File size: 974 Bytes
a8b4b87 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | """YAWAR — blood / receipt bus. Append-only, immutable receipts.
Doctrine D-YAWAR-FLOW: agents READ never WRITE. Writes only at RUWAY.
Doctrine: ≤10 SLOC for append + snapshot.
SENTRA hooks inspect every appended packet (immune system).
"""
import hashlib, json
from typing import Any
class Yawar:
def __init__(self): self.receipts = []; self.snapshots = {}
def append(self, packet: dict, sentra_inspect: Any = None) -> str:
if sentra_inspect and not sentra_inspect(packet):
raise PermissionError("SENTRA rejected packet")
h = hashlib.sha256(json.dumps(packet, sort_keys=True, default=str).encode()).hexdigest()
self.receipts.append({"hash": h, "packet": packet}) # immutable append
return h
def snapshot(self, layer: str, data: dict) -> None:
self.snapshots[layer] = json.loads(json.dumps(data, default=str)) # frozen copy
def read(self, layer: str) -> dict: return self.snapshots.get(layer, {})
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