100 lines
3.3 KiB
Python
100 lines
3.3 KiB
Python
from typing import Any, Dict, List, Optional, Sequence
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from multiaddr import Multiaddr
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from .id import ID
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from .peerdata import PeerData, PeerDataError
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from .peerinfo import PeerInfo
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from .peerstore_interface import IPeerStore
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class PeerStore(IPeerStore):
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peer_map: Dict[ID, PeerData]
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def __init__(self) -> None:
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IPeerStore.__init__(self)
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self.peer_map = {}
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def __create_or_get_peer(self, peer_id: ID) -> PeerData:
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"""
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Returns the peer data for peer_id or creates a new peer data (and
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stores it in peer_map) if peer data for peer_id does not yet exist.
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:param peer_id: peer ID
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:return: peer data
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"""
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if peer_id in self.peer_map:
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return self.peer_map[peer_id]
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data = PeerData()
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self.peer_map[peer_id] = data
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return self.peer_map[peer_id]
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def peer_info(self, peer_id: ID) -> Optional[PeerInfo]:
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if peer_id in self.peer_map:
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peer_data = self.peer_map[peer_id]
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return PeerInfo(peer_id, peer_data.addrs)
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return None
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def get_protocols(self, peer_id: ID) -> List[str]:
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if peer_id in self.peer_map:
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return self.peer_map[peer_id].get_protocols()
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raise PeerStoreError("peer ID not found")
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def add_protocols(self, peer_id: ID, protocols: Sequence[str]) -> None:
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peer = self.__create_or_get_peer(peer_id)
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peer.add_protocols(list(protocols))
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def set_protocols(self, peer_id: ID, protocols: Sequence[str]) -> None:
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peer = self.__create_or_get_peer(peer_id)
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peer.set_protocols(list(protocols))
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def peer_ids(self) -> List[ID]:
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return list(self.peer_map.keys())
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def get(self, peer_id: ID, key: str) -> Any:
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if peer_id in self.peer_map:
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try:
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val = self.peer_map[peer_id].get_metadata(key)
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except PeerDataError as error:
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raise PeerStoreError(error)
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return val
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raise PeerStoreError("peer ID not found")
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def put(self, peer_id: ID, key: str, val: Any) -> None:
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# <<?>>
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# This can output an error, not sure what the possible errors are
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peer = self.__create_or_get_peer(peer_id)
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peer.put_metadata(key, val)
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def add_addr(self, peer_id: ID, addr: Multiaddr, ttl: int) -> None:
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self.add_addrs(peer_id, [addr], ttl)
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def add_addrs(self, peer_id: ID, addrs: Sequence[Multiaddr], ttl: int) -> None:
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# Ignore ttl for now
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peer = self.__create_or_get_peer(peer_id)
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peer.add_addrs(list(addrs))
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def addrs(self, peer_id: ID) -> List[Multiaddr]:
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if peer_id in self.peer_map:
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return self.peer_map[peer_id].get_addrs()
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raise PeerStoreError("peer ID not found")
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def clear_addrs(self, peer_id: ID) -> None:
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# Only clear addresses if the peer is in peer map
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if peer_id in self.peer_map:
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self.peer_map[peer_id].clear_addrs()
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def peers_with_addrs(self) -> List[ID]:
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# Add all peers with addrs at least 1 to output
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output: List[ID] = []
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for peer_id in self.peer_map:
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if len(self.peer_map[peer_id].get_addrs()) >= 1:
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output.append(peer_id)
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return output
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class PeerStoreError(KeyError):
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"""Raised when peer ID is not found in peer store."""
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