hyperhive/hive-forge-notify
Repository files (latest commit first)
Filename Latest commit message Latest commit date
atlas 7a826f9ee2 refactor(sock): one socket client, retry as a policy value
Six places in the tree hand-rolled the same connect / write one JSON
line / read one JSON line back. Two of them — the harness serve loop's
client and the MCP server's — were byte-identical apart from a six-line
wrapper, ~145 lines of literal copy-paste. The other four each
reimplemented a subset, and the subsets had drifted: some named the
socket path in their errors and some did not, one classified transient
against fatal failures and the rest retried nothing at all, two drained
the response and two decoded it.

That duplication was defended when the daemons were split out, on the
grounds that a daemon's socket etiquette should stay visible in the
crate that depends on it. The etiquette genuinely does differ. The code
does not, and five copies is where "each daemon documents its own
etiquette" stops paying for itself.

`hive-sock-client` now owns the transport once, generic over the
request and response types so it is protocol-agnostic: the host-served
control socket and the harness's in-agent socket both use it with their
own wire-type crates. The two real differences become values instead of
forks. Retry is `Retry::RideOutRestart` (2/4/8/16/30s, sized to ride out
a service restart) for callers with no natural retry of their own, or
`Retry::None` for callers already inside a poll loop where the poll
interval is the retry — and the reason each caller picked one is a
comment at the call site rather than a reimplementation. The response is
either decoded (`request`) or half-closed and drained (`notify`, where
the drain exists so the server's write-back doesn't land on a closed
socket). Whether a failure propagates or is logged and swallowed stays
at the call site, because that is the caller's choice and not a property
of the transport.

Errors always name the socket path now, everywhere. That detail is
load-bearing: a permission problem on a socket that reads as "is the
daemon running?" sends the operator to fix the wrong thing.

The transient-against-fatal enum is gone rather than moved. Serialising
happens before the retry loop and deserialising after it, so only
connect, I/O and short-read failures can reach the loop at all — a
deterministic failure is now unretryable by construction instead of by
classification.

It is deliberately a new crate and not part of `hive-agent-sock`. The
`*-sock` crates are pure wire types by convention — `hive-agent-sock`
depends on serde and nothing else — and the two largest copies talk to
the host socket, whose types live in a different crate entirely. A
transport in either wire-type crate would drag tokio into it and point
the wrong way besides.

No wire-format change: same JSON line in, same line out.
2026-07-26 22:44:48 +02:00
..
src refactor(sock): one socket client, retry as a policy value 2026-07-26 22:44:48 +02:00
Cargo.toml refactor(sock): one socket client, retry as a policy value 2026-07-26 22:44:48 +02:00
README.md refactor(hive-agent): split the forge notification poller into its own crate 2026-07-26 21:30:29 +02:00

hive-forge-notify

Per-agent Forgejo notification poller: a long-running daemon (hive-forge-notify) that watches the agent's unread notification list and turns each thread into a todo the harness surfaces in get_loose_ends. This is why an agent wakes up when someone comments on its issue or requests its review.

When to use it

Look here when changing what a forge notification says when it reaches an agent, or when it reaches one at all: the poll cadence, the self-echo filter, the comment / review / new-item / state-change wrapper formats, body-excerpt truncation, and the assigned-issue rollup all live in notify.rs. The behaviour contract — activation gates, filtering rules, the review-request override — is documented in docs/forge.md, "Notification poller".

Shape

One bin, three modules:

  • main.rs — argument-free entry point. Reads HIVE_AGENT_SOCKET, initialises tracing, hands off to notify::run.
  • notify.rs — the poller: forge client setup, the 30s loop, the formatters, mark-read, and the in-process delivery-dedupe map.
  • todo_client.rs — one-shot JSON-line client for the harness's in-agent socket. No retry schedule of its own; see the module doc.

Why it is a separate process

It used to be a tokio::spawn inside the hive-agent serve loop. It never needed anything from the serve loop except a socket path, and running it in-process meant a harness restart also took forge notifications down, and linked the whole forge/HTTP dependency tree (forgejo-api, reqwest, time, url) into the serve-loop binary. It is now a sibling daemon alongside hive-bash-daemon and hive-matrix-daemon, with the same contract: it talks to the harness over the in-agent todo socket and nowhere else.

Forge's own read-state is the durable, cross-rebuild record of what has been delivered — there is no persisted cursor to migrate or corrupt. A restarted poller re-scans only the genuinely-still-unread set, which is tiny by construction because delivery marks the thread read.