Author SHA1 Message Date
jschoubben 3f0a174392 nats declares the upstream image it is built from
The recipe started FROM the upstream server's digest directly, and the build machine
refuses that: every base is declared under build.on and copied into the mesh's own
store before a build, so a build never reaches out to a registry the mesh does not
run (novox/hq ADR 0097). Found the first time the module was built on a real mesh.

Same digest, now declared as NATS_BASE and arriving as a build argument; the
Dockerfile says where it comes from and why the digest is the index's.
2026-09-27 23:40:16 +02:00
jschoubben c0edebefb9 Merge pull request 'lavinmq, amqp-ping and amqp-email-forwarder leave the catalogue' (#120) from feat/amqp-leaves-the-catalogue into main 2026-09-27 21:30:19 +00:00
jschoubben b9605a6e3b lavinmq, amqp-ping and amqp-email-forwarder leave the catalogue
AMQP is not a provision (novox/hq ADR 0131, design 28 task 5.4). These were the
only three manifests that named it: the broker that provided it, a proof that a
grant worked end to end, and a forwarder reading mail off a queue. Removed, not
converted — a module that wants messaging wants the mesh's bus, reached through
the sdk and named by the mesh-broker seat, and either of the last two is re-done
against that if wanted, as a new module under the record.

The controller refuses a manifest naming amqp from its next release, so these
could not be re-registered anyway. Nothing else in the catalogue referenced them.
2026-09-27 23:27:24 +02:00
jschoubben dca84d3bb4 Merge pull request 'lavinmq holds mesh-broker again, now the check reads the store' (#119) from restore/broker-claim into main 2026-09-27 20:24:22 +00:00
18 changed files with 11 additions and 1008 deletions
-56
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@@ -1,56 +0,0 @@
{
"module": "amqp-email-forwarder",
"version": "1",
"slug": "emailfwd",
"capabilities": [
"container-runtime"
],
"requires": [
"amqp"
],
"contributes": {},
"binds": {
"amqp": "/var/lib/amqp-email-forwarder/amqp.json"
},
"secrets": {
"amqp": "/var/lib/amqp-email-forwarder/amqp.secret"
},
"own-secrets": {
"smtp-user": "/var/lib/amqp-email-forwarder/smtp-user.secret",
"smtp-password": "/var/lib/amqp-email-forwarder/smtp-password.secret"
},
"resources": [
{
"id": "state",
"type": "directory",
"path": "/var/lib/amqp-email-forwarder",
"mode": "0700"
},
{
"id": "app-env",
"type": "file",
"path": "/var/lib/amqp-email-forwarder/app.env",
"mode": "0600",
"content": "AMQP_HOST=${bound:amqp:at}\nAMQP_PORT=${bound:amqp:port}\nAMQP_USER=${bound:amqp:as}\nAMQP_VHOST=EMAILDELIVERY_T\nAMQP_EXCHANGE=News.TransactionalEmailing.Command\nAMQP_QUEUE=email-forwarder\nAMQP_URL=amqp://${bound:amqp:as}:${secret:amqp}@${bound:amqp:at}:${bound:amqp:port}/EMAILDELIVERY_T\nSMTP_HOST=mail.novox.be\nSMTP_PORT=587\nSMTP_USER=${secret:smtp-user}\nSMTP_PASSWORD=${secret:smtp-password}\n"
},
{
"id": "net",
"type": "network",
"name": "amqp-email-forwarder"
},
{
"id": "app",
"type": "container",
"name": "amqp-email-forwarder",
"image": "registry-api.novox.be/novox/amqp-email-forwarder@sha256:f76d34646d9d3b2098c72688a63f6ae656f1888ffcb2f90a9c8dd2a44ad7f8af",
"network": "amqp-email-forwarder",
"env-file": [
"/var/lib/amqp-email-forwarder/app.env"
],
"restart-on": [
"app-env"
],
"secrets-in-environment": "the application's own code reads AMQP_URL, SMTP_USER and SMTP_PASSWORD from the environment (amqp-email-forwarder app.js); converting is that repository's change"
}
]
}
-31
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@@ -1,31 +0,0 @@
# amqp-ping's runtime: the tool runtime, carrying this module's compiled code.
#
# **Built from this module's own directory and nothing else.** The sdk and the tool runtime are not
# copied out of neighbouring checkouts — they are in the base image, which is published like any
# other artifact. That is what makes this buildable by the mesh from a repository and a path
# (novox/hq ADR 0069) rather than only on a workstation that happens to have the siblings.
#
# Two bases, named rather than pinned: the image this is COMPILED in, and the image it RUNS in.
# They are different images on purpose — the first carries a compiler and the second must not, or
# every running container would carry one it never invokes. The mesh answers both with the copies it
# holds, because a fingerprint written here would name one particular copy and no other mesh has it
# (novox/hq issue 044). Declared in module.json's `build.on`; deliberately no defaults, so a build
# nobody told stops here and says which module to build first.
ARG BUILD_BASE
ARG RUNTIME_BASE
FROM ${BUILD_BASE} AS build
# Compiled under /app/modules, so resolving `@novox/mesh-sdk` walks up to the base's own
# node_modules — the module is compiled against exactly the sdk it will run against.
WORKDIR /app/modules/amqp-ping
COPY . .
# The compiler is invoked by its real path, not through node_modules/.bin. Those are symlinks to
# a launcher that requires its library relatively, and the base image resolves them when copying —
# leaving a launcher whose relative require no longer points at anything.
RUN node /app/node_modules/typescript/bin/tsc client.ts index.ts \
--module NodeNext --moduleResolution NodeNext --target ES2022 --outDir dist
FROM ${RUNTIME_BASE}
COPY --from=build /app/modules/amqp-ping/dist /app/modules/amqp-ping/dist
# Declared rather than derived from which files happen to exist: the module knows what it serves.
ENV MESH_TOOL_MODULES=/app/modules/amqp-ping/dist/index.js
-191
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@@ -1,191 +0,0 @@
// amqp-ping's AMQP client — the demo consumer's own code (novox/hq ADR 0039). It speaks AMQP 0-9-1
// directly over a raw TCP socket (node:net), the way redis's client speaks RESP: the module carries
// NO npm dependency beyond @novox/mesh-sdk — no amqplib, no CLI in the image. It does exactly one
// thing, the round-trip that proves the grant works: connect, authenticate with PLAIN to the vhost
// the mesh named, declare a queue, publish one message and get it back.
//
// This is the consumer half of the `amqp` interface. It connects as the login the mesh derived
// (`${bound:amqp:as}`) with the password the mesh minted (`${secret:amqp}`) to a vhost of that SAME
// name — the provider named the vhost after the login, so the consumer must too. Nothing here is
// hardcoded: user AND vhost are both the bound login, and a wrong vhost is refused by the broker.
import { createConnection, type Socket } from "node:net";
import { readFileSync } from "node:fs";
const FRAME_END = 0xce;
const PROTOCOL_HEADER = Buffer.from([0x41, 0x4d, 0x51, 0x50, 0x00, 0x00, 0x09, 0x01]); // "AMQP" 0-9-1
export interface AmqpConn {
readonly host: string;
readonly port: number;
readonly user: string;
readonly password: string;
readonly vhost: string;
}
/** Build the connection facts from the environment the mesh's env-file set (see the module manifest). */
export function connFromEnv(env: NodeJS.ProcessEnv = process.env): AmqpConn {
const host = env.MESH_AMQP_HOST ?? "";
const port = Number(env.MESH_AMQP_PORT ?? "5672") || 5672;
const user = env.MESH_AMQP_USER ?? "";
const vhost = env.MESH_AMQP_VHOST ?? user; // the provider names the vhost after the login
const password = env.MESH_AMQP_PASSWORD ?? readMaybe(env.MESH_AMQP_PASSWORD_FILE);
if (!host || !user || !password) {
throw new Error(`amqp-ping: connection is not fully set yet (host=${host} user=${user} password=${password ? "set" : "unset"})`);
}
return { host, port, user, password, vhost };
}
// --- wire helpers ---------------------------------------------------------------------------------
function shortstr(s: string): Buffer {
const b = Buffer.from(s, "utf8");
const o = Buffer.alloc(1 + b.length);
o.writeUInt8(b.length, 0);
b.copy(o, 1);
return o;
}
function longstr(s: Buffer | string): Buffer {
const b = Buffer.isBuffer(s) ? s : Buffer.from(s, "utf8");
const o = Buffer.alloc(4 + b.length);
o.writeUInt32BE(b.length, 0);
b.copy(o, 4);
return o;
}
function u16(n: number): Buffer {
const o = Buffer.alloc(2);
o.writeUInt16BE(n, 0);
return o;
}
function u32(n: number): Buffer {
const o = Buffer.alloc(4);
o.writeUInt32BE(n, 0);
return o;
}
function frame(type: number, channel: number, payload: Buffer): Buffer {
const o = Buffer.alloc(7 + payload.length + 1);
o.writeUInt8(type, 0);
o.writeUInt16BE(channel, 1);
o.writeUInt32BE(payload.length, 3);
payload.copy(o, 7);
o.writeUInt8(FRAME_END, 7 + payload.length);
return o;
}
function method(channel: number, classId: number, methodId: number, ...parts: Buffer[]): Buffer {
return frame(1, channel, Buffer.concat([u16(classId), u16(methodId), ...parts]));
}
interface MethodWaiter {
classId: number;
methodId: number;
resolve: (args: Buffer) => void;
reject: (e: Error) => void;
}
/**
* Connect, authenticate to the vhost, declare a queue, publish one message and get it back. Returns
* the body that came back — the caller checks it equals what went out. Throws on any protocol error,
* including the broker's `NOT_ALLOWED` refusal of a vhost the login has no permission on (the
* isolation the provider builds, seen from the consumer's side).
*/
export function roundTrip(conn: AmqpConn, queue = "amqp-ping", payload?: string): Promise<string> {
const body = Buffer.from(payload ?? `ping-${Date.now()}`);
return new Promise<string>((resolve, reject) => {
const sock: Socket = createConnection({ host: conn.host, port: conn.port });
let buf = Buffer.alloc(0);
const waiters: MethodWaiter[] = [];
let lastBody: Buffer | null = null;
let done = false;
const fail = (e: Error): void => {
if (done) return;
done = true;
sock.destroy();
reject(e);
};
const expect = (classId: number, methodId: number): Promise<Buffer> =>
new Promise((res, rej) => waiters.push({ classId, methodId, resolve: res, reject: rej }));
sock.on("error", (e) => fail(e));
sock.on("close", () => fail(new Error("amqp connection closed before the round-trip completed")));
sock.on("data", (chunk: Buffer) => {
buf = Buffer.concat([buf, chunk]);
for (;;) {
if (buf.length < 7) return;
const type = buf.readUInt8(0);
const size = buf.readUInt32BE(3);
if (buf.length < 7 + size + 1) return;
const framePayload = buf.subarray(7, 7 + size);
buf = buf.subarray(7 + size + 1);
if (type === 1) {
const classId = framePayload.readUInt16BE(0);
const methodId = framePayload.readUInt16BE(2);
const args = framePayload.subarray(4);
const w = waiters.shift();
if (!w) continue;
if (w.classId === classId && w.methodId === methodId) w.resolve(args);
else w.reject(new Error(`expected method ${w.classId}/${w.methodId}, got ${classId}/${methodId}: ${args.toString("utf8")}`));
} else if (type === 3) {
lastBody = framePayload; // a content body frame
}
// type 2 (content header) and type 8 (heartbeat) need no handling for this round-trip.
}
});
sock.on("connect", () => {
void (async () => {
try {
sock.write(PROTOCOL_HEADER);
await expect(10, 10); // Connection.Start
const response = Buffer.concat([
Buffer.from([0]), Buffer.from(conn.user, "utf8"), Buffer.from([0]), Buffer.from(conn.password, "utf8"),
]);
// Connection.Start-Ok: empty client-properties table, PLAIN, the SASL response, locale.
sock.write(method(0, 10, 11, u32(0), shortstr("PLAIN"), longstr(response), shortstr("en_US")));
const tune = await expect(10, 30); // Connection.Tune
const frameMax = tune.readUInt32BE(2) || 131072;
sock.write(method(0, 10, 31, u16(tune.readUInt16BE(0)), u32(frameMax), u16(0))); // Tune-Ok, no heartbeat
sock.write(method(0, 10, 40, shortstr(conn.vhost), shortstr(""), Buffer.from([0]))); // Connection.Open
await expect(10, 41); // Open-Ok — authenticated and into the vhost
sock.write(method(1, 20, 10, shortstr(""))); // Channel.Open
await expect(20, 11);
// Queue.Declare: reserved, queue, bits(auto-delete=1), empty arguments table.
sock.write(method(1, 50, 10, u16(0), shortstr(queue), Buffer.from([0b00001000]), u32(0)));
await expect(50, 11);
// Basic.Publish to the default exchange, routing-key = queue; then content header + body.
sock.write(method(1, 60, 40, u16(0), shortstr(""), shortstr(queue), Buffer.from([0])));
const bodySize = Buffer.alloc(8);
bodySize.writeBigUInt64BE(BigInt(body.length), 0);
sock.write(frame(2, 1, Buffer.concat([u16(60), u16(0), bodySize, u16(0)]))); // content header, no properties
sock.write(frame(3, 1, body)); // content body
await new Promise((r) => setTimeout(r, 200));
lastBody = null;
sock.write(method(1, 60, 70, u16(0), shortstr(queue), Buffer.from([1]))); // Basic.Get, no-ack
await expect(60, 71); // Get-Ok (a Get-Empty would arrive as 60/72 and reject the expect)
await new Promise((r) => setTimeout(r, 200));
const received = lastBody ? (lastBody as Buffer).toString("utf8") : "";
sock.write(method(0, 10, 50, u16(200), shortstr("bye"), u16(0), u16(0))); // Connection.Close
await expect(10, 51).catch(() => undefined);
done = true;
sock.end();
resolve(received);
} catch (e) {
fail(e instanceof Error ? e : new Error(String(e)));
}
})();
});
});
}
function readMaybe(path: string | undefined): string {
if (!path) return "";
try {
return readFileSync(path, "utf8").replace(/\n$/, "");
} catch {
return "";
}
}
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// amqp-ping — a tiny demo consumer of the mesh `amqp` interface, run as a long-lived container by
// `mesh-tools run` (it never returns, so the container stays up). It exists to PROVE the grant end to
// end: the mesh gave it a scoped login and a vhost of that name on the lavinmq provider, and this
// connects with exactly those and round-trips a message.
//
// The connection facts arrive the way every consumer's do — the mesh writes them into an env-file the
// container reads (novox/hq ADR 0048): MESH_AMQP_HOST/PORT from the binding, MESH_AMQP_USER and
// MESH_AMQP_VHOST both from `${bound:amqp:as}` (the provider named the vhost after the login, so the
// consumer uses the login for both — the db-name lesson applied to AMQP), and MESH_AMQP_PASSWORD from
// `${secret:amqp}`.
//
// It retries: on first boot the provider may not have provisioned this consumer yet (the reconcile is
// asynchronous and cross-container), so a refused or unreachable connection is a "not yet", not a
// failure — it waits and tries again until the round-trip succeeds, then holds the connection idle
// and re-pings on a slow cadence so the container is a stable, running proof.
import { connFromEnv, roundTrip } from "./client.js";
async function sleep(ms: number): Promise<void> {
await new Promise((r) => setTimeout(r, ms));
}
async function pingOnce(): Promise<boolean> {
try {
const conn = connFromEnv();
const sent = `ping-${Date.now()}`;
const got = await roundTrip(conn, "amqp-ping", sent);
if (got === sent) {
console.log(`[amqp-ping] round-trip ok as ${conn.user} on vhost ${conn.vhost} (${conn.host}:${conn.port})`);
return true;
}
console.error(`[amqp-ping] round-trip mismatch: sent ${sent}, got ${got}`);
return false;
} catch (err) {
console.error(`[amqp-ping] not ready yet: ${err instanceof Error ? err.message : err}`);
return false;
}
}
// Wait for the first successful round-trip — the proof this consumer's grant works — then stay up.
let first = false;
for (let i = 0; !first; i++) {
first = await pingOnce();
if (!first) await sleep(3000);
}
console.log("[amqp-ping] connected and round-tripped; holding steady");
for (;;) {
await sleep(30000);
await pingOnce();
}
// changed by the one-node test at build 66e54af151df
// changed by the one-node test at build 4fb41636cffd
// changed by the one-node test at build a69f083bf6a6
-89
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{
"module": "amqp-ping",
"slug": "ping",
"version": "1",
"capabilities": [
"container-runtime"
],
"requires": [
"amqp"
],
"contributes": {},
"binds": {
"amqp": "/var/lib/amqp-ping/amqp.json"
},
"secrets": {
"amqp": "/var/lib/amqp-ping/amqp.secret"
},
"own-secrets": {
"broker": "/var/lib/mesh/amqp-ping/broker"
},
"resources": [
{
"id": "mesh-state",
"type": "directory",
"path": "/var/lib/mesh/amqp-ping",
"mode": "0700"
},
{
"id": "state",
"type": "directory",
"path": "/var/lib/amqp-ping",
"mode": "0700"
},
{
"id": "amqp-env",
"type": "file",
"path": "/var/lib/amqp-ping/amqp.env",
"mode": "0600",
"content": "MESH_AMQP_HOST=${bound:amqp:at}\nMESH_AMQP_PORT=${bound:amqp:port}\nMESH_AMQP_USER=${bound:amqp:as}\nMESH_AMQP_VHOST=${bound:amqp:as}\n"
},
{
"id": "net",
"type": "network",
"name": "amqp-ping"
},
{
"id": "runtime",
"type": "container",
"name": "amqp-ping",
"network": "amqp-ping",
"volumes": [
"/var/lib/mesh/amqp-ping/broker:/run/secrets/broker:ro",
"/var/lib/amqp-ping/amqp.secret:/run/secrets/amqp:ro"
],
"env": {
"MESH_BROKER_FILE": "/run/secrets/broker",
"MESH_AMQP_PASSWORD_FILE": "/run/secrets/amqp"
},
"env-file": [
"/var/lib/amqp-ping/amqp.env"
],
"restart-on": [
"amqp-env"
],
"artifact": "runtime"
}
],
"build": {
"on": [
{
"arg": "BUILD_BASE",
"module": "mesh-tools",
"artifact": "build"
},
{
"arg": "RUNTIME_BASE",
"module": "mesh-tools",
"artifact": "runtime"
}
],
"artifacts": [
{
"name": "runtime",
"kind": "image",
"from": "Dockerfile"
}
]
}
}
-14
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{
"name": "@novox/module-amqp-ping",
"version": "0.1.0",
"description": "amqp-ping — a demo consumer of the mesh amqp interface. Connects with its scoped grant and round-trips one message to prove the broker the mesh gave it (novox/hq ADR 0039).",
"type": "module",
"private": true,
"dependencies": {
"@novox/mesh-sdk": "^0.1.0"
},
"devDependencies": {
"@types/node": "^22.0.0",
"typescript": "^5.6.0"
}
}
-12
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@@ -1,12 +0,0 @@
{
"compilerOptions": {
"target": "ES2022",
"module": "NodeNext",
"moduleResolution": "NodeNext",
"strict": true,
"esModuleInterop": true,
"skipLibCheck": true,
"noEmit": true
},
"include": ["client.ts", "index.ts"]
}
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@@ -1,42 +0,0 @@
# lavinmq's runtime: the tool runtime, carrying this module's compiled bootstrap, provisioner,
# tools and event consumer.
#
# **Built from this module's own directory and nothing else.** The sdk is in the base image, so
# nothing is copied out of a neighbouring checkout — which is what lets the mesh build this from a
# repository and a path (novox/hq ADR 0069) rather than only on a workstation that happens to have
# the siblings.
#
# Two bases, named rather than pinned: the image this is COMPILED in, and the image it RUNS in.
# They are different images on purpose — the first carries a compiler and the second must not, or
# every running container would carry one it never invokes. The mesh answers both with the copies it
# holds, because a fingerprint written here would name one particular copy and no other mesh has it
# (novox/hq issue 044). Declared in module.json's `build.on`; deliberately no defaults, so a build
# nobody told stops here and says which module to build first.
ARG BUILD_BASE
ARG RUNTIME_BASE
FROM ${BUILD_BASE} AS build
# Compiled under /app/modules so `@novox/mesh-sdk` resolves upward into the base's own
# node_modules — the module is compiled against exactly the sdk it will run against.
WORKDIR /app/modules/lavinmq
COPY . .
# The compiler is invoked by its real path rather than through node_modules/.bin, whose entries are
# symlinks to a launcher that requires its library relatively — resolved away when the base image
# was assembled.
#
# Four entrypoints and a client, because this module is four things: a run-once bootstrap that
# writes the broker's configuration before it first starts, a provisioner that grants consumers
# their own vhost and user, a set of tools, and an event consumer.
RUN node /app/node_modules/typescript/bin/tsc \
client.ts index.ts bootstrap/index.ts provisioner/index.ts tools/index.ts \
--module NodeNext --moduleResolution NodeNext --target ES2022 --outDir dist
FROM ${RUNTIME_BASE}
COPY --from=build /app/modules/lavinmq/dist /app/modules/lavinmq/dist
# What the runtime loads from this module in serve mode: its event consumer, its tools, and its
# provisioner — all three in one process, so the provisioner's reconcile loop runs with the broker
# connected (novox/hq issues 060/061; the provisioner used to be run as a separate container `args`
# command, which meant it served no tools and, once, ran nowhere at all). The run-once bootstrap is
# NOT listed here — it is named in its own container's `args`, because it runs to completion before
# the broker starts rather than serving. One image, because they are one module and share a client.
ENV MESH_TOOL_MODULES=/app/modules/lavinmq/dist/index.js,/app/modules/lavinmq/dist/tools/index.js,/app/modules/lavinmq/dist/provisioner/index.js
-45
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// lavinmq's run-once bootstrap — lavinmq's own code (novox/hq ADR 0039), run once before the broker
// first starts (ADR 0052). lavinmq's default admin is set at first boot from a config file's
// `default_password_hash`, and that value is a HASH of the mesh-minted admin password, not the
// password itself — a form the mesh's plain-secret delivery cannot produce and no `${secret:...}`
// placeholder can compute. So this step computes it: it reads the admin password the mesh minted and
// the host unsealed, hashes it the way lavinmq expects (see client.rabbitHash), and writes the config
// file the broker container reads with `--config`. The host runs it to completion and only then
// starts the broker the manifest places after it — so the broker's first boot finds a config with an
// admin it can authenticate, and the provisioner (which reaches the management API as that admin)
// can do its work.
//
// It runs in the module's own runtime image, under the module's own account, as `mesh-tools run`
// imports it — no broker connection, because writing a config file is an offline operation and there
// is no broker to reach yet.
//
// lavinmq consults `default_user`/`default_password_hash` only on a first boot with an empty data
// dir; a later boot uses the persisted user database and ignores them. So this seeds the admin once,
// and a rotation of the admin secret does not re-key an already-initialised broker — the same
// first-boot-only shape the RabbitMQ-compatible default user has always had.
import { writeFileSync } from "node:fs";
import { readFileSync } from "node:fs";
import { rabbitHash } from "../client.js";
const adminUser = process.env.MESH_PROVISION_ADMIN_USER ?? process.env.MESH_LAVINMQ_ADMIN_USER ?? "mesh-admin";
const passwordFile = process.env.MESH_PROVISION_PASSWORD_FILE ?? process.env.MESH_LAVINMQ_ADMIN_PASSWORD_FILE ?? "/run/secrets/default";
const configOut = process.env.MESH_LAVINMQ_CONFIG_OUT ?? "/var/lib/lavinmq-module/lavinmq.ini";
const dataDir = process.env.MESH_LAVINMQ_DATA_DIR ?? "/var/lib/lavinmq";
const password = readFileSync(passwordFile, "utf8").replace(/\n$/, "");
if (!password) {
throw new Error(`[lavinmq:bootstrap] admin password file ${passwordFile} is empty — cannot seed the admin`);
}
// The broker reads only what it needs to authenticate its admin on first boot; bind/ports come from
// the container's entrypoint (`-b 0.0.0.0`), so this file names the admin and nothing else about the
// network.
const ini =
"[main]\n" +
`data_dir = ${dataDir}\n` +
`default_user = ${adminUser}\n` +
`default_password_hash = ${rabbitHash(password)}\n`;
writeFileSync(configOut, ini, { mode: 0o600 });
console.log(`[lavinmq:bootstrap] wrote ${configOut} with admin '${adminUser}' (password hashed for lavinmq)`);
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@@ -1,183 +0,0 @@
// lavinmq's admin client — lavinmq's own code, living in the module (novox/hq ADR 0039). Both this
// module's tools and its provisioner import it, and nothing outside lavinmq does.
//
// It drives lavinmq through its HTTP management API (the RabbitMQ-compatible surface lavinmq serves
// on 15672), not a hand-rolled AMQP admin stack: the module may take NO npm dependency beyond
// @novox/mesh-sdk, and the management API is exactly the admin surface — create/remove a vhost, a
// user, and its permissions — reached with `fetch` (global on node 22) and HTTP Basic auth. One
// boundary, `api()`, and every method is built on it. This is the module's one impure seam, the way
// postgres's is `psql` and redis's is a RESP socket.
//
// **The login and password are the mesh's, not the provisioner's (novox/hq ADR 0048).** The mesh
// derives the login and hands it to both ends so they agree, and mints the password and delivers a
// copy to each. lavinmq creates exactly that user with exactly that password on a vhost of the same
// name — a name or password the provisioner invented is one the consumer could never present.
import { createHash, randomBytes } from "node:crypto";
import { readFileSync } from "node:fs";
export interface LavinmqConn {
/** Base URL of the management API, e.g. http://lavinmq:15672 (no trailing /api). */
readonly base: string;
readonly adminUser: string;
readonly adminPassword: string;
}
export class LavinmqClient {
constructor(private readonly conn: LavinmqConn) {}
/**
* Build from the module's resolved environment. Reads MESH_LAVINMQ_* first (the documented
* names), falling back to the MESH_PROVISION_* keys the manifest already sets on the provisioner
* container so the module runs unchanged there. Throws if it cannot find a management endpoint and
* an admin password — the right failure, because without them nothing it does can work.
*/
static fromEnv(env: NodeJS.ProcessEnv = process.env): LavinmqClient {
const base = (env.MESH_LAVINMQ_MANAGEMENT ?? env.MESH_PROVISION_LAVINMQ ?? "").replace(/\/+$/, "");
const adminUser = env.MESH_LAVINMQ_ADMIN_USER ?? env.MESH_PROVISION_ADMIN_USER ?? "mesh-admin";
const adminPassword = env.MESH_LAVINMQ_ADMIN_PASSWORD ?? readSecretFile(env.MESH_PROVISION_PASSWORD_FILE);
if (!base || !adminPassword) {
throw new Error("lavinmq management endpoint or admin password is not set — lavinmq's own code cannot reach the server");
}
return new LavinmqClient({ base, adminUser, adminPassword });
}
/** One request against the management API. A non-2xx reply rejects, carrying the body for the log. */
async api(method: string, path: string, body?: unknown): Promise<unknown> {
const headers: Record<string, string> = {
Authorization: "Basic " + Buffer.from(`${this.conn.adminUser}:${this.conn.adminPassword}`).toString("base64"),
};
if (body !== undefined) headers["Content-Type"] = "application/json";
const resp = await fetch(`${this.conn.base}/api${path}`, {
method,
headers,
body: body !== undefined ? JSON.stringify(body) : undefined,
});
if (!resp.ok) {
throw new Error(`lavinmq management API ${method} ${path} -> ${resp.status}: ${await resp.text()}`);
}
const text = await resp.text();
return text ? JSON.parse(text) : null;
}
/** True once the management API answers — the server has finished starting. */
async ready(): Promise<boolean> {
try {
await this.api("GET", "/overview");
return true;
} catch {
return false;
}
}
/** Block until the management API answers, or throw once the budget is spent. */
async waitReady(retries = 30, delayMs = 1000): Promise<void> {
for (let i = 0; i < retries; i++) {
if (await this.ready()) return;
await new Promise((r) => setTimeout(r, delayMs));
}
throw new Error("lavinmq management API did not become ready");
}
/**
* Create (or reset to a known state) one consumer's broker: a vhost and a user both named for the
* consumer's login, with the login owning full permissions on exactly that vhost. Idempotent — a
* PUT of a vhost or user that exists is a no-op or a password reset, so a reconcile can call it
* again without harm. The consumer connects as `<login>` to vhost `<login>` and can reach nothing
* else (novox/hq ADR 0048).
*/
async createConsumer(login: string, password: string): Promise<void> {
const v = encodeURIComponent(login);
const u = encodeURIComponent(login);
await this.api("PUT", `/vhosts/${v}`);
await this.api("PUT", `/users/${u}`, { password, tags: "" });
await this.api("PUT", `/permissions/${v}/${u}`, { configure: ".*", write: ".*", read: ".*" });
}
/**
* Whether a consumer's user exists with exactly this password and full permissions on its own
* vhost. Read-only: the stored hash is salted SHA-256, the scheme `rabbitHash` writes, so the
* password is checked by hashing it with the stored salt rather than by logging in. `false` when
* the user or its permission is gone or the password differs; an unreachable API rejects
* (novox/hq issue 120).
*/
async holdsConsumer(login: string, password: string): Promise<boolean> {
const v = encodeURIComponent(login);
const u = encodeURIComponent(login);
const user = await this.getOrNull<{ password_hash?: string; hashing_algorithm?: string }>(`/users/${u}`);
if (!user?.password_hash) return false;
if (user.hashing_algorithm && !/sha256/i.test(user.hashing_algorithm)) {
throw new Error(`lavinmq user ${login} is hashed with ${user.hashing_algorithm}, which this check cannot verify`);
}
const stored = Buffer.from(user.password_hash, "base64");
if (stored.length < 5 || rabbitHash(password, stored.subarray(0, 4)) !== user.password_hash) return false;
const perm = await this.getOrNull<{ configure?: string; write?: string; read?: string }>(`/permissions/${v}/${u}`);
return perm?.configure === ".*" && perm?.write === ".*" && perm?.read === ".*";
}
/** A GET that answers null for a 404 and rejects on anything else that is not 2xx. */
private async getOrNull<T>(path: string): Promise<T | null> {
const resp = await fetch(`${this.conn.base}/api${path}`, {
headers: {
Authorization: "Basic " + Buffer.from(`${this.conn.adminUser}:${this.conn.adminPassword}`).toString("base64"),
},
});
if (resp.status === 404) return null;
if (!resp.ok) throw new Error(`lavinmq management API GET ${path} -> ${resp.status}: ${await resp.text()}`);
return (await resp.json()) as T;
}
/** Remove a consumer's vhost and user, idempotently. A DELETE of what is already gone is tolerated. */
async removeConsumer(login: string): Promise<void> {
const v = encodeURIComponent(login);
const u = encodeURIComponent(login);
try {
await this.api("DELETE", `/vhosts/${v}`);
} catch (err) {
console.error(`[lavinmq] delete vhost ${login} failed (continuing): ${err}`);
}
try {
await this.api("DELETE", `/users/${u}`);
} catch (err) {
console.error(`[lavinmq] delete user ${login} failed (continuing): ${err}`);
}
}
/** The vhosts, for the amqp_list_vhosts tool. */
async listVhosts(): Promise<{ name: string; messages: number }[]> {
const vhosts = (await this.api("GET", "/vhosts")) as { name: string; messages?: number }[];
return vhosts.map((v) => ({ name: v.name, messages: v.messages ?? 0 }));
}
/** The queues on one vhost (default the root vhost), for the amqp_list_queues tool. */
async listQueues(vhost = "/"): Promise<{ name: string; messages: number; consumers: number }[]> {
const queues = (await this.api("GET", `/queues/${encodeURIComponent(vhost)}`)) as
{ name: string; messages?: number; consumers?: number }[];
return queues.map((q) => ({ name: q.name, messages: q.messages ?? 0, consumers: q.consumers ?? 0 }));
}
}
/**
* The RabbitMQ-compatible SHA-256 password hash lavinmq's `default_password_hash` expects:
* base64( salt[4] || sha256( salt || utf8(password) ) ). The salt is any four bytes — random here,
* because a fixed salt buys nothing and a fresh one is free. Verified against `lavinmqctl
* hash_password`: a hash produced here is accepted by the server unchanged.
*/
export function rabbitHash(password: string, salt: Buffer = randomBytes(4)): string {
const digest = createHash("sha256").update(Buffer.concat([salt, Buffer.from(password, "utf8")])).digest();
return Buffer.concat([salt, digest]).toString("base64");
}
/** Generate a URL-safe password. */
export function generatePassword(): string {
return randomBytes(24).toString("base64url");
}
function readSecretFile(path: string | undefined): string | undefined {
if (!path) return undefined;
try {
return readFileSync(path, "utf8").trim();
} catch {
return undefined;
}
}
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@@ -1,25 +0,0 @@
// lavinmq's events entrypoint, loaded by the per-node tool host (the provisioner container runs
// ./provisioner separately). The broker lifecycle events are EMITTED from the provisioner, where the
// lifecycle actually happens (novox/hq ADR 0041/0042):
// module.lavinmq.amqp.provisioned — a consumer's vhost + user was created
// module.lavinmq.amqp.deprovisioned — that vhost + user was removed
// Here in the tool host we react to them, keeping a lightweight audit trail of who was granted a
// broker and who lost one — observability the provider itself is best placed to log.
import { on } from "@novox/mesh-sdk/events";
interface AmqpEvent {
consumer?: string;
user: string;
vhost?: string;
}
await on<AmqpEvent>("amqp.provisioned", async (e) => {
console.log(`[lavinmq] broker provisioned for ${e.body.consumer ?? "?"} (user ${e.body.user}, vhost ${e.body.vhost})`);
});
await on<AmqpEvent>("amqp.deprovisioned", async (e) => {
console.log(`[lavinmq] broker deprovisioned (user ${e.body.user})`);
});
console.log("[lavinmq] auditing broker lifecycle events");
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@@ -1,151 +0,0 @@
{
"module": "lavinmq",
"version": "1",
"provides": [
{
"name": "amqp",
"scope": "mesh"
}
],
"claims": [
{
"name": "mesh-broker",
"scope": "mesh"
}
],
"capabilities": [
"container-runtime"
],
"emits": [
"amqp.provisioned",
"amqp.deprovisioned"
],
"consumes": [
"lavinmq.amqp.provisioned",
"lavinmq.amqp.deprovisioned"
],
"serves": {
"amqp": {
"port": 5672
}
},
"receives": {
"amqp": "/var/lib/lavinmq-module/grants/mesh.json"
},
"grants": {
"amqp": "/var/lib/lavinmq-module/grants"
},
"own-secrets": {
"admin": "/var/lib/lavinmq-module/admin.secret",
"broker": "/var/lib/mesh/lavinmq/broker"
},
"listens": [
{
"port": 5671,
"protocol": "tcp",
"from": "mesh",
"why": "the mesh bus \u2014 amqps, every module's events and the control plane, reached over the overlay"
},
{
"port": 5672,
"protocol": "tcp",
"from": "mesh",
"why": "modules on any machine that were granted a queue"
}
],
"guards": [
15672
],
"resources": [
{
"id": "mesh-state",
"type": "directory",
"path": "/var/lib/mesh/lavinmq",
"mode": "0700"
},
{
"id": "state",
"type": "directory",
"path": "/var/lib/lavinmq-module",
"mode": "0700"
},
{
"id": "grants-dir",
"type": "directory",
"path": "/var/lib/lavinmq-module/grants",
"mode": "0700"
},
{
"id": "broker-data",
"type": "directory",
"path": "/var/lib/mesh-broker",
"mode": "0700"
},
{
"id": "server",
"type": "container",
"name": "mesh-broker",
"image": "cloudamqp/lavinmq@sha256:3eb54c12916d700a978c2ea86e6362cd4974b0e3189508718006d4e6d341246b",
"ports": [
"5671:5671",
"5672:5672",
"127.0.0.1:15672:15672"
],
"volumes": [
"/var/lib/mesh-broker:/var/lib/lavinmq",
"/var/lib/mesh-broker-tls:/tls:ro"
],
"args": [
"--amqps-port=5671",
"--cert=/tls/tls.crt",
"--key=/tls/tls.key"
]
},
{
"id": "runtime",
"type": "container",
"name": "mesh-lavinmq",
"artifact": "runtime",
"network": "host",
"volumes": [
"/var/lib/mesh/lavinmq/broker:/run/secrets/broker:ro",
"/var/lib/lavinmq-module/grants:/var/lib/lavinmq-module/grants:ro",
"/var/lib/lavinmq-module/admin.secret:/run/secrets/admin:ro"
],
"env": {
"MESH_BROKER_FILE": "/run/secrets/broker",
"MESH_RECEIVES": "/var/lib/lavinmq-module/grants/mesh.json",
"MESH_PROVISION_LAVINMQ": "http://127.0.0.1:15672",
"MESH_PROVISION_ADMIN_USER": "guest",
"MESH_PROVISION_PASSWORD_FILE": "/run/secrets/admin"
}
}
],
"build": {
"on": [
{
"arg": "BUILD_BASE",
"module": "mesh-tools",
"artifact": "build"
},
{
"arg": "RUNTIME_BASE",
"module": "mesh-tools",
"artifact": "runtime"
}
],
"artifacts": [
{
"name": "runtime",
"kind": "image",
"from": "Dockerfile"
}
]
},
"accesses": [
{
"path": "/var/lib/mesh-broker-tls",
"mode": "read"
}
]
}
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@@ -1,14 +0,0 @@
{
"name": "@novox/module-lavinmq",
"version": "0.1.0",
"description": "lavinmq — provides the mesh amqp interface (a per-consumer AMQP message broker). Its management client, provisioner, run-once bootstrap, tools and events live here (novox/hq ADR 0039).",
"type": "module",
"private": true,
"dependencies": {
"@novox/mesh-sdk": "^0.1.1"
},
"devDependencies": {
"@types/node": "^22.0.0",
"typescript": "^5.6.0"
}
}
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@@ -1,56 +0,0 @@
// lavinmq's provisioner — the adapter that makes lavinmq a provider of the mesh `amqp` interface.
// The reconcile loop, the contributions file, and reading the mesh's minted password are the sdk
// harness's; this writes only the per-service half: how lavinmq creates and removes a consumer's own
// broker (novox/hq ADR 0039/0040/0048).
//
// The `amqp` interface: a consumer connects as `as` with the password the mesh minted, to a vhost
// named for that same login — its own message broker, isolated from every other consumer's by the
// vhost boundary. It is a broker of its own, not a shared account on the mesh's control-plane broker.
//
// **The login and password are the mesh's, not the provisioner's (novox/hq ADR 0048).** The mesh
// derives the login and hands it to both ends so they agree, and mints the password and delivers a
// copy to each. lavinmq creates exactly that user with exactly that password — a name or password the
// provisioner invented is one the consumer could never present.
//
// Vhost-per-login is the isolation model, the exact analog of postgres's database-per-login: the
// consumer owns one vhost, named for its login, and a user with full rights on that vhost and no
// rights anywhere else. lavinmq enforces it — a user with no permission on `/` is refused the moment
// it opens that vhost (`NOT_ALLOWED`), so a login is a broker the consumer alone can reach.
import { runProvisioner, type Provision } from "@novox/mesh-sdk/provisioner";
import { emit } from "@novox/mesh-sdk/events";
import { LavinmqClient } from "../client.js";
const lavinmq = LavinmqClient.fromEnv();
/** Emit a lifecycle event without letting a broker hiccup fail the provisioning itself. */
async function announce(type: string, body: Record<string, string>): Promise<void> {
try {
await emit(type, body);
} catch (err) {
console.error(`[provisioner:amqp] emit ${type} failed: ${err}`);
}
}
runProvisioner("amqp", {
async create(p: Provision): Promise<void> {
// The vhost and the user share the consumer's login, so one cannot reach another's broker.
await lavinmq.waitReady();
await lavinmq.createConsumer(p.as, p.password);
await announce("amqp.provisioned", {
consumer: p.consumer ?? "",
user: p.as,
vhost: p.as,
});
},
async remove(p: { as: string }): Promise<void> {
await lavinmq.removeConsumer(p.as);
await announce("amqp.deprovisioned", { user: p.as, vhost: p.as });
},
// Asked every minute by the harness: whether the backend still holds this consumer exactly as
// the mesh gave it, so a login lost behind the provisioner's back is made again (novox/hq issue 120).
async holds(p: Provision): Promise<boolean> {
return lavinmq.holdsConsumer(p.as, p.password);
},
});
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@@ -1,32 +0,0 @@
// lavinmq's tools — lavinmq's own code (novox/hq ADR 0039), importing lavinmq's own management
// client. They return structured data; the mesh serves them through the sdk's tool harness.
import { registerModuleTools, type ToolDefinition } from "@novox/mesh-sdk/tools";
import { LavinmqClient } from "../client.js";
export function getLavinmqTools(lavinmq: LavinmqClient): ToolDefinition[] {
return [
{
name: "amqp_list_vhosts",
description: "List the lavinmq virtual hosts — one per consumer that was granted a broker.",
input: {},
run: async () => ({ vhosts: await lavinmq.listVhosts() }),
},
{
name: "amqp_list_queues",
description: "List the queues on a vhost with message and consumer counts. Omit vhost for the root '/'.",
input: { vhost: { type: "string", description: "the vhost to list, e.g. a consumer's login; defaults to '/'" } },
run: async (args) => ({ queues: await lavinmq.listQueues(args.vhost ? String(args.vhost) : undefined) }),
},
];
}
// The tools exist only when the server can be reached from the environment; without it, lavinmq
// contributes none rather than failing the whole tool runtime.
registerModuleTools("lavinmq", (env) => {
try {
return getLavinmqTools(LavinmqClient.fromEnv(env));
} catch {
return [];
}
});
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@@ -1,12 +0,0 @@
{
"compilerOptions": {
"target": "ES2022",
"module": "NodeNext",
"moduleResolution": "NodeNext",
"strict": true,
"esModuleInterop": true,
"skipLibCheck": true,
"noEmit": true
},
"include": ["client.ts", "index.ts", "provisioner/index.ts", "tools/index.ts", "bootstrap/index.ts"]
}
+5 -2
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@@ -9,8 +9,11 @@
#
# Unlike every other module's Dockerfile, this builds no TypeScript and uses no mesh base image:
# the module's code is the server, which upstream already built. There is no BUILD_BASE here on
# purpose — nothing is compiled.
FROM nats@sha256:b83efabe3e7def1e0a4a31ec6e078999bb17c80363f881df35edc70fcb6bb927
# purpose — nothing is compiled. The upstream image is declared in the manifest under build.on and
# arrives as NATS_BASE, like every other base the mesh copies into its own store before a build
# (novox/hq ADR 0097); the digest above is the index one for the reason given.
ARG NATS_BASE
FROM ${NATS_BASE}
COPY entrypoint.sh /usr/local/bin/mesh-nats-entrypoint
RUN chmod 0755 /usr/local/bin/mesh-nats-entrypoint
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@@ -73,6 +73,12 @@
}
],
"build": {
"on": [
{
"arg": "NATS_BASE",
"image": "nats@sha256:b83efabe3e7def1e0a4a31ec6e078999bb17c80363f881df35edc70fcb6bb927"
}
],
"artifacts": [
{
"name": "server",