rustls is built with both `ring` (async-nats's `ring` feature) and
`aws-lc-rs` (reqwest's `rustls` feature), so it cannot pick a
process-level default by itself. Since the queue started requiring TLS
(1d261b3f), async-nats builds its config with `ClientConfig::builder()`,
which panics without an installed default. The panic kills the async-nats
connector task, and every queue client (swarm-controller, hive-c0re, all
hive-agents) has sat in `Pending` since the 2026-09-25 23:04Z deploy.
Add `swarm_queue_client::install_crypto_provider()`, which installs
aws-lc-rs and ignores the "already installed" error. It is called first in
`main` of every binary that links async-nats: hive-agent, hive-c0re,
swarm-controller, swarm-nats-auth. `connect()` also calls it, so a new
binary that dials through this crate is covered without remembering to.
aws-lc-rs because reqwest already falls back to it when no default is
installed, so HTTPS in these processes keeps its current provider. The
other rustls users in the tree reach it only through reqwest, which never
panics here.
Closes#4738
The bucket has two ends in two crates: a hive writes its own key, the
controller reads every key. `swarm-controller` declared the name as a
private const with a doc comment arguing that "reader and writer must
name the same bucket" — an argument the writer, in another crate, could
not obey.
The name is the mild half. Both ends do get-or-create, because either may
come up first on a fresh swarm and neither can assume the other has run.
Two `Config`s that drift means whichever end created the bucket wins and
the other's `get_key_value` succeeds against a bucket it did not ask for:
no error, no log, just a retention policy nobody chose. Sharing the
constructor gives that race one outcome.
Behind a default-off `kv` feature, so the crate's other consumer — the
auth-callout responder, which speaks the connect and nothing else — still
pulls neither `jetstream` nor `kv`. That was the actual reason the
feature was excluded when this crate was extracted; the flag preserves
it. The surface is deliberately narrow: one bucket's name and creation
config, not a general KV facade.
Operator ruling: libs should not use anyhow. The queue connect was moved
here verbatim from swarm-controller, which is a binary, so it arrived
still wearing a binary's error handling — the move changed what the code
is without changing how it reports.
Callers get variants they can match on, split by what an operator does
about them: a half-configured environment is a deployment bug, a refused
token is an identity-provider config problem, an unreachable queue is a
network one. The binaries that consume this keep anyhow and `?` converts,
so nothing downstream is more verbose for it. Same split hive-claude uses.
One thing anyhow was doing unpaid: the auth callback hands async-nats a
plain string, and a Display that stops at the top message drops the cause
— the half that says why the mint failed. `chain()` walks the source
chain, which is what `{:#}` was doing before.
A hive publishing its own status needs the same connect the controller
already has - mint an authelia token, present it at CONNECT for the
callout responder, let async-nats re-run the callback per attempt. Only
the use differs: the controller reads, a hive writes.
Copying it would put credential handling in two places, and a
token-refresh fix would then have to be found twice. That is the same
reasoning that already put hive-sock-client in its own crate rather than
in each daemon that speaks to a unix socket.
`from_env` takes a prefix rather than hardcoding SWARM_CONTROLLER_*: the
variables belong to the consuming unit, since a NixOS module sets them
alongside its other options. What is shared is the RULE - all four
together or none at all - not the spelling. The half-set case gains a
test, because it is the case the rule exists for and it previously had
none.
No jetstream/kv feature on the crate: it ends at a connected client, and
what a consumer does with it should be visible in that consumer's own
Cargo.toml.
Behaviour-preserving, and proven that way rather than by inspection: the
full behavioural gate (real nats-server, credential rotation, mutation)
is 20/0 unchanged, and the controller's own tests still pass.
