How to integrate mitmproxy into python web framework such as flask

Question

I am a newbie on python web programming, still don't know how to integrate mitmproxy with web framework such as flask. I mean is it possible to send a request to start mitmproxy service, another request to stop it, as example below:

 app = Flask(__name__)

class MyMaster(flow.FlowMaster):
    def run(self):
        try:
            flow.FlowMaster.run(self)
        except KeyboardInterrupt:
            self.shutdown()
    @controller.handler
    def request(self, f):
        print("request", f)

    @controller.handler
    def response(self, f):
        print("response", f)

    @controller.handler
    def error(self, f):
        print("error", f)

    @controller.handler
    def log(self, l):
        print("log", l.msg)

opts = options.Options(cadir="~/.mitmproxy/", listen_port=9000)
config = ProxyConfig(opts)
state = flow.State()
server = ProxyServer(config)
m = MyMaster(opts, server, state)

@app.route("/")
def index():
    return "hello"

@app.route("/start")
def start():
    global m
    m.run()
    return 'Start!'

def stop():
    global m
    m.shutdown()

app.run(debug=True)

now I have to divide my application into two parts, the mitmproxy as service be controlled by supervisor, store the data into database, another flask app to display the data from database. actually I want to control the service from the client side.