# OpenSpec Change: enterprise-network-registry

- **Change ID**: enterprise-network-registry
- **Package**: `@suaveplan/network-registry`
- **Category**: universal/network
- **Target path**: `universal/network/network-registry`
- **Status**: SUPERSEDED-BY-GENESIS-WAVE
- **Date**: 2026-04-24
- **Reference spec**: `/mnt/s/web/suaveplan/enterprise/network-registry.md`

---

## Summary

Deliver `@suaveplan/network-registry` on the genesis branch from scratch at enterprise quality. The package provides a network service and peer registry: register/deregister services with metadata and capabilities, health-status tracking, TTL-based expiry, lookup by capability/tag/region, and change-notification subscriptions. Genesis adds structured errors via `@suaveplan/error`, Zod schemas for all registry types, OTel instrumentation on register/lookup operations, `AbortSignal` on async lookup, injectable `Clock` for TTL expiry, event-bus emission for registration changes, and property-based tests for lookup correctness.

---

## Current-state audit (genesis)

The package does not exist on genesis yet — this is a fresh build.

---

## Available workspace deps on genesis

| Package | Role |
|---|---|
| `@suaveplan/error` (`workspace:^`) | Base class for `NetworkRegistryError`; stable error codes |
| `@suaveplan/types` (`workspace:^`) | `LoggerLike`, `Clock`, `EventBusLike` |
| `@suaveplan/events` (`workspace:^`) | Event bus for registration changes |
| `@suaveplan/logger` (`workspace:^`) | Structured logging |
| `zod` (`catalog:forms`) | Zod schemas |
| `@opentelemetry/api` (`catalog:observability`) | Spans + counters on register/lookup |
| `tslib` (`catalog:build`) | Runtime helpers |

Dev deps: `vitest`, `@vitest/coverage-istanbul`, `fast-check` (all `catalog:testing`).

---

## Public API surface

### Core

```ts
function createNetworkRegistry(options?: NetworkRegistryOptions): NetworkRegistry

interface NetworkRegistry {
  register(entry: RegistryEntry): RegistrationHandle
  deregister(entryId: string): boolean
  lookup(query: RegistryQuery): ReadonlyArray<RegistryEntry>
  get(entryId: string): RegistryEntry | null
  list(filter?: RegistryFilter): ReadonlyArray<RegistryEntry>
  updateHealth(entryId: string, status: HealthStatus): boolean
  subscribe(query: RegistryQuery, handler: RegistryChangeHandler): () => void
  purgeExpired(): number
}
```

### Entry types

```ts
interface RegistryEntry {
  id: string
  name: string
  type: 'peer' | 'service' | 'relay' | 'bootstrap'
  address?: string
  port?: number
  region?: string
  capabilities: string[]
  tags?: Record<string, string>
  metadata?: Record<string, unknown>
  ttlMs?: number
  registeredAt?: number
  expiresAt?: number
  health?: HealthStatus
}

interface HealthStatus {
  healthy: boolean
  lastCheckedAt: number
  latencyMs?: number
  load?: number  // 0–1
}

interface RegistrationHandle {
  readonly entryId: string
  renew(ttlMs?: number): void
  deregister(): void
}
```

### Query types

```ts
interface RegistryQuery {
  type?: RegistryEntry['type'] | Array<RegistryEntry['type']>
  capabilities?: string[]          // entry must have ALL listed capabilities
  anyCapabilities?: string[]       // entry must have AT LEAST ONE
  tags?: Record<string, string>    // all tag key/value pairs must match
  region?: string
  healthyOnly?: boolean
  limit?: number
}

interface RegistryFilter {
  type?: RegistryEntry['type'] | Array<RegistryEntry['type']>
  healthyOnly?: boolean
  region?: string
}

type RegistryChangeHandler = (change: RegistryChange) => void

interface RegistryChange {
  type: 'registered' | 'deregistered' | 'health-changed' | 'expired'
  entry: RegistryEntry
  previous?: RegistryEntry
}
```

### Options

```ts
interface NetworkRegistryOptions {
  ttlDefaultMs?: number
  maxEntries?: number
  gcIntervalMs?: number
  logger?: LoggerLike
  clock?: Clock
  eventBus?: EventBusLike
}
```

### Error codes

```ts
type NetworkRegistryErrorCode =
  | 'REGISTRY_ENTRY_NOT_FOUND'
  | 'REGISTRY_DUPLICATE_ID'
  | 'REGISTRY_CAPACITY_EXCEEDED'
  | 'REGISTRY_INVALID_ENTRY'
  | 'REGISTRY_EXPIRED'

function registerNetworkRegistryErrorCodes(): void
```

---

## Genesis additions

1. **Structured `NetworkRegistryError`** with stable `REGISTRY.*` codes
2. **Zod schemas** for `RegistryEntry`, `RegistryQuery`, `NetworkRegistryOptions`
3. **TTL-based expiry** with periodic GC via injectable `Clock`; `purgeExpired()` callable manually
4. **Subscription-based change notifications** with query-scoped filtering
5. **Capability AND/OR query operators** — `capabilities` (AND), `anyCapabilities` (OR)
6. **Health status tracking** with `updateHealth()` API
7. **OTel instrumentation** — counter `registry.register_total`, `registry.deregister_total`, `registry.lookup_total`, histogram `registry.lookup_results`
8. **Property-based tests** — lookup(query) results are always a subset of `list()`; TTL expiry correctness

---

## File layout

```text
universal/network/network-registry/
  package.json
  tsconfig.json
  vitest.config.ts
  src/
    index.ts
    error-codes.ts
    constants/
      index.ts
    types/
      common.ts
      common.md
    core/
      registry/
        registry.ts
        registry.md
        registry.types.ts
        registry.test.ts
        index.ts
      query-engine/
        query-engine.ts
        query-engine.md
        query-engine.test.ts
        index.ts
      ttl-manager/
        ttl-manager.ts
        ttl-manager.md
        ttl-manager.test.ts
        index.ts
  tests/
    integration.test.ts
    property.test.ts
```

---

## Impact

**Workspace dep prerequisites**: `@suaveplan/error`, `@suaveplan/types`, `@suaveplan/events`, `@suaveplan/logger` must be published.