jschoubben f85d1dc303 broker: the ADR 0047 wire shape, and the event failure paths
The AMQP adapter now honours the full contract: events published
persistent with metadata in headers; a durable per-consumer queue
(<node>.<module>.events) with prefetch and a dead-letter exchange
(mesh.events.dead); manual ack for at-least-once.

Failure paths, not just the happy one:
- a confirm channel, so a publish the broker never accepted fails the
  emit rather than vanishing — at-least-once starts at the emitter;
- a handler that keeps failing is requeued once, then dead-lettered
  (poison set aside, never looping);
- an undecodable body is dead-lettered at once — it never decodes on
  redelivery, and must not wedge the queue.

Binding-conformance tests against a disposable broker (a stand-in for the
mesh-hosted broker, ADR 0001): headers on the wire with a pure body, the
redelivery-limit dead-letter, and the poison-body dead-letter.

Claude-Session: https://claude.ai/code/session_01LrgweAeERJYBg88c5cKDzF
2026-09-04 00:26:09 +02:00

mesh-tools

The Novox Mesh tool runtime — the per-node process that makes a module's tools actually serve.

A module ships its tools (built on @novox/mesh-sdk); this runtime is what loads them and puts them on the mesh. It:

  1. connects the mesh broker (novox/hq ADR 0001) — a concrete AMQP implementation of the sdk's Broker contract;
  2. imports the assigned modules' compiled tool entrypoints, each of which registers its tools as it loads;
  3. serves them through the sdk's serveTools harness, answering tools.invoke over the broker.

Everything hard — dispatch, collection, duplicate-name safety — is the sdk's. This is the thin wrapper that binds the broker and loads the modules. Keeping the AMQP client here, out of the sdk, is deliberate: a broker-client change never rebuilds a module (ADR 0044).

Running it

MESH_BROKER_URL     amqp://…              the mesh broker
MESH_TOOL_MODULES   /a/tools/index.js,…   the assigned modules' compiled tool entrypoints

node dist/main.js, or the container (Dockerfile). On a node the host resolves both variables and starts it like any other supervised workload.

Verified

npm test stands up LavinMQ (the mesh's broker) and proves the whole path over real AMQP: the runtime serves a registered tool, a separate connection invokes it by name and gets the result, and an unknown tool is refused over the wire.

S
Description
Novox Mesh — the tool runtime. Binds the mesh broker (AMQP) and serves the assigned modules' tools through the sdk harness.
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