def info_from_p2p_addr(addr: Multiaddr) -> PeerInfo:
if addr is None:
raise InvalidAddrError("`addr` should not be `None`")
parts = addr.split()
if not parts:
raise InvalidAddrError(
f"`parts`={parts} should at least have a protocol `P_P2P`")
p2p_part = parts[-1]
last_protocol_code = p2p_part.protocols()[0].code
if last_protocol_code != 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: str = p2p_part.value_for_protocol(protocols.P_P2P)
peer_id = PeerID.from_base58(peer_id_str)
# we might have received just an / p2p part, which means there's no addr.
if len(parts) > 1:
addr = Multiaddr.join(*parts[:-1])
return PeerInfo(peer_id, [addr])
def _derive_port(maddr: Multiaddr, orchestration_profile: str) -> Multiaddr:
offset = ord(orchestration_profile[:1]) - ord("a")
port = int(maddr.value_for_protocol("tcp")) + offset
return Multiaddr.join(f"/ip4/{maddr.value_for_protocol('ip4')}",
f"/tcp/{port}")
