Every module named its events the way the old bus spelled a routing key —
`module.<module>.<verb>`. Design 29 says a module names an event locally and the
mesh works out where it lands, so all 37 were stale against a rule already
decided. On the new bus that derives into a namespace belonging to a module
called "module", so no cross-module subscription in the mesh matched anything:
nothing failed, nothing reacted (novox/hq 04-ISSUES/127).
36 manifests converted, and 43 files of module code with them. The code mattered
as much as the manifests: the runtime builds the subject from what `emit()` is
handed, so a converted manifest with unconverted code would have had the
permission and the subject disagree.
Three things the new check found on the way:
- `photos` emitted an event its manifest never declared, which the new bus refuses
outright. Declared.
- `showcase` waited for an event nothing emits, so its demo could never be
triggered — only `showcase` may publish under its own name. It emits both halves
now.
- `distribution` declared an event named after a different module. It emits
`image.pushed` under its own name. An event about a *role* belongs on the seat,
where the name outlives whoever holds it, but the sdk has no way to publish on a
seat yet, so that stays recorded rather than declared.
The audit logger's "everything" pattern is `**` rather than the old bus's `#`.
Ten manifests claim mesh-* names now. What they PROVIDE is unchanged: gitea
still provides git and npm-package-registry, and a consumer requires the
interface, not the seat.
hq ADR 0107 / issue 115. HAL's own postgres and lavinmq both used a
directory bind (./db-data, ./data) for exactly this data -- the mesh's
adoption of them, three weeks ago, switched to a named Docker volume
instead, and searxng/distribution followed the same pattern since.
A named volume survives ordinary container recreation, same as a
directory bind -- that was never the problem. The problem is everything
else: docker rm -fv, docker volume rm, and docker system prune --volumes
all target it (one flag away from the docker rm -f this migration already
uses routinely); it is invisible to every tool this migration has used all
night (ls, find, grep across /var/lib, /services); and nothing outside
Docker's own volume machinery can back it up or notice it growing.
mesh-store carries the sharpest version: every database migrated tonight,
including keycloak's, live inside it.
Data already copied and verified on novox before this merges:
- mesh-registry-data -> /var/lib/mesh-registry (11G, diff -rq clean)
- mesh-broker-data -> /var/lib/mesh-broker (37M, cp -a)
- mesh-broker-tls -> /var/lib/mesh-broker-tls (12K, cp -a)
- mesh-store-data -> /var/lib/mesh-store (1.7G) -- mesh-store stopped
cleanly first, so the final copy is crash-consistent, not a live-file
copy of a running postgres; diff -rq clean after.
- searxng/valkey: not yet assigned anywhere, manifest-only fix, nothing
to copy.
Old named volumes left in place, not deleted, as the rollback path.
Review of the registry work found it node-scoped: a second `distribution` on another
machine resolved cleanly there, and only afterwards did the mesh notice `artifact-store`
offered by two nodes, with every consumer elsewhere refusing to choose. Worse, a node-scoped
requirement with one candidate installs that candidate, so anything that wanted the store
beside it would have raised a fresh, empty store on the wrong machine first.
There is one store in a mesh, which was already the effective rule; the claim now says it
where a second one is assigned, by name, instead of leaving consumers to discover it.
A module's identity is the software it is (ADR 0040). Two were named after the
job instead, and the job already had a name.
firewall installs the nftables package and runs nftables.service. The seat it
claims is the-packet-filter, which is correctly named for the role. Calling the
module firewall named neither the software nor the provision, and promised that
any firewall could sit there — the false genericity the naming rule forbids.
registry runs Distribution, the OCI reference implementation, and provides
artifact-store. So registry was a third name for a thing that already had two,
which is how one word ended up meaning the module, the software and the concept
in the same paragraph.
The capability stays firewall, and correctly: a capability IS a functionality, so
a node having one and fail2ban requiring one are both right. Only the module
moves.
Claude-Session: https://claude.ai/code/session_01D6qtiYU3P9jk3pnAXyAFyx
jschoubben