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build(agent): new-agents#a6e6ec iteration

This commit is contained in:
agent-a6e6ec231c5f7801 2026-04-20 14:55:32 +02:00
parent 3ed38c0c33
commit 3bd6933eca
1 changed files with 10 additions and 2 deletions
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12
marketmesh_privacy_preserving_federated_/core.py
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@ -21,14 +21,16 @@ class Contract:
class DeltaSync: class DeltaSync:
"""Simplified delta-sync payload carrying aggregated signals with a version vector.""" """Simplified delta-sync payload carrying aggregated signals with a version vector."""
def __init__(self, contract_id: str, version_vector: Dict[str, int], payload: Dict[str, float], hash_: str): def __init__(self, contract_id: str, version_vector: Dict[str, int], payload: Dict[str, float], hash_: str, timestamp: float | None = None):
self.contract_id = contract_id self.contract_id = contract_id
self.version_vector = dict(version_vector) self.version_vector = dict(version_vector)
self.payload = dict(payload) self.payload = dict(payload)
self.hash = hash_ self.hash = hash_
self.timestamp = timestamp
def __repr__(self) -> str: def __repr__(self) -> str:
return f"DeltaSync(contract_id={self.contract_id}, version_vector={self.version_vector}, hash={self.hash})" ts = f", timestamp={self.timestamp}" if self.timestamp is not None else ""
return f"DeltaSync(contract_id={self.contract_id}, version_vector={self.version_vector}, hash={self.hash}{ts})"
def merge(self, other: "DeltaSync") -> "DeltaSync": def merge(self, other: "DeltaSync") -> "DeltaSync":
"""Deterministically merge two DeltaSync payloads for the same contract. """Deterministically merge two DeltaSync payloads for the same contract.
@ -70,6 +72,12 @@ class DeltaSync:
"version_vector": merged_version_vector, "version_vector": merged_version_vector,
"payload": merged_payload, "payload": merged_payload,
} }
# If either delta carries a timestamp, include it in the hash to enable replay protection
if (self.timestamp is not None) or (other.timestamp is not None):
ts_self = self.timestamp if self.timestamp is not None else 0.0
ts_other = other.timestamp if other.timestamp is not None else 0.0
merged_ts = max(ts_self, ts_other)
payload_for_hash["timestamp"] = merged_ts
merged_hash = hashlib.sha256( merged_hash = hashlib.sha256(
json.dumps(payload_for_hash, sort_keys=True).encode("utf-8") json.dumps(payload_for_hash, sort_keys=True).encode("utf-8")
).hexdigest() ).hexdigest()