55 lines
1.6 KiB
Python
55 lines
1.6 KiB
Python
from __future__ import annotations
|
|
|
|
import os
|
|
from dataclasses import dataclass
|
|
from functools import lru_cache
|
|
|
|
|
|
SCHEMA_VERSION = "v1"
|
|
|
|
|
|
def _env_int(name: str, default: int) -> int:
|
|
try:
|
|
return int(os.getenv(name, default))
|
|
except Exception:
|
|
return default
|
|
|
|
|
|
def _env_float(name: str, default: float) -> float:
|
|
try:
|
|
return float(os.getenv(name, default))
|
|
except Exception:
|
|
return default
|
|
|
|
|
|
@dataclass(frozen=True)
|
|
class DHTConfig:
|
|
"""Runtime configuration for the decentralized storage layer."""
|
|
|
|
schema_version: str = SCHEMA_VERSION
|
|
min_receipts: int = _env_int("DHT_MIN_RECEIPTS", 5)
|
|
min_reachability_ratio: float = _env_float("DHT_MIN_REACHABILITY", 0.6)
|
|
membership_ttl: int = _env_int("DHT_MEMBERSHIP_TTL", 600)
|
|
replication_target: int = max(3, _env_int("DHT_REPLICATION_TARGET", 3))
|
|
lease_ttl: int = _env_int("DHT_LEASE_TTL", 600)
|
|
heartbeat_interval: int = _env_int("DHT_HEARTBEAT_INTERVAL", 60)
|
|
heartbeat_miss_threshold: int = _env_int("DHT_HEARTBEAT_MISS_THRESHOLD", 3)
|
|
rendezvous_base: str = os.getenv("DHT_RENDEZVOUS_HASH", "blake3")
|
|
pow_difficulty: int = _env_int("DHT_POW_DIFFICULTY", 4)
|
|
min_asn_diversity: int = _env_int("DHT_MIN_ASN", 3)
|
|
min_ip_octet_diversity: int = _env_int("DHT_MIN_IP_OCTETS", 3)
|
|
window_size: int = _env_int("DHT_METRIC_WINDOW_SEC", 3600)
|
|
default_q: float = _env_float("DHT_MIN_Q", 0.6)
|
|
seed_refresh_interval: int = _env_int("DHT_SEED_REFRESH_INTERVAL", 30)
|
|
|
|
|
|
@lru_cache
|
|
def load_config() -> DHTConfig:
|
|
"""Load configuration with process-wide memoisation."""
|
|
|
|
return DHTConfig()
|
|
|
|
|
|
dht_config = load_config()
|
|
|