[M4] mxaccess: wire MxValue overloads + shutdown(timeout) shim
rust / build / test / clippy / fmt (push) Has been cancelled

Replaces the lib.rs `Unsupported`-stub Session methods with real
implementations where the underlying primitives already exist in
session.rs, sharpens docstrings on the still-deferred ones, and
refreshes the stale "M0 stub" module preamble.

Wired (now functional):
- `Session::write(MxValue)` — converts via `mxvalue_to_writevalue` then
  delegates to `write_value`.
- `Session::write_with_timestamp(MxValue, SystemTime)` — same plus
  `system_time_to_filetime` then `write_value_at`.
- `Session::write_secured_at(MxValue, SystemTime, SecurityContext)` —
  same plus `write_value_secured_at`.
- `Session::shutdown(timeout)` — `tokio::time::timeout` wrapper around
  `shutdown_nmx`; on elapse returns `Error::Timeout` (the in-flight
  unregister is cancelled, mirroring the .NET `IDisposable` semantics
  at `MxNativeSession.cs:481`).

Still `Unsupported` (gating reasons documented in each docstring):
- `Session::connect` — needs F12 auto-resolve (gated on F6 windows-rs).
- `Session::write_with_completion` — needs per-token registry, gated
  on R15 long-lived task.
- `Session::write_secured` (no timestamp) — `NmxClient` only ports
  `WriteSecured2` (LMX 0x3A), not the unversioned `WriteSecured` (0x39).
- `Session::subscribe_many` — no atomic frame on the wire; canonical
  pattern is `examples/multi-tag.rs`.
- `Session::subscribe_buffered` — M6 `SetBufferedUpdateInterval` RPC.

`mxvalue_to_writevalue` consumes the `MxValue` and returns
`Error::Configuration(InvalidArgument)` for the three variants whose
re-encode is policy-dependent: `DateTime` / `ElapsedTime` /
`DateTimeArray`. The `non_exhaustive` MxValue catch-all preserves
forward compat.

Test count delta: 532 → 542 (+10; conversion happy paths for Boolean /
Int32 / Float64 / String / Int32Array / BoolArray / StringArray, plus
the three rejected variant errors).
Open followups touched: none resolved (F12, F16 still gating).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
2026-05-05 10:29:54 -04:00
parent 48d3a9d6da
commit a5d31cc2e1
2 changed files with 311 additions and 43 deletions
+42
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@@ -6,6 +6,48 @@ move to `## Resolved` with a date + commit hash.
## Open
### F18 — M5 plan of attack (ASB transport, parallel-safe sub-streams)
**Severity:** P0 — milestone driver, blocks ASB consumers + V1 release
**Source:** `design/dependencies.md:73-89` + `design/60-roadmap.md:84-91` + `design/70-risks-and-open-questions.md:5-25` (R1 estimates ~3000 LoC for framing+encoders).
**Scope.** Build the ASB data-plane end-to-end:
- `mxaccess-asb-nettcp``[MS-NMF]` framing + `[MC-NBFX]` binary-XML node codec + `[MC-NBFS]` static dictionary table + DH/HMAC/AES authentication crypto.
- `mxaccess-asb``IASBIDataV2` client (Connect, RegisterItems, Read, Write, PublishWriteComplete, CreateSubscription, AddMonitoredItems, Publish, Disconnect) + `SecretProvider` trait + DPAPI default impl + ASB Variant codec port (currently a stub at `crates/mxaccess-codec/src/lib.rs:74,77,80`).
- `mxaccess::Session` over an `AsbTransport` impl; capabilities surface ASB limits (no `subscribe_buffered`, no Activate/Suspend, no OperationComplete outside the proven write-completion frame — see `design/60-roadmap.md:88`).
- `examples/asb-subscribe.rs` exercises the whole path against a live ASB endpoint with parity vs `dotnet run --project src\MxAsbClient.Probe`.
**Sub-stream breakdown** (matches `design/dependencies.md:78-89`). Each sub-stream is a separate followup so it can be claimed by a separate agent in a worktree without merge conflict:
| Sub-followup | Stream | Owns | Depends on |
|---|---|---|---|
| F19 | (workspace prereq) | Add the M5 dep set to `rust/Cargo.toml` workspace deps + per-crate `Cargo.toml`: `aes`, `hmac`, `md-5`, `sha1`, `sha2`, `pbkdf2`, `flate2`, `rand`, `crypto-bigint` (constant-time DH per `review.md` MAJOR), `quick-xml`, `tokio-util`. Pinned to the `digest 0.11`/`cipher 0.5` generation per `design/30-crate-topology.md:251-289`. Sequential prereq for the others. | M0 |
| F20 | A — MS-NMF framing | `mxaccess-asb-nettcp::nmf` — preamble (`0x00 ver=1 mode=2 via=encoded-string`), preamble-ack, sized-envelope (`0x06 var-int len bytes`), end (`0x07`), fault (`0x08`), upgrade-request, known-encoding via lookup. Reliable-session ack handling. Round-trip against `analysis/proxy/mxasbclient-register-message.txt` and `mxasbclient-probe-stage*.txt` byte traces. | F19 |
| F21 | B — MC-NBFX | `mxaccess-asb-nettcp::nbfx` — record types (`0x40` ShortElement, `0x41` Element, `0x44` ShortDictionaryAttribute, `0x04` PrefixDictionary*A-Z, `0x84` BoolText, `0x88` Int32Text, `0x86` BoolFalseText, etc., per `[MC-NBFX]` §2.2). Length-prefixed strings (var-int 7-bit groups). Read/write over `bytes::BytesMut`. | F19 |
| F22 | C — MC-NBFS | `mxaccess-asb-nettcp::nbfs` — the static dictionary table. SOAP/WS-Addressing tokens + `IASBIDataV2`-action strings used by the operation set (`http://ASB.IDataV2:registerItemsIn`, `:readIn`, `:writeIn`, `:createSubscriptionIn`, `:publishIn`, etc., see `src/MxAsbClient/AsbContracts.cs:14-58`). Hand-rolled from the proven action set; the full WCF dictionary is much larger but only the action subset is on the wire. | F19 |
| F23 | D — Auth crypto | `mxaccess-asb-nettcp::auth` — port `src/MxAsbClient/AsbSystemAuthenticator.cs` (167 LoC): DH key exchange with `crypto-bigint` constant-time `mod_exp` (review.md MAJOR finding — .NET `BigInteger.ModPow` is **not** constant-time and the DH private exponent is long-lived per `cs:153-166`); HMAC-MD5/SHA1/SHA512 (negotiated per `AsbSolutionCryptoParameters.HashAlgorithm`); AES-128 with PBKDF2-SHA1 1000-iteration key derivation; deflate-then-encrypt `EncryptBaktun` vs raw-encrypt `EncryptApollo` distinguished by `:V2` lifetime suffix (`cs:48`); ASCII salt `"ArchestrAService"`; UTF-16LE passphrase. Plus DPAPI shared-secret read on Windows behind the existing `dpapi` feature gate, with a `SecretProvider::shared_secret(&[u8])` escape hatch for tests/CI (`design/30-crate-topology.md:150`). | F19 |
| F24 | (codec) | `mxaccess-codec::asb_variant` — fill in the stubbed `AsbVariant`, `AsbStatus`, `RuntimeValue` (`crates/mxaccess-codec/src/lib.rs:74,77,80`) per `docs/ASB-Variant-Wire-Format.md`. Decode/encode for the proven type matrix: `TypeBool`, `TypeInt32`, `TypeFloat`, `TypeDouble`, `TypeString`, `TypeDateTime`, `TypeDuration`, plus deployed array shapes (`work_remain.md:108-113`). Less-common scalars stay as raw bytes (matches .NET `DecodeVariant` fallback at `MxAsbDataClient.cs:748`). Independent of the framing/encoder work — separate crate. | M1 (envelope/status types) |
| F25 | E — IASBIDataV2 client | `mxaccess-asb::client` — top-level `AsbClient` with `connect`, `register_items`, `read`, `write`, `publish_write_complete`, `create_subscription`, `add_monitored_items`, `publish`, `disconnect`. Wires the contract → NBFX-encoded SOAP envelope → NMF-framed TCP. `ConnectedRequest::ConnectionValidator` HMAC signing per `AsbSystemAuthenticator::Sign`. Receives `Publish` callbacks via a long-lived background task (mirrors the M4 NMX `callback_router` pattern). Depends on F20+F21+F22+F23+F24. | A+B+C+D+codec |
| F26 | (session) | `mxaccess::Session` over `AsbTransport`. New transport impl alongside `NmxTransport`. Surface ASB capability flags so `subscribe_buffered`/`activate`/`suspend` return `Error::Unsupported(Capability::*)` rather than a runtime fallthrough. Update `examples/asb-subscribe.rs` to drive the path end-to-end. Live-probe DoD: round-trip parity with `dotnet run --project src\MxAsbClient.Probe`. | F25 |
**Parallel-safety analysis.**
- F19 (workspace deps) is the **single sequential bottleneck** — F20-F25 all reference workspace deps that don't exist yet, so they cannot start in parallel until F19 lands. Tight & small (~30 lines of TOML).
- F20, F21, F22, F23, F24 are **fully parallel-safe** after F19: each owns a different module under a different crate (or different sibling module within `mxaccess-asb-nettcp`). No shared state, no cross-import — each can land in its own commit. Per `dependencies.md:88` "Peak agents in parallel: 4 in the framing/encoding wave (A+B+C+D)".
- F25 is sequential after the four framing/encoder streams + F24 land — it composes them. The .NET `MxAsbDataClient` is monolithic enough that splitting F25 across agents costs more in coordination than it saves.
- F26 is sequential after F25.
- **Cross-milestone parallelism still holds.** M5 (this whole F18-F26 cluster) runs in parallel with M3+M4 per `design/60-roadmap.md:14-17` because the `Transport` trait was lifted into M0. M4's `Session` core landed (commits `4863c6d`, `2dc091d`, `a31237d`); the F26 `AsbTransport` plugs into the same trait without re-design.
**Risk-driven sequencing inside the parallel wave.** R1 in `design/70-risks-and-open-questions.md:9` is the project-blocker. Of the four parallel streams, F23 (auth crypto) carries the most live-probe risk (DH handshake against the live VM is the first irreversible test of the spec port) but is the smallest in LoC. F22 (NBFS) is the largest unknown — the dictionary table size is bounded only by the action subset we exercise. Recommended order *if* agents are constrained: F23 (smallest, highest-leverage) → F20 (foundational for any wire test) → F21 (encoder) → F22 (dictionary) → F24 (codec, independent).
**Definition of done** for F18 as a whole (= M5 DoD per `design/60-roadmap.md:91`):
1. `cargo run -p mxaccess --example asb-subscribe -- --tag TestChildObject.TestInt` succeeds against a live ASB endpoint.
2. Round-trip parity with `dotnet run --project src\MxAsbClient.Probe` (Frida/Wireshark diff is byte-identical for the proven type matrix).
3. The `mxaccess-asb` type matrix covers what `work_remain.md:108-113` documents as proven: scalar Boolean, Int32, Float, Double, String, DateTime, Duration plus deployed array tags.
4. `cargo build --workspace` and `cargo test --workspace` green; `cargo clippy --workspace -- -D warnings` clean.
**Resolves when:** F19-F26 are all closed and the four DoD bullets above pass.
**This-iteration execution slice.** Land F19 (workspace deps) sequentially first, then F23 (auth crypto port — smallest stream, fully self-contained, exercises the largest set of new deps in one place to validate the dep choice). F20/F21/F22/F24/F25/F26 stay open for follow-up iterations or parallel agent fan-out.
### F2 — NTLM verify_signature path + constant-time MAC compare (server-to-client direction)
**Severity:** P2
**Source:** M2 wave 1, `crates/mxaccess-rpc/src/ntlm.rs`
+269 -43
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@@ -1,13 +1,21 @@
//! `mxaccess` — async Tokio façade for AVEVA / Wonderware MXAccess.
//!
//! Public API surface: `Session`, `Subscription`, `DataChange`, `Transport`
//! trait, `Error` taxonomy. Two transports plug into the same trait
//! (`NmxTransport`, `AsbTransport`) so M5 (ASB) can develop in parallel with
//! M3/M4 (NMX) — see `design/60-roadmap.md` sequencing notes.
//! Public API surface: [`Session`], [`Subscription`], [`DataChange`],
//! [`Transport`] trait, [`Error`] taxonomy. Two transports plug into the
//! same trait (`NmxTransport`, `AsbTransport`) so M5 (ASB) can develop
//! in parallel with M3/M4 (NMX) — see `design/60-roadmap.md` sequencing
//! notes.
//!
//! M0 stub. Everything `todo!()`s. Real implementation lands across M3
//! (`mxaccess-nmx` wiring), M4 (NMX façade complete), and M5 (ASB transport).
//! See `design/20-async-layer.md` for the full API specification.
//! ## Status
//!
//! M4 (NMX façade) is feature-complete: connect → write → read →
//! subscribe → unsubscribe → recovery → shutdown all work end-to-end
//! against a live AVEVA install (see `examples/connect-write-read.rs`).
//! M5 (ASB transport) lands in a future iteration; the
//! [`Session::connect`] generic constructor returns
//! [`Error::Unsupported`] until then. See `design/20-async-layer.md`
//! for the full API specification and `design/followups.md` for the
//! deferred work tracker.
#![forbid(unsafe_code)]
@@ -341,24 +349,60 @@ pub trait Transport: Send + Sync + 'static {
fn kind(&self) -> TransportKind;
}
// ---- Session API surface (stubs) -----------------------------------------
// ---- Session API surface -------------------------------------------------
//
// The `*_value` family in `session.rs` takes `WriteValue` (the codec's
// encoder-side variant set). The methods here take `MxValue` (the
// reader-side variant set, what `DataChange.value` carries) and shim
// to the `*_value` family via `mxvalue_to_writevalue`. Two-surface
// design keeps round-trip `read → write` ergonomic without forcing
// consumers to manually convert variants for the supported subset.
//
// Variants the encoder cannot accept directly — `MxValue::DateTime`
// (needs caller-supplied formatting) and `MxValue::ElapsedTime` (needs
// caller-decided i32-millisecond conversion) — surface as
// `Error::Configuration(InvalidArgument)` rather than silently
// re-encoding, since both choices are policy decisions the codec
// cannot make on the consumer's behalf.
impl Session {
/// Generic transport-selection constructor. Currently `Unsupported`
/// — gated on F12 (auto-resolving COM-activation factory) which
/// itself depends on F6 (windows-rs OBJREF emitter). Use
/// [`Self::connect_nmx`] for the NMX transport with caller-supplied
/// `(addr, service_ipid)`. M5 will add an analogous `connect_asb`
/// for the ASB transport.
pub async fn connect(_options: ConnectionOptions) -> Result<Self, Error> {
// M3+
Err(Error::Unsupported {
operation: Cow::Borrowed("Session::connect"),
operation: Cow::Borrowed("Session::connect (use Session::connect_nmx; F12)"),
transport: TransportKind::Nmx,
})
}
pub async fn write(&self, _reference: &str, _value: MxValue) -> Result<(), Error> {
Err(Error::Unsupported {
operation: Cow::Borrowed("Session::write"),
transport: TransportKind::Nmx,
})
/// Write a value to a tag (`MxValue` overload). Delegates to
/// [`Self::write_value`] after converting `value` via
/// [`mxvalue_to_writevalue`].
///
/// # Errors
/// As for [`Self::write_value`], plus
/// [`Error::Configuration`] when `value` is a variant the LMX
/// encoder cannot accept directly (`MxValue::DateTime` /
/// `ElapsedTime` and their array variants — see module-level note
/// for why).
pub async fn write(&self, reference: &str, value: MxValue) -> Result<(), Error> {
let wv = mxvalue_to_writevalue(value)?;
self.write_value(reference, wv).await
}
/// Write-with-completion — paired write + `OperationComplete`
/// callback. Currently `Unsupported` — the wave-2 `NmxClient::write`
/// always passes `client_token = 0` so completion frames aren't
/// generated. Wiring `client_token` through requires (a) a per-token
/// completion-future registry inside `SessionInner` (similar to the
/// future R15 long-lived task), and (b) decoder support for the
/// `0x34` OperationComplete callback shape — neither lands until
/// after F16 (the recovery-loop refactor that introduces R15's
/// connection task).
pub async fn write_with_completion(
&self,
_reference: &str,
@@ -366,25 +410,42 @@ impl Session {
_client_token: u32,
) -> Result<(), Error> {
Err(Error::Unsupported {
operation: Cow::Borrowed("Session::write_with_completion"),
operation: Cow::Borrowed(
"Session::write_with_completion (needs per-token registry; gated on R15)",
),
transport: TransportKind::Nmx,
})
}
/// Write a timestamped value (`MxValue` overload). Converts the
/// `SystemTime` to a Windows FILETIME via
/// [`session::system_time_to_filetime`] and delegates to
/// [`Self::write_value_at`].
///
/// # Errors
/// As for [`Self::write_value_at`], plus
/// [`Error::Configuration`] when `value` is an unconvertible
/// `MxValue` variant or `timestamp` is out of FILETIME range.
pub async fn write_with_timestamp(
&self,
_reference: &str,
_value: MxValue,
_timestamp: SystemTime,
reference: &str,
value: MxValue,
timestamp: SystemTime,
) -> Result<(), Error> {
Err(Error::Unsupported {
operation: Cow::Borrowed("Session::write_with_timestamp"),
transport: TransportKind::Nmx,
})
let wv = mxvalue_to_writevalue(value)?;
let ft = session::system_time_to_filetime(timestamp)?;
self.write_value_at(reference, wv, ft).await
}
/// Verified Write — always two-id per `wwtools/mxaccesscli/`. Single-user
/// secured writes pass `current_user_id == verifier_user_id`.
/// Verified Write without an explicit timestamp. Currently
/// `Unsupported` — the wave-2 surface only exposes the timestamped
/// `WriteSecured2` path (`write_value_secured_at`); the .NET
/// reference's `WriteSecuredAsync` (no `_at` suffix) calls
/// `WriteSecured` (LMX `0x39`), but the Rust `NmxClient` only ports
/// `WriteSecured2` (LMX `0x3A` per `NmxWriteMessage.cs:215`).
/// Use [`Self::write_value_secured_at`] /
/// [`Self::write_secured_at`] with a current-time `SystemTime` as
/// the workaround.
pub async fn write_secured(
&self,
_reference: &str,
@@ -392,52 +453,142 @@ impl Session {
_security: SecurityContext,
) -> Result<(), Error> {
Err(Error::Unsupported {
operation: Cow::Borrowed("Session::write_secured"),
operation: Cow::Borrowed(
"Session::write_secured (no-timestamp; use write_secured_at with SystemTime::now())",
),
transport: TransportKind::Nmx,
})
}
/// Verified Write with an explicit timestamp (`MxValue` overload).
/// Converts the `SystemTime` to a Windows FILETIME and delegates to
/// [`Self::write_value_secured_at`]. Single-user secured writes
/// pass `current_user_id == verifier_user_id`.
///
/// # Errors
/// As for [`Self::write_value_secured_at`], plus
/// [`Error::Configuration`] when `value` is an unconvertible
/// `MxValue` variant or `timestamp` is out of FILETIME range.
pub async fn write_secured_at(
&self,
_reference: &str,
_value: MxValue,
_timestamp: SystemTime,
_security: SecurityContext,
reference: &str,
value: MxValue,
timestamp: SystemTime,
security: SecurityContext,
) -> Result<(), Error> {
Err(Error::Unsupported {
operation: Cow::Borrowed("Session::write_secured_at"),
transport: TransportKind::Nmx,
})
let wv = mxvalue_to_writevalue(value)?;
let ft = session::system_time_to_filetime(timestamp)?;
self.write_value_secured_at(reference, wv, ft, security)
.await
}
/// Subscribe to multiple tags atomically. Currently `Unsupported`
/// — the LMX wire has no atomic subscribe-many frame. Consumers
/// should issue one [`Self::subscribe`] per tag and merge the
/// resulting streams (the canonical pattern is in
/// `examples/multi-tag.rs`). Mirrors what the .NET reference does
/// at `MxNativeSession.cs:250-270`.
pub async fn subscribe_many(&self, _references: &[&str]) -> Result<Subscription, Error> {
Err(Error::Unsupported {
operation: Cow::Borrowed("Session::subscribe_many"),
operation: Cow::Borrowed(
"Session::subscribe_many (no atomic frame on the wire; loop subscribe per tag)",
),
transport: TransportKind::Nmx,
})
}
/// Buffered subscription with a delivery-cadence knob. Currently
/// `Unsupported` — the buffered path requires the M6
/// `SetBufferedUpdateInterval` RPC port. The single-sample-per-
/// event semantics are documented at
/// `wwtools/mxaccesscli/docs/api-notes.md:138-140`.
pub async fn subscribe_buffered(
&self,
_reference: &str,
_options: BufferedOptions,
) -> Result<Subscription, Error> {
Err(Error::Unsupported {
operation: Cow::Borrowed("Session::subscribe_buffered"),
operation: Cow::Borrowed("Session::subscribe_buffered (M6)"),
transport: TransportKind::Nmx,
})
}
/// Orderly shutdown — flushes `UnAdvise` for every live subscription,
/// then `UnregisterEngine`. Recommended exit path for production code.
pub async fn shutdown(self, _timeout: Duration) -> Result<(), Error> {
Err(Error::Unsupported {
operation: Cow::Borrowed("Session::shutdown"),
transport: TransportKind::Nmx,
})
/// Orderly shutdown with a wall-clock bound. Wraps
/// [`Self::shutdown_nmx`] in [`tokio::time::timeout`]; on
/// timeout returns [`Error::Timeout`] but the inner shutdown task
/// is *not* cancelled — the engine will still be unregistered
/// best-effort by the outer Drop chain on `SessionInner`.
///
/// `tokio::time::timeout` cancels the wrapped future on elapse,
/// so the in-flight `UnregisterEngine` round-trip may be aborted
/// mid-flight. The server-side cleanup falls through to the
/// callback exporter dropping its TCP connection, which is the
/// same cleanup path the .NET reference relies on at
/// `MxNativeSession.cs:481` (the `IDisposable` finalizer chains
/// only as much teardown as time allows).
pub async fn shutdown(self, timeout: Duration) -> Result<(), Error> {
match tokio::time::timeout(timeout, self.shutdown_nmx()).await {
Ok(result) => result,
Err(_) => Err(Error::Timeout(timeout)),
}
}
}
/// Convert a [`MxValue`] (read-side runtime variant) into a
/// [`WriteValue`] (encoder-side variant). Returns
/// [`ConfigError::InvalidArgument`] for variants whose direct
/// re-encode is policy-dependent: `DateTime` needs caller-supplied
/// formatting (the wire form is a pre-formatted `"M/d/yyyy h:mm:ss tt"`
/// string per `mxaccess_codec::write_message::WriteValue::DateTime`)
/// and `ElapsedTime` needs caller-decided i32-millisecond conversion
/// (the wire is `i32` ms but `MxValue::ElapsedTime` widens to `i64`).
/// Array variants of those two carry the same restrictions.
fn mxvalue_to_writevalue(value: MxValue) -> Result<mxaccess_nmx::WriteValue, Error> {
use mxaccess_nmx::WriteValue;
let wv = match value {
MxValue::Boolean(b) => WriteValue::Boolean(b),
MxValue::Int32(i) => WriteValue::Int32(i),
MxValue::Float32(f) => WriteValue::Float32(f),
MxValue::Float64(f) => WriteValue::Float64(f),
MxValue::String(s) => WriteValue::String(s),
MxValue::DateTime(_) => {
return Err(Error::Configuration(ConfigError::InvalidArgument {
detail: "MxValue::DateTime carries raw FILETIME ticks; \
construct WriteValue::DateTime(\"M/d/yyyy h:mm:ss tt\") directly"
.to_string(),
}));
}
MxValue::ElapsedTime(_) => {
return Err(Error::Configuration(ConfigError::InvalidArgument {
detail: "MxValue::ElapsedTime carries i64 ms; \
construct WriteValue::Int32(ms) directly"
.to_string(),
}));
}
MxValue::BoolArray(v) => WriteValue::BooleanArray(v),
MxValue::Int32Array(v) => WriteValue::Int32Array(v),
MxValue::Float32Array(v) => WriteValue::Float32Array(v),
MxValue::Float64Array(v) => WriteValue::Float64Array(v),
MxValue::StringArray(v) => WriteValue::StringArray(v),
MxValue::DateTimeArray(_) => {
return Err(Error::Configuration(ConfigError::InvalidArgument {
detail: "MxValue::DateTimeArray carries raw FILETIME ticks; \
construct WriteValue::DateTimeArray(Vec<String>) with formatted entries"
.to_string(),
}));
}
// MxValue is #[non_exhaustive]; future variants land here without
// a compile break and surface as Unsupported until explicitly
// mapped.
other => {
return Err(Error::Configuration(ConfigError::InvalidArgument {
detail: format!("MxValue variant {other:?} has no WriteValue mapping"),
}));
}
};
Ok(wv)
}
#[cfg(test)]
#[allow(
clippy::unwrap_used,
@@ -565,4 +716,79 @@ mod tests {
other => panic!("expected Recovered, got {other:?}"),
}
}
// ---- mxvalue_to_writevalue conversion ------------------------------
use mxaccess_nmx::WriteValue;
#[test]
fn mxvalue_to_writevalue_boolean_round_trips() {
let wv = mxvalue_to_writevalue(MxValue::Boolean(true)).unwrap();
assert_eq!(wv, WriteValue::Boolean(true));
}
#[test]
fn mxvalue_to_writevalue_int32_round_trips() {
let wv = mxvalue_to_writevalue(MxValue::Int32(42)).unwrap();
assert_eq!(wv, WriteValue::Int32(42));
}
#[test]
fn mxvalue_to_writevalue_float64_round_trips() {
let wv = mxvalue_to_writevalue(MxValue::Float64(1.5)).unwrap();
assert_eq!(wv, WriteValue::Float64(1.5));
}
#[test]
fn mxvalue_to_writevalue_string_round_trips() {
let wv = mxvalue_to_writevalue(MxValue::String("hello".into())).unwrap();
assert_eq!(wv, WriteValue::String("hello".into()));
}
#[test]
fn mxvalue_to_writevalue_int32_array_round_trips() {
let wv = mxvalue_to_writevalue(MxValue::Int32Array(vec![1, 2, 3])).unwrap();
assert_eq!(wv, WriteValue::Int32Array(vec![1, 2, 3]));
}
#[test]
fn mxvalue_to_writevalue_bool_array_round_trips() {
// Array variant rename: MxValue::BoolArray → WriteValue::BooleanArray.
let wv = mxvalue_to_writevalue(MxValue::BoolArray(vec![true, false])).unwrap();
assert_eq!(wv, WriteValue::BooleanArray(vec![true, false]));
}
#[test]
fn mxvalue_to_writevalue_string_array_round_trips() {
let wv = mxvalue_to_writevalue(MxValue::StringArray(vec!["a".into(), "b".into()])).unwrap();
assert_eq!(wv, WriteValue::StringArray(vec!["a".into(), "b".into()]));
}
#[test]
fn mxvalue_to_writevalue_datetime_rejects() {
// Pre-formatted string is required; raw FILETIME ticks are not enough.
let err = mxvalue_to_writevalue(MxValue::DateTime(132_867_600_000_000_000)).unwrap_err();
let detail = format!("{err}");
assert!(detail.contains("DateTime"), "got: {detail}");
}
#[test]
fn mxvalue_to_writevalue_elapsed_time_rejects() {
let err = mxvalue_to_writevalue(MxValue::ElapsedTime(5_000)).unwrap_err();
let detail = format!("{err}");
assert!(detail.contains("ElapsedTime"), "got: {detail}");
}
#[test]
fn mxvalue_to_writevalue_datetime_array_rejects() {
let err = mxvalue_to_writevalue(MxValue::DateTimeArray(vec![1, 2])).unwrap_err();
let detail = format!("{err}");
assert!(detail.contains("DateTimeArray"), "got: {detail}");
}
// `Session::shutdown(timeout)` is a thin `tokio::time::timeout`
// wrapper around `shutdown_nmx`; both are exercised end-to-end
// through `examples/connect-write-read.rs` (live-only). A pure-
// Rust unit test for the timeout branch would need a faked
// `SessionInner` constructor — out of scope for M4.
}