client.py

import requests
import sys
import time
from opentracing_instrumentation.request_context import get_current_span, span_in_context
from opentracing.ext import tags
from opentracing.propagation import Format
from opentracing_instrumentation.client_hooks import install_all_patches
from jaeger_client import Config


install_all_patches()

config = Config(config={'sampler':{'type': 'const','param': 1},'logging': True},service_name="jaeger_opentracing_example2")
tracer = config.initialize_tracer()

url = 'http://localhost:4999/log2'

span = tracer.start_span('TestSpan')

span.set_tag(tags.HTTP_METHOD, 'GET') 
span.set_tag(tags.HTTP_URL, url)
span.set_tag(tags.SPAN_KIND, tags.SPAN_KIND_RPC_CLIENT) 
headers = {}
tracer.inject(span, Format.HTTP_HEADERS, headers)

r = requests.get(url)

server.py

import opentracing
import logging
import time
from jaeger_client import Config
from flask import Flask
from flask_opentracing import FlaskTracer
from opentracing_instrumentation.client_hooks import install_all_patches
import requests
from opentracing.propagation import Format
from flask import Flask, request

  
install_all_patches()

if __name__ == '__main__':
        app = Flask(__name__)
        
        #tracer = init_tracer('formatter') import from lib.tracer ???

        log_level = logging.DEBUG
        logging.getLogger('').handlers = []
        logging.basicConfig(format='%(asctime)s %(message)s', level=log_level)
        config = Config(config={'sampler':{'type': 'const','param': 1},'logging': True},service_name="jaeger_opentracing_example2")
        ls_tracer = config.initialize_tracer()
        tracer = FlaskTracer(ls_tracer)
        
        @app.route('/log2')
        @tracer.trace()
        def log_something2():

                span_ctx = ls_tracer.extract(Format.HTTP_HEADERS, request.headers)
                span_tags = {tags.SPAN_KIND: tags.SPAN_KIND_RPC_SERVER}
           
                child_span = tracer.start_span("python webserver internal span of log2", child_of=span_ctx, tags=span_tags)
                child_span.finish()
                return "log2"
        
        
        app.run(debug=True, port=4999)