phil/Dockerfiles/forContainerNet/gateway/bootstrap_client.py

#!/usr/bin/python
#coding: utf-8
import os
import subprocess
import requests
from time import sleep


BOOTSTRAP_SERVER_ADDRESS = '10.10.10.10:5555'

def retrieve_config():
    my_json_config = {"verdict":"oops"}
    my_ip = str(subprocess.check_output("echo $MY_IP", shell=True)).rstrip()
    print("MY_IP : %s"%(my_ip))
    while my_json_config["verdict"] != "yes":
        try:
            resp = requests.get("http://%s/getmyconfig/%s"%(BOOTSTRAP_SERVER_ADDRESS, my_ip), timeout=2)
        except:
            print("Unable to join the bootstrap server")
        try:
            my_json_config = resp.json()
            print("Extracted configs [succ] : %s"%(my_json_config))
        except:
            print("Unable to extract configs from bootstrap server's answer")
            print("Extracted configs [fail] : %s"%(my_json_config))
        print("request url : ==>%s<=="%("http://%s/getmyconfig/%s"%(BOOTSTRAP_SERVER_ADDRESS, my_ip)))
        if "verdict" in my_json_config and my_json_config["verdict"] == "yes":
            my_config = config_json_to_string(my_json_config)
            subprocess.check_output("node /mydir/*.js %s"%(my_config), shell=True)
        else:
            my_json_config = {"verdict":"oops"}
        sleep(3)

def config_json_to_string(json_config):
    config = ""
    if "local_ip" in json_config:
        config += "--local_ip "+json_config["local_ip"]+" "
    if "local_port" in json_config:
        config += "--local_port "+str(json_config["local_port"])+" "
    if "local_name" in json_config:
        config += "--local_name "+json_config["local_name"]+" "
    if "remote_ip" in json_config:
        config += "--remote_ip "+json_config["remote_ip"]+" "
    if "remote_port" in json_config:
        config += "--remote_port "+str(json_config["remote_port"])+" "
    if "remote_name" in json_config:
        config += "--remote_name "+json_config["remote_name"]+" "
    if "send_period" in json_config:
        config += "--send_period "+str(json_config["send_period"])+" "
    return config.strip()

retrieve_config()