second commit

2026-03-10 13:10:32 +01:00
parent b5cc0106c6
commit 3aac7ff9b9
101 changed files with 22046 additions and 1 deletions
@@ -0,0 +1,138 @@
+'''
+Created on 3 févr. 2026
+
+@author: denis
+'''
+from django.conf import settings
+
+# myapp/system_stats.py
+import threading
+import time
+import os
+import psutil
+
+# intervale de mise à jour (secondes)
+REFRESH_INTERVAL = 5
+RAMDISK = settings.RAMDISK_DEVICE
+
+_cache = {
+    "shm": [],
+    "cpu_info": {},
+    "memory_info": {},
+    "disk_info": {},
+    "ramdisk_info": {},
+    "updated_at": None
+}
+
+_lock = threading.Lock()
+_timer = None
+
+
+def _collect_once():
+    data = {}
+
+    # shm: liste /dev/shm si disponible
+    try:
+        path = "/dev/shm"
+        data["shm"] = os.listdir(path) if os.path.exists(path) and os.path.isdir(path) else []
+    except Exception as e:
+        data["shm_error"] = str(e)
+
+
+    # cpu_info
+    try:
+        cpu_times = psutil.cpu_times_percent(interval=None, percpu=False)._asdict()
+        data["cpu_info"] = {
+            "cpu_count": psutil.cpu_count(logical=True),
+            "cpu_count_physical": psutil.cpu_count(logical=False),
+            "cpu_percent": psutil.cpu_percent(interval=None),
+            "cpu_times_percent": cpu_times
+        }
+    except Exception as e:
+        data["cpu_info_error"] = str(e)
+
+
+    # memory_info
+    try:
+        vm = psutil.virtual_memory()._asdict()
+        sm = psutil.swap_memory()._asdict()
+        data["memory_info"] = {"virtual_memory": vm, "swap_memory": sm}
+    except Exception as e:
+        data["memory_info_error"] = str(e)
+
+
+    # disk_info (root and partitions)
+    # ex: if mountpoint == "/ramdisk" and fstype=="tmpfs" then usage.percent, usage.free, etc ...
+    try:
+        usage_root = psutil.disk_usage("/")._asdict()
+        parts = []
+        for p in psutil.disk_partitions(all=False):
+            try:
+                du = psutil.disk_usage(p.mountpoint)._asdict()
+            except Exception:
+                du = {}
+            parts.append({"device": p.device, "mountpoint": p.mountpoint, "fstype": p.fstype, "usage": du})
+        data["disk_info"] = {"root": usage_root, "partitions": parts}
+    except Exception as e:
+        data["disk_info_error"] = str(e)
+
+    # ramdisk
+    # ex: if mountpoint == "/ramdisk" and fstype=="tmpfs" then usage.percent, usage.free, etc ...
+    try:
+        for part in psutil.disk_partitions(all=True):
+            if part.mountpoint == RAMDISK and part.fstype.lower() == "tmpfs":
+                usage = psutil.disk_usage(part.mountpoint)
+                data["ramdisk_info"] = {
+                    "percent": usage.percent,
+                    "mount": part.mountpoint,
+                    "device": part.device,
+                    "fstype": part.fstype,
+                    "total": usage.total,
+                    "used": usage.used,
+                    "free": usage.free,
+                }
+    except Exception as e:
+        data["ramdisk_info_error"] = str(e)
+
+    data["updated_at"] = time.time()
+    return data
+
+
+def _update_cache():
+    global _timer
+    try:
+        new = _collect_once()
+        with _lock:
+            _cache.update(new)
+    finally:
+        # reprogrammer
+        _timer = threading.Timer(REFRESH_INTERVAL, _update_cache)
+        _timer.daemon = True
+        _timer.start()
+
+
+def start_background_updater(interval_seconds: int = None):
+    global REFRESH_INTERVAL, _timer
+    if interval_seconds:
+        REFRESH_INTERVAL = interval_seconds
+    if _timer is not None:
+        return
+    # première collecte synchronisée
+    with _lock:
+        _cache.update(_collect_once())
+    _timer = threading.Timer(REFRESH_INTERVAL, _update_cache)
+    _timer.daemon = True
+    _timer.start()
+
+
+def stop_background_updater():
+    global _timer
+    if _timer is not None:
+        _timer.cancel()
+        _timer = None
+
+
+def get_cached_stats():
+    with _lock:
+        # retourner copie pour sécurité
+        return dict(_cache)