`pydantic.ValidationError` in `list_clusters` due to invalid `maintenance.timeWindow` year (0000)

[h4m24]

Description

When calling the stackit.ske.api.DefaultApi.list_clusters method, a pydantic.ValidationError is raised during the deserialization of the API response. The error specifically points to the maintenance.timeWindow.end and maintenance.timeWindow.start fields, indicating that the year '0000' is out of range for a valid datetime object.

This suggests that the STACKIT SKE API is returning malformed datetime strings (e.g., 0000-01-01T06:00:00+02:00) for the maintenance windows of certain clusters, which Pydantic's strict datetime parsing cannot handle.

Steps to reproduce

1. Ensure you have the stackit-sdk-python installed and configured with valid credentials.

2. Use the following Python code snippet (or a similar one that iterates through projects and calls list_clusters):

   from stackit.ske.api.default_api import DefaultApi as ske_api
   from stackit.resourcemanager.api.default_api import DefaultApi as resource_manager_api
   from stackit.core.configuration import Configuration
   import os
   
   def main():
       config = Configuration(service_account_key_path="path/to/.stackit/credentials.json")
       resource_manager_client = resource_manager_api(config)
       ske_client = ske_api(config)
   
       # Replace with your actual container_parent_id
       projects_list = resource_manager_client.list_projects(container_parent_id="1231241-bcd8-123123-123123-123123")
   
       for project in projects_list.items:
           if project.lifecycle_state == "ACTIVE":
               print(f"Checking project: {project.name} ({project.project_id})")
               try:
                   # The error occurs here for specific projects/clusters
                   cluster_list = ske_client.list_clusters(region="eu01", project_id=project.project_id)
                   if cluster_list.items:
                       for cluster in cluster_list.items:
                           print(f"  - Found cluster: {cluster.name}")
                   else:
                       print("  No clusters found.")
               except Exception as e:
                   print(f"  Error processing project {project.name}: {e}")
   
   if __name__ == "__main__":
       main()

3. Run the script. The ValidationError should occur when attempting to list clusters for a project that has a cluster with the described malformed maintenance.timeWindow data.

Expected Behavior:

The list_clusters method should successfully return a list of cluster objects without raising a ValidationError. Datetime fields in the API response should contain valid dates that can be parsed by standard datetime libraries and Pydantic.

Actual Behavior:

A pydantic.ValidationError is raised, preventing the successful retrieval of cluster information for projects where the maintenance.timeWindow fields contain the year '0000'.

Environment:

• Python Version: 3.11.x
• stackit-sdk-python version: version = "1.0.0"

[rubenhoenle]

Hi @h4m24,

thanks for your bug report. I was able to reproduce the issue and created a bug ticket in our internal backlog.

We will update this issue once this bug is fixed.

Best regards
Ruben