opentracing instrumentation for flask_restplus and flask_sqlalchemy

example.py

from flask import Flask
from flask_restplus import Api, Resource
from flask_sqlalchemy import SQLAlchemy
from flask_opentracing import FlaskTracing
from jaeger_client import Config
from opentracing_instrumentation import get_current_span
from opentracing_instrumentation.client_hooks import install_all_patches
import requests
import sqlalchemy_opentracing

install_all_patches()
c = Config(config={"sampler":{"type":"const","param":1},"logging":True},service_name="test6",validate=True)
def initialize_tracer():
	return c.initialize_tracer()

app=Flask(__name__)
tr = FlaskTracing(initialize_tracer, True, app)
db = SQLAlchemy(app)
api = Api(app)

class dA(db.Model):
	__tablename__ = "a"
	id = db.Column(db.String(36), primary_key=True)


@api.route("/a")
class A(Resource):
	def get(self):
		assert requests.get("http://example.org").ok
		sqlalchemy_opentracing.set_parent_span(db.session, get_current_span())
		return dA.query.all()

db.create_all()
app.run(host="0.0.0.0")