Create CloudFoundry-specific EndpointWebExtension

Closes gh-11428

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/cloudfoundry/CloudFoundryEndpointFilter.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -27,10 +27,11 @@ import org.springframework.boot.actuate.endpoint.web.WebOperation;
  *
  * @author Madhura Bhave
  */
-public class CloudFoundryEndpointFilter implements EndpointFilter<WebOperation> {
+class CloudFoundryEndpointFilter implements EndpointFilter<WebOperation> {
 
 	@Override
-	public boolean match(EndpointInfo<WebOperation> info, EndpointDiscoverer<WebOperation> discoverer) {
+	public boolean match(EndpointInfo<WebOperation> info,
+			EndpointDiscoverer<WebOperation> discoverer) {
 		return (discoverer instanceof CloudFoundryWebAnnotationEndpointDiscoverer);
 	}
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/cloudfoundry/CloudFoundryEndpointWebExtension.java

+/*
+ * Copyright 2012-2018 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.cloudfoundry;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
+import org.springframework.boot.actuate.endpoint.annotation.EndpointExtension;
+import org.springframework.core.annotation.AliasFor;
+
+/**
+ * Identifies a type as being a CloudFoundry-specific extension of an {@link Endpoint}.
+ *
+ * @author Stephane Nicoll
+ * @since 2.0.0
+ */
+@Target(ElementType.TYPE)
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+@EndpointExtension(filter = CloudFoundryEndpointFilter.class)
+public @interface CloudFoundryEndpointWebExtension {
+
+	/**
+	 * The {@link Endpoint endpoint} class to which this Web extension relates.
+	 * @return the endpoint class
+	 */
+	@AliasFor(annotation = EndpointExtension.class)
+	Class<?> endpoint();
+
+}

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/cloudfoundry/reactive/CloudFoundryReactiveHealthEndpointWebExtension.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -18,7 +18,7 @@ package org.springframework.boot.actuate.autoconfigure.cloudfoundry.reactive;
 
 import reactor.core.publisher.Mono;
 
-import org.springframework.boot.actuate.autoconfigure.cloudfoundry.CloudFoundryEndpointFilter;
+import org.springframework.boot.actuate.autoconfigure.cloudfoundry.CloudFoundryEndpointWebExtension;
 import org.springframework.boot.actuate.endpoint.annotation.EndpointExtension;
 import org.springframework.boot.actuate.endpoint.annotation.ReadOperation;
 import org.springframework.boot.actuate.endpoint.web.WebEndpointResponse;
@@ -33,7 +33,7 @@ import org.springframework.boot.actuate.health.ReactiveHealthEndpointWebExtensio
  * @author Madhura Bhave
  * @since 2.0.0
  */
-@EndpointExtension(filter = CloudFoundryEndpointFilter.class, endpoint = HealthEndpoint.class)
+@CloudFoundryEndpointWebExtension(endpoint = HealthEndpoint.class)
 public class CloudFoundryReactiveHealthEndpointWebExtension {
 
 	private final ReactiveHealthEndpointWebExtension delegate;

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/cloudfoundry/servlet/CloudFoundryHealthEndpointWebExtension.java

 /*
- * Copyright 2012-2017 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -16,7 +16,7 @@
 
 package org.springframework.boot.actuate.autoconfigure.cloudfoundry.servlet;
 
-import org.springframework.boot.actuate.autoconfigure.cloudfoundry.CloudFoundryEndpointFilter;
+import org.springframework.boot.actuate.autoconfigure.cloudfoundry.CloudFoundryEndpointWebExtension;
 import org.springframework.boot.actuate.endpoint.annotation.EndpointExtension;
 import org.springframework.boot.actuate.endpoint.annotation.ReadOperation;
 import org.springframework.boot.actuate.endpoint.web.WebEndpointResponse;
@@ -31,7 +31,7 @@ import org.springframework.boot.actuate.health.HealthEndpointWebExtension;
  * @author Madhura Bhave
  * @since 2.0.0
  */
-@EndpointExtension(filter = CloudFoundryEndpointFilter.class, endpoint = HealthEndpoint.class)
+@CloudFoundryEndpointWebExtension(endpoint = HealthEndpoint.class)
 public class CloudFoundryHealthEndpointWebExtension {
 
 	private final HealthEndpointWebExtension delegate;