refactor: optimize structure, stability and runtime performance

routes/health.py

@@ -2,12 +2,62 @@
 # -*- coding: utf-8 -*-
 from __future__ import annotations
 
+import os
+import time
+
 from flask import Blueprint, jsonify
 
 import database
+import db_pool
 from services.time_utils import get_beijing_now
 
 health_bp = Blueprint("health", __name__)
+_PROCESS_START_TS = time.time()
+
+
+def _build_runtime_metrics() -> dict:
+    metrics = {
+        "uptime_seconds": max(0, int(time.time() - _PROCESS_START_TS)),
+    }
+
+    try:
+        pool_stats = db_pool.get_pool_stats() or {}
+        metrics["db_pool"] = {
+            "pool_size": int(pool_stats.get("pool_size", 0) or 0),
+            "available": int(pool_stats.get("available", 0) or 0),
+            "in_use": int(pool_stats.get("in_use", 0) or 0),
+        }
+    except Exception:
+        pass
+
+    try:
+        import psutil
+
+        proc = psutil.Process(os.getpid())
+        with proc.oneshot():
+            mem_info = proc.memory_info()
+            metrics["process"] = {
+                "rss_mb": round(float(mem_info.rss) / 1024 / 1024, 2),
+                "cpu_percent": round(float(proc.cpu_percent(interval=None)), 2),
+                "threads": int(proc.num_threads()),
+            }
+    except Exception:
+        pass
+
+    try:
+        from services import tasks as tasks_module
+
+        scheduler = getattr(tasks_module, "_task_scheduler", None)
+        if scheduler is not None:
+            queue_snapshot = scheduler.get_queue_state_snapshot() or {}
+            metrics["task_queue"] = {
+                "pending_total": int(queue_snapshot.get("pending_total", 0) or 0),
+                "running_total": int(queue_snapshot.get("running_total", 0) or 0),
+            }
+    except Exception:
+        pass
+
+    return metrics
 
 
 @health_bp.route("/health", methods=["GET"])
@@ -26,6 +76,6 @@ def health_check():
         "time": get_beijing_now().strftime("%Y-%m-%d %H:%M:%S"),
         "db_ok": db_ok,
         "db_error": db_error,
+        "metrics": _build_runtime_metrics(),
     }
     return jsonify(payload), (200 if db_ok else 500)
-