Struct holochain_tracing::SpanContext

pub struct SpanContext(pub SpanContext);

An OpenTracing SpanContext is used to send span info across a process boundary. This is a simple wrapper around that, again with some helper functions.

Methods

impl HSpanContext

pub fn follower<S: Into<Cow<'static, str>>>(
    &self,
    tracer: &Tracer,
    operation_name: S
) -> HSpan

Create a follower RjSpan from this SpanContext NB: there is intentionally no method to create a child span from a context, since it's assumed that all inter-process points of a trace are async and the parent span will have ended before this one does

pub fn follower_<'a, N: Into<Cow<'static, str>>, F>(
    &'a self,
    tracer: &Tracer,
    operation_name: N,
    f: F
) -> HSpan where
    F: FnOnce(StartSpanOptions<BoxSampler<SpanContextState>, SpanContextState>) -> RjSpan, 

pub fn encode(&self) -> Result<EncodedSpanContext>

Serialize to binary format for packing into a IPC message

pub fn decode(enc: &EncodedSpanContext) -> Result<Self>

Deserialize from binary format

pub fn wrap<T>(self, data: T) -> SpanWrap<T>

Wrap this context in a SpanWrap along with some user data

Trait Implementations

impl Clone for HSpanContext

fn clone(&self) -> HSpanContext

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for HSpanContext

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

Formats the value using the given formatter.