Enum ProviderAvailability 

pub enum ProviderAvailability {
    Available,
    Unavailable {
        reason: String,
    },
}

Availability of a provider in the current runtime environment.

Variants

Available

The provider can create service instances.

Unavailable

The provider cannot create service instances.

Fields

reason: String

Human-readable reason explaining why the provider is unavailable.

Implementations

impl ProviderAvailability

pub fn unavailable(reason: &str) -> ProviderAvailability

Creates an unavailable state with a human-readable reason.

Parameters

• reason: Reason shown to callers when the provider cannot be used.

Returns

Unavailable provider state.

pub fn is_available(&self) -> bool

Tells whether this state allows service creation.

Returns

true when the provider is available.

Trait Implementations

impl Clone for ProviderAvailability

fn clone(&self) -> ProviderAvailability

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProviderAvailability

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

Formats the value using the given formatter.

impl PartialEq for ProviderAvailability

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for ProviderAvailability

impl StructuralPartialEq for ProviderAvailability