Onionr/static-data/default-plugins/unixtransport/unixbootstrap.py

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import shelve
from threading import Thread
from time import sleep
import os
import dbm
import traceback
from typing import Callable
from gossip.server import gossip_server_socket_file
from gossip.peer import Peer
from gossip.peerset import gossip_peer_set
from utils.identifyhome import identify_home
import logger
import config
from unixpeer import UnixPeer
from unixfilepaths import peer_database_file
bootstrap_file = f'{os.path.dirname(os.path.realpath(__file__))}/bootstrap.txt'
def load_existing_peers(callback: Callable):
"""Load peers saved to disk"""
peer_address: str = ''
# the peers here are saved on clean shutdown
with shelve.open(peer_database_file, 'r') as unix_peer_db:
peer_address: str = unix_peer_db.nextkey()
while peer_address:
Thread(
target=callback,
args=[unix_peer_db[peer_address]],
name=f'{peer_address} connection attempt',
daemon=True).start()
def on_bootstrap(api, data=None):
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callback_func = data['callback']
try:
load_existing_peers(callback_func)
except dbm.error:
try:
with open(bootstrap_file, 'r') as bootstrap_file_obj:
bootstrap_nodes = set(bootstrap_file_obj.read().split(','))
except FileNotFoundError:
bootstrap_nodes = set()
except Exception as e:
logger.warn(traceback.format_exc(), terminal=True)
return
else:
return
while not os.path.exists(gossip_server_socket_file):
sleep(0.1)
for address in bootstrap_nodes:
if address == gossip_server_socket_file or not address:
continue
if not os.path.exists(address):
continue
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# Tell the gossip logic that this peer is ready to connect
# it will add it to data['peer_set'] if it responds to ping
Thread(
target=callback_func,
args=[UnixPeer(address)],
daemon=True).start()
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sleep(1)
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