hyperhive/swarm-controller
Repository files (latest commit first)
Filename Latest commit message Latest commit date
atlas 295925abb6 swarm-controller: don't fold every 422 into "already exists" on user/repo create
Forgejo answers 422 for six different causes on admin user create
(ErrUserAlreadyExist, ErrEmailAlreadyUsed, ErrNameReserved,
ErrNameCharsNotAllowed, ErrEmailInvalid, ErrNamePatternNotAllowed) and
several on repo create, but is_already_exists() treated every one of
them as a conflict. A reserved or otherwise-refused name silently
folded to Done, so CreateForgeUser reported success with no user
created, and the graph's real failure only surfaced one node later as
a misleading AddRepoMember error.

ensure_agent_user and ensure_org_repo now trust a 409 unconditionally
(folds_into_success) but confirm a 422 with a follow-up user_get /
repo_get before folding it to success; an unconfirmed 422 fails with
forgejo's own message at error level. Webhook registration still uses
the old is_already_exists — it has no comparable follow-up read, so it
is out of scope here.

Closes #4678
2026-09-24 13:45:51 +02:00
..
src swarm-controller: don't fold every 422 into "already exists" on user/repo create 2026-09-24 13:45:51 +02:00
Cargo.toml swarm: mint a per-agent queue credential beside the agent's store identity 2026-09-21 20:38:55 +02:00
README.md check-issue-refs: catch full forge issue URLs too, drop internal links from docs entirely 2026-09-09 21:15:28 +02:00

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.deploy.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 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.deploy.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 socketPath at a directory that carries anything else. /run/hyperhive above all — it holds host.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.