main.py

#!/usr/bin/python
# -*- coding: utf-8 -*-
import logging
import time
from jaeger_client import Config
from opentracing.propagation import Format

if __name__ == "__main__":
    log_level = logging.DEBUG
    logging.getLogger('').handlers = []
    logging.basicConfig(format='%(asctime)s %(message)s', level=log_level)

    config = Config(
        config={ # usually read from some yaml config
            'sampler': {
                'type': 'const',
                'param': 1,
            },
            'logging': True,
        },
        service_name='ws',
    )
    # this call also sets opentracing.tracer
    tracer = config.initialize_tracer()

    with tracer.start_span('TestSpan') as span:
        span.log_event('test message', payload={'life': 42})

        headers = {}
        tracer.inject(span, Format.HTTP_HEADERS, headers)
        print(headers)

        with tracer.start_span('ChildSpan', child_of=span) as child_span:
            span.log_event('down below')

            headers = {}
            tracer.inject(child_span, Format.HTTP_HEADERS, headers)
            print(headers)

            with tracer.start_span('ChildSpan', child_of=child_span) as last_child:
                span.log_event('down below')

                headers = {}
                tracer.inject(last_child, Format.HTTP_HEADERS, headers)
                print(headers)

    time.sleep(2)   # yield to IOLoop to flush the spans - https://github.com/jaegertracing/jaeger-client-python/issues/50
    tracer.close()  # flush any buffered spans