preliminary metrics "CPU" and "DISK"

.vscode/launch.json

@@ -11,7 +11,7 @@
             "module": "kiwi_simple_metrics.main",
             "env": {
                 "METRIC_DISK__THRESHOLD": "85", // workaround!
-                "METRIC_DISK__PARAMS": "[\"/var\", \"/\"]",
+                "METRIC_DISK__PARAMS": "[\"/var\", \"/\", \"/dev\"]",
             },
             "justMyCode": true
         }

kiwi_simple_metrics/main.py

@@ -1,12 +1,39 @@
+import os
+import shutil
+
 import psutil
 
 from .settings import SETTINGS
 
 
 def main() -> None:
-    print(psutil.cpu_percent(interval=1))
+    # env parameters
     print(SETTINGS.model_dump())
 
+    # CPU metric
+    print(psutil.cpu_percent(interval=1))
+
+    # MEM metric
+
+    # DISK metric
+    # TODO test this using timeit
+    for path in SETTINGS.disk.params:
+        try:
+            sv = os.statvfs(path)
+            percent = sv.f_bavail / sv.f_blocks * 100
+        except ZeroDivisionError:
+            percent = 0
+
+        print(f"{path} Free (sv): {percent:.2f} %")
+
+        try:
+            total, _, free = shutil.disk_usage(path)
+            percent = free / total * 100
+        except ZeroDivisionError:
+            percent = 0
+
+        print(f"{path} Free (du): {percent:.2f} %")
+
 
 if __name__ == "__main__":
     main()