lekss361
9643979d2c
POST /api/v1/search reading listings_search_mv with ~20 cross-source filters, parameterized SQL (CAST(:x AS type), psycopg v3), whitelisted ORDER BY (Pydantic Literal), Redis 5min hot cache with graceful degradation (singleton pool via lru_cache). Verified vs data/sql/050_search_optimization.sql: matview column refs (total_area, lng, house_rating, sources[], has_avito/cian/yandex), SQL injection safety, cache failure swallow, router prefix. Deep-code-reviewer: APPROVE.
64 lines
2 KiB
Python
64 lines
2 KiB
Python
"""Search endpoint — POST /api/v1/search (Phase 3.2, master plan sec 9.1)."""
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from __future__ import annotations
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import logging
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import time
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from typing import Annotated
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from fastapi import APIRouter, Depends
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from sqlalchemy import text
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from sqlalchemy.orm import Session
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from app.core.db import get_db
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from app.schemas.search import SearchParams
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from app.schemas.search_response import SearchResponse, SearchResultItem
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from app.services.cache import get_search_cache
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from app.services.search_query import build_count_query, build_search_query
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logger = logging.getLogger(__name__)
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router = APIRouter()
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@router.post("/search", response_model=SearchResponse)
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async def search(
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params: SearchParams,
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db: Annotated[Session, Depends(get_db)],
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) -> SearchResponse:
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"""Поиск listings по фильтрам (cross-source matview + Redis 5min cache)."""
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started = time.monotonic()
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cache = get_search_cache()
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cache_key = cache.search_key(params.model_dump(mode="json"))
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cached = await cache.get(cache_key)
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if cached is not None:
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logger.info(
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"search cache HIT key=%s page=%d size=%d",
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cache_key[:24], params.page, params.page_size,
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)
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return SearchResponse.model_validate(cached)
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sql, args = build_search_query(params)
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rows = db.execute(text(sql), args).mappings().all()
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count_sql, count_args = build_count_query(params)
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total = int(db.execute(text(count_sql), count_args).scalar() or 0)
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items = [SearchResultItem.model_validate(dict(r)) for r in rows]
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elapsed_ms = (time.monotonic() - started) * 1000.0
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response = SearchResponse(
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items=items,
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total=total,
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page=params.page,
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page_size=params.page_size,
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elapsed_ms=round(elapsed_ms, 1),
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cache_hit=False,
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)
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await cache.set(cache_key, response.model_dump(mode="json"), ttl=cache.TTL_SEARCH)
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logger.info(
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"search MISS page=%d size=%d total=%d items=%d elapsed=%.1fms",
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params.page, params.page_size, total, len(items), elapsed_ms,
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)
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return response
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