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Federation Node — Envelope Store (Phase 2 Vault)
================================================
Contract: C-FED-NODE-001 v0.1.1
Persistent SQLite envelope storage backed by Cloudflare D1.
"""
from __future__ import annotations
import uuid
import json
from datetime import datetime, timezone
from typing import Optional
from models import DeliveryStatus
import d1_client
class EnvelopeStore:
def __init__(self, max_envelopes: int = 1000):
self._max = max_envelopes
async def get_count(self) -> int:
rs = await d1_client.execute_sql("SELECT COUNT(*) as c FROM envelopes")
return rs[0]["c"] if rs else 0
async def is_full(self) -> bool:
return await self.get_count() >= self._max
async def accept(
self,
*,
sender_seal: str,
sender_origin: str,
message_class: str,
payload: dict,
delivery: dict,
trust_tier: str,
initial_status: DeliveryStatus = DeliveryStatus.QUEUED,
) -> dict:
now = datetime.now(timezone.utc).isoformat()
envelope_id = str(uuid.uuid4())
await d1_client.execute_sql(
'''INSERT INTO envelopes
(envelope_id, protocol_version, message_class, sender_seal, recipient_seal, payload_body, status, received_at)
VALUES (?, ?, ?, ?, ?, ?, ?, ?)''',
[
envelope_id,
"1.0.0",
message_class,
sender_seal,
"NODE",
json.dumps(payload),
initial_status.value,
now
]
)
history = [
{"status": DeliveryStatus.RECEIVED.value, "at": now},
{"status": DeliveryStatus.VALIDATED.value, "at": now},
]
await d1_client.execute_sql(
"INSERT INTO status_history (envelope_id, status, transitioned_at) VALUES (?, ?, ?), (?, ?, ?)",
[envelope_id, DeliveryStatus.RECEIVED.value, now, envelope_id, DeliveryStatus.VALIDATED.value, now]
)
if initial_status == DeliveryStatus.QUARANTINED:
history.append({"status": DeliveryStatus.QUARANTINED.value, "at": now})
await d1_client.execute_sql(
"INSERT INTO status_history (envelope_id, status, transitioned_at) VALUES (?, ?, ?)",
[envelope_id, DeliveryStatus.QUARANTINED.value, now]
)
else:
history.append({"status": DeliveryStatus.QUEUED.value, "at": now})
await d1_client.execute_sql(
"INSERT INTO status_history (envelope_id, status, transitioned_at) VALUES (?, ?, ?)",
[envelope_id, DeliveryStatus.QUEUED.value, now]
)
return {
"envelope_id": envelope_id,
"status": initial_status,
"sender_seal": sender_seal,
"sender_origin": sender_origin,
"message_class": message_class,
"payload": payload,
"delivery": delivery,
"trust_tier": trust_tier,
"received_at": now,
"status_history": history,
}
async def get_envelope(self, envelope_id: str) -> Optional[dict]:
rs = await d1_client.execute_sql("SELECT * FROM envelopes WHERE envelope_id = ?", [envelope_id])
if not rs:
return None
record = rs[0]
try:
payload = json.loads(record["payload_body"])
except:
payload = {"body": record["payload_body"]}
return {
"envelope_id": record["envelope_id"],
"status": record["status"],
"sender_seal": record["sender_seal"],
"message_class": record["message_class"],
"received_at": record["received_at"],
"payload": payload,
}
async def list_envelopes(self, limit: int = 20, status_filter: Optional[str] = None) -> dict:
total_rs = await d1_client.execute_sql("SELECT COUNT(*) as c FROM envelopes")
total = total_rs[0]["c"] if total_rs else 0
query = "SELECT * FROM envelopes"
params = []
if status_filter:
query += " WHERE status = ?"
params.append(status_filter)
query += " ORDER BY received_at DESC LIMIT ?"
params.append(limit)
rs = await d1_client.execute_sql(query, params)
envelopes = []
for r in rs:
try:
payload = json.loads(r["payload_body"])
preview = str(payload.get("body", ""))[:120]
except:
preview = str(r["payload_body"])[:120]
envelopes.append({
"envelope_id": r["envelope_id"],
"status": r["status"],
"sender_origin": "Federation",
"sender_seal": r["sender_seal"],
"message_class": r["message_class"],
"received_at": r["received_at"],
"payload_preview": preview,
})
return {
"total": total,
"showing": len(envelopes),
"envelopes": envelopes
}
async def get_status(self, envelope_id: str) -> Optional[dict]:
rs = await d1_client.execute_sql("SELECT * FROM envelopes WHERE envelope_id = ?", [envelope_id])
if not rs:
return None
record = rs[0]
hist_rs = await d1_client.execute_sql("SELECT status, transitioned_at as at FROM status_history WHERE envelope_id = ? ORDER BY id ASC", [envelope_id])
return {
"envelope_id": record["envelope_id"],
"status": record["status"],
"sender_seal": record["sender_seal"],
"message_class": record["message_class"],
"trust_tier": "UNKNOWN",
"received_at": record["received_at"],
"status_history": hist_rs,
}
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