Update metrics.py

project/pi/app/metrics.py

-import platform
+import platform, time
 
 import psutil
 
@@ -11,8 +11,10 @@ def metrics(node: int):
     cores_physical = psutil.cpu_count(logical=False)
     memory = psutil.virtual_memory()
     boot_time = psutil.boot_time()
+    system_time = time.time()
     partitions = psutil.disk_partitions()
 
+
     metrics_list = [Metric(
         metric_name="cpu_usage",
         metric_type="gauge",
@@ -42,11 +44,19 @@ def metrics(node: int):
     ), Metric(
         metric_name="boot_time",
         metric_type="gauge",
-        comment="Time in ms",
+        comment="Time in sec since epoch",
         value=boot_time,
         params={
             "node": f"{node}"
         }
+    ), Metric(
+        metric_name="system_time",
+        metric_type="gauge",
+        comment="Time in sec since epoch",
+        value=system_time,
+        params={
+            "node": f"{node}"
+        }
     ), Metric(
         metric_name="memory_usage",
         metric_type="gauge",