mirror of
https://github.com/MacRimi/ProxMenux.git
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MacRimi
41ae752da1
- New service that starts again an OCI application that stopped on its own, such as Frigate after Save & Restart. A stop or shutdown asked by the user, a backup, a migration and a ProxMenux operation are never undone. - The installer asks it in both modes and proposes what the recipe declares; it is changed from the management menu or with the Watchdog switch of the container modal in the Monitor. - Notifications when the watchdog restarts an application and when it keeps stopping. - The service is recorded in the change journal, and the feature is documented.
99 lines
3.8 KiB
Python
99 lines
3.8 KiB
Python
"""What the VM & LXC modal needs to know about an OCI instance.
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Read-only view of the installation record OCI manager Apps keeps for every
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container it created: whether the container is one, whether it belongs to a
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multi-container application, whether it uses host directories (which its
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backup does not revert), whether an operation is pending, whether it is
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restarted when it stops on its own and whether it was restored from a backup
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and is not registered on this host yet. Nothing here
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changes the record or runs inside the container.
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"""
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from __future__ import annotations
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import json
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import os
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import re
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import socket
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import oci_console_logs
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ROOT = "/usr/local/share/proxmenux/oci/instances"
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def _record(vmid: int) -> dict | None:
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path = os.path.join(ROOT, str(int(vmid)), "oci-compose.json")
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try:
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with open(path, encoding="utf-8") as handle:
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record = json.load(handle)
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except (OSError, ValueError):
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return None
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return record if isinstance(record, dict) else None
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def _installation(vmid: int) -> str | None:
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"""The installation the container says it belongs to: the mark OCI manager
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Apps leaves in its notes, which a backup keeps."""
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path = f"/etc/pve/nodes/{socket.gethostname().split('.', 1)[0]}/lxc/{int(vmid)}.conf"
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try:
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with open(path, encoding="utf-8", errors="ignore") as handle:
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text = handle.read().split("\n[", 1)[0]
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except OSError:
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return None
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match = re.search(r"^#.*proxmenux-instance=([0-9a-f-]{36})(?![0-9a-f-])", text, re.MULTILINE)
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return match.group(1) if match else None
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def _unrecoverable(vmid: int, installation: str) -> bool:
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"""A restored container that carries no copy of its record: the menu
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found nothing to recover it from and left it as an ordinary container."""
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try:
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with open(os.path.join(ROOT, ".unrecoverable.json"), encoding="utf-8") as handle:
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value = json.load(handle)
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except (OSError, ValueError):
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return False
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return isinstance(value, dict) and value.get(str(int(vmid))) == installation
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def _host_dirs(record: dict) -> bool:
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mounts = (record.get("deployment") or {}).get("mounts") or []
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return any(isinstance(m, dict) and m.get("type") == "host-bind" for m in mounts)
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def info(vmid: int) -> dict:
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vmid = int(vmid)
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result = {
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"vmid": vmid,
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"oci_instance": False,
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"console_log": oci_console_logs.configured_log(vmid) is not None,
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"stack": False,
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"primary_vmid": vmid,
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"members": [],
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"host_directories": False,
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"pending": False,
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"restored": False,
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"watchdog": False,
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}
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record = _record(vmid)
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installation = _installation(vmid)
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if installation and (record is None or record.get("installation_id") != installation):
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# Restored from a backup: the record stayed on the host it came from.
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result["restored"] = not _unrecoverable(vmid, installation)
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return result
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if record is None:
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return result
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primary_id = int((record.get("stack_member") or {}).get("primary_vmid") or vmid)
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primary = record if primary_id == vmid else (_record(primary_id) or {})
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members = [int(m["vmid"]) for m in (primary.get("stack") or {}).get("members") or []
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if isinstance(m, dict) and str(m.get("vmid", "")).isdigit()]
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records = [record] if not members else [r for r in (_record(m) for m in members) if r]
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result.update(
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oci_instance=True,
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stack=bool(members) or bool(record.get("stack_member")),
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primary_vmid=primary_id,
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members=members,
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host_directories=any(_host_dirs(r) for r in records),
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pending=bool(record.get("pending_transaction") or primary.get("pending_stack_transaction")),
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watchdog=all((r.get("deployment") or {}).get("watchdog") is True for r in records),
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)
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return result
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