001/* 002 * Copyright 2012-2018 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.boot.actuate.autoconfigure.cloudfoundry; 018 019import java.util.Collection; 020import java.util.List; 021 022import org.springframework.boot.actuate.endpoint.EndpointFilter; 023import org.springframework.boot.actuate.endpoint.invoke.OperationInvokerAdvisor; 024import org.springframework.boot.actuate.endpoint.invoke.ParameterValueMapper; 025import org.springframework.boot.actuate.endpoint.web.EndpointMediaTypes; 026import org.springframework.boot.actuate.endpoint.web.ExposableWebEndpoint; 027import org.springframework.boot.actuate.endpoint.web.PathMapper; 028import org.springframework.boot.actuate.endpoint.web.annotation.EndpointWebExtension; 029import org.springframework.boot.actuate.endpoint.web.annotation.WebEndpointDiscoverer; 030import org.springframework.boot.actuate.health.HealthEndpoint; 031import org.springframework.context.ApplicationContext; 032import org.springframework.core.annotation.AnnotatedElementUtils; 033import org.springframework.core.annotation.AnnotationAttributes; 034 035/** 036 * {@link WebEndpointDiscoverer} for Cloud Foundry that uses Cloud Foundry specific 037 * extensions for the {@link HealthEndpoint}. 038 * 039 * @author Madhura Bhave 040 * @since 2.0.0 041 */ 042public class CloudFoundryWebEndpointDiscoverer extends WebEndpointDiscoverer { 043 044 /** 045 * Create a new {@link WebEndpointDiscoverer} instance. 046 * @param applicationContext the source application context 047 * @param parameterValueMapper the parameter value mapper 048 * @param endpointMediaTypes the endpoint media types 049 * @param endpointPathMappers the endpoint path mappers 050 * @param invokerAdvisors invoker advisors to apply 051 * @param filters filters to apply 052 */ 053 public CloudFoundryWebEndpointDiscoverer(ApplicationContext applicationContext, 054 ParameterValueMapper parameterValueMapper, 055 EndpointMediaTypes endpointMediaTypes, List<PathMapper> endpointPathMappers, 056 Collection<OperationInvokerAdvisor> invokerAdvisors, 057 Collection<EndpointFilter<ExposableWebEndpoint>> filters) { 058 super(applicationContext, parameterValueMapper, endpointMediaTypes, 059 endpointPathMappers, invokerAdvisors, filters); 060 } 061 062 @Override 063 protected boolean isExtensionExposed(Object extensionBean) { 064 if (isHealthEndpointExtension(extensionBean) 065 && !isCloudFoundryHealthEndpointExtension(extensionBean)) { 066 // Filter regular health endpoint extensions so a CF version can replace them 067 return false; 068 } 069 return true; 070 } 071 072 private boolean isHealthEndpointExtension(Object extensionBean) { 073 AnnotationAttributes attributes = AnnotatedElementUtils 074 .getMergedAnnotationAttributes(extensionBean.getClass(), 075 EndpointWebExtension.class); 076 Class<?> endpoint = (attributes != null) ? attributes.getClass("endpoint") : null; 077 return (endpoint != null && HealthEndpoint.class.isAssignableFrom(endpoint)); 078 } 079 080 private boolean isCloudFoundryHealthEndpointExtension(Object extensionBean) { 081 return AnnotatedElementUtils.hasAnnotation(extensionBean.getClass(), 082 HealthEndpointCloudFoundryExtension.class); 083 } 084 085}