How to use the basictracer.SpanRecorder function in basictracer

self.cb.get("dummy",ttl=remaining_time)
            except:
                pass

    def tearDown(self):
        super(ConnectionTestCaseBase, self).tearDown()
        if hasattr(self, '_implDtorHook'):
            self._implDtorHook()
        else:
            try:
                self.checkCbRefcount()
            finally:
                del self.cb


class LogRecorder(SpanRecorder):
    def record_span(self, span):
        if os.environ.get("PYCBC_LOG_RECORDED_SPANS"):
            logging.info("recording span: "+str(span.__dict__))


def basic_tracer():
    return BasicTracer(LogRecorder())


try:
    from opentracing_pyzipkin.tracer import Tracer
    import requests

    def http_transport(encoded_span):
        # The collector expects a thrift-encoded list of spans.
        import logging

import event
import itertools
from spanid import SpanID, Annotation
from basictracer import BasicTracer, SpanRecorder

def create_new_tracer(collector, sampler=None):
    """create_new_tracer creates a new appdash opentracing tracer using an Appdash collector.
    """
    return BasicTracer(recorder=AppdashRecorder(collector), sampler=sampler)

class AppdashRecorder(SpanRecorder):
    """AppdashRecorder collects and records spans to a remote Appdash collector.
    """
    def __init__(self, collector):
        self._collector = collector

    def record_span(self, span):
        if not span.context.sampled:
            return
        span_id = SpanID()
        span_id.trace = span.context.trace_id
        span_id.span = span.context.span_id
        if span.parent_id is not None:
            span_id.parent = span.parent_id

        self._collector.collect(span_id,
                *event.MarshalEvent(event.SpanNameEvent(span.operation_name)))