105 lines
No EOL
3.2 KiB
Python
105 lines
No EOL
3.2 KiB
Python
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import ssl
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import threading
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from loguru import logger
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from .filter import Filters
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from .message_pool import MessagePool
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from .relay import Relay, RelayPolicy
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from .subscription import Subscription
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class RelayException(Exception):
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pass
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class RelayManager:
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def __init__(self) -> None:
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self.relays: dict[str, Relay] = {}
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self.threads: dict[str, threading.Thread] = {}
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self.queue_threads: dict[str, threading.Thread] = {}
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self.message_pool = MessagePool()
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self._cached_subscriptions: dict[str, Subscription] = {}
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self._subscriptions_lock = threading.Lock()
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def add_relay(self, url: str, read: bool = True, write: bool = True) -> Relay:
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if url in list(self.relays.keys()):
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return
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with self._subscriptions_lock:
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subscriptions = self._cached_subscriptions.copy()
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policy = RelayPolicy(read, write)
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relay = Relay(url, policy, self.message_pool, subscriptions)
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self.relays[url] = relay
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self._open_connection(
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relay,
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{"cert_reqs": ssl.CERT_NONE}
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) # NOTE: This disables ssl certificate verification
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relay.publish_subscriptions()
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return relay
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def remove_relay(self, url: str):
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self.threads[url].join(timeout=1)
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self.threads.pop(url)
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self.queue_threads[url].join(timeout=1)
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self.queue_threads.pop(url)
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self.relays[url].close()
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self.relays.pop(url)
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def add_subscription(self, id: str, filters: Filters):
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with self._subscriptions_lock:
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self._cached_subscriptions[id] = Subscription(id, filters)
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for relay in self.relays.values():
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relay.add_subscription(id, filters)
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def close_subscription(self, id: str):
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with self._subscriptions_lock:
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self._cached_subscriptions.pop(id)
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for relay in self.relays.values():
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relay.close_subscription(id)
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def check_and_restart_relays(self):
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stopped_relays = [r for r in self.relays.values() if r.shutdown]
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for relay in stopped_relays:
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self._restart_relay(relay)
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def close_connections(self):
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for relay in self.relays.values():
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relay.close()
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def publish_message(self, message: str):
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for relay in self.relays.values():
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if relay.policy.should_write:
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relay.publish(message)
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def _open_connection(self, relay: Relay, ssl_options: dict = None, proxy: dict = None):
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self.threads[relay.url] = threading.Thread(
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target=relay.connect,
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args=(ssl_options, proxy),
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name=f"{relay.url}-thread",
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daemon=True,
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)
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self.threads[relay.url].start()
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self.queue_threads[relay.url] = threading.Thread(
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target=relay.queue_worker,
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name=f"{relay.url}-queue",
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daemon=True,
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)
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self.queue_threads[relay.url].start()
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def _restart_relay(self, relay: Relay):
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if relay.error_threshold_reached:
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return
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logger.info(f"Restarting connection to relay '{relay.url}'")
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self.remove_relay(relay.url)
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new_relay = self.add_relay(relay.url)
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new_relay.error_counter = relay.error_counter |