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pub struct SpanContext { /* private fields */ }
Available on crate feature trace only.
Expand description

Immutable portion of a Span which can be serialized and propagated.

This representation conforms to the W3C TraceContext specification.

Spans that do not have the sampled flag set in their TraceFlags will be ignored by most tracing tools.

Implementations

Create an invalid empty span context

Construct a new SpanContext

The TraceId for this span context.

The SpanId for this span context.

Returns details about the trace.

Unlike TraceState values, these are present in all traces. The current version of the specification only supports a single flag TraceFlags::SAMPLED.

Returns true if the span context has a valid (non-zero) trace_id and a valid (non-zero) span_id.

Returns true if the span context was propagated from a remote parent.

Returns true if the sampled trace flag is set.

Spans that are not sampled will be ignored by most tracing tools.

A reference to the span context’s TraceState.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Compare self to key and return true if they are equal.

Returns the argument unchanged.

Attaches the provided Context to this type, returning a WithContext wrapper. Read more

Attaches the current Context to this type, returning a WithContext wrapper. Read more

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.