State deduplication via PartialEq + send_if_modified:
Derive PartialEq on the full RigState / RigSnapshot type tree
(Freq, Band, RigInfo, RigCapabilities, RigStatus, RigTxStatus,
RigRxStatus, RigControl, RigVfo, RigVfoEntry, RigFilterState,
RdsData, SpectrumData, RigState, RigSnapshot). Use
state_tx.send_if_modified() in refresh_remote_snapshot() so
WatchStream only wakes SSE /events subscribers when state
actually changed; with a stable rig this eliminates ~1.3
spurious JSON serialisations per second per connected client.
Cache-remote-rigs skip on unchanged list:
cache_remote_rigs() was rebuilding the Vec and cloning every
field on every 750 ms poll. Add a structural check (rig_id,
display_name, initialized, audio_port) and return early when
nothing has changed — the common steady-state case.
RDS JSON pre-serialised at ingestion:
SharedSpectrum.replace() now serialises the optional RDS object
once and stores it alongside the Arc<SpectrumData> frame.
Each /spectrum SSE client's 40 ms tick reads the cached string
instead of calling serde_json::to_string() per-client per-tick.
Add serde_json to trx-frontend Cargo.toml to support this.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: Stan Grams <sjg@haxx.space>
Create explicit context types for frontend registration and runtime:
FrontendRegistrationContext:
- register_frontend(name, spawner) - register a frontend
- is_frontend_registered(name) - check if registered
- registered_frontends() -> Vec<String> - list all frontends
- spawn_frontend(name, ...) -> DynResult - spawn a frontend
FrontendRuntimeContext (NEW):
- audio_rx: broadcast channel for audio RX
- audio_tx: mpsc channel for audio TX
- audio_info: watch channel for audio stream metadata
- decode_rx: broadcast channel for decoded messages
- aprs_history: Arc<Mutex<VecDeque>> for APRS decode history
- cw_history: Arc<Mutex<VecDeque>> for CW decode history
- ft8_history: Arc<Mutex<VecDeque>> for FT8 decode history
- auth_tokens: HashSet for authentication
Replaces global mutable state with explicit context that can be
threaded through bootstrap. Maintains global API for compatibility.
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
Signed-off-by: Stanislaw Grams <stanislawgrams@gmail.com>
Move the frontend and backend crate trees to live physically under their
respective binary crate directories, grouping related code together
without merging crate boundaries. Also flatten sub-crate nesting by
moving them out of src/ subdirectories into direct children.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
sjg
