feat(sdk): migrate v1 auth to v2 (#7789)

* initial auth migration (@ji-yaqi)

* clean up files

* update imports

* add type annotations

* update docstrings

* add tests
This commit is contained in:
Connor McCarthy 2022-09-06 17:54:29 -06:00 committed by GitHub
parent a3c7c380a3
commit e14a784327
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6 changed files with 268 additions and 3 deletions

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@ -18,3 +18,9 @@ __all__ = [
]
from kfp.client.client import Client
from kfp.client.set_volume_credentials import \
ServiceAccountTokenVolumeCredentials
from kfp.client.token_credentials_base import TokenCredentialsBase
KF_PIPELINES_SA_TOKEN_ENV = 'KF_PIPELINES_SA_TOKEN_PATH'
KF_PIPELINES_SA_TOKEN_PATH = '/var/run/secrets/kubeflow/pipelines/token'

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@ -29,6 +29,7 @@ import zipfile
from kfp import compiler
from kfp.client import auth
from kfp.client import set_volume_credentials
from kfp.components import base_component
import kfp_server_api
import yaml
@ -367,9 +368,8 @@ class Client:
# implement more and more credentials, we can have some heuristic and
# choose from a number of options.
# See https://github.com/kubeflow/pipelines/pull/5287#issuecomment-805654121
# TODO: auth.ServiceAccountCredentials does not exist... dead code path?
credentials = auth.ServiceAccountTokenVolumeCredentials()
credentials = set_volume_credentials.ServiceAccountTokenVolumeCredentials(
)
config_copy = copy.deepcopy(config)
try:

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@ -0,0 +1,84 @@
# Copyright 2022 The Kubeflow Authors
#
# 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.
import logging
import os
from typing import Optional
from kfp import client
from kfp.client import token_credentials_base
from kubernetes.client import configuration
class ServiceAccountTokenVolumeCredentials(
token_credentials_base.TokenCredentialsBase):
"""Audience-bound ServiceAccountToken in the local filesystem.
This is a credentials interface for audience-bound ServiceAccountTokens
found in the local filesystem, that get refreshed by the kubelet.
The constructor of the class expects a filesystem path.
If not provided, it uses the path stored in the environment variable
defined in ``client.KF_PIPELINES_SA_TOKEN_ENV``.
If the environment variable is also empty, it falls back to the path
specified in ``client.KF_PIPELINES_SA_TOKEN_PATH``.
This method of authentication is meant for use inside a Kubernetes cluster.
Relevant documentation:
https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/#service-account-token-volume-projection
"""
def __init__(self, path: Optional[str] = None) -> None:
"""Constructs ServiceAccountTokenVolumeCredentials.
Args:
path (Optional[str], optional): Path of file containing auth token. Defaults to None.
"""
self._token_path = (
path or os.getenv(client.KF_PIPELINES_SA_TOKEN_ENV) or
client.KF_PIPELINES_SA_TOKEN_PATH)
def _get_token(self) -> str:
"""Reads the token found in file provided as `path` argument to
ServiceAccountTokenVolumeCredentials constructor.
Returns:
str: The token.
"""
token = None
try:
token = token_credentials_base.read_token_from_file(
self._token_path)
except OSError as e:
logging.error("Failed to read a token from file '%s' (%s).",
self._token_path, str(e))
raise
return token
def refresh_api_key_hook(self, config: configuration.Configuration) -> None:
"""Refreshes the api key using the token found in file provided as
`path` argument to ServiceAccountTokenVolumeCredentials constructor.
This is a helper function for registering token refresh with swagger
generated clients.
Args:
config (kubernetes.client.configuration.Configuration):
The configuration object that the client uses.
The Configuration object of the kubernetes client's is the same
with kfp_server_api.configuration.Configuration.
"""
config.api_key['authorization'] = self._get_token()

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@ -0,0 +1,49 @@
# Copyright 2022 The Kubeflow Authors
#
# 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.
import os
import tempfile
import unittest
from kfp.client import set_volume_credentials
from kfp.client import token_credentials_base
from kubernetes.client import configuration
class TestServiceAccountTokenVolumeCredentials(unittest.TestCase):
def test_get_token(self):
with tempfile.TemporaryDirectory() as tempdir:
token_path = os.path.join(tempdir, 'token.txt')
with open(token_path, 'w') as f:
f.write('my_token')
service_account_tvc = set_volume_credentials.ServiceAccountTokenVolumeCredentials(
token_path)
self.assertEqual(service_account_tvc._get_token(), 'my_token')
def test_refresh_api_key_hook(self):
with tempfile.TemporaryDirectory() as tempdir:
token_path = os.path.join(tempdir, 'token.txt')
with open(token_path, 'w') as f:
f.write('my_token')
service_account_tvc = set_volume_credentials.ServiceAccountTokenVolumeCredentials(
token_path)
config = configuration.Configuration()
with self.assertRaisesRegex(KeyError, r'authorization'):
config.api_key['authorization']
service_account_tvc.refresh_api_key_hook(config)
self.assertEqual(config.api_key['authorization'], 'my_token')

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@ -0,0 +1,55 @@
# Copyright 2022 The Kubeflow Authors
#
# 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.
import abc
from typing import Optional
from kubernetes.client import configuration
class TokenCredentialsBase(abc.ABC):
@abc.abstractmethod
def refresh_api_key_hook(self, config: configuration.Configuration) -> None:
"""Refreshes the api key.
This is a helper function for registering token refresh with swagger
generated clients.
All classes that inherit from TokenCredentialsBase must implement this
method to refresh the credentials.
Args:
config (kubernetes.client.configuration.Configuration):
The configuration object that the client uses.
The Configuration object of the kubernetes client's is the same
with kfp_server_api.configuration.Configuration.
"""
raise NotImplementedError()
def read_token_from_file(path: Optional[str] = None) -> str:
"""Reads a token found in some file.
Args:
path (Optional[str], optional): Path of file containing auth token. Defaults to None.
Returns:
str: The token.
"""
token = None
with open(path) as f:
token = f.read().strip()
return token

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@ -0,0 +1,71 @@
# Copyright 2022 The Kubeflow Authors
#
# 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.
import os
import tempfile
import unittest
from kfp.client import token_credentials_base
from kubernetes.client import configuration
class TestTokenCredentialsBase(unittest.TestCase):
def test_cannot_instantiate_abc(self):
class MyTokenGetter(token_credentials_base.TokenCredentialsBase):
def something(self) -> None:
pass
with self.assertRaisesRegex(TypeError,
r"Can't instantiate abstract class"):
MyTokenGetter()
def test_can_instantiate_with_refresh_api_key_hook(self):
class MyTokenGetter(token_credentials_base.TokenCredentialsBase):
def refresh_api_key_hook(
self, config: configuration.Configuration) -> None:
pass
# does not raise Exception
MyTokenGetter()
class TestReadTokenFromFile(unittest.TestCase):
def test_none_path(self):
with self.assertRaisesRegex(TypeError, r'^expected .* not NoneType'):
token_credentials_base.read_token_from_file()
def test_str_path(self):
with tempfile.TemporaryDirectory() as tempdir:
token_path = os.path.join(tempdir, 'token.txt')
with open(token_path, 'w') as f:
f.write('my_token')
self.assertEqual(
token_credentials_base.read_token_from_file(token_path),
'my_token')
def test_str_path_extra_spaces_in_token(self):
with tempfile.TemporaryDirectory() as tempdir:
token_path = os.path.join(tempdir, 'token.txt')
with open(token_path, 'w') as f:
f.write(' my_token ')
self.assertEqual(
token_credentials_base.read_token_from_file(token_path),
'my_token')