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user.py
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user.py
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# Copyright (c) 2018, 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.
# pylint: disable=invalid-name, too-few-public-methods
"""User primitive"""
from __future__ import absolute_import
from __future__ import unicode_literals
from __future__ import print_function
import logging # pylint: disable=unused-import
import hpccm.config
from hpccm.common import container_type
class user(object):
"""The `user` primitive sets the user name to use for any subsequent
steps.
This primitive is the null operation for Singularity.
# Parameters
user: The user name to use. The default is an empty string.
# Examples
```python
user(user='ncognito')
```
"""
def __init__(self, **kwargs):
"""Initialize primitive"""
self.user = kwargs.get('user', '')
def __str__(self):
"""String representation of the primitive"""
if self.user:
if hpccm.config.g_ctype == container_type.DOCKER:
return 'USER {}'.format(self.user)
elif hpccm.config.g_ctype == container_type.SINGULARITY:
return ''
elif hpccm.config.g_ctype == container_type.BASH:
return ''
else:
raise RuntimeError('Unknown container type')
else:
logging.error('No user specified')
return ''