Enum PolicyError 

#[non_exhaustive]
pub enum PolicyError {
    InvalidPath {
        path: String,
        message: String,
    },
    InvalidUrl {
        message: String,
    },
    InvalidInput {
        message: String,
    },
    Transport {
        host: String,
        message: String,
    },
    Status {
        status: StatusCode,
        body: String,
    },
    InvalidResponse {
        message: String,
    },
    Engine {
        message: String,
    },
}

Why a policy could not be evaluated.

Approval policies built with policy_approval turn these into a denial (or fall through, see FailureMode); the error is exposed for callers that evaluate a PolicyClient directly.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

InvalidPath

The policy path is empty or contains an empty or blank segment.

Fields

path: String

The rejected path.

message: String

Explanation.

InvalidUrl

The policy server URL was rejected by the URL policy or cannot carry the data path.

Fields

message: String

Explanation.

InvalidInput

The policy input could not be encoded.

Fields

message: String

Explanation.

Transport

The request to the policy server failed below the HTTP status layer (connection, TLS, timeout, body limits).

Fields

host: String

Host of the policy server.

message: String

Explanation.

Status

The policy server answered with a non-success status.

Fields

status: StatusCode

The status code.

body: String

The start of the response body (at most 1 KiB).

InvalidResponse

The response body is not the expected JSON document.

Fields

message: String

Explanation.

Engine

The embedded policy engine rejected the policy, the data document or the rule path, or failed during evaluation.

Fields

message: String

Engine message.

Trait Implementations

impl Clone for PolicyError

fn clone(&self) -> PolicyError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PolicyError

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

Formats the value using the given formatter.

impl Display for PolicyError

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

Formats the value using the given formatter.

impl Eq for PolicyError

impl Error for PolicyError

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 PartialEq for PolicyError

fn eq(&self, other: &PolicyError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for PolicyError