Exclusively lock Runners during code executions #1982
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So far, a programming group is always considered to be a learner. While we could, technically, consider it to be a teacher or an admin if all members have this role, this behaviour might have unintended side effects.
`node.parents` is not returning the parent nodes in a fixed order. Hence, we cannot use it but must travers the tree ourselves.
Previously, the same runner could be used multiple times with different submissions simultaneously. This, however, yielded errors, for example when one submission time oud (causing the running to be deleted) while another submission was still executed. Admin actions, such as the shell, can be still executed regardless of any other code execution. Fixes CODEOCEAN-HG Fixes openHPI/poseidon#423
mpass99
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Oct 31, 2023
mpass99
approved these changes
Oct 31, 2023
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Previously, the same runner could be used multiple times with different submissions simultaneously. This, however, yielded errors, for example when one submission time oud (causing the running to be deleted) while another submission was still executed.
Admin actions, such as the shell, can be still executed regardless of any other code execution.
Fixes CODEOCEAN-HG
Fixes openHPI/poseidon#423