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FabledSteward/tests/plugins/host_agent/test_mcp_tools.py
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bvandeusenandClaude Opus 5.5 1ba4784fa6
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fix(maintenance): check first, drain before a Docker upgrade, wait 5 min after a drain, see containers back (#6098)
On 2026-10-18 an update on VDNT-Docker02 restarted the Docker daemon six
seconds in, before the drain that came only with the reboot, and every
container on the node stopped. Docker's own packages restart the daemon from
their install scripts; needrestart's list-only mode doesn't stop that.

- The helper gains a `check` action (agent 1.24.0): a dry run of the update
  for each package manager, whether Docker is among it, and the running
  containers outside the swarm with their restart policies.
- A swarm node is drained before an update that upgrades Docker, else only
  before a reboot, and at most once a job.
- After a drain the job settles 5 minutes before the update or reboot.
- Once the work is over, the containers that ran outside the swarm must be
  seen running again within 10 minutes, or the job fails naming them.
- An older agent gets no check and its job runs as before.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-19 10:44:45 -04:00

48 lines
2.4 KiB
Python

"""The host_agent plugin's MCP tools."""
from datetime import datetime, timedelta, timezone
from types import SimpleNamespace as NS
from unittest.mock import MagicMock
import plugins.host_agent as agent_plugin
from plugins.host_agent.mcp_tools import agent_state
NOW = datetime(2026, 10, 6, 12, 0, tzinfo=timezone.utc)
def test_agent_state():
assert agent_state(NS(last_seen_at=None), NOW, 180) == "pending"
assert agent_state(NS(last_seen_at=NOW - timedelta(seconds=60)), NOW, 180) == "reporting"
assert agent_state(NS(last_seen_at=NOW - timedelta(minutes=10)), NOW, 180) == "stale"
def test_plugin_exposes_the_mcp_hooks():
reg = MagicMock()
agent_plugin.register_mcp_tools(reg)
assert [c.args[0].__name__ for c in reg.call_args_list] == [
"list_agents", "list_maintenance_plans", "get_maintenance_job", "run_maintenance"]
roles = {c.args[0].__name__: c.kwargs["role"] for c in reg.call_args_list}
assert roles["run_maintenance"].value == "admin" # as Update now on the page
assert roles["get_maintenance_job"].value == "viewer"
assert callable(agent_plugin.mcp_overview)
def test_a_job_row_says_what_it_did_and_when_it_gives_up():
from plugins.host_agent.mcp_tools import _job_row
job = NS(id="j1", host_id="h1", state="rebooting", state_at=NOW - timedelta(minutes=5),
reboot_policy="if_required", packages=12, reboot_needed=True, back_at=None,
node_id="n1", drain_host_id="h2", detail=None, created_by=None, run_id="r1",
created_at=NOW - timedelta(minutes=20), finished_at=None,
drained_at=NOW - timedelta(minutes=11), docker_update=False,
checked={"pending": 12, "docker_packages": [], "containers": []})
row = _job_row(job, {"h1": "web-1", "h2": "mgr-1"}, NOW)
assert (row["host"], row["drained_by"], row["label"], row["active"]) == (
"web-1", "mgr-1", "Rebooting", True)
assert row["started_by"] == "maintenance plan" and row["state_age_s"] == 300
assert row["gives_up_at"] == (NOW + timedelta(minutes=25)).isoformat().replace("+00:00", "Z")
done = NS(**{**job.__dict__, "state": "done", "back_at": NOW, "finished_at": NOW,
"created_by": "u1", "run_id": None})
row = _job_row(done, {"h1": "web-1", "u1": "alice"}, NOW)
assert row["summary"] == "Done: 12 packages updated, rebooted"
assert row["started_by"] == "alice" and row["gives_up_at"] is None and not row["active"]