Struct HostError 

pub struct HostError { /* private fields */ }

A typed host/runtime failure, kept separate from the operation’s application return type.

The effect guarantee is mandatory. Host runtimes must ignore the diagnostic when producing a wire response; it is bounded here for local observability but can still contain backend-private information.

Implementations

impl HostError

pub fn internal( message: impl Into<String>, effect_guarantee: EffectGuarantee, ) -> Self

Creates an internal Host failure with an explicit effect guarantee.

pub fn resource_limit( message: impl Into<String>, effect_guarantee: EffectGuarantee, ) -> Self

Creates a resource-limit Host failure with an explicit effect guarantee.

pub fn kind(&self) -> HostErrorKind

Returns the typed Host failure category.

pub fn effect_guarantee(&self) -> EffectGuarantee

Returns the operation-effect guarantee attached by the implementation.

pub fn message(&self) -> &str

Returns the bounded local diagnostic message.

Host runtimes must not place this value in protocol responses because it can contain backend paths, credentials, or other private details.

Trait Implementations

impl Clone for HostError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HostError

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

Formats the value using the given formatter.

impl Display for HostError

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

Formats the value using the given formatter.

impl Eq for HostError

impl Error for HostError

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 HostError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for HostError