octoturge
d0a17ee50e
Removed adapters/ (rumqttc MQTT, suppaftp FTPS, reqwest HTTP), plate_changer/ (tokio-serial), discovery/, and cache.rs (rusqlite) — src/printer/ already covers 'talk to a printer' as simple stubs, so keeping a second, more complex version alongside it was redundant. main.rs goes from 6 concurrent tasks to 2 (uplink + go2rtc). uplink/ drops channels, jitter, and Send-bound futures. Verified with cargo build + cargo run --example printer_polymorphism.
53 lines
2.1 KiB
Markdown
53 lines
2.1 KiB
Markdown
# continuum-proxy
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Edge gateway daemon for the Continuum print farm platform. Runs on a Linux
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SBC on-site, talks to printers over the LAN, and keeps a connection to the
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cloud control plane (`continuum-backend`).
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## This is a learning-stage boilerplate
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This repo is deliberately minimal right now — real printer protocol clients
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(Bambu MQTT+FTPS, PrusaLink REST, Klipper/Moonraker WebSocket) are **not**
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implemented yet. Each vendor is a stub that just prints what it would do
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(`src/printer/bambu.rs`, `prusa.rs`, `klipper.rs`). The idea is to learn
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Rust's polymorphism pattern (trait + enum, since Rust has no class
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inheritance) on something simple before adding real networking on top.
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## Getting started
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```bash
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cp .env.example .env
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cargo run # the daemon: cloud uplink + go2rtc watchdog
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cargo run --example printer_polymorphism # standalone demo, no network/env needed
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```
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## Structure
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```
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src/
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main.rs Runs the uplink and the go2rtc watchdog side by side
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config.rs Loads settings from environment variables
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uplink/ WebSocket client to continuum-backend: connect, heartbeat, reconnect on drop
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printer/ Printer trait + PrinterBase + PrinterHandle enum + one stub per vendor
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go2rtc.rs Restarts the go2rtc camera-restreaming process if it dies
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examples/
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printer_polymorphism.rs Runs all three printer stubs through one `connect()` call site
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```
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`src/printer/` is where the "inheritance" question lives — see that
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module's doc comment for the trait+enum pattern this project uses instead
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of class inheritance, and run the example above to see it work.
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## What's not here yet (on purpose)
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- Real MQTT/FTPS/HTTP/WebSocket printer clients — `src/printer/*.rs` has a
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`println!` where each of these will go.
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- Local SQLite buffering for telemetry across connectivity gaps.
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- LAN printer discovery (SSDP/mDNS).
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- The mechanical plate-changer interface (serial/GPIO).
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Add these back in one at a time as you get comfortable with the Rust
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underneath them — each is its own small lesson (async I/O, a new crate's
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API, error handling for a real protocol) rather than something to absorb
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all at once.
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