删除多线程产图

app/api/qgis_map_export.py

@@ -28,14 +28,6 @@ logger = get_logger("api.qgis")
 
 router = APIRouter(prefix="/qgis", tags=["专题图导出"])
 
-# 线程池（按配置初始化 worker 数量）
-_worker_threads = getattr(settings, "QGIS_WORKER_THREADS", 4)
-_thread_pool = concurrent.futures.ThreadPoolExecutor(
-    max_workers=_worker_threads,
-    thread_name_prefix="qgis-worker",
-)
-logger.info(f"QGIS 线程池初始化: {_worker_threads} workers")
-
 # 去重锁
 _in_progress_locks: dict[str, asyncio.Lock] = {}
 _locks_lock = asyncio.Lock()
@@ -478,12 +470,3 @@ def _generate_maps_subprocess(chunk_models: list, config: dict, chunk_idx: int)
 
     logger.warning(f"[子进程{chunk_idx}] 无输出")
     return []
-
-# ============================================================
-# 清理函数
-# ============================================================
-
-def shutdown_thread_pool() -> None:
-    """关闭线程池（在 server.py lifespan 关闭阶段调用）"""
-    _thread_pool.shutdown(wait=False)
-    logger.info("QGIS 线程池已关闭")

app/core/server.py

@@ -36,13 +36,6 @@ async def lifespan(app: FastAPI):
 
     yield
 
-    # 清理资源
-    try:
-        from app.api.qgis_map_export import shutdown_thread_pool
-        shutdown_thread_pool()
-    except Exception:
-        pass
-
     logger.info("应用关闭")
 
 def create_app() -> FastAPI:

app/script/export_static_layers.py

@@ -27,7 +27,6 @@ GPKG_DIR = os.path.join(project_root, "app", "data", "gpkg")
 
 # 静态图层定义: {显示名: (schema.table, gpkg文件名)}
 STATIC_LAYERS = [
-    # ── 基础底图（已导出）──
     ("水库",               "qgis.rivers",                  "rivers.gpkg"),
     ("市州驻地",           "qgis.sx_capital",              "sx_capital.gpkg"),
     ("河流",               "qgis.river",                   "river.gpkg"),
@@ -44,7 +43,6 @@ STATIC_LAYERS = [
     ("traffic_railway",    "qgis.traffic_railway",         "traffic_railway.gpkg"),
     ("traffic_township",   "qgis.traffic_township",        "traffic_township.gpkg"),
     ("traffic_trunk_line", "qgis.traffic_trunk_line",      "traffic_trunk_line.gpkg"),
-    # ── 新增静态表（消除数据库连接）──
     ("积水点",             "qgis.hazard_hydrops",          "hazard_hydrops.gpkg"),
     ("排水口",             "qgis.lifeline_outfall",        "lifeline_outfall.gpkg"),
     ("供水管网",           "qgis.lifeline_pipe",           "lifeline_pipe.gpkg"),