docs(homecore-server): comprehensive README — integrated HOMECORE orchestration binary
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# homecore-server
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Integrated HOMECORE server binary that wires state machine, API, recorder, plugins, automations, intent assistant, and HomeKit bridge into one process.
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[](.)
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[](../../docs/adr/ADR-126-homecore-home-assistant-port.md)
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The production-ready HOMECORE binary — boots all 7 subsystems (core, API, recorder, plugins, automation, assist, HAP bridge) in a single process listening on `:8123`.
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## What this crate does
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`homecore-server` is the integration point for the entire HOMECORE ecosystem. It orchestrates:
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1. **HomeCore runtime** — state machine, event bus, service registry
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2. **REST + WebSocket API** — Axum server on `:8123` (HA-compatible)
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3. **SQLite Recorder** — persists all state changes to disk
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4. **Plugin Registry** — loads and manages integrations (InProcessRuntime by default)
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5. **Automation Engine** — evaluates triggers, conditions, and actions
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6. **Assist Pipeline** — intent recognition and execution
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7. **HAP Bridge** — exposes accessories to HomeKit
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All subsystems share the same `HomeCore` instance, so state changes flow through the event bus and trigger automations, record history, and notify WebSocket subscribers in lockstep.
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## Features
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- **Single unified process** — no external microservices; run with `cargo run -p homecore-server`
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- **HA-compatible REST API** — drop-in replacement for Home Assistant's `/api/` on `:8123`
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- **SQLite state history** — persistent recording of all state changes
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- **Automation engine** — YAML-driven trigger→condition→action execution
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- **Intent assistant** — regex-based (P1) intent recognition + service calling
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- **HomeKit bridge** — exposes HOMECORE entities as HomeKit accessories
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- **Plugin system** — load first-party Rust plugins; Wasmtime WASM plugins (P2, `--features wasmtime`)
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- **Configurable via CLI + env vars** — no YAML required; sensible defaults
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- **Structured logging** — tracing output with `RUST_LOG` filtering
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- **Feature-gated subsystems** — disable recorder (`--no-recorder`), enable ruvector/wasmtime as needed
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## Subsystems
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| Subsystem | Crate | Role | Notes |
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|-----------|-------|------|-------|
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| State Machine | `homecore` | Core domain model | All other subsystems depend on this |
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| REST API | `homecore-api` | HTTP boundary | Listens on `:8123`; Axum framework |
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| Recorder | `homecore-recorder` | Persistence | SQLite; optional `--no-recorder` |
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| Plugins | `homecore-plugins` | Extension system | InProcessRuntime default; Wasmtime w/ feature |
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| Automation | `homecore-automation` | Trigger execution | Subscribes to event bus; YAML-driven |
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| Assist | `homecore-assist` | Intent pipeline | Regex recognizer (P1); semantic (P2) |
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| HAP Bridge | `homecore-hap` | HomeKit export | Accessories + characteristics; mDNS (P2) |
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## Usage
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**Basic startup** (in-memory recorder):
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```bash
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cargo build -p homecore-server
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./target/debug/homecore-server
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# Listens on http://localhost:8123
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```
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**With persistent SQLite**:
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```bash
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./target/debug/homecore-server \
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--bind 0.0.0.0:8123 \
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--db sqlite:~/.homecore/home.db \
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--location-name "My Home"
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```
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**Full feature build** (ruvector semantic search + Wasmtime plugins):
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```bash
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cargo build -p homecore-server --features ruvector,wasmtime --release
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```
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**Via Docker** (Dockerfile planned P2):
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```bash
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docker run -p 8123:8123 \
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-e HOMECORE_DB=sqlite:///data/home.db \
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-v ~/.homecore:/data \
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homecore-server:latest
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```
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**Test the API**:
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```bash
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# List all entities
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curl http://localhost:8123/api/states
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# Set a light to "on"
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curl -X POST \
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-H "Content-Type: application/json" \
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-d '{"state":"on","attributes":{"brightness":200}}' \
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http://localhost:8123/api/states/light.kitchen
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# WebSocket subscription (real-time state changes)
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wscat -c ws://localhost:8123/api/websocket
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```
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**Configuration via env**:
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```bash
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export HOMECORE_BIND="0.0.0.0:8123"
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export HOMECORE_DB="sqlite:~/.homecore/home.db"
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export HOMECORE_LOCATION="Living Room"
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export RUST_LOG="homecore=debug,homecore_api=info"
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./target/debug/homecore-server
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```
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## CLI Options
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| Flag | Env Var | Default | Description |
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|------|---------|---------|-------------|
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| `--bind` | `HOMECORE_BIND` | `0.0.0.0:8123` | REST API listen address |
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| `--db` | `HOMECORE_DB` | `sqlite::memory:` | SQLite path (`:memory:` for ephemeral) |
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| `--location-name` | `HOMECORE_LOCATION` | `Home` | Friendly name returned by `/api/config` |
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| `--no-recorder` | — | off | Disable SQLite recorder (low-resource deployments) |
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## Comparison to Home Assistant
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| Aspect | Home Assistant | homecore-server |
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|--------|----------------|-----------------|
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| Architecture | Python asyncio monolith | Rust async Tokio + component traits |
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| API protocol | `/api/` REST (HA wire format) | Identical HA wire format |
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| Persistence | SQLite + YAML files | SQLite (P1); Redis (P2) |
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| Plugins | Python integrations in `homeassistant/components/` | Rust (P1) + WASM (P2) |
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| Automation execution | Python asyncio event loop | Tokio async tasks + trait-based |
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| HomeKit bridge | Via `homekit` integration | Built-in `homecore-hap` subsystem |
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| CLI | `hass` command with config YAML | `homecore-server` with feature flags |
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| Scalability | Single instance (HA Cloud for scale) | Can be load-balanced (future) |
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| Binary size | ~200 MB (Python + deps) | ~50 MB (Rust, release build; 200 MB w/ wasmtime) |
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## Performance Targets (unreleased; TBD)
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- **Startup time** — < 2s to listen on `:8123`
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- **REST endpoint latency** — p50 < 1 ms; p99 < 10 ms
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- **Event bus throughput** — 10,000+ events/sec
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- **Automation evaluation** — < 100 μs per trigger
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- **Concurrent WebSocket connections** — 10,000+
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- **Memory footprint** — ~100 MB (idle); ~500 MB with 1,000 recorded states
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## Development
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**Run tests**:
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```bash
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cargo test -p homecore-server
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```
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**Enable debug logging**:
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```bash
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RUST_LOG=debug cargo run -p homecore-server -- --bind 127.0.0.1:8123
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```
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**Build documentation**:
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```bash
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cargo doc -p homecore-server --open
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```
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## Relation to other HOMECORE crates
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```
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homecore-server (orchestration binary)
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├── homecore (state machine)
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├── homecore-api (REST + WS)
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├── homecore-recorder (SQLite persistence)
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├── homecore-plugins (extension system)
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├── homecore-automation (trigger execution)
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├── homecore-assist (intent pipeline)
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└── homecore-hap (HomeKit bridge)
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```
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## References
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- [ADR-126: HOMECORE Home Assistant Port (master)](../../docs/adr/ADR-126-homecore-home-assistant-port.md)
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- [README — wifi-densepose](../../../README.md)
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- [Dockerfile (planned P2)](Dockerfile.planned)
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- [Docker Hub image (planned P2)](https://hub.docker.com/r/ruvnet/homecore-server)
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