feature:multi register support nacos.

spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/extend/nacos/NacosConfigModifier.java

@@ -20,6 +20,7 @@ package com.tencent.cloud.polaris.extend.nacos;
 
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.Map;
 import java.util.Objects;
 
 import com.tencent.cloud.common.constant.ContextConstant;
@@ -29,6 +30,7 @@ import com.tencent.polaris.factory.config.ConfigurationImpl;
 import com.tencent.polaris.factory.config.consumer.DiscoveryConfigImpl;
 import com.tencent.polaris.factory.config.global.ServerConnectorConfigImpl;
 import com.tencent.polaris.factory.config.provider.RegisterConfigImpl;
+import org.apache.commons.lang.StringUtils;
 
 import org.springframework.util.CollectionUtils;
 
@@ -39,7 +41,18 @@ import org.springframework.util.CollectionUtils;
  */
 public class NacosConfigModifier implements PolarisConfigModifier {
 	private static final String ID = "nacos";
-	private static final String ADDRESS_FORMAT = "%s:%s@%s";
+	/**
+	 * nacos username.
+	 */
+	public static final String USERNAME = "username";
+	/**
+	 * nacos password.
+	 */
+	public static final String PASSWORD = "password";
+	/**
+	 * nacos contextPath.
+	 */
+	public static final String CONTEXT_PATH = "contextPath";
 
 	private final NacosContextProperties nacosContextProperties;
 
@@ -61,11 +74,27 @@ public class NacosConfigModifier implements PolarisConfigModifier {
 		}
 		ServerConnectorConfigImpl serverConnectorConfig = new ServerConnectorConfigImpl();
 		serverConnectorConfig.setId(ID);
-		// Nacos Address URI: nacos:nacos@127.0.0.1:8848
+		if (StringUtils.isBlank(nacosContextProperties.getServerAddr())) {
-		String address = String.format(ADDRESS_FORMAT, nacosContextProperties.getUsername(), nacosContextProperties.getPassword(), nacosContextProperties.getServerAddr());
+			throw new IllegalArgumentException("nacos server addr must not be empty, please set it by" +
+					"spring.cloud.nacos.discovery.server-addr");
+		}
 		serverConnectorConfig.setAddresses(
-				Collections.singletonList(address));
+				Collections.singletonList(nacosContextProperties.getServerAddr()));
 		serverConnectorConfig.setProtocol(DefaultPlugins.SERVER_CONNECTOR_NACOS);
+
+		Map<String, String> metadata = serverConnectorConfig.getMetadata();
+		if (StringUtils.isNotBlank(nacosContextProperties.getUsername())) {
+			metadata.put(USERNAME, nacosContextProperties.getUsername());
+		}
+
+		if (StringUtils.isNotBlank(nacosContextProperties.getPassword())) {
+			metadata.put(PASSWORD, nacosContextProperties.getPassword());
+		}
+
+		if (StringUtils.isNotBlank(nacosContextProperties.getContextPath())) {
+			metadata.put(CONTEXT_PATH, nacosContextProperties.getContextPath());
+		}
+
 		configuration.getGlobal().getServerConnectors().add(serverConnectorConfig);
 		DiscoveryConfigImpl discoveryConfig = new DiscoveryConfigImpl();
 		discoveryConfig.setServerConnectorId(ID);

spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/extend/nacos/NacosContextProperties.java

@@ -81,6 +81,8 @@ public class NacosContextProperties {
 	@Value("${spring.cloud.nacos.discovery.group:DEFAULT_GROUP}")
 	private String group = DEFAULT_GROUP;
 
+	private String contextPath;
+
 	public boolean isEnabled() {
 		return enabled;
 	}
@@ -145,6 +147,14 @@ public class NacosContextProperties {
 		this.group = group;
 	}
 
+	public String getContextPath() {
+		return contextPath;
+	}
+
+	public void setContextPath(String contextPath) {
+		this.contextPath = contextPath;
+	}
+
 	@Override
 	public String toString() {
 		return "NacosContextProperties{" +
@@ -156,6 +166,7 @@ public class NacosContextProperties {
 				", password='" + password + '\'' +
 				", clusterName='" + clusterName + '\'' +
 				", group='" + group + '\'' +
+				", contextPath='" + contextPath + '\'' +
 				'}';
 	}
 }

spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisRegistration.java

@@ -48,7 +48,7 @@ public class PolarisRegistration implements Registration {
 	private static final String METADATA_KEY_IP = "internal-ip";
 	private static final String METADATA_KEY_ADDRESS = "internal-address";
 	private static final String GROUP_SERVER_ID_FORMAT = "%s__%s";
-	private static final String INTERNAL_NACOS_CLUSTER = "internal-nacos-cluster";
+	private static final String NACOS_CLUSTER = "nacos.cluster";
 
 	private final PolarisDiscoveryProperties polarisDiscoveryProperties;
 
@@ -135,7 +135,7 @@ public class PolarisRegistration implements Registration {
 			// put internal-nacos-cluster if necessary
 			String clusterName = nacosContextProperties.getClusterName();
 			if (StringUtils.isNotBlank(clusterName) && !DEFAULT_CLUSTER.equals(clusterName)) {
-				instanceMetadata.put(INTERNAL_NACOS_CLUSTER, clusterName);
+				instanceMetadata.put(NACOS_CLUSTER, clusterName);
 			}
 
 			instanceMetadata.putAll(staticMetadataManager.getMergedStaticMetadata());

spring-cloud-starter-tencent-polaris-discovery/src/test/java/com/tencent/cloud/polaris/extend/nacos/NacosContextPropertiesTest.java

@@ -19,6 +19,7 @@
 package com.tencent.cloud.polaris.extend.nacos;
 
 import java.util.List;
+import java.util.Map;
 import java.util.Optional;
 
 import com.tencent.polaris.api.config.plugin.DefaultPlugins;
@@ -73,11 +74,15 @@ public class NacosContextPropertiesTest {
 		).findAny();
 		assertThat(optionalServerConnectorConfig.isPresent()).isTrue();
 		ServerConnectorConfigImpl serverConnectorConfig = optionalServerConnectorConfig.get();
-		String address = String.format("%s:%s@%s", nacosContextProperties.getUsername(), nacosContextProperties.getPassword(), nacosContextProperties.getServerAddr());
 		if (!CollectionUtils.isEmpty(serverConnectorConfig.getAddresses())) {
-			assertThat(address.equals(serverConnectorConfig.getAddresses().get(0))).isTrue();
+			assertThat(nacosContextProperties.getServerAddr().equals(serverConnectorConfig.getAddresses().get(0))).isTrue();
 		}
 		assertThat(DefaultPlugins.SERVER_CONNECTOR_NACOS.equals(serverConnectorConfig.getProtocol())).isTrue();
+
+		Map<String, String> metadata = serverConnectorConfig.getMetadata();
+		assertThat(metadata.get(NacosConfigModifier.USERNAME)).isEqualTo(nacosContextProperties.getUsername());
+		assertThat(metadata.get(NacosConfigModifier.PASSWORD)).isEqualTo(nacosContextProperties.getPassword());
+		assertThat(metadata.get(NacosConfigModifier.CONTEXT_PATH)).isEqualTo(nacosContextProperties.getContextPath());
 	}
 
 	@SpringBootApplication

spring-cloud-starter-tencent-polaris-discovery/src/test/java/com/tencent/cloud/polaris/registry/PolarisRegistrationTest.java

@@ -149,6 +149,6 @@ public class PolarisRegistrationTest {
 		assertThat(metadata).isNotNull();
 		assertThat(metadata).isNotEmpty();
 		assertThat(metadata.size()).isEqualTo(4);
-		assertThat(metadata.get("internal-nacos-cluster")).isEqualTo(clusterName);
+		assertThat(metadata.get("nacos.cluster")).isEqualTo(clusterName);
 	}
 }

spring-cloud-starter-tencent-polaris-discovery/src/test/resources/application-test.yml

@@ -24,6 +24,7 @@ spring:
         prefer-ip-address: true
     nacos:
       enabled: true
+      context-path: /nacos
       discovery:
         enabled: true
         register-enabled: true

spring-cloud-tencent-examples/polaris-discovery-example/discovery-caller-service/src/main/resources/bootstrap.yml

@@ -43,6 +43,7 @@ spring:
 #        prefer-ip-address: true
 #    nacos:
 #      enabled: true
+#      context-path: /nacos
 #      discovery:
 #        enabled: true
 #        register-enabled: true
@@ -50,6 +51,7 @@ spring:
 #        server-addr: 127.0.0.1:8848
 #        username: nacos
 #        password: nacos
+#        cluster-name: polaris
 #eureka:
 #  client:
 #    serviceUrl: