fix: Example Repair the subjective and objective offline logic of noeds (OpenAtomFoundation#3049)

* Example Repair the subjective and objective offline logic of primary and secondary nodes

* fix comment

---------

Co-authored-by: wuxianrong <[email protected]>

Author: Mixficsol

codis/pkg/topom/topom_sentinel.go

@@ -74,10 +74,17 @@ func (s *Topom) checkAndUpdateGroupServerState(conf *Config, group *models.Group
 			}
 
 			// Start the election master node
-			if groupServer.State == models.GroupServerStateOffline && isGroupMaster(state, group) {
-				*masterOfflineGroups = append(*masterOfflineGroups, group)
-			} else {
-				*slaveOfflineGroups = append(*slaveOfflineGroups, group)
+			// Currently, both primary and secondary nodes have subjective and objective logics.
+			// If it is subjective, we will not perform any operation. If more than 10 probe counts
+			// fail, it is defined as objective logics, If it is an objective offline, we will add the
+			// node to masterOfflineGroups or slaveOfflineGroups respectively, and then notify the Proxy
+			// to change the meta information
+			if groupServer.State == models.GroupServerStateOffline {
+				if isGroupMaster(state, group) {
+					*masterOfflineGroups = append(*masterOfflineGroups, group)
+				} else {
+					*slaveOfflineGroups = append(*slaveOfflineGroups, group)
+				}
 			}
 		}
 	} else {