provide defaults for threshold_configs

hbd/server/threshold.py

@@ -14,6 +14,7 @@ import time
 from enum import Enum
 from typing import Dict, Any, Optional, Tuple, Callable
 from . import notify as notify_mod
+from .config import THRESHOLD_DEFAULTS
 
 logger = logging.getLogger(__name__)
 eventlog = notify_mod.eventlog
@@ -386,29 +387,49 @@ class ThresholdChecker:
     def _parse_multi_config(self, config: Dict[str, Any]):
         """Parse multiple named threshold configurations."""
         threshold_configs = config.get("threshold_configs", {})
-        
+
         if not threshold_configs:
             logger.info("No threshold configurations defined")
             return
-        
-        # Parse each named configuration
+
+        # Build effective_defaults: THRESHOLD_DEFAULTS merged with the 'default' config (if present).
+        # All other configs inherit any metric not explicitly defined from effective_defaults.
+        effective_defaults: Dict[str, ThresholdConfig] = {}
+        for plugin_name, plugin_thresholds in THRESHOLD_DEFAULTS.get("thresholds", {}).items():
+            if isinstance(plugin_thresholds, dict):
+                self._parse_plugin_thresholds(plugin_name, plugin_thresholds, target_dict=effective_defaults)
+
+        if "default" in threshold_configs:
+            default_data = threshold_configs["default"]
+            if isinstance(default_data, dict) and "thresholds" in default_data:
+                for plugin_name, plugin_thresholds in default_data["thresholds"].items():
+                    if isinstance(plugin_thresholds, dict):
+                        self._parse_plugin_thresholds(plugin_name, plugin_thresholds, target_dict=effective_defaults)
+
+        self.threshold_configs["default"] = dict(effective_defaults)
+        logger.info("Registered 'default' threshold config with %d metrics", len(effective_defaults))
+
+        # Parse each named configuration, seeding it with effective_defaults first
         for config_name, config_data in threshold_configs.items():
+            if config_name == "default":
+                continue  # already handled above
+
             if not isinstance(config_data, dict):
                 logger.warning("Invalid threshold config '%s', skipping", config_name)
                 continue
-            
+
             if "thresholds" not in config_data:
                 logger.warning("No thresholds in config '%s', skipping", config_name)
                 continue
-            
+
             logger.info("Parsing threshold configuration: %s", config_name)
-            self.threshold_configs[config_name] = {}
-            
+            self.threshold_configs[config_name] = dict(effective_defaults)
+
             thresholds_config = config_data["thresholds"]
             for plugin_name, plugin_thresholds in thresholds_config.items():
                 if not isinstance(plugin_thresholds, dict):
                     continue
-                
+
                 self._parse_plugin_thresholds(
                     plugin_name,
                     plugin_thresholds,