group property reader: deactivate values inheritance

config/device-classes/generic/ekinops.yaml

@@ -36,4 +36,57 @@ identify:
           - type: modify
             modify_method: regexSubmatch
             regex: 'Release\s+([0-9\.]+)'
-            format: "$1"
+            format: "$1"
+
+components:
+  interfaces:
+    count: 1.3.6.1.2.1.2.1.0
+    properties:
+      detection: snmpwalk
+      inherit_values: false
+      values:
+        ifIndex:
+          oid: 1.3.6.1.2.1.2.2.1.1
+        ifDescr:
+          oid: 1.3.6.1.2.1.2.2.1.2
+        ifType:
+          oid: 1.3.6.1.2.1.2.2.1.3
+          operators:
+            - type: modify
+              modify_method: map
+              mappings: ifType.yaml
+        ifPhysAddress:
+          oid: 1.3.6.1.2.1.2.2.1.6
+          use_raw_result: true
+          operators:
+            - type: modify
+              modify_method: regexSubmatch
+              regex: '(.{2})(.{2})(.{2})(.{2})(.{2})(.{2})'
+              format: "$1:$2:$3:$4:$5:$6"
+              return_on_mismatch: true
+        ifAdminStatus:
+          oid: 1.3.6.1.2.1.2.2.1.7
+          operators:
+            - type: modify
+              modify_method: map
+              ignore_on_mismatch: true
+              mappings:
+                "1": "up"
+                "2": "down"
+                "3": "testing"
+        ifOperStatus:
+          oid: 1.3.6.1.2.1.2.2.1.8
+          operators:
+            - type: modify
+              modify_method: map
+              ignore_on_mismatch: true
+              mappings:
+                "1": "up"
+                "2": "down"
+                "3": "testing"
+                "4": "unknown"
+                "5": "dormant"
+                "6": "notPresent"
+                "7": "lowerLayerDown"
+        ifName:
+          oid: 1.3.6.1.2.1.31.1.1.1.1

core/communicator/deviceclass/device_class.go

@@ -1558,8 +1558,17 @@ func interface2GroupPropertyReader(i interface{}, parentGroupPropertyReader grou
 			return nil, errors.New("oid reader is no list of oids")
 		}
 
+		inheritValuesFromParent := true
+		if b, ok := m["inherit_values"]; ok {
+			bb, ok := b.(bool)
+			if !ok {
+				return nil, errors.New("inherit_values needs to be a boolean")
+			}
+			inheritValuesFromParent = bb
+		}
+
 		//overwrite parent
-		if parentGroupPropertyReader != nil {
+		if inheritValuesFromParent && parentGroupPropertyReader != nil {
 			parentSNMPGroupPropertyReader, ok := parentGroupPropertyReader.(*snmpGroupPropertyReader)
 			if !ok {
 				return nil, errors.New("can't merge SNMP group property reader with property reader of different type")