adapt rest of checks to use OK alerts

src/lego_monitoring/checks/cpu.py

@@ -27,4 +27,4 @@ def cpu_check() -> list[Alert]:
             )
         ]
     else:
-        return []
+        return [Alert(alert_type=AlertType.CPU, message=f"CPU load: {percentage:.2f}% (nominal)", severity=Severity.OK)]

src/lego_monitoring/checks/net.py

@@ -25,8 +25,8 @@ class NetIOTracker:
         stat_name: str,
         interface: str,
     ) -> Optional[Alert]:
+        current_stat_natural = naturalsize(current_stat_bytes_per_sec, binary=True)
         if critical_threshold and (IS_TESTING or current_stat_bytes_per_sec >= critical_threshold):
-            current_stat_natural = naturalsize(current_stat_bytes_per_sec, binary=True)
             critical_threshold_natural = naturalsize(critical_threshold, binary=True)
             return Alert(
                 alert_type=AlertType.NET,
@@ -34,13 +34,18 @@ class NetIOTracker:
                 severity=Severity.CRITICAL,
             )
         elif warning_threshold and (IS_TESTING or current_stat_bytes_per_sec >= warning_threshold):
-            current_stat_natural = naturalsize(current_stat_bytes_per_sec, binary=True)
             warning_threshold_natural = naturalsize(warning_threshold, binary=True)
             return Alert(
                 alert_type=AlertType.NET,
                 message=f"Interface {interface} {stat_name} {current_stat_natural}/s >= {warning_threshold_natural}/s",
                 severity=Severity.WARNING,
             )
+        else:
+            return Alert(
+                alert_type=AlertType.NET,
+                message=f"Interface {interface} {stat_name} {current_stat_natural}/s (nominal)",
+                severity=Severity.OK,
+            )
 
     def net_check(self) -> list[Alert]:
         alerts = []

src/lego_monitoring/checks/ram.py

@@ -27,4 +27,6 @@ def ram_check() -> list[Alert]:
             )
         ]
     else:
-        return []
+        return [
+            Alert(alert_type=AlertType.RAM, message=f"RAM usage: {percentage:.2f}% (nominal)", severity=Severity.OK)
+        ]

src/lego_monitoring/checks/temp/__init__.py

@@ -24,8 +24,11 @@ def temp_check() -> list[Alert]:
                     severity=Severity.WARNING,
                 )
             else:
-                continue
+                alert = Alert(
+                    alert_type=AlertType.TEMP,
+                    message=f"{sensor} {r.label}: {r.current_temp}°C (nominal)",
+                    severity=Severity.OK,
+                )
             alert_list.append(alert)
-    if len(alert_list) == 0:
-        alert_list.append(Alert(alert_type=AlertType.TEMP, message="All sensors nominal", severity=Severity.OK))
+
     return alert_list

src/lego_monitoring/checks/vulnix/__init__.py

@@ -50,5 +50,7 @@ async def vulnix_check() -> list[Alert]:
     if IS_TESTING:
         alert_list[0].message += "\n(just testing)"
         return [alert_list[0]]
+    elif len(alert_list) == 0:
+        return [Alert(AlertType.VULN, message="No vulnerabilities found", severity=Severity.OK)]
     else:
         return alert_list