3372c32432
- Fix examples `chat.py` and `echo.py`
- Use trio directly, instead of `trio-asyncio`
- Remove redundant code
- Change entry API `new_node` to `new_host_trio`
117 lines
3.6 KiB
Python
117 lines
3.6 KiB
Python
from typing import AsyncIterator, Sequence
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from async_generator import asynccontextmanager
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from async_service import background_trio_service
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from libp2p.crypto.keys import KeyPair
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from libp2p.crypto.rsa import create_new_key_pair
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from libp2p.host.basic_host import BasicHost
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from libp2p.host.host_interface import IHost
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from libp2p.host.routed_host import RoutedHost
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from libp2p.network.network_interface import INetwork, INetworkService
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from libp2p.network.swarm import Swarm
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from libp2p.peer.id import ID
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from libp2p.peer.peerstore import PeerStore
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from libp2p.peer.peerstore_interface import IPeerStore
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from libp2p.routing.interfaces import IPeerRouting
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from libp2p.security.insecure.transport import PLAINTEXT_PROTOCOL_ID, InsecureTransport
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import libp2p.security.secio.transport as secio
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from libp2p.stream_muxer.mplex.mplex import MPLEX_PROTOCOL_ID, Mplex
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from libp2p.transport.tcp.tcp import TCP
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from libp2p.transport.typing import TMuxerOptions, TSecurityOptions
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from libp2p.transport.upgrader import TransportUpgrader
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from libp2p.typing import TProtocol
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def generate_new_rsa_identity() -> KeyPair:
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return create_new_key_pair()
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def generate_peer_id_from(key_pair: KeyPair) -> ID:
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public_key = key_pair.public_key
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return ID.from_pubkey(public_key)
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def initialize_default_swarm(
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key_pair: KeyPair = None,
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muxer_opt: TMuxerOptions = None,
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sec_opt: TSecurityOptions = None,
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peerstore_opt: IPeerStore = None,
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) -> INetworkService:
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"""
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initialize swarm when no swarm is passed in.
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:param key_pair: optional choice of the ``KeyPair``
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:param muxer_opt: optional choice of stream muxer
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:param sec_opt: optional choice of security upgrade
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:param peerstore_opt: optional peerstore
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:return: return a default swarm instance
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"""
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if not key_pair:
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key_pair = generate_new_rsa_identity()
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id_opt = generate_peer_id_from(key_pair)
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# TODO: Parse `listen_addrs` to determine transport
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transport = TCP()
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muxer_transports_by_protocol = muxer_opt or {MPLEX_PROTOCOL_ID: Mplex}
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security_transports_by_protocol = sec_opt or {
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TProtocol(PLAINTEXT_PROTOCOL_ID): InsecureTransport(key_pair),
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TProtocol(secio.ID): secio.Transport(key_pair),
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}
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upgrader = TransportUpgrader(
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security_transports_by_protocol, muxer_transports_by_protocol
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)
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peerstore = peerstore_opt or PeerStore()
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# Store our key pair in peerstore
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peerstore.add_key_pair(id_opt, key_pair)
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return Swarm(id_opt, peerstore, upgrader, transport)
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def _new_host(swarm_opt: INetwork, disc_opt: IPeerRouting = None) -> IHost:
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"""
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create new libp2p host.
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:param swarm_opt: optional swarm
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:param disc_opt: optional discovery
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:return: return a host instance
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"""
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# TODO enable support for other host type
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# TODO routing unimplemented
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host: IHost # If not explicitly typed, MyPy raises error
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if disc_opt:
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host = RoutedHost(swarm_opt, disc_opt)
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else:
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host = BasicHost(swarm_opt)
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return host
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@asynccontextmanager
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async def new_host_trio(
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listen_addrs: Sequence[str],
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key_pair: KeyPair = None,
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swarm_opt: INetwork = None,
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muxer_opt: TMuxerOptions = None,
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sec_opt: TSecurityOptions = None,
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peerstore_opt: IPeerStore = None,
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disc_opt: IPeerRouting = None,
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) -> AsyncIterator[IHost]:
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swarm = initialize_default_swarm(
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key_pair=key_pair,
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muxer_opt=muxer_opt,
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sec_opt=sec_opt,
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peerstore_opt=peerstore_opt,
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)
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async with background_trio_service(swarm):
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await swarm.listen(*listen_addrs)
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host = _new_host(swarm_opt=swarm, disc_opt=disc_opt)
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yield host
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# TODO: Support asyncio
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