[docs](trx-rs): reanalyze improvement areas, clear resolved items
Audit codebase against previous improvement list — all P0/P1/P2 items from the prior review are now resolved or dropped. Restructured document with resolved items in a collapsed section and identified new areas: decoder task duplication, missing tests, decode log error handling, api.rs size, and others. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Signed-off-by: Stan Grams <sjg@haxx.space>
This commit is contained in:
@@ -128,26 +128,24 @@ Improvement plan: `docs/Improvement-Areas.md`
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### Areas for Improvement
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### Areas for Improvement
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**P0 — Critical:**
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All previous P0 items resolved or dropped. See `docs/Improvement-Areas.md` for
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- **Plugin signing**: No SHA-256 checksum verification, no per-plugin scoping, no Windows validation.
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resolved item details.
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**P1 — High:**
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**P1 — High:**
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- **Session store unwrap()**: 7 `.write().unwrap()` in `auth.rs` — mutex poisoning crashes server.
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- **Decoder task duplication**: 9 decoder tasks in `audio.rs` (3,826 LOC) share ~1,000 lines of near-identical boilerplate. Extract a generic `DecoderTask<D>`.
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- **No TCP listener rate limiting**: Raw protocol listener accepts unlimited connections per IP.
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- **Missing tests**: `audio.rs` (3,826 LOC), `api.rs` (2,831 LOC), `main.rs` (679 LOC) have 0 tests.
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- **RigState 33-field flat struct**: Decoder bools/reset seqs should be sub-structs. Cloned on every broadcast.
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- **No multi-rig integration tests**: State isolation and command routing between rigs untested.
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- **No `spawn_blocking` timeout**: Satellite pass computation in `listener.rs` can hang indefinitely.
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**P2 — Medium:**
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**P2 — Medium:**
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- **Command handler boilerplate**: 11 `RigCommandHandler` impls across 500+ lines. Macro opportunity.
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- **Decode log silent failures**: `let _ = flush()` discards errors; rotation failure has no fallback writer.
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- **No command execution timeouts** at `CommandExecutor` level. Backend stalls propagate up.
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- **`api.rs` size**: 2,831 LOC with ~25 endpoint handlers and no logical separation.
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- **No protocol versioning**: Unknown commands cause parse errors with no graceful degradation.
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- **Background decode state complexity**: 8+ nested conditionals in `run()` inner loop (~95 lines).
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- **Unsafe string in spectrum encoding**: `from_utf8_unchecked` in `api.rs:63`.
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- **Actix-web pinned**: `=4.4.1` prevents patch-level security updates.
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- **6 `#[allow(dead_code)]`** annotations to review/clean up.
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- **VDES magic numbers**: Plausibility thresholds (`-35`, `15`) are undocumented inline constants.
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**P3 — Low:**
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**P3 — Low:**
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- **Missing tests**: `audio.rs` (3,812 LOC), `api.rs` (2,711 LOC), `main.rs` (1,203 LOC) have 0 tests.
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- **FT-817 VFO inference fragile**: Defaults to VFO A when both share the same frequency.
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- **FT-817 VFO inference fragile**: Fails when VFO A and B share the same frequency.
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- **String cloning in remote client**: ~105 `.clone()` calls, some in hot poll loops.
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- ~~**VDES decoder incomplete**~~: Turbo FEC, CRC-16, and M.2092-1 link-layer parsing now implemented.
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- **Missing decoder doc comments**: `AisDecoder`, `VdesDecoder`, `RdsDecoder` lack public API docs.
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- **Plugin system lacks versioning**: No API version or reload semantics.
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- **Turbo decoder precondition**: `turbo_decode_soft()` lacks debug assertions on interleaver length.
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- **Configurator detection stubbed**: `detect.rs` TODO for `serialport::available_ports()`.
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- **No decoder tracing spans**: No `info_span!` for measuring per-decoder latency.
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- **Inconsistent naming**: `freq_hz`/`frequency`/`center_hz`; `rig_id`/`id`; `model`/`rig_model`.
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+197
-91
@@ -8,152 +8,258 @@ a suggested fix.
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---
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---
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## Critical (P0)
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## Resolved Items
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### ~~Plugin signing and cross-platform validation~~ — DROPPED
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<details>
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<summary>Click to expand resolved items from previous audits</summary>
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### Plugin signing and cross-platform validation — DROPPED
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Plugin system has been removed from the codebase. No longer applicable.
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Plugin system has been removed from the codebase. No longer applicable.
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### Session store mutex poisoning (auth.rs) — RESOLVED
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**Location:** `src/trx-client/trx-frontend/trx-frontend-http/src/auth.rs`
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All 6 `.write().unwrap()` / `.lock().unwrap()` calls replaced with
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`.unwrap_or_else(|e| { warn!(...); e.into_inner() })` pattern. Lock poisoning now
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logs a warning and recovers the inner data instead of crashing.
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### No rate limiting on TCP listener — RESOLVED
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**Location:** `src/trx-server/src/listener.rs`
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Added `ConnectionTracker` with per-IP connection limiting (default: 10 concurrent
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connections per IP). Connections exceeding the limit are rejected with a log warning.
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Slots are released when clients disconnect.
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### RigState is a 33-field flat struct — RESOLVED
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**Location:** `src/trx-core/src/rig/state.rs`
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Decoder fields grouped into `DecoderConfig` (8 bools) and `DecoderResetSeqs`
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(8 u64 counters). Both use `#[serde(flatten)]` for backward-compatible JSON wire
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format. Updated across all consumers.
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### No `spawn_blocking` timeout — RESOLVED
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**Location:** `src/trx-server/src/listener.rs`
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Satellite pass computation wrapped in `tokio::time::timeout(30s, ...)` with
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graceful fallback to empty results on timeout or panic.
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### Command handler boilerplate — RESOLVED
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**Location:** `src/trx-core/src/rig/controller/handlers.rs`
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Created `rig_command!` declarative macro. 7 unit commands use the macro; 4 commands
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with custom fields/validation remain as explicit impls.
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### No command execution timeouts at CommandExecutor level — RESOLVED
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**Location:** `src/trx-server/src/rig_task.rs`
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`tokio::time::timeout(command_exec_timeout, process_command(...))` wraps all
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command execution. Default timeout: 10s, configurable via `RigTaskConfig`.
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### No forward compatibility in protocol — RESOLVED
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**Location:** `src/trx-protocol/src/types.rs`, `src/trx-protocol/src/codec.rs`
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Added optional `protocol_version: Option<u32>` to `ClientEnvelope` and
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`ClientResponse`. `parse_envelope()` distinguishes malformed JSON from
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unrecognised `cmd` values.
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### `unsafe` string construction in spectrum encoding — RESOLVED
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**Location:** `src/trx-client/trx-frontend/trx-frontend-http/src/api.rs`
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Replaced `unsafe { String::from_utf8_unchecked(out) }` with safe
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`String::from_utf8(out).expect(...)`.
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### `#[allow(dead_code)]` cleanup — RESOLVED
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Reduced from 6 to 4 annotations, all in trx-backend-soapysdr where fields serve
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as lifetime anchors (`device`, `iq_tx`) or document reserved capacity
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(`fixed_slot_count`, `process_pair`).
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### VDES decoder incomplete FEC — RESOLVED
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Turbo FEC decoder, CRC-16-CCITT validation, and M.2092-1 link-layer frame parsing
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implemented.
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### Plugin system lacks versioning — DROPPED
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Plugin system removed from the codebase.
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### Configurator serial detection stubbed — RESOLVED
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Implemented using `tokio_serial::available_ports()` with USB, Bluetooth, PCI, and
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Unknown port type descriptions.
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### Inconsistent frequency/rig naming — DOCUMENTED AS INTENTIONAL
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Field names reflect distinct semantic contexts: `freq_hz` (dial), `center_hz`
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(SDR capture center), `cw_center_hz` (CW tone); `rig_id` (config key), `id`
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(runtime UUID); `model` (hardware string), `rig_model` (config parameter).
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</details>
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---
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---
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## High Priority (P1)
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## High Priority (P1)
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### ~~Session store mutex poisoning (auth.rs)~~ — RESOLVED
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### Decoder task duplication in audio.rs
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**Location:** `src/trx-client/trx-frontend/trx-frontend-http/src/auth.rs`
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**Location:** `src/trx-server/src/audio.rs` (3,826 LOC)
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**Resolution:** All 6 `.write().unwrap()` / `.lock().unwrap()` calls replaced with
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Nine decoder tasks (APRS, AIS, VDES, CW, FT2, FT4, FT8, WSPR, LRPT) each
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`.unwrap_or_else(|e| { warn!(...); e.into_inner() })` pattern. Lock poisoning now
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implement the same pattern: subscribe to PCM broadcast, watch for state changes
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logs a warning and recovers the inner data instead of crashing.
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(mode/frequency/reset), call `block_in_place()` for synchronous decoding, record
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to history, and forward to `decode_tx`. This results in ~1,000 lines of
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near-identical boilerplate with 14+ `block_in_place()` calls and 12+
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`.resubscribe()` calls.
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### ~~No rate limiting on TCP listener~~ — RESOLVED
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**Risk:** A bug fix or behavior change (e.g., lag handling, error recovery) must
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be replicated across all 9 decoders manually.
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**Location:** `src/trx-server/src/listener.rs`
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**Suggestion:** Extract a `DecoderTask<D>` generic that encapsulates the
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subscribe → watch → decode → record → forward lifecycle. Each decoder implements
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a trait with `process_block()` and `reset()` methods. Estimated reduction: ~500
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lines.
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**Resolution:** Added `ConnectionTracker` with per-IP connection limiting
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### Missing tests for critical modules
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(default: 10 concurrent connections per IP). Connections exceeding the limit
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are rejected with a log warning. Slots are released when clients disconnect.
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### ~~RigState is a 33-field flat struct~~ — RESOLVED
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**Location:** `src/trx-server/src/audio.rs` (3,826 LOC, 0 tests),
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`src/trx-client/trx-frontend/trx-frontend-http/src/api.rs` (2,831 LOC, 0 tests),
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`src/trx-client/src/main.rs` (679 LOC, 0 tests)
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**Location:** `src/trx-core/src/rig/state.rs`
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These are among the largest files in the codebase and have zero unit tests.
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`history_store.rs` and `auth.rs` now have good coverage; `handlers.rs` has 4
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tests. The remaining files require ALSA/hardware mocking infrastructure or HTTP
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test harnesses.
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**Resolution:** Decoder fields grouped into two sub-structs:
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**Suggestion:** Start with `api.rs` — actix-web's `test::TestRequest` makes
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- `DecoderConfig`: 8 `*_decode_enabled` bool fields
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endpoint testing feasible without hardware. Extract pure logic from `audio.rs`
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- `DecoderResetSeqs`: 8 `*_decode_reset_seq` u64 counters
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into testable helpers where possible.
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Both use `#[serde(flatten)]` to maintain backward-compatible JSON wire format.
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### Missing integration tests for multi-rig scenarios
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Updated across all consumers: `rig_task.rs`, `audio.rs`, `api.rs`,
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`remote_client.rs`, `server.rs` (rigctl, http-json), `codec.rs`.
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### ~~No `spawn_blocking` timeout~~ — RESOLVED
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No tests verify state isolation or command routing between rigs in multi-rig
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configurations, despite the codebase supporting per-rig task isolation with
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`HashMap<rig_id, RigHandle>` routing.
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**Location:** `src/trx-server/src/listener.rs`
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**Risk:** Cross-rig state pollution on refactors.
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**Resolution:** Satellite pass computation wrapped in `tokio::time::timeout(30s, ...)`
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**Suggestion:** Add integration test covering simultaneous frequency/mode changes
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with graceful fallback to empty results on timeout or panic.
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on two rigs with a dummy backend.
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---
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---
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## Medium Priority (P2)
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## Medium Priority (P2)
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### ~~Command handler boilerplate~~ — RESOLVED
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### Decode log silent failures
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**Location:** `src/trx-core/src/rig/controller/handlers.rs`
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**Location:** `src/decoders/trx-decode-log/src/lib.rs`
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**Resolution:** Created `rig_command!` declarative macro that generates unit-struct
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- Line 160: `let _ = state.writer.flush();` silently discards flush errors. Disk
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command implementations from a concise table of (name, preconditions, execute body).
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full or permission changes cause silent data loss.
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7 unit commands (PowerOn, PowerOff, ToggleVfo, Lock, Unlock, GetTxLimit,
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- Lines 137–150: If file rotation fails (open error), subsequent writes retry the
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GetSnapshot) now use the macro. Commands with custom fields/validation (SetFreq,
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same path indefinitely with no fallback writer or degradation logging.
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SetMode, SetPtt, SetTxLimit) remain as explicit impls.
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### ~~No command execution timeouts at CommandExecutor level~~ — ALREADY RESOLVED
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**Suggestion:** Log flush errors via `warn!`. On rotation failure, keep the old
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writer and log a degradation warning rather than silently failing.
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**Location:** `src/trx-server/src/rig_task.rs`
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### `api.rs` file size and organization
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`tokio::time::timeout(command_exec_timeout, process_command(...))` already wraps
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**Location:** `src/trx-client/trx-frontend/trx-frontend-http/src/api.rs` (2,831 LOC)
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all command execution (lines 370–425). Default timeout: 10s. No further changes
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needed.
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### ~~No forward compatibility in protocol~~ — RESOLVED
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Contains ~25+ endpoint handlers spanning decoder history, frequency/mode control,
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virtual channel management, spectrum, and SSE streams with no logical separation.
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**Location:** `src/trx-protocol/src/types.rs`, `src/trx-protocol/src/codec.rs`
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**Suggestion:** Consider splitting into `decoder_api.rs`, `vchan_api.rs`,
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`rig_api.rs` in a future refactor.
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**Resolution:**
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### Background decode state complexity
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- Added optional `protocol_version: Option<u32>` to both `ClientEnvelope` and
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`ClientResponse` (current version: 1, defined as `PROTOCOL_VERSION` constant).
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- `parse_envelope()` now distinguishes between truly malformed JSON and valid
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JSON with an unrecognised `cmd` value, enabling clearer error messages.
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### ~~`unsafe` string construction in spectrum encoding~~ — RESOLVED
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**Location:** `src/trx-client/trx-frontend/trx-frontend-http/src/background_decode.rs:350–444`
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**Location:** `src/trx-client/trx-frontend/trx-frontend-http/src/api.rs:63`
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The `run()` method's inner loop contains 8+ nested conditional branches
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(users_connected, scheduler_has_control, scheduled_bookmark_ids, virtual channel
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coverage, spectrum availability, offset bounds). Correct but difficult to modify
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or extend.
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**Resolution:** Replaced `unsafe { String::from_utf8_unchecked(out) }` with
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**Suggestion:** Extract the decision logic into a pure function returning a
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`String::from_utf8(out).expect("base64 output is always valid ASCII")`.
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`ChannelAction` enum. Improves testability and makes the state machine explicit.
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### ~~6 `#[allow(dead_code)]` annotations~~ — RESOLVED
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### Actix-web pinned to exact version
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**Resolution:**
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**Location:** `src/trx-client/trx-frontend/trx-frontend-http/Cargo.toml`
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- `is_tx_endpoint` in auth.rs: made `pub` and removed annotation (used in tests,
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available for TX access control integration).
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`actix-web = "=4.4.1"` prevents automatic patch-level security updates. Later
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- `session_ttl()` in config.rs: removed annotation (public API method).
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4.x releases may include security fixes.
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- `device` in real_iq_source.rs: annotation kept (lifetime anchor for stream).
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- `iq_tx` in vchan_impl.rs: annotation kept (broadcast sender kept alive).
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**Suggestion:** Relax to `actix-web = "4.4"` to allow patch updates, or
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- `fixed_slot_count` in vchan_impl.rs: annotation kept (documents reserved slots).
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periodically review and bump the pinned version.
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- `process_pair` in demod.rs: annotation kept (stereo AGC variant for future use).
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### Magic numbers in VDES plausibility scoring
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**Location:** `src/decoders/trx-vdes/src/lib.rs:261–280`
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Plausibility thresholds (`-35`, `15`) are inline magic numbers with no
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documentation of the scoring scale or units.
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**Suggestion:** Define named constants:
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```rust
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const PLAUSIBILITY_UNSYNCED_THRESHOLD: i32 = -35;
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const PLAUSIBILITY_LOW_CONFIDENCE_THRESHOLD: i32 = 15;
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```
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---
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---
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## Low Priority (P3)
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## Low Priority (P3)
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### ~~Missing tests for critical modules~~ — PARTIALLY RESOLVED
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### FT-817 VFO inference fragile with same frequency
|
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- `history_store.rs`: Added 4 unit tests covering timestamp generation,
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**Location:** `src/trx-server/trx-backend/trx-backend-ft817/src/lib.rs:233–265`
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serde round-trip, save/load round-trip, and expiry filtering.
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- `audio.rs`, `api.rs`, `main.rs`: Remain without tests (require ALSA/hardware
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mocking infrastructure that is beyond the scope of this pass).
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- `rig_task.rs`: Existing 4 tests adequate; integration tests deferred.
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### ~~FT-817 VFO state inference is fragile~~ — IMPROVED
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When both VFOs share the same frequency, inference defaults to VFO A. Resolved
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after VFO toggle primes both sides. Well-documented in code comments but remains
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a known limitation.
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**Location:** `src/trx-server/trx-backend/trx-backend-ft817/src/lib.rs`
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### Excessive string cloning in remote client
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**Resolution:** Improved `update_vfo_freq()` to handle the ambiguous case where
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**Location:** `src/trx-client/src/remote_client.rs`
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both VFOs share the same frequency. When VFO B has a cached frequency that
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differs from the current reading, inference correctly assigns to VFO A. When
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frequencies match (ambiguous), defaults to VFO A — resolved after VFO toggle
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primes both sides. Added detailed comments explaining the inference logic.
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### ~~VDES decoder has incomplete FEC~~ — RESOLVED
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~105 `.clone()` calls on String fields, many in hot paths during poll loops
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(spectrum, state updates). Most are necessary for ownership across async
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boundaries, but some could use borrowed references or `Cow<str>`.
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**Location:** `src/decoders/trx-vdes/src/`
|
**Suggestion:** Audit hot-path clones in `run_remote_client`, particularly around
|
||||||
|
spectrum polling loops. Low priority unless profiling shows allocation pressure.
|
||||||
|
|
||||||
Turbo FEC decoder (dual 8-state RSC with BCJR/MAP iterative decoding, QPP
|
### Missing doc comments on public decoder structs
|
||||||
interleaver), CRC-16-CCITT validation, and M.2092-1 link-layer frame parsing
|
|
||||||
(Messages 0–6) have been implemented. The decode pipeline now attempts turbo
|
|
||||||
decoding first, falls back to Viterbi, and validates CRC on both paths.
|
|
||||||
|
|
||||||
### ~~Plugin system lacks versioning and lifecycle~~ — DROPPED
|
**Location:** `src/decoders/trx-ais/src/lib.rs`, `src/decoders/trx-vdes/src/lib.rs`,
|
||||||
|
`src/decoders/trx-rds/src/lib.rs`
|
||||||
|
|
||||||
Plugin system has been removed from the codebase. No longer applicable.
|
Public decoder structs (`AisDecoder`, `VdesDecoder`, `RdsDecoder`) lack doc
|
||||||
|
comments describing valid sample rates, preconditions, and guarantees.
|
||||||
|
|
||||||
### ~~Configurator serial detection is stubbed~~ — RESOLVED
|
### Turbo decoder precondition not asserted
|
||||||
|
|
||||||
**Location:** `src/trx-configurator/src/detect.rs`
|
**Location:** `src/decoders/trx-vdes/src/turbo.rs:208–249`
|
||||||
|
|
||||||
**Resolution:** Implemented `detect_serial_ports()` using `tokio_serial::available_ports()`.
|
`turbo_decode_soft()` accesses interleaver/deinterleaver vectors without bounds
|
||||||
Returns `(port_name, description)` pairs with USB vendor/product info, Bluetooth,
|
checks. The precondition `interleaver.len() == info_len` is clear from context
|
||||||
PCI, and Unknown port type descriptions.
|
and enforced by the caller, but not formally documented or debug-asserted.
|
||||||
|
|
||||||
### Inconsistent frequency/rig naming across crates
|
### No tracing spans for decoder performance
|
||||||
|
|
||||||
Field naming varies across the codebase (`freq_hz` vs `center_hz`, `rig_id` vs
|
**Location:** `src/trx-server/src/audio.rs`
|
||||||
`id`, `model` vs `rig_model`). Analysis shows these reflect distinct semantic
|
|
||||||
contexts rather than true inconsistencies:
|
|
||||||
- `freq_hz`: dial frequency; `center_hz`: SDR capture center; `cw_center_hz`: CW tone
|
|
||||||
- `rig_id`: stable config key; `id`: runtime UUID
|
|
||||||
- `model`: hardware model string; `rig_model`: config parameter
|
|
||||||
|
|
||||||
**Decision:** Documented as intentional. Renaming would break the wire protocol
|
Decoders use `info!`/`warn!` logs but don't emit tracing spans. No way to
|
||||||
and provide minimal benefit. The `_hz` suffix convention is consistently applied.
|
measure per-decoder latency without sampling logs.
|
||||||
|
|
||||||
|
**Suggestion:** Add `tracing::info_span!` around `block_in_place()` calls for
|
||||||
|
opt-in performance measurement.
|
||||||
|
|||||||
Reference in New Issue
Block a user