display and acknowledge alerts

hbd/server/threshold.py

@@ -56,6 +56,8 @@ class AlertState:
         self.threshold_value = None  # The threshold value that triggered alert
         self.operator = None  # The comparison operator (>, <, >=, etc.)
         self.formatted_message = None  # Formatted display message for UI
+        self.acknowledged = False  # Whether alert has been acknowledged
+        self.acknowledged_at = None  # Timestamp when acknowledged
     
     def update(
         self, 
@@ -101,6 +103,11 @@ class AlertState:
             self.level = level
             self.since = now
             self.notification_count = 0
+            # Reset acknowledgment on state change
+            if level != AlertLevel.OK:
+                # Only reset if changing to a different alert level
+                self.acknowledged = False
+                self.acknowledged_at = None
             return True
         
         return False
@@ -114,8 +121,13 @@ class AlertState:
             "last_value": self.last_value,
             "last_check": self.last_check,
             "notification_count": self.notification_count,
+            "acknowledged": self.acknowledged,
         }
         
+        # Include acknowledgment timestamp if acknowledged
+        if self.acknowledged_at is not None:
+            result["acknowledged_at"] = self.acknowledged_at
+        
         # Include threshold info if available
         if self.threshold_value is not None:
             result["threshold_value"] = self.threshold_value
@@ -125,6 +137,12 @@ class AlertState:
             result["formatted_message"] = self.formatted_message
         
         return result
+    
+    def acknowledge(self):
+        """Acknowledge this alert to stop reminder notifications."""
+        self.acknowledged = True
+        self.acknowledged_at = time.time()
+        logger.info("Alert acknowledged for %s", self.metric_path)
 
     def __str__(self):
         return self.to_dict().__str__()
@@ -1014,6 +1032,10 @@ class ThresholdChecker:
         if alert_state.level == AlertLevel.OK:
             return
         
+        # Skip reminders if alert has been acknowledged
+        if alert_state.acknowledged:
+            return
+        
         now = time.time()
         
         # Check if we should re-notify