6852a9aa5e
Change in one relay reflects in others. The RelayManager takes care of updating each relay individually.
79 lines
2.6 KiB
Python
79 lines
2.6 KiB
Python
import json
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import threading
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from .event import Event
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from .filter import Filters
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from .message_pool import MessagePool
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from .message_type import ClientMessageType
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from .relay import Relay, RelayPolicy
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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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def add_relay(
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self, url: str, read: bool = True, write: bool = True, subscriptions={}
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):
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policy = RelayPolicy(read, write)
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relay = Relay(url, policy, self.message_pool, subscriptions.copy())
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self.relays[url] = relay
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def remove_relay(self, url: str):
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self.relays[url].close()
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self.relays.pop(url)
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self.threads[url].join(timeout=1)
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self.threads.pop(url)
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def add_subscription(self, id: str, filters: 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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for relay in self.relays.values():
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relay.close_subscription(id)
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def open_connections(self, ssl_options: dict = None, proxy: dict = None):
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for relay in self.relays.values():
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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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args=(lambda: relay.shutdown,),
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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 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 publish_event(self, event: Event):
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"""Verifies that the Event is publishable before submitting it to relays"""
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if event.signature is None:
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raise RelayException(f"Could not publish {event.id}: must be signed")
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if not event.verify():
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raise RelayException(
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f"Could not publish {event.id}: failed to verify signature {event.signature}"
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)
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self.publish_message(event.to_message())
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