Enum GuardrailError 

pub enum GuardrailError {
    StageFailed {
        stage: String,
        source: Box<dyn Error + Send + Sync>,
    },
    Config(String),
    Upstream(String),
    Serialization(Error),
    Io(Error),
    Regex(Error),
    Internal(String),
}

Top-level error type used throughout guardrail-rs.

All errors are variants of this enum so that callers can handle them uniformly regardless of which crate or stage produced them.

Variants

StageFailed

A pipeline stage failed during evaluation.

Fields

stage: String

The name of the stage that failed.

source: Box<dyn Error + Send + Sync>

The underlying error.

Config(String)

A configuration value was invalid or missing.

Upstream(String)

The upstream LLM request failed (reqwest-errors feature disabled).

Carries a pre-formatted message instead of the original error type, avoiding a hard dependency on reqwest in minimal builds.

Serialization(Error)

JSON serialization or deserialization failed.

Io(Error)

An I/O error occurred.

Regex(Error)

A regex pattern failed to compile.

Internal(String)

An internal invariant was violated (should never happen in production).

Implementations

impl GuardrailError

pub fn stage_failed( stage: impl Into<String>, source: impl Error + Send + Sync + 'static, ) -> Self

Wrap any error as a StageFailed variant.

Examples

use guardrail_core::GuardrailError;

let err = GuardrailError::stage_failed(
    "my_stage",
    std::io::Error::new(std::io::ErrorKind::Other, "disk full"),
);
assert!(err.to_string().contains("my_stage"));

pub fn upstream(message: impl Into<String>) -> Self

Construct an Upstream error from a message string.

Available regardless of the reqwest-errors feature, so call sites that just want to report a string don’t need to feature-gate.

Examples

use guardrail_core::GuardrailError;

let err = GuardrailError::upstream("connection refused");
assert!(err.to_string().contains("connection refused"));

Trait Implementations

impl Debug for GuardrailError

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

Formats the value using the given formatter.

impl Display for GuardrailError

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

Formats the value using the given formatter.

impl Error for GuardrailError

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<Error> for GuardrailError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for GuardrailError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for GuardrailError

fn from(source: Error) -> Self

Converts to this type from the input type.