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swarm-controller: render, lock and commit internal/meta

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A new update_meta node renders internal/meta's flake.nix with
hive-meta-flake, the renderer hive-c0re uses: hyperhive pinned to its
forge main, each custom agent a hive places pinned to its agent-configs
main, all over https, and the swarm-wide values from
SWARM_CONTROLLER_META_FLAKE (set by swarm-controller.nix from
services.hyperhive.swarm.*). The swarm builder locks it, and the
controller commits flake.nix and flake.lock in one commit and gives
every hive's forge account read on the repo. A render equal to the
committed flake.nix sends no lock and commits nothing.

It runs at start, when hyperhive's main moves, before the deploy of a
merged config PR and before the first deploy of a new agent; those
deploys now wait for it. agent_web_port moves into hive-meta-flake so
both callers compute the same port; hive-c0re re-exports it.

On deploy: internal/meta appears on the forge and follows every merge.
No hive builds from it yet.

Refs #4857
This commit is contained in:
atlas 2026-10-22 07:52:23 +02:00
commit 5950363a10
16 changed files with 970 additions and 41 deletions
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29
hive-c0re/src/lifecycle/mod.rs
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@ -53,34 +53,7 @@ pub fn container_claude_mount(name: &str) -> String {
/// willing to lose (other agents may delete them).
pub const CONTAINER_SHARED_MOUNT: &str = "/shared";
/// Web UI port range, shared by every agent including the manager.
/// Deterministic from the agent's name (FNV-1a hash mod range size), so the
/// dashboard can compute the same port without asking hive-c0re.
const WEB_PORT_BASE: u16 = 8100;
const WEB_PORT_RANGE: u16 = 900;
/// FNV-1a hash of a string — used by `agent_web_port`.
fn fnv1a(s: &str) -> u32 {
let mut hash: u32 = 2_166_136_261;
for b in s.bytes() {
hash ^= u32::from(b);
hash = hash.wrapping_mul(16_777_619);
}
hash
}
/// Per-agent web UI port — `WEB_PORT_BASE + FNV-1a(name) %
/// WEB_PORT_RANGE` for every agent including the manager. The port
/// allocation rule reads the same for every name; collisions are
/// possible (birthday paradox at ~30 agents) and the operator
/// resolves them by renaming an agent (different hash → different
/// port). Stable across hosts, restarts, and dashboard renders —
/// no state-file dance.
#[must_use]
pub fn agent_web_port(name: &str) -> u16 {
// Modulo of a u32 by a u16's value is guaranteed < u16::MAX, so try_from never fails.
WEB_PORT_BASE + u16::try_from(fnv1a(name) % u32::from(WEB_PORT_RANGE)).unwrap_or(0)
}
pub use hive_meta_flake::agent_web_port;
/// Extract the bridge gateway IP from `HIVE_NETWORK_SUBNET`.
///