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The root cause of submit() returning null container id was because _wait_for_status can raise inside create_container, between the zun creation and returning the zun object. By adding the zun container to a custom exception inside create_container, submit() can still populate self.id and self._status from the zun object. This also makes it possible to set details from the zun container status_reason and status_detail fields. Needs Review: submit() now raises a ContainerCreateWaitError, not ResourceError, which may break existing code which depends on handling that error. We might want to instead reraise a ResourceError from the new custom error.
Mark-Powers
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Feb 13, 2026
Small change, container.submit() now raises a ResourceError, with the human readable cause from the zun container. For debugging, the traceback includes the original WaitError with more info. This should preserve compatability with anything that currently calls "submit" inside a try except block.
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This adds unit-tests to cover some of the edge cases of container.submit()
there's a lot of branching logic, and the return types vary per branch, but this covers the most important current behavior and known issues.