> Dict[Any, Any]:
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raw_dict = module if isinstance(module, dict) else module.__dict__
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return {k: v for k, v in raw_dict.items() if k.isupper() and not k.startswith("_")}
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def load_default_config() -> ModuleType:
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config_module = os.environ.get("SUPERSET_CONFIG", "superset.config")
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config: ModuleType = import_string(config_module)
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return config
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def load_override_config() -> Union[Dict[Any, Any], ModuleType]:
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CONFIG_PATH_ENV_VAR = "SUPERSET_CONFIG_PATH" # pylint: disable=C0103
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if CONFIG_PATH_ENV_VAR in os.environ:
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# Explicitly import config module that is not necessarily in pythonpath; useful
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# for case where app is being executed via pex.
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cfg_path = os.environ[CONFIG_PATH_ENV_VAR]
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try:
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CONFIG_MODULE_NAME = "superset_config" # pylint: disable=C0103
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loader = importlib.machinery.SourceFileLoader(CONFIG_MODULE_NAME, cfg_path)
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spec = importlib.util.spec_from_loader(CONFIG_MODULE_NAME, loader)
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override_conf = importlib.util.module_from_spec(spec)
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sys.modules[CONFIG_MODULE_NAME] = override_conf
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loader.exec_module(override_conf)
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print(f"Loaded your LOCAL configuration at [{cfg_path}]")
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return override_conf
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except Exception:
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logger.exception(
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"Failed to import config for %s=%s", CONFIG_PATH_ENV_VAR, cfg_path
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)
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raise
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elif importlib.util.find_spec("superset_config") and not is_test():
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try:
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import superset_config # pylint: disable=import-error
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print(f"Loaded your LOCAL configuration at [{superset_config.__file__}]")
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return superset_config
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except Exception:
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logger.exception("Found but failed to import local superset_config")
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raise
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return {}
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class SupersetApp(Flask):
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pass
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