attempt ordering of RibbonClients.defaultConfiguration's

ref gh-383

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/ribbon/RibbonClientConfigurationRegistrar.java

@@ -39,7 +39,7 @@ public class RibbonClientConfigurationRegistrar implements ImportBeanDefinitionR
 			AnnotationAttributes[] clients = (AnnotationAttributes[]) attrs.get("value");
 			for (AnnotationAttributes client : clients) {
 				registerClientConfiguration(registry, getClientName(client),
-						client.get("configuration"));
+						client.get("configuration"), 0);
 			}
 		}
 		if (attrs != null && attrs.containsKey("defaultConfiguration")) {
@@ -50,13 +50,13 @@ public class RibbonClientConfigurationRegistrar implements ImportBeanDefinitionR
 				name = "default." + metadata.getClassName();
 			}
 			registerClientConfiguration(registry, name,
-					attrs.get("defaultConfiguration"));
+					attrs.get("defaultConfiguration"), attrs.get("defaultConfigurationOrder"));
 		}
 		Map<String, Object> client = metadata.getAnnotationAttributes(
 				RibbonClient.class.getName(), true);
 		String name = getClientName(client);
 		if (name != null) {
-			registerClientConfiguration(registry, name, client.get("configuration"));
+			registerClientConfiguration(registry, name, client.get("configuration"), 0);
 		}
 	}
 
@@ -76,11 +76,12 @@ public class RibbonClientConfigurationRegistrar implements ImportBeanDefinitionR
 	}
 
 	private void registerClientConfiguration(BeanDefinitionRegistry registry,
-			Object name, Object configuration) {
+			Object name, Object configuration, Object order) {
 		BeanDefinitionBuilder builder = BeanDefinitionBuilder
 				.genericBeanDefinition(RibbonClientSpecification.class);
 		builder.addConstructorArgValue(name);
 		builder.addConstructorArgValue(configuration);
+		builder.addConstructorArgValue(order);
 		registry.registerBeanDefinition(name + ".RibbonClientSpecification",
 				builder.getBeanDefinition());
 	}

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/ribbon/RibbonClientSpecification.java

@@ -30,4 +30,10 @@ public class RibbonClientSpecification {
 
 	private Class<?>[] configuration;
 
+	private int order;
+
+	public Integer order() {
+		return order;
+	}
+
 }

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/ribbon/RibbonClients.java

@@ -42,4 +42,5 @@ public @interface RibbonClients {
 
 	Class<?>[] defaultConfiguration() default {};
 
+	int defaultConfigurationOrder() default 0;
 }

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/ribbon/SpringClientFactory.java

@@ -16,11 +16,14 @@
 
 package org.springframework.cloud.netflix.ribbon;
 
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.Comparator;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
+import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 
 import org.springframework.beans.BeanUtils;
@@ -125,8 +128,19 @@ public class SpringClientFactory implements DisposableBean, ApplicationContextAw
 				context.register(configuration);
 			}
 		}
-		for (Entry<String, RibbonClientSpecification> entry : this.configurations
-				.entrySet()) {
+
+		List<Entry<String, RibbonClientSpecification>> entries = new ArrayList<>(this.configurations
+				.entrySet());
+
+		Collections.sort(entries, new Comparator<Entry<String, RibbonClientSpecification>>() {
+			@Override
+			public int compare(Entry<String, RibbonClientSpecification> o1, Entry<String, RibbonClientSpecification> o2) {
+				return o1.getValue().order().compareTo(o2.getValue().order());
+			}
+		});
+
+
+		for (Entry<String, RibbonClientSpecification> entry : entries) {
 			if (entry.getKey().startsWith("default.")) {
 				for (Class<?> configuration : entry.getValue().getConfiguration()) {
 					context.register(configuration);