list_projects does not work, but search_projects does.

[fxdgear]

Environment details

• OS type and version:
• Python version: 3.9.6
• pip version: 21.3.1
• google-cloud-resource-manager version: 1.3.3

My service account has the following permissions:

• resourcemanager.projects.get
• resourcemanager.projects.list

list_projects - Fails

from google.cloud import resourcemanager

client = resourcemanager.ProjectsClient.from_service_account_json("creds.json")

for project in client.list_projects():
    print(project)

search_projects - Succeeds

from google.cloud import resourcemanager

client = resourcemanager.ProjectsClient.from_service_account_json("creds.json")

# List all projects you have access to
for project in client.search_projects():
    print(project)

Stack trace

Traceback (most recent call last):
  File "/app/gcp_utils.py", line 12, in <module>
    for project in client.list_projects():
  File "/usr/local/lib/python3.9/site-packages/google/cloud/resourcemanager_v3/services/projects/client.py", line 519, in list_projects
    response = rpc(request, retry=retry, timeout=timeout, metadata=metadata,)
  File "/usr/local/lib/python3.9/site-packages/google/api_core/gapic_v1/method.py", line 154, in __call__
    return wrapped_func(*args, **kwargs)
  File "/usr/local/lib/python3.9/site-packages/google/api_core/retry.py", line 283, in retry_wrapped_func
    return retry_target(
  File "/usr/local/lib/python3.9/site-packages/google/api_core/retry.py", line 190, in retry_target
    return target()
  File "/usr/local/lib/python3.9/site-packages/google/api_core/grpc_helpers.py", line 68, in error_remapped_callable
    raise exceptions.from_grpc_error(exc) from exc
google.api_core.exceptions.PermissionDenied: 403 The caller does not have permission

[parthea]

Hi @fxdgear,

TL;DR; use this code

from google.cloud import resourcemanager

client = resourcemanager.ProjectsClient.from_service_account_json("creds.json")

for project in client.list_projects(<The name of the parent resource to list projects under>):
    print(project)

I was able to re-create the issue with your code snippet. As a first step, I went to the Try this API
section for the Resource Manager V3 list_projects reference documentation. I noticed that the parent parameter is required. Once I provided a parent parameter, I received a valid response. I've checked that the parent parameter is also listed as a required parameter in the docs here. Regretfully we don't have samples in this repository. We are tracking the issue here.

I'm going to keep this issue open as we should improve the error message to let users know that a required parameter is missing.

[parthea]

I'm going to close this issue as a response was provided in #145 (comment). Please open a new issue if the error re-appears.

[parthea]

I've confirmed that the error message says detail: "The required field \'parent\' is missing in the request. when the required parameter is missing.