74 lines
2.7 KiB
Python
74 lines
2.7 KiB
Python
from typing import TYPE_CHECKING
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from multiaddr import Multiaddr
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import trio
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from libp2p.network.connection.net_connection_interface import INetConn
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from libp2p.network.network_interface import INetwork
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from libp2p.network.notifee_interface import INotifee
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from libp2p.network.stream.net_stream_interface import INetStream
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if TYPE_CHECKING:
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from libp2p.peer.id import ID # noqa: F401
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class PubsubNotifee(INotifee):
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initiator_peers_queue: "trio.MemorySendChannel[ID]"
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dead_peers_queue: "trio.MemorySendChannel[ID]"
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def __init__(
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self,
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initiator_peers_queue: "trio.MemorySendChannel[ID]",
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dead_peers_queue: "trio.MemorySendChannel[ID]",
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) -> None:
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"""
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:param initiator_peers_queue: queue to add new peers to so that pubsub
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can process new peers after we connect to them
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:param dead_peers_queue: queue to add dead peers to so that pubsub
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can process dead peers after we disconnect from each other
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"""
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self.initiator_peers_queue = initiator_peers_queue
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self.dead_peers_queue = dead_peers_queue
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async def opened_stream(self, network: INetwork, stream: INetStream) -> None:
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await trio.lowlevel.checkpoint()
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async def closed_stream(self, network: INetwork, stream: INetStream) -> None:
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await trio.lowlevel.checkpoint()
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async def connected(self, network: INetwork, conn: INetConn) -> None:
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"""
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Add peer_id to initiator_peers_queue, so that this peer_id can be used
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to create a stream and we only want to have one pubsub stream with each
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peer.
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:param network: network the connection was opened on
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:param conn: connection that was opened
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"""
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try:
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await self.initiator_peers_queue.send(conn.muxed_conn.peer_id)
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except trio.BrokenResourceError:
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# The receive channel is closed by Pubsub. We should do nothing here.
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pass
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async def disconnected(self, network: INetwork, conn: INetConn) -> None:
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"""
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Add peer_id to dead_peers_queue, so that pubsub and its router can
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remove this peer_id and close the stream inbetween.
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:param network: network the connection was opened on
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:param conn: connection that was opened
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"""
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try:
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await self.dead_peers_queue.send(conn.muxed_conn.peer_id)
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except trio.BrokenResourceError:
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# The receive channel is closed by Pubsub. We should do nothing here.
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pass
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async def listen(self, network: INetwork, multiaddr: Multiaddr) -> None:
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await trio.lowlevel.checkpoint()
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async def listen_close(self, network: INetwork, multiaddr: Multiaddr) -> None:
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await trio.lowlevel.checkpoint()
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