1# Copyright 2015 Google Inc.
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7# http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14
15"""Application default credentials.
16
17Implements application default credentials and project ID detection.
18"""
19
20import io
21import json
22import logging
23import os
24import warnings
25
26from google.auth import environment_vars
27from google.auth import exceptions
28import google.auth.transport._http_client
29
30_LOGGER = logging.getLogger(__name__)
31
32# Valid types accepted for file-based credentials.
33_AUTHORIZED_USER_TYPE = "authorized_user"
34_SERVICE_ACCOUNT_TYPE = "service_account"
35_EXTERNAL_ACCOUNT_TYPE = "external_account"
36_EXTERNAL_ACCOUNT_AUTHORIZED_USER_TYPE = "external_account_authorized_user"
37_IMPERSONATED_SERVICE_ACCOUNT_TYPE = "impersonated_service_account"
38_GDCH_SERVICE_ACCOUNT_TYPE = "gdch_service_account"
39_VALID_TYPES = (
40 _AUTHORIZED_USER_TYPE,
41 _SERVICE_ACCOUNT_TYPE,
42 _EXTERNAL_ACCOUNT_TYPE,
43 _EXTERNAL_ACCOUNT_AUTHORIZED_USER_TYPE,
44 _IMPERSONATED_SERVICE_ACCOUNT_TYPE,
45 _GDCH_SERVICE_ACCOUNT_TYPE,
46)
47
48# Help message when no credentials can be found.
49_CLOUD_SDK_MISSING_CREDENTIALS = """\
50Your default credentials were not found. To set up Application Default Credentials, \
51see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.\
52"""
53
54# Warning when using Cloud SDK user credentials
55_CLOUD_SDK_CREDENTIALS_WARNING = """\
56Your application has authenticated using end user credentials from Google \
57Cloud SDK without a quota project. You might receive a "quota exceeded" \
58or "API not enabled" error. See the following page for troubleshooting: \
59https://cloud.google.com/docs/authentication/adc-troubleshooting/user-creds. \
60"""
61
62# The subject token type used for AWS external_account credentials.
63_AWS_SUBJECT_TOKEN_TYPE = "urn:ietf:params:aws:token-type:aws4_request"
64
65
66def _warn_about_problematic_credentials(credentials):
67 """Determines if the credentials are problematic.
68
69 Credentials from the Cloud SDK that are associated with Cloud SDK's project
70 are problematic because they may not have APIs enabled and have limited
71 quota. If this is the case, warn about it.
72 """
73 from google.auth import _cloud_sdk
74
75 if credentials.client_id == _cloud_sdk.CLOUD_SDK_CLIENT_ID:
76 warnings.warn(_CLOUD_SDK_CREDENTIALS_WARNING)
77
78
79def load_credentials_from_file(
80 filename, scopes=None, default_scopes=None, quota_project_id=None, request=None
81):
82 """Loads Google credentials from a file.
83
84 The credentials file must be a service account key, stored authorized
85 user credentials, external account credentials, or impersonated service
86 account credentials.
87
88 Args:
89 filename (str): The full path to the credentials file.
90 scopes (Optional[Sequence[str]]): The list of scopes for the credentials. If
91 specified, the credentials will automatically be scoped if
92 necessary
93 default_scopes (Optional[Sequence[str]]): Default scopes passed by a
94 Google client library. Use 'scopes' for user-defined scopes.
95 quota_project_id (Optional[str]): The project ID used for
96 quota and billing.
97 request (Optional[google.auth.transport.Request]): An object used to make
98 HTTP requests. This is used to determine the associated project ID
99 for a workload identity pool resource (external account credentials).
100 If not specified, then it will use a
101 google.auth.transport.requests.Request client to make requests.
102
103 Returns:
104 Tuple[google.auth.credentials.Credentials, Optional[str]]: Loaded
105 credentials and the project ID. Authorized user credentials do not
106 have the project ID information. External account credentials project
107 IDs may not always be determined.
108
109 Raises:
110 google.auth.exceptions.DefaultCredentialsError: if the file is in the
111 wrong format or is missing.
112 """
113 if not os.path.exists(filename):
114 raise exceptions.DefaultCredentialsError(
115 "File {} was not found.".format(filename)
116 )
117
118 with io.open(filename, "r") as file_obj:
119 try:
120 info = json.load(file_obj)
121 except ValueError as caught_exc:
122 new_exc = exceptions.DefaultCredentialsError(
123 "File {} is not a valid json file.".format(filename), caught_exc
124 )
125 raise new_exc from caught_exc
126 return _load_credentials_from_info(
127 filename, info, scopes, default_scopes, quota_project_id, request
128 )
129
130
131def load_credentials_from_dict(
132 info, scopes=None, default_scopes=None, quota_project_id=None, request=None
133):
134 """Loads Google credentials from a dict.
135
136 The credentials file must be a service account key, stored authorized
137 user credentials, external account credentials, or impersonated service
138 account credentials.
139
140 Args:
141 info (Dict[str, Any]): A dict object containing the credentials
142 scopes (Optional[Sequence[str]]): The list of scopes for the credentials. If
143 specified, the credentials will automatically be scoped if
144 necessary
145 default_scopes (Optional[Sequence[str]]): Default scopes passed by a
146 Google client library. Use 'scopes' for user-defined scopes.
147 quota_project_id (Optional[str]): The project ID used for
148 quota and billing.
149 request (Optional[google.auth.transport.Request]): An object used to make
150 HTTP requests. This is used to determine the associated project ID
151 for a workload identity pool resource (external account credentials).
152 If not specified, then it will use a
153 google.auth.transport.requests.Request client to make requests.
154
155 Returns:
156 Tuple[google.auth.credentials.Credentials, Optional[str]]: Loaded
157 credentials and the project ID. Authorized user credentials do not
158 have the project ID information. External account credentials project
159 IDs may not always be determined.
160
161 Raises:
162 google.auth.exceptions.DefaultCredentialsError: if the file is in the
163 wrong format or is missing.
164 """
165 if not isinstance(info, dict):
166 raise exceptions.DefaultCredentialsError(
167 "info object was of type {} but dict type was expected.".format(type(info))
168 )
169
170 return _load_credentials_from_info(
171 "dict object", info, scopes, default_scopes, quota_project_id, request
172 )
173
174
175def _load_credentials_from_info(
176 filename, info, scopes, default_scopes, quota_project_id, request
177):
178 from google.auth.credentials import CredentialsWithQuotaProject
179
180 credential_type = info.get("type")
181
182 if credential_type == _AUTHORIZED_USER_TYPE:
183 credentials, project_id = _get_authorized_user_credentials(
184 filename, info, scopes
185 )
186
187 elif credential_type == _SERVICE_ACCOUNT_TYPE:
188 credentials, project_id = _get_service_account_credentials(
189 filename, info, scopes, default_scopes
190 )
191
192 elif credential_type == _EXTERNAL_ACCOUNT_TYPE:
193 credentials, project_id = _get_external_account_credentials(
194 info,
195 filename,
196 scopes=scopes,
197 default_scopes=default_scopes,
198 request=request,
199 )
200
201 elif credential_type == _EXTERNAL_ACCOUNT_AUTHORIZED_USER_TYPE:
202 credentials, project_id = _get_external_account_authorized_user_credentials(
203 filename, info, request
204 )
205
206 elif credential_type == _IMPERSONATED_SERVICE_ACCOUNT_TYPE:
207 credentials, project_id = _get_impersonated_service_account_credentials(
208 filename, info, scopes
209 )
210 elif credential_type == _GDCH_SERVICE_ACCOUNT_TYPE:
211 credentials, project_id = _get_gdch_service_account_credentials(filename, info)
212 else:
213 raise exceptions.DefaultCredentialsError(
214 "The file {file} does not have a valid type. "
215 "Type is {type}, expected one of {valid_types}.".format(
216 file=filename, type=credential_type, valid_types=_VALID_TYPES
217 )
218 )
219 if isinstance(credentials, CredentialsWithQuotaProject):
220 credentials = _apply_quota_project_id(credentials, quota_project_id)
221 return credentials, project_id
222
223
224def _get_gcloud_sdk_credentials(quota_project_id=None):
225 """Gets the credentials and project ID from the Cloud SDK."""
226 from google.auth import _cloud_sdk
227
228 _LOGGER.debug("Checking Cloud SDK credentials as part of auth process...")
229
230 # Check if application default credentials exist.
231 credentials_filename = _cloud_sdk.get_application_default_credentials_path()
232
233 if not os.path.isfile(credentials_filename):
234 _LOGGER.debug("Cloud SDK credentials not found on disk; not using them")
235 return None, None
236
237 credentials, project_id = load_credentials_from_file(
238 credentials_filename, quota_project_id=quota_project_id
239 )
240
241 if not project_id:
242 project_id = _cloud_sdk.get_project_id()
243
244 return credentials, project_id
245
246
247def _get_explicit_environ_credentials(quota_project_id=None):
248 """Gets credentials from the GOOGLE_APPLICATION_CREDENTIALS environment
249 variable."""
250 from google.auth import _cloud_sdk
251
252 cloud_sdk_adc_path = _cloud_sdk.get_application_default_credentials_path()
253 explicit_file = os.environ.get(environment_vars.CREDENTIALS)
254
255 _LOGGER.debug(
256 "Checking %s for explicit credentials as part of auth process...", explicit_file
257 )
258
259 if explicit_file is not None and explicit_file == cloud_sdk_adc_path:
260 # Cloud sdk flow calls gcloud to fetch project id, so if the explicit
261 # file path is cloud sdk credentials path, then we should fall back
262 # to cloud sdk flow, otherwise project id cannot be obtained.
263 _LOGGER.debug(
264 "Explicit credentials path %s is the same as Cloud SDK credentials path, fall back to Cloud SDK credentials flow...",
265 explicit_file,
266 )
267 return _get_gcloud_sdk_credentials(quota_project_id=quota_project_id)
268
269 if explicit_file is not None:
270 credentials, project_id = load_credentials_from_file(
271 os.environ[environment_vars.CREDENTIALS], quota_project_id=quota_project_id
272 )
273
274 return credentials, project_id
275
276 else:
277 return None, None
278
279
280def _get_gae_credentials():
281 """Gets Google App Engine App Identity credentials and project ID."""
282 # If not GAE gen1, prefer the metadata service even if the GAE APIs are
283 # available as per https://google.aip.dev/auth/4115.
284 if os.environ.get(environment_vars.LEGACY_APPENGINE_RUNTIME) != "python27":
285 return None, None
286
287 # While this library is normally bundled with app_engine, there are
288 # some cases where it's not available, so we tolerate ImportError.
289 try:
290 _LOGGER.debug("Checking for App Engine runtime as part of auth process...")
291 import google.auth.app_engine as app_engine
292 except ImportError:
293 _LOGGER.warning("Import of App Engine auth library failed.")
294 return None, None
295
296 try:
297 credentials = app_engine.Credentials()
298 project_id = app_engine.get_project_id()
299 return credentials, project_id
300 except EnvironmentError:
301 _LOGGER.debug(
302 "No App Engine library was found so cannot authentication via App Engine Identity Credentials."
303 )
304 return None, None
305
306
307def _get_gce_credentials(request=None, quota_project_id=None):
308 """Gets credentials and project ID from the GCE Metadata Service."""
309 # Ping requires a transport, but we want application default credentials
310 # to require no arguments. So, we'll use the _http_client transport which
311 # uses http.client. This is only acceptable because the metadata server
312 # doesn't do SSL and never requires proxies.
313
314 # While this library is normally bundled with compute_engine, there are
315 # some cases where it's not available, so we tolerate ImportError.
316 try:
317 from google.auth import compute_engine
318 from google.auth.compute_engine import _metadata
319 except ImportError:
320 _LOGGER.warning("Import of Compute Engine auth library failed.")
321 return None, None
322
323 if request is None:
324 request = google.auth.transport._http_client.Request()
325
326 if _metadata.is_on_gce(request=request):
327 # Get the project ID.
328 try:
329 project_id = _metadata.get_project_id(request=request)
330 except exceptions.TransportError:
331 project_id = None
332
333 cred = compute_engine.Credentials()
334 cred = _apply_quota_project_id(cred, quota_project_id)
335
336 return cred, project_id
337 else:
338 _LOGGER.warning(
339 "Authentication failed using Compute Engine authentication due to unavailable metadata server."
340 )
341 return None, None
342
343
344def _get_external_account_credentials(
345 info, filename, scopes=None, default_scopes=None, request=None
346):
347 """Loads external account Credentials from the parsed external account info.
348
349 The credentials information must correspond to a supported external account
350 credentials.
351
352 Args:
353 info (Mapping[str, str]): The external account info in Google format.
354 filename (str): The full path to the credentials file.
355 scopes (Optional[Sequence[str]]): The list of scopes for the credentials. If
356 specified, the credentials will automatically be scoped if
357 necessary.
358 default_scopes (Optional[Sequence[str]]): Default scopes passed by a
359 Google client library. Use 'scopes' for user-defined scopes.
360 request (Optional[google.auth.transport.Request]): An object used to make
361 HTTP requests. This is used to determine the associated project ID
362 for a workload identity pool resource (external account credentials).
363 If not specified, then it will use a
364 google.auth.transport.requests.Request client to make requests.
365
366 Returns:
367 Tuple[google.auth.credentials.Credentials, Optional[str]]: Loaded
368 credentials and the project ID. External account credentials project
369 IDs may not always be determined.
370
371 Raises:
372 google.auth.exceptions.DefaultCredentialsError: if the info dictionary
373 is in the wrong format or is missing required information.
374 """
375 # There are currently 3 types of external_account credentials.
376 if info.get("subject_token_type") == _AWS_SUBJECT_TOKEN_TYPE:
377 # Check if configuration corresponds to an AWS credentials.
378 from google.auth import aws
379
380 credentials = aws.Credentials.from_info(
381 info, scopes=scopes, default_scopes=default_scopes
382 )
383 elif (
384 info.get("credential_source") is not None
385 and info.get("credential_source").get("executable") is not None
386 ):
387 from google.auth import pluggable
388
389 credentials = pluggable.Credentials.from_info(
390 info, scopes=scopes, default_scopes=default_scopes
391 )
392 else:
393 try:
394 # Check if configuration corresponds to an Identity Pool credentials.
395 from google.auth import identity_pool
396
397 credentials = identity_pool.Credentials.from_info(
398 info, scopes=scopes, default_scopes=default_scopes
399 )
400 except ValueError:
401 # If the configuration is invalid or does not correspond to any
402 # supported external_account credentials, raise an error.
403 raise exceptions.DefaultCredentialsError(
404 "Failed to load external account credentials from {}".format(filename)
405 )
406 if request is None:
407 import google.auth.transport.requests
408
409 request = google.auth.transport.requests.Request()
410
411 return credentials, credentials.get_project_id(request=request)
412
413
414def _get_external_account_authorized_user_credentials(
415 filename, info, scopes=None, default_scopes=None, request=None
416):
417 try:
418 from google.auth import external_account_authorized_user
419
420 credentials = external_account_authorized_user.Credentials.from_info(info)
421 except ValueError:
422 raise exceptions.DefaultCredentialsError(
423 "Failed to load external account authorized user credentials from {}".format(
424 filename
425 )
426 )
427
428 return credentials, None
429
430
431def _get_authorized_user_credentials(filename, info, scopes=None):
432 from google.oauth2 import credentials
433
434 try:
435 credentials = credentials.Credentials.from_authorized_user_info(
436 info, scopes=scopes
437 )
438 except ValueError as caught_exc:
439 msg = "Failed to load authorized user credentials from {}".format(filename)
440 new_exc = exceptions.DefaultCredentialsError(msg, caught_exc)
441 raise new_exc from caught_exc
442 return credentials, None
443
444
445def _get_service_account_credentials(filename, info, scopes=None, default_scopes=None):
446 from google.oauth2 import service_account
447
448 try:
449 credentials = service_account.Credentials.from_service_account_info(
450 info, scopes=scopes, default_scopes=default_scopes
451 )
452 except ValueError as caught_exc:
453 msg = "Failed to load service account credentials from {}".format(filename)
454 new_exc = exceptions.DefaultCredentialsError(msg, caught_exc)
455 raise new_exc from caught_exc
456 return credentials, info.get("project_id")
457
458
459def _get_impersonated_service_account_credentials(filename, info, scopes):
460 from google.auth import impersonated_credentials
461
462 try:
463 source_credentials_info = info.get("source_credentials")
464 source_credentials_type = source_credentials_info.get("type")
465 if source_credentials_type == _AUTHORIZED_USER_TYPE:
466 source_credentials, _ = _get_authorized_user_credentials(
467 filename, source_credentials_info
468 )
469 elif source_credentials_type == _SERVICE_ACCOUNT_TYPE:
470 source_credentials, _ = _get_service_account_credentials(
471 filename, source_credentials_info
472 )
473 else:
474 raise exceptions.InvalidType(
475 "source credential of type {} is not supported.".format(
476 source_credentials_type
477 )
478 )
479 impersonation_url = info.get("service_account_impersonation_url")
480 start_index = impersonation_url.rfind("/")
481 end_index = impersonation_url.find(":generateAccessToken")
482 if start_index == -1 or end_index == -1 or start_index > end_index:
483 raise exceptions.InvalidValue(
484 "Cannot extract target principal from {}".format(impersonation_url)
485 )
486 target_principal = impersonation_url[start_index + 1 : end_index]
487 delegates = info.get("delegates")
488 quota_project_id = info.get("quota_project_id")
489 credentials = impersonated_credentials.Credentials(
490 source_credentials,
491 target_principal,
492 scopes,
493 delegates,
494 quota_project_id=quota_project_id,
495 )
496 except ValueError as caught_exc:
497 msg = "Failed to load impersonated service account credentials from {}".format(
498 filename
499 )
500 new_exc = exceptions.DefaultCredentialsError(msg, caught_exc)
501 raise new_exc from caught_exc
502 return credentials, None
503
504
505def _get_gdch_service_account_credentials(filename, info):
506 from google.oauth2 import gdch_credentials
507
508 try:
509 credentials = gdch_credentials.ServiceAccountCredentials.from_service_account_info(
510 info
511 )
512 except ValueError as caught_exc:
513 msg = "Failed to load GDCH service account credentials from {}".format(filename)
514 new_exc = exceptions.DefaultCredentialsError(msg, caught_exc)
515 raise new_exc from caught_exc
516 return credentials, info.get("project")
517
518
519def get_api_key_credentials(key):
520 """Return credentials with the given API key."""
521 from google.auth import api_key
522
523 return api_key.Credentials(key)
524
525
526def _apply_quota_project_id(credentials, quota_project_id):
527 if quota_project_id:
528 credentials = credentials.with_quota_project(quota_project_id)
529 else:
530 credentials = credentials.with_quota_project_from_environment()
531
532 from google.oauth2 import credentials as authorized_user_credentials
533
534 if isinstance(credentials, authorized_user_credentials.Credentials) and (
535 not credentials.quota_project_id
536 ):
537 _warn_about_problematic_credentials(credentials)
538 return credentials
539
540
541def default(scopes=None, request=None, quota_project_id=None, default_scopes=None):
542 """Gets the default credentials for the current environment.
543
544 `Application Default Credentials`_ provides an easy way to obtain
545 credentials to call Google APIs for server-to-server or local applications.
546 This function acquires credentials from the environment in the following
547 order:
548
549 1. If the environment variable ``GOOGLE_APPLICATION_CREDENTIALS`` is set
550 to the path of a valid service account JSON private key file, then it is
551 loaded and returned. The project ID returned is the project ID defined
552 in the service account file if available (some older files do not
553 contain project ID information).
554
555 If the environment variable is set to the path of a valid external
556 account JSON configuration file (workload identity federation), then the
557 configuration file is used to determine and retrieve the external
558 credentials from the current environment (AWS, Azure, etc).
559 These will then be exchanged for Google access tokens via the Google STS
560 endpoint.
561 The project ID returned in this case is the one corresponding to the
562 underlying workload identity pool resource if determinable.
563
564 If the environment variable is set to the path of a valid GDCH service
565 account JSON file (`Google Distributed Cloud Hosted`_), then a GDCH
566 credential will be returned. The project ID returned is the project
567 specified in the JSON file.
568 2. If the `Google Cloud SDK`_ is installed and has application default
569 credentials set they are loaded and returned.
570
571 To enable application default credentials with the Cloud SDK run::
572
573 gcloud auth application-default login
574
575 If the Cloud SDK has an active project, the project ID is returned. The
576 active project can be set using::
577
578 gcloud config set project
579
580 3. If the application is running in the `App Engine standard environment`_
581 (first generation) then the credentials and project ID from the
582 `App Identity Service`_ are used.
583 4. If the application is running in `Compute Engine`_ or `Cloud Run`_ or
584 the `App Engine flexible environment`_ or the `App Engine standard
585 environment`_ (second generation) then the credentials and project ID
586 are obtained from the `Metadata Service`_.
587 5. If no credentials are found,
588 :class:`~google.auth.exceptions.DefaultCredentialsError` will be raised.
589
590 .. _Application Default Credentials: https://developers.google.com\
591 /identity/protocols/application-default-credentials
592 .. _Google Cloud SDK: https://cloud.google.com/sdk
593 .. _App Engine standard environment: https://cloud.google.com/appengine
594 .. _App Identity Service: https://cloud.google.com/appengine/docs/python\
595 /appidentity/
596 .. _Compute Engine: https://cloud.google.com/compute
597 .. _App Engine flexible environment: https://cloud.google.com\
598 /appengine/flexible
599 .. _Metadata Service: https://cloud.google.com/compute/docs\
600 /storing-retrieving-metadata
601 .. _Cloud Run: https://cloud.google.com/run
602 .. _Google Distributed Cloud Hosted: https://cloud.google.com/blog/topics\
603 /hybrid-cloud/announcing-google-distributed-cloud-edge-and-hosted
604
605 Example::
606
607 import google.auth
608
609 credentials, project_id = google.auth.default()
610
611 Args:
612 scopes (Sequence[str]): The list of scopes for the credentials. If
613 specified, the credentials will automatically be scoped if
614 necessary.
615 request (Optional[google.auth.transport.Request]): An object used to make
616 HTTP requests. This is used to either detect whether the application
617 is running on Compute Engine or to determine the associated project
618 ID for a workload identity pool resource (external account
619 credentials). If not specified, then it will either use the standard
620 library http client to make requests for Compute Engine credentials
621 or a google.auth.transport.requests.Request client for external
622 account credentials.
623 quota_project_id (Optional[str]): The project ID used for
624 quota and billing.
625 default_scopes (Optional[Sequence[str]]): Default scopes passed by a
626 Google client library. Use 'scopes' for user-defined scopes.
627 Returns:
628 Tuple[~google.auth.credentials.Credentials, Optional[str]]:
629 the current environment's credentials and project ID. Project ID
630 may be None, which indicates that the Project ID could not be
631 ascertained from the environment.
632
633 Raises:
634 ~google.auth.exceptions.DefaultCredentialsError:
635 If no credentials were found, or if the credentials found were
636 invalid.
637 """
638 from google.auth.credentials import with_scopes_if_required
639 from google.auth.credentials import CredentialsWithQuotaProject
640
641 explicit_project_id = os.environ.get(
642 environment_vars.PROJECT, os.environ.get(environment_vars.LEGACY_PROJECT)
643 )
644
645 checkers = (
646 # Avoid passing scopes here to prevent passing scopes to user credentials.
647 # with_scopes_if_required() below will ensure scopes/default scopes are
648 # safely set on the returned credentials since requires_scopes will
649 # guard against setting scopes on user credentials.
650 lambda: _get_explicit_environ_credentials(quota_project_id=quota_project_id),
651 lambda: _get_gcloud_sdk_credentials(quota_project_id=quota_project_id),
652 _get_gae_credentials,
653 lambda: _get_gce_credentials(request, quota_project_id=quota_project_id),
654 )
655
656 for checker in checkers:
657 credentials, project_id = checker()
658 if credentials is not None:
659 credentials = with_scopes_if_required(
660 credentials, scopes, default_scopes=default_scopes
661 )
662
663 effective_project_id = explicit_project_id or project_id
664
665 # For external account credentials, scopes are required to determine
666 # the project ID. Try to get the project ID again if not yet
667 # determined.
668 if not effective_project_id and callable(
669 getattr(credentials, "get_project_id", None)
670 ):
671 if request is None:
672 import google.auth.transport.requests
673
674 request = google.auth.transport.requests.Request()
675 effective_project_id = credentials.get_project_id(request=request)
676
677 if quota_project_id and isinstance(
678 credentials, CredentialsWithQuotaProject
679 ):
680 credentials = credentials.with_quota_project(quota_project_id)
681
682 if not effective_project_id:
683 _LOGGER.warning(
684 "No project ID could be determined. Consider running "
685 "`gcloud config set project` or setting the %s "
686 "environment variable",
687 environment_vars.PROJECT,
688 )
689 return credentials, effective_project_id
690
691 raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)