Tapper v0.3.1 Tapper.Tracer.Trace.Convert View Source
Converts Trace to Protocol spans.
Link to this section Summary
Functions
calculate span duration
convert an internal span to a protocol span, setting duration
convert an internal trace to a list of protocol spans
Link to this section Functions
Link to this function
span_duration(span_info, trace)
View Source
span_duration(span :: Tapper.Tracer.Trace.SpanInfo.t, trace :: Tapper.Tracer.Trace.t) :: nil | pos_integer
calculate span duration.
Handles special cases of:
- shared spans, for which we force a
nil
duration (http://zipkin.io/pages/instrumenting.html#timestamps-and-duration) - spans which were never formally closed, which get the trace’s
end_timestamp
- calculated durations < 1 microsecond, which we round up to 1 microsecond
convert an internal span to a protocol span, setting duration
Link to this function
to_protocol_spans(trace)
View Source
to_protocol_spans(Tapper.Tracer.Trace.t) :: [%Tapper.Protocol.Span{annotations: term, binary_annotations: term, debug: term, duration: term, id: term, name: term, parent_id: term, timestamp: term, trace_id: term}]
convert an internal trace to a list of protocol spans