pub struct Tracer { /* private fields */ }
Expand description
Tracer
implementation to create and manage spans
Implementations
sourceimpl Tracer
impl Tracer
sourcepub fn provider(&self) -> Option<TracerProvider>
pub fn provider(&self) -> Option<TracerProvider>
TracerProvider associated with this tracer.
sourcepub fn instrumentation_library(&self) -> &InstrumentationLibrary
pub fn instrumentation_library(&self) -> &InstrumentationLibrary
instrumentation library information of this tracer.
Trait Implementations
sourceimpl Tracer for Tracer
impl Tracer for Tracer
sourcefn invalid(&self) -> Self::Span
fn invalid(&self) -> Self::Span
Returns a span with an inactive SpanContext
. Used by functions that
need to return a default span like get_active_span
if no span is present.
sourcefn start_with_context<T>(&self, name: T, cx: Context) -> Self::Spanwhere
T: Into<Cow<'static, str>>,
fn start_with_context<T>(&self, name: T, cx: Context) -> Self::Spanwhere
T: Into<Cow<'static, str>>,
Starts a new Span
with a given context.
Each span has zero or one parent spans and zero or more child spans, which represent causally related operations. A tree of related spans comprises a trace. A span is said to be a root span if it does not have a parent. Each trace includes a single root span, which is the shared ancestor of all other spans in the trace.
sourcefn span_builder<T>(&self, name: T) -> SpanBuilderwhere
T: Into<Cow<'static, str>>,
fn span_builder<T>(&self, name: T) -> SpanBuilderwhere
T: Into<Cow<'static, str>>,
Creates a span builder
An ergonomic way for attributes to be configured before the Span
is started.
sourcefn build(&self, builder: SpanBuilder) -> Self::Span
fn build(&self, builder: SpanBuilder) -> Self::Span
Starts a span from a SpanBuilder
.
Each span has zero or one parent spans and zero or more child spans, which represent causally related operations. A tree of related spans comprises a trace. A span is said to be a root span if it does not have a parent. Each trace includes a single root span, which is the shared ancestor of all other spans in the trace.