fleet-memory/hindsight-api-slim/hindsight_api/engine/retain/entity_processing.py
Nicolò Boschi f50cc25dfb
perf(stats): add bank_id to memory_links for direct filtering (#718)
The stats endpoint JOINs memory_links to memory_units just to filter
by bank_id.  With 8.2M+ links per bank this takes 18+ seconds, and
the control plane polls every 10s — perpetually blocking the server.

Add bank_id column directly to memory_links so the query can filter
on ml.bank_id instead of mu.bank_id, letting Postgres push the filter
down before the JOIN.

- Migration: add bank_id TEXT NOT NULL, backfill from memory_units
- All 4 INSERT paths (temporal, semantic, entity, causal) now write bank_id
- Stats query filters on ml.bank_id instead of mu.bank_id
2026-03-27 16:12:13 +01:00

112 lines
3.7 KiB
Python

"""
Entity processing for retain pipeline.
Handles entity extraction, resolution, and link creation for stored facts.
"""
import logging
from . import link_utils
from .types import EntityLink, ProcessedFact
logger = logging.getLogger(__name__)
async def process_entities_batch(
entity_resolver,
conn,
bank_id: str,
unit_ids: list[str],
facts: list[ProcessedFact],
log_buffer: list[str] = None,
user_entities_per_content: dict[int, list[dict]] = None,
entity_labels: list | None = None,
) -> list[EntityLink]:
"""
Process entities for all facts and create entity links.
This function:
1. Extracts entity mentions from fact texts
2. Merges user-provided entities with LLM-extracted entities
3. Resolves entity names to canonical entities
4. Creates entity records in the database
5. Returns entity links ready for insertion
Args:
entity_resolver: EntityResolver instance for entity resolution
conn: Database connection
bank_id: Bank identifier
unit_ids: List of unit IDs (same length as facts)
facts: List of ProcessedFact objects
log_buffer: Optional buffer for detailed logging
user_entities_per_content: Dict mapping content_index to list of user-provided entities
Returns:
List of EntityLink objects for batch insertion
"""
if not unit_ids or not facts:
return []
if len(unit_ids) != len(facts):
raise ValueError(f"Mismatch between unit_ids ({len(unit_ids)}) and facts ({len(facts)})")
user_entities_per_content = user_entities_per_content or {}
# Extract data for link_utils function
fact_texts = [fact.fact_text for fact in facts]
# Use occurred_start if available, otherwise use mentioned_at for entity timestamps
fact_dates = [fact.occurred_start if fact.occurred_start is not None else fact.mentioned_at for fact in facts]
# Convert EntityRef objects to dict format and merge with user-provided entities
entities_per_fact = []
for fact in facts:
# Start with LLM-extracted entities
llm_entities = [{"text": entity.name, "type": "CONCEPT"} for entity in (fact.entities or [])]
# Get user entities for this content (use content_index from fact)
user_entities = user_entities_per_content.get(fact.content_index, [])
# Merge with case-insensitive deduplication
seen_texts = {e["text"].lower() for e in llm_entities}
for user_entity in user_entities:
if user_entity["text"].lower() not in seen_texts:
llm_entities.append(
{
"text": user_entity["text"],
"type": user_entity.get("type", "CONCEPT"),
}
)
seen_texts.add(user_entity["text"].lower())
entities_per_fact.append(llm_entities)
# Use existing link_utils function for entity processing
entity_links = await link_utils.extract_entities_batch_optimized(
entity_resolver,
conn,
bank_id,
unit_ids,
fact_texts,
"", # context (not used in current implementation)
fact_dates,
entities_per_fact,
log_buffer, # Pass log_buffer for detailed logging
entity_labels=entity_labels,
)
return entity_links
async def insert_entity_links_batch(conn, entity_links: list[EntityLink], bank_id: str) -> None:
"""
Insert entity links in batch.
Args:
conn: Database connection
entity_links: List of EntityLink objects
bank_id: Bank identifier (stored directly on memory_links for fast filtering)
"""
if not entity_links:
return
await link_utils.insert_entity_links_batch(conn, entity_links, bank_id)