49 lines
1.4 KiB
Python
49 lines
1.4 KiB
Python
import multiaddr
|
|
|
|
from .id import id_b58_decode
|
|
from .peerdata import PeerData
|
|
|
|
|
|
class PeerInfo:
|
|
# pylint: disable=too-few-public-methods
|
|
def __init__(self, peer_id, peer_data=None):
|
|
self.peer_id = peer_id
|
|
self.addrs = peer_data.get_addrs() if peer_data else None
|
|
|
|
|
|
def info_from_p2p_addr(addr: multiaddr.Multiaddr) -> PeerInfo:
|
|
if not addr:
|
|
raise InvalidAddrError("`addr` should not be `None`")
|
|
|
|
if not isinstance(addr, multiaddr.Multiaddr):
|
|
raise InvalidAddrError(f"`addr`={addr} should be of type `Multiaddr`")
|
|
|
|
parts = addr.split()
|
|
if not parts:
|
|
raise InvalidAddrError()
|
|
|
|
p2p_part = parts[-1]
|
|
last_protocol_code = p2p_part.protocols()[0].code
|
|
if last_protocol_code != multiaddr.protocols.P_P2P:
|
|
raise InvalidAddrError(
|
|
f"The last protocol should be `P_P2P` instead of `{last_protocol_code}`"
|
|
)
|
|
|
|
# make sure the /p2p value parses as a peer.ID
|
|
peer_id_str = p2p_part.value_for_protocol(multiaddr.protocols.P_P2P)
|
|
peer_id = id_b58_decode(peer_id_str)
|
|
|
|
# we might have received just an / p2p part, which means there's no addr.
|
|
if len(parts) > 1:
|
|
addr = multiaddr.Multiaddr.join(*parts[:-1])
|
|
|
|
peer_data = PeerData()
|
|
peer_data.addrs = [addr]
|
|
peer_data.protocols = [p.code for p in addr.protocols()]
|
|
|
|
return PeerInfo(peer_id, peer_data)
|
|
|
|
|
|
class InvalidAddrError(ValueError):
|
|
pass
|