| Filename | Latest commit message | Latest commit date |
|---|---|---|
a248db1fa2
`EnsureAgentIdentity` answered `AlreadyExists` whether it had added the agent marker to an existing subject or done nothing at all, and the controller discarded the answer outright. So the one case worth telling a human about — a subject that was NOT an agent a moment ago — could not survive the socket, let alone reach a log. `Healed` is a variant rather than a field on `AlreadyExists` because a field is ignorable: adding a variant makes every existing match fail to compile until its author decides what a heal means. That is the property the old shape lacked. The store cannot tell a pre-marker agent identity from a human operator account created without a group — both are `groups: []`. So this is either the intended migration or an agent joining a person's live SSO account, and only the caller has the context to tell them apart. Gated by state/gate-3549-heal.sh (8 arms + mutation): the mutation collapses Healed back and reddens the discriminating arm while leaving the anti-noise arm green. The W' control asserts exactly one warn in the whole run, so a build that warned on every routine ensure would fail. |
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| .. | ||
| src | ||
| Cargo.toml | ||
| README.md | ||
swarm-controller
The swarm-level daemon. Where hive-c0re owns the agents on one host, this
owns what is true across hives — so a swarm runs one of them and most hives
leave it off.
Opt-in per host via services.hyperhive.swarm.controller.enable, which is
deliberately not derived from services.hyperhive.enable: turning it on is
a statement about swarm topology, not about whether hyperhive is installed.
What it does today
Serves one /health endpoint and holds no state.
That is the whole intent of the first slice. The point is to make the unit
real — service user, runtime and state directories, socket, nginx
reachability — so the swarm-level surfaces that follow have somewhere to land.
Inventing those surfaces before they are agreed would bake in a shape nobody
chose. See #3066 and the hyperhive.swarm consolidation epic.
Why a unix socket, not a port
The hive-gateway's nginx is the only intended client and reaches the socket through a bind-mount. A listener that is never bound to an address cannot be reached from off-host by mistake.
The socket path is services.hyperhive.swarm.controller.socketPath, default
/run/swarm-controller/controller.sock, exported to the process as
SWARM_CONTROLLER_SOCKET.
⚠️ The socket's directory is its access control
The socket is 0666. It has to be: nginx runs as a different user and
connect(2) needs write. This matches how hive-c0re publishes the per-agent
sockets, and rests on the same argument — "the bind source dir is per-agent on
host so blast radius is unchanged."
What keeps that safe is that the directory holds one socket. So:
Never point
socketPathat a directory that carries anything else./run/hyperhiveabove all — it holdshost.sock, the host admin socket. Pointing nginx at that directory to reach this socket would put the admin socket within its reach too.
nginx is a host service, so nothing narrows what it can reach except the directory itself — that is the whole of the access control. A unit test pins the default path so a tidying edit fails instead of reviewing cleanly.
RuntimeDirectoryPreserve=yes and the daemon's stale-socket unlink on start are
a pair: preserving the directory without the unlink means bind fails with
EADDRINUSE after a restart.
Packaging
Built by the workspace derivation and extracted as its own package
(nix build .#swarm-controller). Deliberately not in nix/packages'
daemonBins — that list is the core stack and drives the bundle
services.hyperhive.c0re.package points at, so folding this in would put a
swarm-scoped service into every hive's closure.