Enum ProviderRegistryError 

pub enum ProviderRegistryError {
    EmptyProviderName,
    InvalidProviderName {
        name: String,
        reason: String,
    },
    DuplicateProviderName {
        name: ProviderName,
    },
    DuplicateProviderCandidate {
        name: ProviderName,
    },
    UnknownProvider {
        name: ProviderName,
    },
    ProviderUnavailable {
        name: ProviderName,
        source: ProviderCreateError,
    },
    ProviderCreate {
        name: ProviderName,
        source: ProviderCreateError,
    },
    NoAvailableProvider {
        failures: Vec<ProviderFailure>,
    },
    EmptyRegistry,
}

Error returned by provider registries.

Variants

EmptyProviderName

A provider id, alias, or selector is empty after trimming.

InvalidProviderName

A provider name contains unsupported characters.

Fields

name: String

Invalid provider name after trimming.

reason: String

Human-readable validation failure reason.

DuplicateProviderName

A provider id or alias conflicts with an already registered name.

Fields

name: ProviderName

Conflicting provider name.

DuplicateProviderCandidate

A named selection repeats a provider candidate.

Fields

name: ProviderName

Repeated provider candidate name.

UnknownProvider

No registered provider matches the requested selector.

Fields

name: ProviderName

Requested provider selector.

ProviderUnavailable

The selected provider is not available in the current environment.

Fields

name: ProviderName

Requested provider selector.

source: ProviderCreateError

Provider-level unavailability error.

ProviderCreate

The selected provider failed while creating a service.

Fields

name: ProviderName

Requested provider selector.

source: ProviderCreateError

Provider-level creation error.

NoAvailableProvider

All configured provider candidates failed.

Fields

failures: Vec<ProviderFailure>

Candidate failures in the order they were tried.

EmptyRegistry

No providers are registered.

Trait Implementations

impl Clone for ProviderRegistryError

fn clone(&self) -> ProviderRegistryError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProviderRegistryError

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

Formats the value using the given formatter.

impl Display for ProviderRegistryError

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

Formats the value using the given formatter.

impl Error for ProviderRegistryError

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<ProviderRegistryError> for MimeError

fn from(error: ProviderRegistryError) -> Self

Converts a generic SPI registry error into a MIME-domain error.