Makes app.internal configurable.

spring-cloud-cloudfoundry-discovery/src/main/java/org/springframework/cloud/cloudfoundry/discovery/CloudFoundryDiscoveryClientConfiguration.java

@@ -42,7 +42,7 @@ public class CloudFoundryDiscoveryClientConfiguration {
 	@Bean
 	@ConditionalOnBean(CloudFoundryDiscoveryClient.class)
 	public CloudFoundryHeartbeatSender cloudFoundryHeartbeatSender(
-		CloudFoundryDiscoveryClient client) {
+			CloudFoundryDiscoveryClient client) {
 		return new CloudFoundryHeartbeatSender(client);
 	}
 
@@ -67,21 +67,22 @@ public class CloudFoundryDiscoveryClientConfiguration {
 		@ConditionalOnProperty(value = "spring.cloud.cloudfoundry.discovery.use-container-ip", havingValue = "true")
 		@ConditionalOnMissingBean(DiscoveryClient.class)
 		public SimpleDnsBasedDiscoveryClient discoveryClient(
-				ObjectProvider<ServiceIdToHostnameConverter> provider) {
+				ObjectProvider<ServiceIdToHostnameConverter> provider,
+				CloudFoundryDiscoveryProperties properties) {
 			ServiceIdToHostnameConverter converter = provider.getIfAvailable();
-			return converter == null ? new SimpleDnsBasedDiscoveryClient()
-					: new SimpleDnsBasedDiscoveryClient(converter);
+			return converter == null ? new SimpleDnsBasedDiscoveryClient(properties)
+					: new SimpleDnsBasedDiscoveryClient(properties, converter);
 		}
 
 		@Bean
 		@ConditionalOnProperty(value = "spring.cloud.cloudfoundry.discovery.use-container-ip", havingValue = "false", matchIfMissing = true)
 		@ConditionalOnMissingBean(DiscoveryClient.class)
-		public CloudFoundryAppServiceDiscoveryClient cloudFoundryDiscoveryClient(CloudFoundryOperations cf,
-				CloudFoundryService svc,
-				CloudFoundryDiscoveryProperties cloudFoundryDiscoveryProperties) {
-			return new CloudFoundryAppServiceDiscoveryClient(cf, svc,
-					cloudFoundryDiscoveryProperties);
+		public CloudFoundryAppServiceDiscoveryClient cloudFoundryDiscoveryClient(
+				CloudFoundryOperations cf, CloudFoundryService svc,
+				CloudFoundryDiscoveryProperties properties) {
+			return new CloudFoundryAppServiceDiscoveryClient(cf, svc, properties);
 		}
+
 	}
 
 }

spring-cloud-cloudfoundry-discovery/src/main/java/org/springframework/cloud/cloudfoundry/discovery/CloudFoundryDiscoveryProperties.java

@@ -17,6 +17,7 @@
 package org.springframework.cloud.cloudfoundry.discovery;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.core.style.ToStringCreator;
 
 /**
  * @author Josh Long
@@ -46,6 +47,11 @@ public class CloudFoundryDiscoveryProperties {
 	 */
 	private int order = 0;
 
+	/**
+	 * Default internal domain when configured to use Native DNS service discovery.
+	 */
+	private String internalDomain = "apps.internal";
+
 	public boolean isEnabled() {
 		return this.enabled;
 	}
@@ -78,12 +84,25 @@ public class CloudFoundryDiscoveryProperties {
 		this.order = order;
 	}
 
+	public String getInternalDomain() {
+		return this.internalDomain;
+	}
+
+	public void setInternalDomain(String internalDomain) {
+		this.internalDomain = internalDomain;
+	}
+
 	@Override
 	public String toString() {
-		return "CloudFoundryDiscoveryProperties{" + "enabled=" + this.enabled
-				+ ", heartbeatFrequency=" + this.heartbeatFrequency
-				+ ", defaultServerPort=" + this.defaultServerPort + ", order="
-				+ this.order + '}';
+		// @formatter:off
+		return new ToStringCreator(this)
+			.append("enabled", enabled)
+			.append("heartbeatFrequency", heartbeatFrequency)
+			.append("defaultServerPort", defaultServerPort)
+			.append("order", order)
+			.append("internalDomain", internalDomain)
+			.toString();
+		// @formatter:on
 	}
 
 }

spring-cloud-cloudfoundry-discovery/src/main/java/org/springframework/cloud/cloudfoundry/discovery/SimpleDnsBasedDiscoveryClient.java

@@ -34,27 +34,24 @@ import org.springframework.cloud.client.discovery.DiscoveryClient;
  * Discovery.
  *
  * @author Toshiaki Maki
- *
  * @see <a href=
  * "https://www.cloudfoundry.org/blog/polyglot-service-discovery-container-networking-cloud-foundry/">Polyglot
  * Service Discovery for Container Networking in Cloud Foundry</a>
  */
 public class SimpleDnsBasedDiscoveryClient implements DiscoveryClient {
-	public static final String INTERNAL_DOMAIN = "apps.internal";
-	private final Logger log = LoggerFactory
+
+	private static final Logger log = LoggerFactory
 			.getLogger(SimpleDnsBasedDiscoveryClient.class);
+
 	private final ServiceIdToHostnameConverter serviceIdToHostnameConverter;
 
-	private static final ServiceIdToHostnameConverter DEFAULT_CONVERTER = serviceId -> serviceId
-			+ "." + INTERNAL_DOMAIN;
-
-	public SimpleDnsBasedDiscoveryClient(
+	public SimpleDnsBasedDiscoveryClient(CloudFoundryDiscoveryProperties properties,
 			ServiceIdToHostnameConverter serviceIdToHostnameConverter) {
 		this.serviceIdToHostnameConverter = serviceIdToHostnameConverter;
 	}
 
-	public SimpleDnsBasedDiscoveryClient() {
-		this(DEFAULT_CONVERTER);
+	public SimpleDnsBasedDiscoveryClient(CloudFoundryDiscoveryProperties properties) {
+		this(properties, serviceId -> serviceId + "." + properties.getInternalDomain());
 	}
 
 	@Override
@@ -91,6 +88,9 @@ public class SimpleDnsBasedDiscoveryClient implements DiscoveryClient {
 
 	@FunctionalInterface
 	public interface ServiceIdToHostnameConverter {
+
 		String toHostname(String serviceId);
+
 	}
+
 }