feat: support ephemeral

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

@@ -70,6 +70,10 @@ public class NacosConfigModifier implements PolarisConfigModifier {
 	 * nacos cluster.
 	 */
 	public static final String NACOS_CLUSTER = "nacos.cluster";
+	/**
+	 * nacos ephemeral.
+	 */
+	public static final String NACOS_EPHEMERAL = "nacos.ephemeral";
 	private static final Logger LOGGER = LoggerFactory.getLogger(NacosConfigModifier.class);
 	private static final String ID = "nacos";
 	private final NacosContextProperties nacosContextProperties;
@@ -143,6 +147,7 @@ public class NacosConfigModifier implements PolarisConfigModifier {
 		if (StringUtils.isNotBlank(nacosContextProperties.getServiceName())) {
 			metadata.put(NACOS_SERVICE, nacosContextProperties.getServiceName());
 		}
+		metadata.put(NACOS_EPHEMERAL, String.valueOf(nacosContextProperties.isEphemeral()));
 		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

@@ -60,6 +60,11 @@ public class NacosContextProperties {
 	 */
 	@Value("${spring.cloud.nacos.discovery.server-addr:}")
 	private String serverAddr;
+	/**
+	 * nacos discovery server address.
+	 */
+	@Value("${spring.cloud.nacos.discovery.ephemeral:false}")
+	private boolean ephemeral;
 
 	/**
 	 * the nacos authentication username.
@@ -177,7 +182,13 @@ public class NacosContextProperties {
 		this.namespace = namespace;
 	}
 
+	public boolean isEphemeral() {
+		return ephemeral;
+	}
 
+	public void setEphemeral(boolean ephemeral) {
+		this.ephemeral = ephemeral;
+	}
 	String getServiceName() {
 		return serviceName;
 	}

spring-cloud-starter-tencent-polaris-discovery/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -114,6 +114,12 @@
       "sourceType": "com.tencent.cloud.polaris.extend.nacos.NacosContextProperties",
       "defaultValue": false
     },
+    {
+      "name": "spring.cloud.nacos.discovery.ephemeral",
+      "type": "java.lang.Boolean",
+      "sourceType": "com.tencent.cloud.polaris.extend.nacos.NacosContextProperties",
+      "defaultValue": false
+    },
     {
       "name": "spring.cloud.nacos.discovery.group",
       "type": "java.lang.String",

spring-cloud-starter-tencent-polaris-router/src/main/java/com/tencent/cloud/polaris/router/config/properties/PolarisMetadataRouterProperties.java

@@ -17,7 +17,6 @@
 
 package com.tencent.cloud.polaris.router.config.properties;
 
-import com.tencent.polaris.api.rpc.MetadataFailoverType;
 import com.tencent.polaris.plugins.router.metadata.FailOverType;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;