updated app.py

This commit is contained in:
2020-05-08 22:05:49 +02:00
parent 77e915c63e
commit 7ce88f1a74
3 changed files with 20 additions and 67 deletions

80
app.py
View File

@@ -1,14 +1,11 @@
#!/usr/bin/env python3
import sentry_sdk
import time
import requests
import requests.exceptions
import os
import json
import logging
import socket
from redis_super_storage import RedisSuperStorage
from communicators import ConsumerCommunicator, ProducerCommunicator
"""
Scheduler
@@ -22,74 +19,27 @@ __version__text__ = "1"
sentry_sdk.init("https://0a106e104e114bc9a3fa47f9cb0db2f4@sentry.kmlabz.com/10")
class Scheduler:
def __init__(self):
pass
def request_first_sync(self, ip_list, consumer_list_redis):
temp_dict = {}
for ip in ip_list:
try:
# request synchronization
response = requests.post(f"http://{ip}/sync", json={'uuid': os.environ['LOCAL_UUID']}, timeout=5)
except (requests.exceptions.ConnectionError, requests.exceptions.Timeout) as e:
logging.error(f"Error while syncing to {ip}: {str(e)}")
continue
if response.status_code == 200:
temp_dict[response.json()['uuid']] = {'ip': ip}
consumer_list_redis.update(temp_dict)
self.r.set('consumer_list', json.dumps(consumer_list_redis).encode('utf-8'))
logging.debug('Update redis consumers ip list from first answers: Done')
def request_sync(self, consumer_list_redis):
def test_ip_change(self, host_name):
old_ip = self.r.get('current_ip')
if old_ip:
old_ip = old_ip.decode('utf-8')
current_ip = socket.gethostbyname(host_name)
if not old_ip: # Not set yet. I this case no update required
self.r.set('current_ip', current_ip.encode('utf-8'))
logging.debug(f"Previous info about the ip address could not be found! Current: {current_ip}")
elif old_ip != current_ip:
logging.info(f'IP changed: {old_ip} -> {current_ip} Pushing updates...')
# pushing updates...
keys = self.r.keys('producer_*')
logging.debug(f'Pushing update to the following producers: ' + ', '.join(k.decode('utf-8') for k in keys))
for key in keys:
ip = self.r.get(key)
if ip:
ip = ip.decode('utf-8')
else:
continue
else:
logging.debug(f'IP unchanged: {current_ip}')
logging.debug('Waiting for next turn')
time.sleep(os.environ.get("RUN_INTERVAL", 30))
def get_initial_ip_list():
ip_list = os.environ['INITIAL_SERVERS'].split(',')
logging.debug('Initial ip list' + ", ".join(ip_list))
return ip_list
def main():
# set logging preferences
logging.basicConfig(filename='', level=logging.DEBUG)
redis_storage = RedisSuperStorage(os.environ.get('REDIS_URL', "redis://localhost:6379/0"))
scheduler = Scheduler()
redis_storage = RedisSuperStorage(os.environ.get('REDIS_URL', "redis://localhost:6379/0"), 5)
consumer_communicator = ConsumerCommunicator(redis_storage)
producer_communicator = ProducerCommunicator(redis_storage)
for ip in get_initial_ip_list():
consumer_communicator.targeted_snyc(ip)
while True:
logging.debug("Doing a sync")
consumer_communicator.sync_all()
time.sleep(os.environ.get("RUN_INTERVAL", 30))
if __name__ == "__main__":