Tapper v0.2.0 Tapper.Tracer.Server

config - worker config from Tapper.Tracer.Supervisor’s worker spec.
trace_init - trace parameters i.e. {trace_id, span_id, parent_span_id, sample, debug}
pid - pid of process that called Tapper.start/1 or Tapper.join/6.
timestamp (Tapper.Timestamp.t) - timestamp of trace receive/start event.
opts - options passed to start or join, see below.

Options

name (String) - name of the span.
annotations - a list of annotations, specified by Tapper.Tracer.annotation_delta/2 etc.
type (:client or :server) - determines whether the first annotation should be cs (:client) or sr (:server).
endpoint (Tapper.Endpoint) - sets the endpoint for the initial cr or sr annotation, defaults to one derived from Tapper configuration (see Tapper.Application).
remote (Tapper.Endpoint) - an endpoint to set as the sa (:client) or ca (:server) binary annotation.
ttl (integer, ms) - set the no-activity time-out for this trace in milliseconds; defaults to 30,000 ms.
reporter (module atom or function) - override the configured reporter for this trace; useful for testing.

initial_span_info(span_id, parent_id, timestamp, endpoint, opts)

prepare the SpanInfo of the initial span in this Tracer

report_trace(trace)

convert trace to protocol spans, and invoke reporter module or function.

start_link(config, arg, pid, timestamp, opts)

Starts a Tracer, registering a name derived from the Tapper.Id.

config - worker config from Tapper.Tracer.Supervisor worker spec.
trace_init - trace parameters (trace_id, span_id, etc.)
pid - pid of process that called Tapper.start/1 or Tapper.join/6.
timestamp (Tapper.Timestamp.t) - timestamp of trace receive/start event.
opts - options which were passed to start or join, see Tapper.Tracer.Server.init/1.

NB called by Tapper.Tracer.Supervisor when starting a trace with start_tracer/2.