Enum TraceCtxError

#[non_exhaustive]
pub enum TraceCtxError {
    TelemetryLayerNotRegistered,
    RegistrySubscriberNotRegistered,
    NoEnabledSpan,
    NoParentNodeHasTraceCtx,
}

Errors that can occur while registering the current span as a distributed trace root or attempting to retrieve the current trace context.

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.

TelemetryLayerNotRegistered

Expected a TelemetryLayer to be registered as a subscriber associated with the current Span.

RegistrySubscriberNotRegistered

Expected a tracing_subscriber::Registry to be registered as a subscriber associated with the current Span.

NoEnabledSpan

Expected the span returned by tracing::Span::current() to be enabled, with an associated subscriber.

NoParentNodeHasTraceCtx

Attempted to evaluate the current distributed trace context but none was found. If this occurs, you should check to make sure that register_dist_tracing_root is called in some parent of the current span.

Trait Implementations

impl Clone for TraceCtxError

fn clone(&self) -> TraceCtxError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TraceCtxError

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

Formats the value using the given formatter.

impl Display for TraceCtxError

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

Formats the value using the given formatter.

impl Error for TraceCtxError

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 Hash for TraceCtxError

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for TraceCtxError

fn eq(&self, other: &TraceCtxError) -> 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 TraceCtxError

impl StructuralPartialEq for TraceCtxError