Deploying a service to store sensor data in a MySQL database

For this scenario, we need to deploy a service to store data in the previously deployed MySQL. We are going to call this metrics. The metrics service contains the following code:

from flask import Flask, request
import mysql.connector
import os
 
app = Flask(__name__)
 
@app.route('/')
def hello_world():
    return 'It works'
 
def insert(data):
    conn = mysql.connector.connect(
     host=os.environ['HOST'],
     user=os.environ['MYSQL_USER'],
     password=os.environ['MYSQL_PASSWORD'],
     database=os.environ['MYSQL_DATABASE']
    )
    cursor = conn.cursor()
    sql = "INSERT INTO metric "+\
          ...