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# Copyright (c) 2025, NVIDIA CORPORATION. All rights reserved.
#
# Licensed 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.
from pathlib import Path
from typing import Union
try:
import multistorageclient as msc
HAVE_MSC = True
except (ImportError, ModuleNotFoundError):
msc = None
HAVE_MSC = False
MSC_PROTOCOL = "msc://"
def is_multistorageclient_url(path: Union[str, Path]):
"""
Check if the path is a multistorageclient URL (e.g. msc://<profile>/<path>).
Args:
path: str, the path to check.
Returns:
bool, True if the path is a multistorageclient URL, False otherwise.
"""
if isinstance(path, Path):
return False
has_msc_prefix = path and str(path).startswith(MSC_PROTOCOL)
if HAVE_MSC:
return has_msc_prefix
if not HAVE_MSC and has_msc_prefix:
raise ValueError(
"Multi-Storage Client is not installed. Please install it with "
'"pip install multi-storage-client" to handle msc:// URLs.'
)
return False
def import_multistorageclient():
"""Import multistorageclient if it is installed."""
if not HAVE_MSC:
raise ValueError(
"Multi-Storage Client is not installed. Please install it with " '"pip install multi-storage-client".'
)
return msc
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