py-libp2p/libp2p/host/host_interface.py
2019-11-06 11:41:28 -08:00

89 lines
2.5 KiB
Python

from abc import ABC, abstractmethod
from typing import Any, List, Sequence
import multiaddr
from libp2p.crypto.keys import PublicKey
from libp2p.network.network_interface import INetwork
from libp2p.network.stream.net_stream_interface import INetStream
from libp2p.peer.id import ID
from libp2p.peer.peerinfo import PeerInfo
from libp2p.typing import StreamHandlerFn, TProtocol
class IHost(ABC):
@abstractmethod
def get_id(self) -> ID:
"""
:return: peer_id of host
"""
@abstractmethod
def get_public_key(self) -> PublicKey:
"""
:return: the public key belonging to the peer
"""
@abstractmethod
def get_network(self) -> INetwork:
"""
:return: network instance of host
"""
# FIXME: Replace with correct return type
@abstractmethod
def get_mux(self) -> Any:
"""
:return: mux instance of host
"""
@abstractmethod
def get_addrs(self) -> List[multiaddr.Multiaddr]:
"""
:return: all the multiaddr addresses this host is listening to
"""
@abstractmethod
def set_stream_handler(
self, protocol_id: TProtocol, stream_handler: StreamHandlerFn
) -> None:
"""
set stream handler for host.
:param protocol_id: protocol id used on stream
:param stream_handler: a stream handler function
"""
# protocol_id can be a list of protocol_ids
# stream will decide which protocol_id to run on
@abstractmethod
async def new_stream(
self, peer_id: ID, protocol_ids: Sequence[TProtocol]
) -> INetStream:
"""
:param peer_id: peer_id that host is connecting
:param protocol_ids: available protocol ids to use for stream
:return: stream: new stream created
"""
@abstractmethod
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
opened, or an error is returned.
:param peer_info: peer_info of the peer we want to connect to
:type peer_info: peer.peerinfo.PeerInfo
"""
@abstractmethod
async def disconnect(self, peer_id: ID) -> None:
pass
@abstractmethod
async def close(self) -> None:
pass