115 lines
3.7 KiB
Python
115 lines
3.7 KiB
Python
from typing import (
|
|
Any,
|
|
Awaitable,
|
|
Callable,
|
|
List,
|
|
Sequence,
|
|
)
|
|
|
|
import multiaddr
|
|
|
|
from libp2p.network.network_interface import INetwork
|
|
from libp2p.peer.id import ID
|
|
from libp2p.peer.peerinfo import PeerInfo
|
|
from libp2p.peer.peerstore_interface import IPeerStore
|
|
|
|
from libp2p.network.stream.net_stream_interface import INetStream
|
|
from libp2p.routing.kademlia.kademlia_peer_router import KadmeliaPeerRouter
|
|
|
|
from .host_interface import IHost
|
|
|
|
# Upon host creation, host takes in options,
|
|
# including the list of addresses on which to listen.
|
|
# Host then parses these options and delegates to its Network instance,
|
|
# telling it to listen on the given listen addresses.
|
|
|
|
|
|
StreamHandlerFn = Callable[[INetStream], Awaitable[None]]
|
|
|
|
|
|
class BasicHost(IHost):
|
|
|
|
_network: INetwork
|
|
router: KadmeliaPeerRouter
|
|
peerstore: IPeerStore
|
|
|
|
# default options constructor
|
|
def __init__(self, network: INetwork, router: KadmeliaPeerRouter = None) -> None:
|
|
self._network = network
|
|
self._router = router
|
|
self.peerstore = self._network.peerstore
|
|
|
|
def get_id(self) -> ID:
|
|
"""
|
|
:return: peer_id of host
|
|
"""
|
|
return self._network.get_peer_id()
|
|
|
|
def get_network(self) -> INetwork:
|
|
"""
|
|
:return: network instance of host
|
|
"""
|
|
return self._network
|
|
|
|
def get_peerstore(self) -> IPeerStore:
|
|
"""
|
|
:return: peerstore of the host (same one as in its network instance)
|
|
"""
|
|
return self.peerstore
|
|
|
|
# FIXME: Replace with correct return type
|
|
def get_mux(self) -> Any:
|
|
"""
|
|
:return: mux instance of host
|
|
"""
|
|
|
|
def get_addrs(self) -> List[multiaddr.Multiaddr]:
|
|
"""
|
|
:return: all the multiaddr addresses this host is listening too
|
|
"""
|
|
p2p_part = multiaddr.Multiaddr('/p2p/{}'.format(self.get_id().pretty()))
|
|
|
|
addrs: List[multiaddr.Multiaddr] = []
|
|
for transport in self._network.listeners.values():
|
|
for addr in transport.get_addrs():
|
|
addrs.append(addr.encapsulate(p2p_part))
|
|
return addrs
|
|
|
|
def set_stream_handler(self, protocol_id: str, stream_handler: StreamHandlerFn) -> bool:
|
|
"""
|
|
set stream handler for host
|
|
:param protocol_id: protocol id used on stream
|
|
:param stream_handler: a stream handler function
|
|
:return: true if successful
|
|
"""
|
|
return self._network.set_stream_handler(protocol_id, stream_handler)
|
|
|
|
# protocol_id can be a list of protocol_ids
|
|
# stream will decide which protocol_id to run on
|
|
async def new_stream(self, peer_id: ID, protocol_ids: Sequence[str]) -> INetStream:
|
|
"""
|
|
:param peer_id: peer_id that host is connecting
|
|
:param protocol_id: protocol id that stream runs on
|
|
:return: stream: new stream created
|
|
"""
|
|
return await self._network.new_stream(peer_id, protocol_ids)
|
|
|
|
async def connect(self, peer_info: PeerInfo) -> None:
|
|
"""
|
|
connect ensures there is a connection between this host and the peer with
|
|
given peer_info.peer_id. connect will absorb the addresses in peer_info into its internal
|
|
peerstore. If there is not an active connection, connect will issue a
|
|
dial, and block until a connection is open, or an error is
|
|
returned.
|
|
|
|
:param peer_info: peer_info of the host we want to connect to
|
|
:type peer_info: peer.peerinfo.PeerInfo
|
|
"""
|
|
self.peerstore.add_addrs(peer_info.peer_id, peer_info.addrs, 10)
|
|
|
|
# there is already a connection to this peer
|
|
if peer_info.peer_id in self._network.connections:
|
|
return
|
|
|
|
await self._network.dial_peer(peer_info.peer_id)
|