support empty namespace id.

examples/actix-web-example/config.yml

@@ -2,7 +2,7 @@ shenyu:
   register:
     register_type: "http"
     servers: "http://127.0.0.1:9095"
-    namespace_id: "testNamespaceId"
+    namespace_id: "649330b6-c2d7-4edc-be8e-8a54df9eb385"
     props:
       username: "admin"
       password: "123456"

examples/axum-example/config.yml

@@ -2,7 +2,7 @@ shenyu:
   register:
     register_type: "http"
     servers: "http://127.0.0.1:9095"
-    namespace_id: "testNamespaceId"
+    namespace_id: ""
     props:
       username: "admin"
       password: "123456"

shenyu-client-rust/src/core.rs

@@ -20,6 +20,7 @@ use crate::error::ShenYuError;
 use crate::model::{EventType, UriInfo};
 use dashmap::DashMap;
 use serde_json::Value;
+use std::collections::HashMap;
 use std::io::{Error, ErrorKind};
 use std::net::IpAddr;
 use tracing::{error, info, warn};
@@ -94,10 +95,14 @@ impl ShenyuClient {
             "Content-Type".to_string(),
             "application/json;charset=UTF-8".to_string(),
         );
-        let namespace_ids: Vec<String> = config.register.namespace_id.clone().map_or(
-            vec![SYS_DEFAULT_NAMESPACE_ID.to_string()],
-            |x| -> Vec<String> { x.split(';').map(ToString::to_string).collect() },
-        );
+        let namespace_ids: Vec<String> = config
+            .register
+            .namespace_id
+            .clone()
+            .filter(|x| !x.is_empty())
+            .map_or(vec![SYS_DEFAULT_NAMESPACE_ID.to_string()], |x| {
+                x.split(';').map(ToString::to_string).collect()
+            });
 
         let mut client = ShenyuClient {
             headers,
@@ -389,19 +394,47 @@ impl ShenyuClient {
         let props = &self.env.discovery.props.clone();
         let plugin_name = &self.env.discovery.plugin_name.clone();
         let context_path = &self.env.uri.context_path.clone();
+        let namespace_ids = &self.namespace_ids.clone();
 
         let port = &self.port;
         let host = &self.host;
+        namespace_ids.iter().for_each(|namespace_id| {
+            self._register_discovery_config(
+                discovery_type,
+                register_path,
+                server_lists,
+                props,
+                plugin_name,
+                context_path,
+                namespace_id,
+                host,
+                port,
+            );
+        });
+    }
 
+    fn _register_discovery_config(
+        &self,
+        discovery_type: &str,
+        register_path: &str,
+        server_lists: &str,
+        props: &HashMap<String, String>,
+        plugin_name: &str,
+        context_path: &str,
+        namespace_id: &str,
+        host: &Option<String>,
+        port: &u16,
+    ) {
         let json_data = serde_json::json!({
             "name": "default".to_string() + discovery_type,
             "selectorName": context_path,
             "handler": "{}",
             "listenerNode":register_path,
             "serverList": server_lists,
             "props": props,
-            "discoveryType": discovery_type.clone(),
+            "discoveryType": discovery_type,
             "pluginName": plugin_name,
+            "namespaceId": namespace_id,
         });
 
         // Broadcast to all shenyu admin.