Logan
109 lines
3.7 KiB
Python
109 lines
3.7 KiB
Python
"""
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Re-correlation sweep.
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Runs every summary_interval_minutes (same tick as the summarizer). Each pass
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finds calls that are:
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- recently ended (ended_at within the last recorrelation_scan_minutes)
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- still orphaned (incident_id is null)
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and re-runs the incident correlator against currently-active incidents, using
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the call's own started_at as the time anchor so the window is correct regardless
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of when the sweep fires.
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Never creates new incidents — link-only. Zero LLM tokens (uses pre-computed
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talkgroup strings, haversine math, and stored embeddings).
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"""
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import asyncio
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from datetime import datetime, timezone, timedelta
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from typing import Optional
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from app.internal.logger import logger
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from app.internal import firestore as fstore
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from app.config import settings
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async def recorrelation_loop() -> None:
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interval = settings.summary_interval_minutes * 60
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logger.info(
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f"Re-correlation sweep started — "
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f"interval: {settings.summary_interval_minutes}m, "
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f"scan window: {settings.recorrelation_scan_minutes}m"
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)
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while True:
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await asyncio.sleep(interval)
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try:
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await _run_sweep_pass()
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except Exception as e:
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logger.error(f"Re-correlation sweep failed: {e}")
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async def _run_sweep_pass() -> None:
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cutoff = datetime.now(timezone.utc) - timedelta(minutes=settings.recorrelation_scan_minutes)
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# Server-side range query: only calls that ended within the scan window.
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# Filter incident_id=null client-side (Firestore can't query for missing fields).
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# This keeps the fetched set small regardless of total collection size.
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recent_ended = await fstore.collection_where("calls", [
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("status", "==", "ended"),
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("ended_at", ">=", cutoff),
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])
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orphans = [c for c in recent_ended if not c.get("incident_id")]
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if not orphans:
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return
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logger.info(f"Re-correlation sweep: {len(orphans)} orphaned call(s) to check")
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linked = 0
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for call in orphans:
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if await _recorrelate_orphan(call):
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linked += 1
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if linked:
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logger.info(f"Re-correlation sweep: linked {linked}/{len(orphans)} orphaned call(s)")
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async def _recorrelate_orphan(call: dict) -> bool:
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"""
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Attempt to link a single orphaned call to an existing incident.
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Returns True if a match was found and the call was linked.
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"""
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from app.internal import incident_correlator
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call_id = call.get("call_id")
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started_at = _parse_dt(call.get("started_at"))
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if not call_id or not started_at:
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return False
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# All data needed for correlation was stored by the first-pass extraction.
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incident_id = await incident_correlator.correlate_call(
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call_id = call_id,
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node_id = call.get("node_id", ""),
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system_id = call.get("system_id"),
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talkgroup_id = call.get("talkgroup_id"),
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talkgroup_name = call.get("talkgroup_name"),
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tags = call.get("tags") or [],
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incident_type = call.get("incident_type"),
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location = call.get("location"),
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location_coords= call.get("location_coords"),
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reference_time = started_at, # anchor window to when the call happened
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create_if_new = False, # never create — link-only
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)
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if incident_id:
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logger.info(
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f"Re-correlation: linked orphaned call {call_id} → incident {incident_id}"
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)
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return True
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return False
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def _parse_dt(value) -> Optional[datetime]:
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if not value:
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return None
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try:
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dt = datetime.fromisoformat(str(value).replace("Z", "+00:00"))
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if dt.tzinfo is None:
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dt = dt.replace(tzinfo=timezone.utc)
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return dt
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except Exception:
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return None
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