我应该把我的状态机代码放在它自己的微服务中吗？

from flask import Flask, request

app = Flask(__name__)

class OrderStateMachine:
    def __init__(self):
        self.state = 'created'

    def transition(self, event):
        if self.state == 'created' and event == 'pay':
            self.state = 'paid'
        elif self.state == 'paid' and event == 'ship':
            self.state = 'shipped'
        else:
            raise ValueError(f"Invalid state transition from {self.state} with event {event}")

order_sm = OrderStateMachine()

@app.route('/order', methods=['POST'])
def handle_order():
    data = request.json
    event = data.get('event')
    try:
        order_sm.transition(event)
        return {'status': 'success', 'state': order_sm.state}
    except ValueError as e:
        return {'status': 'error', 'message': str(e)}, 400

if __name__ == '__main__':
    app.run(debug=True)