Enum ClassifierError 

pub enum ClassifierError {
    ModelNotFound(String),
    ChecksumMismatch {
        file: String,
        expected: String,
        actual: String,
    },
    ChecksumsMissing,
    ChecksummedFileMissing(String),
    TokenizationFailed(String),
    OnnxError(String),
    ManifestAnchorInvalid(String),
    OnnxRuntimeMissing {
        hint: String,
    },
    VersionMismatch {
        model_version: String,
        crate_version: String,
    },
    Timeout {
        timeout_ms: u64,
    },
}

Errors from the intent classification stage.

Variants

ModelNotFound(String)

Model file not found

ChecksumMismatch

Model checksum mismatch on a present file (tampering).

NL04: ALWAYS fatal regardless of allow_unverified. Mirrors the shape of NlError::ChecksumMismatch so the boundary between the classifier-internal error and the top-level NL error stays clean.

Fields

file: String

expected: String

actual: String

ChecksumsMissing

checksums.json is absent from the model directory (strict mode).

ChecksummedFileMissing(String)

A file referenced by the integrity manifest is missing from disk (strict mode).

TokenizationFailed(String)

Tokenization failed

OnnxError(String)

ONNX Runtime error

ManifestAnchorInvalid(String)

Custom-mode local manifest cannot anchor checksums.json.

Raised when a custom model directory’s manifest.json is missing, malformed, or lacks files["checksums.json"]. This is distinct from missing checksums.json itself: the operator escape hatch can downgrade missing checksums, but it must not silently remove the custom-mode manifest trust anchor.

OnnxRuntimeMissing

ONNX Runtime shared library could not be loaded.

Raised by crate::classifier::IntentClassifier::load when the ort crate’s Session::builder() chain fails (or panics) due to libonnxruntime being absent on the host. The hint field carries a platform-aware remediation string (apt / brew / .dll download URL) baked at compile time. NL08 surfaces this variant across CLI / MCP / LSP / daemon as an actionable diagnostic rather than the opaque OnnxError(...) string the lower-level crate would otherwise produce.

Always converted to NlError::OnnxRuntimeMissing at the From<ClassifierError> boundary — the top-level error variant is the wire-facing name.

Fields

hint: String

Operator-facing remediation hint (platform-specific install instructions). Populated by [crate::classifier::model::onnx_runtime_install_hint].

VersionMismatch

Model version incompatible

Fields

model_version: String

crate_version: String

Timeout

Inference timeout

Fields

timeout_ms: u64

Trait Implementations

impl Debug for ClassifierError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for ClassifierError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for ClassifierError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<ClassifierError> for NlError

fn from(err: ClassifierError) -> Self

Converts to this type from the input type.