70 lines
2.1 KiB
Python
70 lines
2.1 KiB
Python
"""
|
|
Phase 1 — Step 1.4: device_alerts (SQLite → Postgres)
|
|
|
|
device_alerts is a "current state" table — one row per (device_serial, subsystem).
|
|
The SQLite PK is (device_serial, subsystem); Postgres adds a BIGSERIAL surrogate PK
|
|
with a unique constraint on the pair.
|
|
|
|
Run on VPS:
|
|
docker compose exec backend python -m migration.migrate_device_alerts
|
|
"""
|
|
|
|
import asyncio
|
|
import sys
|
|
|
|
from sqlalchemy import text
|
|
|
|
from migration.utils import open_sqlite, AsyncPgSession, parse_dt, log_run, pg_count
|
|
|
|
SCRIPT = "migrate_device_alerts"
|
|
|
|
|
|
async def run() -> None:
|
|
sqlite = await open_sqlite()
|
|
rows = await sqlite.execute_fetchall("SELECT * FROM device_alerts")
|
|
await sqlite.close()
|
|
|
|
source_count = len(rows)
|
|
print(f"Source (SQLite): {source_count} device_alerts rows")
|
|
|
|
if source_count == 0:
|
|
print("Nothing to migrate.")
|
|
await log_run(SCRIPT, 0, 0, notes="source empty")
|
|
return
|
|
|
|
records = [
|
|
{
|
|
"device_serial": r["device_serial"],
|
|
"subsystem": r["subsystem"],
|
|
"state": r["state"],
|
|
"message": r["message"],
|
|
"updated_at": parse_dt(r["updated_at"]),
|
|
}
|
|
for r in rows
|
|
]
|
|
|
|
async with AsyncPgSession() as session:
|
|
async with session.begin():
|
|
await session.execute(
|
|
text("""
|
|
INSERT INTO device_alerts (device_serial, subsystem, state, message, updated_at)
|
|
VALUES (:device_serial, :subsystem, :state, :message, :updated_at)
|
|
ON CONFLICT (device_serial, subsystem) DO NOTHING
|
|
"""),
|
|
records,
|
|
)
|
|
dest_count = await pg_count(session, "device_alerts")
|
|
|
|
if dest_count < source_count:
|
|
msg = f"Count mismatch: source={source_count} postgres={dest_count}"
|
|
print(f"ERROR: {msg}", file=sys.stderr)
|
|
await log_run(SCRIPT, source_count, dest_count, success=False, notes=msg)
|
|
sys.exit(1)
|
|
|
|
print(f"Postgres: {dest_count} rows ✓")
|
|
await log_run(SCRIPT, source_count, dest_count)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
asyncio.run(run())
|