mirror of
https://github.com/Chia-Network/chia-blockchain.git
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3b084a165b
* configure isort to add the future annotations import * apply the new isort setting * remove type ignores for new mypy (#13539) https://pypi.org/project/mypy/0.981/ * another
151 lines
5.3 KiB
Python
151 lines
5.3 KiB
Python
from __future__ import annotations
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import math
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import time
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from dataclasses import dataclass
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from chia.util.ints import uint32, uint64
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from chia.util.streamable import Streamable, streamable
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@streamable
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@dataclass(frozen=True)
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class PeerRecord(Streamable):
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peer_id: str
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ip_address: str
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port: uint32
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connected: bool
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last_try_timestamp: uint64
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try_count: uint32
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connected_timestamp: uint64
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added_timestamp: uint64
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best_timestamp: uint64
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version: str
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handshake_time: uint64
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tls_version: str
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def update_version(self, version, now):
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if version != "undefined":
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object.__setattr__(self, "version", version)
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object.__setattr__(self, "handshake_time", uint64(now))
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class PeerStat:
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weight: float
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count: float
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reliability: float
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def __init__(self, weight, count, reliability):
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self.weight = weight
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self.count = count
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self.reliability = reliability
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def update(self, is_reachable: bool, age: int, tau: int):
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f = math.exp(-age / tau)
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self.reliability = self.reliability * f + (1.0 - f if is_reachable else 0.0)
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self.count = self.count * f + 1.0
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self.weight = self.weight * f + 1.0 - f
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class PeerReliability:
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peer_id: str
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ignore_till: int
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ban_till: int
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stat_2h: PeerStat
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stat_8h: PeerStat
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stat_1d: PeerStat
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stat_1w: PeerStat
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stat_1m: PeerStat
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tries: int
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successes: int
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def __init__(
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self,
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peer_id: str,
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ignore_till: int = 0,
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ban_till: int = 0,
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stat_2h_weight: float = 0.0,
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stat_2h_count: float = 0.0,
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stat_2h_reliability: float = 0.0,
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stat_8h_weight: float = 0.0,
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stat_8h_count: float = 0.0,
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stat_8h_reliability: float = 0.0,
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stat_1d_weight: float = 0.0,
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stat_1d_count: float = 0.0,
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stat_1d_reliability: float = 0.0,
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stat_1w_weight: float = 0.0,
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stat_1w_count: float = 0.0,
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stat_1w_reliability: float = 0.0,
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stat_1m_weight: float = 0.0,
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stat_1m_count: float = 0.0,
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stat_1m_reliability: float = 0.0,
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tries: int = 0,
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successes: int = 0,
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):
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self.peer_id = peer_id
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self.ignore_till = ignore_till
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self.ban_till = ban_till
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self.stat_2h = PeerStat(stat_2h_weight, stat_2h_count, stat_2h_reliability)
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self.stat_8h = PeerStat(stat_8h_weight, stat_8h_count, stat_8h_reliability)
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self.stat_1d = PeerStat(stat_1d_weight, stat_1d_count, stat_1d_reliability)
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self.stat_1w = PeerStat(stat_1w_weight, stat_1w_count, stat_1w_reliability)
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self.stat_1m = PeerStat(stat_1m_weight, stat_1m_count, stat_1m_reliability)
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self.tries = tries
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self.successes = successes
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def is_reliable(self) -> bool:
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if self.tries > 0 and self.tries <= 3 and self.successes * 2 >= self.tries:
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return True
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if self.stat_2h.reliability > 0.85 and self.stat_2h.count > 2:
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return True
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if self.stat_8h.reliability > 0.7 and self.stat_8h.count > 4:
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return True
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if self.stat_1d.reliability > 0.55 and self.stat_1d.count > 8:
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return True
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if self.stat_1w.reliability > 0.45 and self.stat_1w.count > 16:
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return True
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if self.stat_1m.reliability > 0.35 and self.stat_1m.count > 32:
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return True
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return False
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def get_ban_time(self) -> int:
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if self.is_reliable():
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return 0
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if self.stat_1m.reliability - self.stat_1m.weight + 1 < 0.15 and self.stat_1m.count > 32:
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return 30 * 86400
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if self.stat_1w.reliability - self.stat_1w.weight + 1.0 < 0.10 and self.stat_1w.count > 16:
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return 7 * 86400
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if self.stat_1d.reliability - self.stat_1d.weight + 1.0 < 0.05 and self.stat_1d.count > 8:
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return 86400
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return 0
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def get_ignore_time(self) -> int:
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if self.is_reliable():
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return 0
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if self.stat_1m.reliability - self.stat_1m.weight + 1.0 < 0.20 and self.stat_1m.count > 2:
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return 10 * 86400
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if self.stat_1w.reliability - self.stat_1w.weight + 1.0 < 0.16 and self.stat_1w.count > 2:
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return 3 * 86400
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if self.stat_1d.reliability - self.stat_1d.weight + 1.0 < 0.12 and self.stat_1d.count > 2:
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return 8 * 3600
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if self.stat_8h.reliability - self.stat_8h.weight + 1.0 < 0.08 and self.stat_8h.count > 2:
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return 2 * 3600
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return 0
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def update(self, is_reachable: bool, age: int):
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self.stat_2h.update(is_reachable, age, 2 * 3600)
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self.stat_8h.update(is_reachable, age, 8 * 3600)
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self.stat_1d.update(is_reachable, age, 24 * 3600)
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self.stat_1w.update(is_reachable, age, 7 * 24 * 3600)
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self.stat_1m.update(is_reachable, age, 24 * 30 * 3600)
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self.tries += 1
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if is_reachable:
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self.successes += 1
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current_ignore_time = self.get_ignore_time()
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now = int(time.time())
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if current_ignore_time > 0 and (self.ignore_till == 0 or self.ignore_till < current_ignore_time + now):
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self.ignore_till = current_ignore_time + now
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current_ban_time = self.get_ban_time()
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if current_ban_time > 0 and (self.ban_till == 0 or self.ban_till < current_ban_time + now):
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self.ban_till = current_ban_time + now
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