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WebFluxEndpointManagementContextConfiguration.java
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WebFluxEndpointManagementContextConfiguration.java
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/*
* Copyright 2012-2022 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
*
* https://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.endpoint.web.reactive;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.boot.actuate.autoconfigure.endpoint.condition.ConditionalOnAvailableEndpoint;
import org.springframework.boot.actuate.autoconfigure.endpoint.expose.EndpointExposure;
import org.springframework.boot.actuate.autoconfigure.endpoint.web.CorsEndpointProperties;
import org.springframework.boot.actuate.autoconfigure.endpoint.web.WebEndpointProperties;
import org.springframework.boot.actuate.autoconfigure.web.ManagementContextConfiguration;
import org.springframework.boot.actuate.autoconfigure.web.server.ConditionalOnManagementPort;
import org.springframework.boot.actuate.autoconfigure.web.server.ManagementPortType;
import org.springframework.boot.actuate.endpoint.ExposableEndpoint;
import org.springframework.boot.actuate.endpoint.OperationResponseBody;
import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
import org.springframework.boot.actuate.endpoint.jackson.EndpointObjectMapper;
import org.springframework.boot.actuate.endpoint.web.EndpointLinksResolver;
import org.springframework.boot.actuate.endpoint.web.EndpointMapping;
import org.springframework.boot.actuate.endpoint.web.EndpointMediaTypes;
import org.springframework.boot.actuate.endpoint.web.ExposableWebEndpoint;
import org.springframework.boot.actuate.endpoint.web.WebEndpointsSupplier;
import org.springframework.boot.actuate.endpoint.web.WebServerNamespace;
import org.springframework.boot.actuate.endpoint.web.annotation.ControllerEndpointsSupplier;
import org.springframework.boot.actuate.endpoint.web.reactive.AdditionalHealthEndpointPathsWebFluxHandlerMapping;
import org.springframework.boot.actuate.endpoint.web.reactive.ControllerEndpointHandlerMapping;
import org.springframework.boot.actuate.endpoint.web.reactive.WebFluxEndpointHandlerMapping;
import org.springframework.boot.actuate.health.HealthEndpoint;
import org.springframework.boot.actuate.health.HealthEndpointGroups;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication.Type;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Role;
import org.springframework.core.codec.Encoder;
import org.springframework.core.env.Environment;
import org.springframework.http.MediaType;
import org.springframework.http.codec.EncoderHttpMessageWriter;
import org.springframework.http.codec.HttpMessageWriter;
import org.springframework.http.codec.ServerCodecConfigurer;
import org.springframework.http.codec.json.Jackson2JsonEncoder;
import org.springframework.http.server.reactive.HttpHandler;
import org.springframework.util.StringUtils;
import org.springframework.web.reactive.DispatcherHandler;
/**
* {@link ManagementContextConfiguration @ManagementContextConfiguration} for Reactive
* {@link Endpoint @Endpoint} concerns.
*
* @author Andy Wilkinson
* @author Phillip Webb
* @since 2.0.0
*/
@ManagementContextConfiguration(proxyBeanMethods = false)
@ConditionalOnWebApplication(type = Type.REACTIVE)
@ConditionalOnClass({ DispatcherHandler.class, HttpHandler.class })
@ConditionalOnBean(WebEndpointsSupplier.class)
@EnableConfigurationProperties(CorsEndpointProperties.class)
public class WebFluxEndpointManagementContextConfiguration {
@Bean
@ConditionalOnMissingBean
public WebFluxEndpointHandlerMapping webEndpointReactiveHandlerMapping(WebEndpointsSupplier webEndpointsSupplier,
ControllerEndpointsSupplier controllerEndpointsSupplier, EndpointMediaTypes endpointMediaTypes,
CorsEndpointProperties corsProperties, WebEndpointProperties webEndpointProperties,
Environment environment) {
String basePath = webEndpointProperties.getBasePath();
EndpointMapping endpointMapping = new EndpointMapping(basePath);
Collection<ExposableWebEndpoint> endpoints = webEndpointsSupplier.getEndpoints();
List<ExposableEndpoint<?>> allEndpoints = new ArrayList<>();
allEndpoints.addAll(endpoints);
allEndpoints.addAll(controllerEndpointsSupplier.getEndpoints());
return new WebFluxEndpointHandlerMapping(endpointMapping, endpoints, endpointMediaTypes,
corsProperties.toCorsConfiguration(), new EndpointLinksResolver(allEndpoints, basePath),
shouldRegisterLinksMapping(webEndpointProperties, environment, basePath));
}
private boolean shouldRegisterLinksMapping(WebEndpointProperties properties, Environment environment,
String basePath) {
return properties.getDiscovery().isEnabled() && (StringUtils.hasText(basePath)
|| ManagementPortType.get(environment).equals(ManagementPortType.DIFFERENT));
}
@Bean
@ConditionalOnManagementPort(ManagementPortType.DIFFERENT)
@ConditionalOnAvailableEndpoint(endpoint = HealthEndpoint.class, exposure = EndpointExposure.WEB)
@ConditionalOnBean(HealthEndpoint.class)
public AdditionalHealthEndpointPathsWebFluxHandlerMapping managementHealthEndpointWebFluxHandlerMapping(
WebEndpointsSupplier webEndpointsSupplier, HealthEndpointGroups groups) {
Collection<ExposableWebEndpoint> webEndpoints = webEndpointsSupplier.getEndpoints();
ExposableWebEndpoint health = webEndpoints.stream()
.filter((endpoint) -> endpoint.getEndpointId().equals(HealthEndpoint.ID)).findFirst().get();
return new AdditionalHealthEndpointPathsWebFluxHandlerMapping(new EndpointMapping(""), health,
groups.getAllWithAdditionalPath(WebServerNamespace.MANAGEMENT));
}
@Bean
@ConditionalOnMissingBean
public ControllerEndpointHandlerMapping controllerEndpointHandlerMapping(
ControllerEndpointsSupplier controllerEndpointsSupplier, CorsEndpointProperties corsProperties,
WebEndpointProperties webEndpointProperties) {
EndpointMapping endpointMapping = new EndpointMapping(webEndpointProperties.getBasePath());
return new ControllerEndpointHandlerMapping(endpointMapping, controllerEndpointsSupplier.getEndpoints(),
corsProperties.toCorsConfiguration());
}
@Bean
@ConditionalOnBean(EndpointObjectMapper.class)
@Role(BeanDefinition.ROLE_INFRASTRUCTURE)
static ServerCodecConfigurerEndpointObjectMapperBeanPostProcessor serverCodecConfigurerEndpointObjectMapperBeanPostProcessor(
EndpointObjectMapper endpointObjectMapper) {
return new ServerCodecConfigurerEndpointObjectMapperBeanPostProcessor(endpointObjectMapper);
}
/**
* {@link BeanPostProcessor} to apply {@link EndpointObjectMapper} for
* {@link OperationResponseBody} to {@link Jackson2JsonEncoder} instances.
*/
static class ServerCodecConfigurerEndpointObjectMapperBeanPostProcessor implements BeanPostProcessor {
private static final List<MediaType> MEDIA_TYPES = Collections
.unmodifiableList(Arrays.asList(MediaType.APPLICATION_JSON, new MediaType("application", "*+json")));
private final EndpointObjectMapper endpointObjectMapper;
ServerCodecConfigurerEndpointObjectMapperBeanPostProcessor(EndpointObjectMapper endpointObjectMapper) {
this.endpointObjectMapper = endpointObjectMapper;
}
@Override
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
if (bean instanceof ServerCodecConfigurer) {
process((ServerCodecConfigurer) bean);
}
return bean;
}
private void process(ServerCodecConfigurer configurer) {
for (HttpMessageWriter<?> writer : configurer.getWriters()) {
if (writer instanceof EncoderHttpMessageWriter) {
process(((EncoderHttpMessageWriter<?>) writer).getEncoder());
}
}
}
private void process(Encoder<?> encoder) {
if (encoder instanceof Jackson2JsonEncoder) {
Jackson2JsonEncoder jackson2JsonEncoder = (Jackson2JsonEncoder) encoder;
jackson2JsonEncoder.registerObjectMappersForType(OperationResponseBody.class, (associations) -> {
ObjectMapper objectMapper = this.endpointObjectMapper.get();
MEDIA_TYPES.forEach((mimeType) -> associations.put(mimeType, objectMapper));
});
}
}
}
}