Fix the issue of configuration modification failure

sermant-agentcore/sermant-agentcore-implement/src/main/java/io/sermant/implement/service/dynamicconfig/kie/client/kie/KieClient.java

@@ -153,7 +153,14 @@ public boolean publishConfig(String key, Map<String, String> labels, String cont
 
     @Override
     public boolean publishConfig(String key, String group, String content) {
-        return this.publishConfig(key, LabelGroupUtils.resolveGroupLabels(group), content, true);
+        final Optional<String> keyIdOptional = this.getKeyId(key, group);
+        if (keyIdOptional.isPresent()) {
+            return this.doUpdateConfig(keyIdOptional.get(), content, true);
+        }
+
+        // If not exists, then publish
+        final Map<String, String> labels = LabelGroupUtils.resolveGroupLabels(group);
+        return this.publishConfig(key, labels, content, true);
     }
 
     /**
@@ -255,7 +262,7 @@ public boolean removeConfig(String key, String group) {
             return false;
         }
         final HttpResult httpResult = this.httpClient.doDelete(buildKeyIdUrl(keyIdOptional.get()));
-        return httpResult.getCode() == HttpStatus.SC_OK;
+        return httpResult.getCode() == HttpStatus.SC_NO_CONTENT;
     }
 
     @Override

sermant-agentcore/sermant-agentcore-implement/src/main/java/io/sermant/implement/service/dynamicconfig/kie/listener/SubscriberManager.java

@@ -216,14 +216,7 @@ public boolean removeGroupListener(String group, DynamicConfigListener listener)
      * @return publish result
      */
     public boolean publishConfig(String key, String group, String content) {
-        final Optional<String> keyIdOptional = this.kieClient.getKeyId(key, group);
-        if (!keyIdOptional.isPresent()) {
-            // If not exists, then publish
-            final Map<String, String> labels = LabelGroupUtils.resolveGroupLabels(group);
-            return kieClient.publishConfig(key, labels, content, true);
-        } else {
-            return kieClient.doUpdateConfig(keyIdOptional.get(), content, true);
-        }
+        return kieClient.publishConfig(key, group, content);
     }
 
     /**

sermant-agentcore/sermant-agentcore-implement/src/main/java/io/sermant/implement/service/dynamicconfig/zookeeper/ZooKeeperClient.java

@@ -171,7 +171,12 @@ private Map<String, List<String>> fuzzyGetConfigListByGroupAndKey(String key, St
             if (!child.contains(nodeName)) {
                 continue;
             }
-            String childPath = parentNodePath + child;
+            String childPath;
+            if (parentNodePath.endsWith(String.valueOf(ZK_PATH_SEPARATOR))) {
+                childPath = parentNodePath + child;
+            } else {
+                childPath = parentNodePath + ZK_PATH_SEPARATOR + child;
+            }
             List<String> subChild = this.zkClient.getChildren(childPath, false);
             if (subChild == null || subChild.isEmpty()) {
                 continue;

sermant-backend/pom.xml

@@ -32,6 +32,7 @@
         <aspectjweaver.version>1.8.4</aspectjweaver.version>
         <tomcat-embed.version>9.0.86</tomcat-embed.version>
         <spring-framework.version>5.3.33</spring-framework.version>
+        <nacos-client-version>2.2.1</nacos-client-version>
         <webapp.path>${project.basedir}/src/main/webapp/frontend</webapp.path>
     </properties>
 
@@ -250,8 +251,35 @@
         <dependency>
             <groupId>io.sermant</groupId>
             <artifactId>sermant-agentcore-implement</artifactId>
+            <exclusions>
+                <exclusion>
+                    <groupId>io.envoyproxy.controlplane</groupId>
+                    <artifactId>api</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>io.grpc</groupId>
+                    <artifactId>grpc-stub</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>io.grpc</groupId>
+                    <artifactId>grpc-netty</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>io.grpc</groupId>
+                    <artifactId>grpc-protobuf</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>com.alibaba.nacos</groupId>
+                    <artifactId>nacos-client</artifactId>
+                </exclusion>
+            </exclusions>
             <version>${project.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.alibaba.nacos</groupId>
+            <artifactId>nacos-client</artifactId>
+            <version>${nacos-client-version}</version>
+        </dependency>
     </dependencies>
 
     <profiles>

sermant-backend/src/main/java/io/sermant/backend/service/ConfigService.java

@@ -250,7 +250,7 @@ private ConfigClient getConfigClient(String namespace) {
             return configClient;
         }
         ConfigClient client = CONFIG_CLIENT_MAP.get(namespace);
-        if (client == null || !client.isConnect()) {
+        if (client == null) {
             return createNacosClient(namespace);
         }
         return client;
@@ -326,7 +326,7 @@ public void reConnection() {
         }
         if (ConfigCenterType.NACOS.name().equals(dynamicConfig.getDynamicConfigType()) && !configClient.isConnect()) {
             for (Map.Entry<String, ConfigClient> entry : CONFIG_CLIENT_MAP.entrySet()) {
-                getConfigClient(entry.getKey());
+                createNacosClient(entry.getKey());
             }
         }
     }