mirror of
https://github.com/MacRimi/ProxMenux.git
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37 lines
1.6 KiB
Python
37 lines
1.6 KiB
Python
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"""VM disk usage from the QEMU guest agent counts each filesystem once."""
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import ast
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from pathlib import Path
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import unittest
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SCRIPTS = Path(__file__).resolve().parents[1] / "AppImage/scripts"
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def compute():
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tree = ast.parse((SCRIPTS / "flask_server.py").read_text())
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nodes = [node for node in tree.body
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if (isinstance(node, ast.FunctionDef) and node.name == "_compute_vm_disk_from_fsinfo")
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or (isinstance(node, ast.Assign) and any(getattr(t, "id", None) == "_VM_FS_SKIP_TYPES" for t in node.targets))]
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namespace = {}
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exec(compile(ast.Module(body=nodes, type_ignores=[]), "flask_server.py", "exec"), namespace)
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return namespace["_compute_vm_disk_from_fsinfo"]
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def fs(mountpoint, name, total, used, **disk):
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return {"mountpoint": mountpoint, "name": name, "type": "ext4", "total-bytes": total,
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"used-bytes": used, "disk": [{"bus": 0, "target": 0, "unit": 0, **disk}]}
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class VmDiskFromFsinfo(unittest.TestCase):
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def test_partitions_of_one_disk_without_dev_are_all_counted(self):
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# Alpine's agent reports no `dev`: /boot and / share the disk fields.
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result = compute()([fs("/boot", "sda1", 264371200, 29093888), fs("/", "sda3", 27736297472, 6119866368)])
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self.assertEqual(result, (29093888 + 6119866368, 264371200 + 27736297472))
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def test_bind_mounts_of_one_filesystem_are_counted_once(self):
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mounts = [fs(path, "sda8", 1000, 400, dev="/dev/sda8") for path in ("/mnt/data", "/etc/hosts", "/var/lib/docker")]
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self.assertEqual(compute()(mounts), (400, 1000))
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if __name__ == "__main__":
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unittest.main()
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