Get dynamic instanceinfo in ServiceRegistry.getStatus()

spring-cloud-netflix-eureka-client/src/main/java/org/springframework/cloud/netflix/eureka/CloudEurekaClient.java

 /*
- * Copyright 2013-2015 the original author or authors.
+ * Copyright 2013-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,6 +24,7 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.springframework.cloud.client.discovery.event.HeartbeatEvent;
 import org.springframework.context.ApplicationEventPublisher;
+import org.springframework.http.HttpStatus;
 import org.springframework.util.ReflectionUtils;
 
 import com.netflix.appinfo.ApplicationInfoManager;
@@ -33,6 +34,7 @@ import com.netflix.discovery.AbstractDiscoveryClientOptionalArgs;
 import com.netflix.discovery.DiscoveryClient;
 import com.netflix.discovery.EurekaClientConfig;
 import com.netflix.discovery.shared.transport.EurekaHttpClient;
+import com.netflix.discovery.shared.transport.EurekaHttpResponse;
 
 /**
  * Subclass of {@link DiscoveryClient} that sends a {@link HeartbeatEvent} when
@@ -73,6 +75,15 @@ public class CloudEurekaClient extends DiscoveryClient {
 		getEurekaHttpClient().deleteStatusOverride(info.getAppName(), info.getId(), info);
 	}
 
+	public InstanceInfo getInstanceInfo(String appname, String instanceId) {
+		EurekaHttpResponse<InstanceInfo> response = getEurekaHttpClient().getInstance(appname, instanceId);
+		HttpStatus httpStatus = HttpStatus.valueOf(response.getStatusCode());
+		if (httpStatus.is2xxSuccessful() && response.getEntity() != null) {
+			return response.getEntity();
+		}
+		return null;
+	}
+
 	EurekaHttpClient getEurekaHttpClient() {
 		if (this.eurekaHttpClient.get() == null) {
 			try {

spring-cloud-netflix-eureka-client/src/main/java/org/springframework/cloud/netflix/eureka/serviceregistry/EurekaServiceRegistry.java

 /*
- * Copyright 2013-2016 the original author or authors.
+ * Copyright 2013-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -25,6 +25,8 @@ import org.springframework.cloud.client.serviceregistry.ServiceRegistry;
 
 import com.netflix.appinfo.InstanceInfo;
 
+import static com.netflix.appinfo.InstanceInfo.InstanceStatus.UNKNOWN;
+
 /**
  * @author Spencer Gibb
  */
@@ -89,11 +91,17 @@ public class EurekaServiceRegistry implements ServiceRegistry<EurekaRegistration
 
 	@Override
 	public Object getStatus(EurekaRegistration registration) {
-		HashMap<String, Object> status = new HashMap<>();
+		String appname = registration.getInstanceConfig().getAppname();
+		String instanceId = registration.getInstanceConfig().getInstanceId();
+		InstanceInfo info = registration.getEurekaClient().getInstanceInfo(appname, instanceId);
 
-		InstanceInfo info = registration.getApplicationInfoManager().getInfo();
-		status.put("status", info.getStatus().toString());
-		status.put("overriddenStatus", info.getOverriddenStatus().toString());
+		HashMap<String, Object> status = new HashMap<>();
+		if (info != null) {
+			status.put("status", info.getStatus().toString());
+			status.put("overriddenStatus", info.getOverriddenStatus().toString());
+		} else {
+			status.put("status", UNKNOWN.toString());
+		}
 
 		return status;
 	}

spring-cloud-netflix-eureka-client/src/test/java/org/springframework/cloud/netflix/eureka/serviceregistry/EurekaServiceRegistryTests.java

 /*
- * Copyright 2013-2017 the original author or authors.
+ * Copyright 2013-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +17,8 @@
 
 package org.springframework.cloud.netflix.eureka.serviceregistry;
 
+import java.util.Map;
+
 import org.junit.Test;
 import org.springframework.cloud.commons.util.InetUtils;
 import org.springframework.cloud.commons.util.InetUtilsProperties;
@@ -28,6 +30,9 @@ import org.springframework.context.ApplicationEventPublisher;
 import com.netflix.appinfo.ApplicationInfoManager;
 import com.netflix.appinfo.InstanceInfo;
 
+import static com.netflix.appinfo.InstanceInfo.InstanceStatus.DOWN;
+import static com.netflix.appinfo.InstanceInfo.InstanceStatus.UNKNOWN;
+import static org.assertj.core.api.Assertions.assertThat;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.verifyZeroInteractions;
 import static org.mockito.Mockito.when;
@@ -57,4 +62,69 @@ public class EurekaServiceRegistryTests {
 		verifyZeroInteractions(eurekaClient);
 	}
 
+	@Test
+	public void eurekaClientGetStatus() {
+		EurekaServiceRegistry registry = new EurekaServiceRegistry();
+
+		EurekaInstanceConfigBean config = new EurekaInstanceConfigBean(new InetUtils(new InetUtilsProperties()));
+		config.setAppname("myapp");
+		config.setInstanceId("1234");
+
+		CloudEurekaClient eurekaClient = mock(CloudEurekaClient.class);
+
+		InstanceInfo instanceInfo = InstanceInfo.Builder.newBuilder()
+				.setAppName("myapp")
+				.setInstanceId("1234")
+				.setStatus(DOWN)
+				.setOverriddenStatus(UNKNOWN)
+				.build();
+		when(eurekaClient.getInstanceInfo("myapp", "1234"))
+				.thenReturn(instanceInfo);
+
+		EurekaRegistration registration = EurekaRegistration.builder(config)
+				.with(eurekaClient)
+				.with(mock(ApplicationInfoManager.class))
+				.with(new EurekaClientConfigBean(), mock(ApplicationEventPublisher.class))
+				.build();
+
+		Object status = registry.getStatus(registration);
+
+		assertThat(status).isInstanceOf(Map.class);
+
+		Map<Object, Object> map = (Map<Object, Object>) status;
+
+		assertThat(map).hasSize(2)
+				.containsEntry("status", DOWN.toString())
+				.containsEntry("overriddenStatus", UNKNOWN.toString());
+	}
+
+
+	@Test
+	public void eurekaClientGetStatusNoInstance() {
+		EurekaServiceRegistry registry = new EurekaServiceRegistry();
+
+		EurekaInstanceConfigBean config = new EurekaInstanceConfigBean(new InetUtils(new InetUtilsProperties()));
+		config.setAppname("myapp");
+		config.setInstanceId("1234");
+
+		CloudEurekaClient eurekaClient = mock(CloudEurekaClient.class);
+
+		when(eurekaClient.getInstanceInfo("myapp", "1234"))
+				.thenReturn(null);
+
+		EurekaRegistration registration = EurekaRegistration.builder(config)
+				.with(eurekaClient)
+				.with(mock(ApplicationInfoManager.class))
+				.with(new EurekaClientConfigBean(), mock(ApplicationEventPublisher.class))
+				.build();
+
+		Object status = registry.getStatus(registration);
+
+		assertThat(status).isInstanceOf(Map.class);
+
+		Map<Object, Object> map = (Map<Object, Object>) status;
+
+		assertThat(map).hasSize(1)
+				.containsEntry("status", UNKNOWN.toString());
+	}
 }