Commit Graph
8 Commits
Author SHA1 Message Date
jschoubben b5b68e8852 Design 25: a host directory bind, not a named volume
Issue 115 is resolved and converted four modules away from named volumes;
the bus's own data is not the place to bring one back. Also: NATS carries
TLS on the client port rather than beside a plaintext one, so there is no
5671/5672 pair to mirror.
2026-09-26 19:34:54 +02:00
jschoubben 814c9e563f The bus is the only broker; step 1 starts
A module does declare requirements the provisioner fulfils — but the broker
it gets that way is a private vhost, the analog of a database, not the
mesh's bus. Two modules of the new mesh depend on it, so the compatibility
broker was never single-purpose and its retirement would have stranded them.

NATS is the heart: one bus, a module's messaging is subjects on it scoped by
what it declares, and no module is handed a server of its own. The seat
delivers nothing; the interface retires with the broker. Also closes the
EVENTS question — one stream, on the bootstrap argument, not preference.

Designs 25 and 28 go in-progress: step 1 is starting.

The insight check caught a false positive on its own first real use — its
bold-run pattern crossed newlines and joined an unrelated `**` to the
marker. Constrained to one line, still catching all four bad shapes.
2026-09-26 19:26:07 +02:00
jschoubben 77a1493df4 Renumber to 0116: another record took 0115 on main
PR #133 landed a different 0115 while this branch was open. The bus record
is now 0116, with every citation in designs 19, 25, 28 and the index
following it.

Note: cycle.py and records.py both fail on main as merged, on that record —
nothing cites it, and it rests on 0112, which is still proposed. Both
pre-date this branch and are left for their own change.
2026-09-26 18:56:34 +02:00
jschoubben 1c808898a5 Allow progressive insight, and apply two to the bus record
A record can assert a fact that goes stale while the decision it supports
stays right. Superseding for that buries a sound record under a second one
and makes every reader work out which is live. So a correction of fact is
now made in place, marked and dated, with the old wording quoted — bounded
by three conditions and checked by records.py, which fires on an unmarked,
undated or back-dated note. Judgements still supersede.

Applied to 0115: no conformance suite exists to recapture, and the full
genesis bed cannot run until the links exist. Designs 25 and 28 follow.
2026-09-26 18:39:38 +02:00
jschoubben 6ab113e6c6 Break the bus work down, measured, in dependency order
Counting the surface first changed the plan twice: the genesis bed cannot run
until the links exist, so it belongs to step 4, and there is no conformance
suite to recapture — step 3 builds one against the current bus before moving
it. Both corrections are recorded in the breakdown rather than edited into
ADR 0115. Also indexes design 25, which was never listed.
2026-09-26 18:24:14 +02:00
jschoubben fe0c1e9da2 Divide the bus work into five steps, each proved on its own
The NATS change was recorded as one undivided item, which hid three gaps:
a mesh already running had no adoption path, the protocol specification did
not know its transport was being replaced, and nothing was runnable until
everything was. Dividing it is what surfaced them.
2026-09-26 18:19:56 +02:00
jschoubben 6abfec7433 Design 25: address first review's four findings before any code
Fixes, each named where it was wrong:

- reload-on is a service field; a container only has restart-on, which
  recreates. Cited precedent (registry-trust-reload) is a service resource,
  not a container. Fix: nats-server's own SIGHUP reload, triggered by an
  in-image entrypoint watching a directory-mounted config file (issue 103's
  recreate-on-change applies to a directly-mounted file, not a directory's
  contents) -- asks nothing new of the host.
- A JetStream-delivered message's Reply field is already claimed by the
  consumer's own ack address, so a responder using it answers nobody. Fix:
  every CONTROL message needing a reply carries its reply subject in its own
  payload; the controller publishes there explicitly, never via Respond().
  Enrolment is the case this design actually depends on, so it's fixed there
  too, not just noted.
- The listed permissions never granted publish on a durable consumer's own
  ack-reply subject -- a module could receive but never ack, so every
  message redelivers forever. Fixed with a scoped grant per module's own
  consumer.
- One account (a deliberate choice, kept) means inbox privacy is the
  permission list or nothing. The design granted 'its reply inbox' without
  scoping it, which read as any user reaching any inbox. Fixed: each user's
  inbox prefix is derived from its own identity and its permissions name
  only that prefix.

New open question from this revision, not closed: whether the in-image
watch-and-SIGHUP shape belongs in mesh-sdk if a second module ever needs it.

Checks pass (records.py, cycle.py, index.py).
2026-09-24 13:53:53 +02:00
jschoubben 0c433d51ad Design 25: the bus on NATS — subjects, streams, accounts as configuration, enrolment, a person's client, the cutover, the beds
The architecture ADR 0106 asks for, proposed for review before any code.
2026-09-23 23:42:42 +02:00