Ryan Malloy 317f74b33b Add search backend: FastAPI + FastMCP + pgvector for docs Q&A and live SQL
Search stack replicates the Hamilton site pattern with pg_orrery-specific
additions:

- FastAPI REST API (chat SSE streaming, semantic search, health check)
- FastMCP server at /mcp with doc search and live SQL query tools
- pgvector + pgai vectorizer for 1024-dim document embeddings
- Hybrid search (semantic cosine + text ILIKE with pg_trgm GIN)
- Dual LLM backend: self-hosted qwen3 via GPU gateway or Anthropic Claude
- Live read-only pg_orrery SQL execution with safety guardrails
  (SELECT-only validation, read-only transaction, 5s timeout, 100-row cap)
- Convenience MCP tools: planet_position, sky_survey, satellite_pass
- MDX content ingestion from docs/src/content/docs/ (50 pages)
- Docker Compose: pg_orrery+pgvector DB, pgai, vectorizer-worker, API
- Alembic async migrations, Makefile, .env.example
2026-03-01 15:42:14 -07:00

18 lines
462 B
Python

from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
from orrery_search.config import settings
engine = create_async_engine(
settings.database_url,
echo=False,
pool_pre_ping=True,
pool_size=10,
max_overflow=20,
)
async_session = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
async def get_db() -> AsyncSession:
async with async_session() as session:
yield session