add modify nacos instance status

spring-cloud-alibaba-nacos-discovery/src/main/java/org/springframework/cloud/alibaba/nacos/NacosDiscoveryProperties.java

@@ -17,8 +17,11 @@
 package org.springframework.cloud.alibaba.nacos;
 
 import com.alibaba.nacos.api.NacosFactory;
+import com.alibaba.nacos.api.naming.NamingMaintainFactory;
+import com.alibaba.nacos.api.naming.NamingMaintainService;
 import com.alibaba.nacos.api.naming.NamingService;
 import com.alibaba.nacos.api.naming.PreservedMetadataKeys;
+import com.alibaba.nacos.client.naming.NacosNamingMaintainService;
 import com.alibaba.nacos.client.naming.utils.UtilAndComs;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -147,6 +150,8 @@ public class NacosDiscoveryProperties {
 
 	private NamingService namingService;
 
+	private NamingMaintainService namingMaintainService;
+
 	@PostConstruct
 	public void init() throws SocketException {
 
@@ -389,6 +394,34 @@ public class NacosDiscoveryProperties {
 			return namingService;
 		}
 
+		try {
+			namingService = NacosFactory.createNamingService(getNacosProperties());
+		}
+		catch (Exception e) {
+			log.error("create naming service error!properties={},e=,", this, e);
+			return null;
+		}
+		return namingService;
+	}
+
+	public NamingMaintainService namingMaintainServiceInstance() {
+
+		if (null != namingMaintainService) {
+			return namingMaintainService;
+		}
+
+		try {
+			namingMaintainService = NamingMaintainFactory
+					.createMaintainService(getNacosProperties());
+		}
+		catch (Exception e) {
+			log.error("create naming service error!properties={},e=,", this, e);
+			return null;
+		}
+		return namingMaintainService;
+	}
+
+	private Properties getNacosProperties() {
 		Properties properties = new Properties();
 		properties.put(SERVER_ADDR, serverAddr);
 		properties.put(NAMESPACE, namespace);
@@ -407,15 +440,7 @@ public class NacosDiscoveryProperties {
 		properties.put(SECRET_KEY, secretKey);
 		properties.put(CLUSTER_NAME, clusterName);
 		properties.put(NAMING_LOAD_CACHE_AT_START, namingLoadCacheAtStart);
-
+		return properties;
-		try {
-			namingService = NacosFactory.createNamingService(properties);
-		}
-		catch (Exception e) {
-			log.error("create naming service error!properties={},e=,", this, e);
-			return null;
-		}
-		return namingService;
 	}
 
 }

spring-cloud-alibaba-nacos-discovery/src/main/java/org/springframework/cloud/alibaba/nacos/registry/NacosServiceRegistry.java

@@ -16,6 +16,8 @@
 
 package org.springframework.cloud.alibaba.nacos.registry;
 
+import java.util.List;
+
 import com.alibaba.nacos.api.naming.NamingService;
 import com.alibaba.nacos.api.naming.pojo.Instance;
 import org.slf4j.Logger;
@@ -52,12 +54,7 @@ public class NacosServiceRegistry implements ServiceRegistry<Registration> {
 
 		String serviceId = registration.getServiceId();
 
-		Instance instance = new Instance();
+		Instance instance = getNacosInstanceFromRegistration(registration);
-		instance.setIp(registration.getHost());
-		instance.setPort(registration.getPort());
-		instance.setWeight(nacosDiscoveryProperties.getWeight());
-		instance.setClusterName(nacosDiscoveryProperties.getClusterName());
-		instance.setMetadata(registration.getMetadata());
 
 		try {
 			namingService.registerInstance(serviceId, instance);
@@ -102,13 +99,60 @@ public class NacosServiceRegistry implements ServiceRegistry<Registration> {
 
 	@Override
 	public void setStatus(Registration registration, String status) {
-		// nacos doesn't support set status of a particular registration.
+
+		if (!status.equalsIgnoreCase("UP") && !status.equalsIgnoreCase("DOWN")) {
+			log.warn("can't support status {},please choose UP or DOWN", status);
+			return;
+		}
+
+		String serviceId = registration.getServiceId();
+
+		Instance instance = getNacosInstanceFromRegistration(registration);
+
+		if (status.equalsIgnoreCase("DOWN")) {
+			instance.setEnabled(false);
+		}
+		else {
+			instance.setEnabled(true);
+		}
+
+		try {
+			nacosDiscoveryProperties.namingMaintainServiceInstance()
+					.updateInstance(serviceId, instance);
+		}
+		catch (Exception e) {
+			throw new RuntimeException("update nacos instance status fail", e);
+		}
+
 	}
 
 	@Override
-	public <T> T getStatus(Registration registration) {
+	public Object getStatus(Registration registration) {
-		// nacos doesn't support query status of a particular registration.
+
+		String serviceName = registration.getServiceId();
+		try {
+			List<Instance> instances = nacosDiscoveryProperties.namingServiceInstance()
+					.getAllInstances(serviceName);
+			for (Instance instance : instances) {
+				if (instance.getIp().equalsIgnoreCase(nacosDiscoveryProperties.getIp())
+						&& instance.getPort() == nacosDiscoveryProperties.getPort())
+					return instance.isEnabled() ? "UP" : "DOWN";
+			}
+		}
+		catch (Exception e) {
+			log.error("get all instance of {} error,", serviceName, e);
+		}
 		return null;
 	}
 
+	private Instance getNacosInstanceFromRegistration(Registration registration) {
+		Instance instance = new Instance();
+		instance.setIp(registration.getHost());
+		instance.setPort(registration.getPort());
+		instance.setWeight(nacosDiscoveryProperties.getWeight());
+		instance.setClusterName(nacosDiscoveryProperties.getClusterName());
+		instance.setMetadata(registration.getMetadata());
+		return instance;
+	}
+
 }