mirror of
https://github.com/elastic/eland.git
synced 2025-07-11 00:02:14 +08:00
116 lines
4.1 KiB
Python
116 lines
4.1 KiB
Python
# Licensed to Elasticsearch B.V. under one or more contributor
|
|
# license agreements. See the NOTICE file distributed with
|
|
# this work for additional information regarding copyright
|
|
# ownership. Elasticsearch B.V. licenses this file to you 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 distutils.version
|
|
import importlib
|
|
import types
|
|
import warnings
|
|
|
|
# ----------------------------------------------------------------------------
|
|
# functions largely based / taken from the six module
|
|
|
|
# Much of the code in this module comes from pandas.
|
|
# The license for this library can be found NOTICE.txt and the code can be
|
|
# https://raw.githubusercontent.com/pandas-dev/pandas/v1.0.1/pandas/compat/_optional.py
|
|
|
|
VERSIONS = {"xgboost": "0.90", "sklearn": "0.22.1"}
|
|
|
|
# Update install.rst when updating versions!
|
|
|
|
message = (
|
|
"Missing optional dependency '{name}'. {extra} "
|
|
"Use pip or conda to install {name}."
|
|
)
|
|
version_message = (
|
|
"Eland requires version '{minimum_version}' or newer of '{name}' "
|
|
"(version '{actual_version}' currently installed). "
|
|
"Use pip or conda to update {name}."
|
|
)
|
|
|
|
|
|
def _get_version(module: types.ModuleType) -> str:
|
|
version = getattr(module, "__version__", None)
|
|
if version is None:
|
|
# xlrd uses a capitalized attribute name
|
|
version = getattr(module, "__VERSION__", None)
|
|
|
|
if version is None:
|
|
raise ImportError(f"Can't determine version for {module.__name__}")
|
|
return version
|
|
|
|
|
|
def import_optional_dependency(
|
|
name: str, extra: str = "", raise_on_missing: bool = True, on_version: str = "raise"
|
|
):
|
|
"""
|
|
Import an optional dependency.
|
|
|
|
By default, if a dependency is missing an ImportError with a nice
|
|
message will be raised. If a dependency is present, but too old,
|
|
we raise.
|
|
|
|
Parameters
|
|
----------
|
|
name : str
|
|
The module name. This should be top-level only, so that the
|
|
version may be checked.
|
|
extra : str
|
|
Additional text to include in the ImportError message.
|
|
raise_on_missing : bool, default True
|
|
Whether to raise if the optional dependency is not found.
|
|
When False and the module is not present, None is returned.
|
|
on_version : str {'raise', 'warn'}
|
|
What to do when a dependency's version is too old.
|
|
|
|
* raise : Raise an ImportError
|
|
* warn : Warn that the version is too old. Returns None
|
|
* ignore: Return the module, even if the version is too old.
|
|
It's expected that users validate the version locally when
|
|
using ``on_version="ignore"`` (see. ``io/html.py``)
|
|
|
|
Returns
|
|
-------
|
|
maybe_module : Optional[ModuleType]
|
|
The imported module, when found and the version is correct.
|
|
None is returned when the package is not found and `raise_on_missing`
|
|
is False, or when the package's version is too old and `on_version`
|
|
is ``'warn'``.
|
|
"""
|
|
try:
|
|
module = importlib.import_module(name)
|
|
except ImportError:
|
|
if raise_on_missing:
|
|
raise ImportError(message.format(name=name, extra=extra)) from None
|
|
else:
|
|
return None
|
|
|
|
minimum_version = VERSIONS.get(name)
|
|
if minimum_version:
|
|
version = _get_version(module)
|
|
if distutils.version.LooseVersion(version) < minimum_version:
|
|
assert on_version in {"warn", "raise", "ignore"}
|
|
msg = version_message.format(
|
|
minimum_version=minimum_version, name=name, actual_version=version
|
|
)
|
|
if on_version == "warn":
|
|
warnings.warn(msg, UserWarning)
|
|
return None
|
|
elif on_version == "raise":
|
|
raise ImportError(msg)
|
|
|
|
return module
|