feat: Add health checking feature to service registry, which periodically checks service status and deletes unhealthy services

internal/reduce-node/node.go

@@ -29,7 +29,7 @@ func registerAsReduceNode() error {
 		Name:     "reduce-01",
 		NodeType: "reduce",
 		Address:  "localhost",
-		Port:     4001,
+		Port:     "4001",
 	}
 
 	json_data, err := json.Marshal(serviceRegisterReq)
@@ -46,6 +46,11 @@ func registerAsReduceNode() error {
 		return err
 	}
 
+	if resp.StatusCode != http.StatusOK {
+		log.Fatal("failed to register as reduce-node")
+		return err
+	}
+
 	defer resp.Body.Close()
 	var res map[string]interface{}