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org.springframework.boot.actuate.autoconfigure.cloudfoundry.reactive.ReactiveCloudFoundryActuatorAutoConfiguration Maven / Gradle / Ivy
/*
* Copyright 2012-2024 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.cloudfoundry.reactive;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.function.Supplier;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.boot.actuate.autoconfigure.cloudfoundry.CloudFoundryWebEndpointDiscoverer;
import org.springframework.boot.actuate.autoconfigure.cloudfoundry.servlet.CloudFoundryInfoEndpointWebExtension;
import org.springframework.boot.actuate.autoconfigure.endpoint.condition.ConditionalOnAvailableEndpoint;
import org.springframework.boot.actuate.autoconfigure.health.HealthEndpointAutoConfiguration;
import org.springframework.boot.actuate.autoconfigure.info.InfoEndpointAutoConfiguration;
import org.springframework.boot.actuate.endpoint.ExposableEndpoint;
import org.springframework.boot.actuate.endpoint.invoke.ParameterValueMapper;
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.PathMappedEndpoints;
import org.springframework.boot.actuate.health.HealthEndpoint;
import org.springframework.boot.actuate.health.ReactiveHealthEndpointWebExtension;
import org.springframework.boot.actuate.info.GitInfoContributor;
import org.springframework.boot.actuate.info.InfoContributor;
import org.springframework.boot.actuate.info.InfoEndpoint;
import org.springframework.boot.actuate.info.InfoPropertiesInfoContributor;
import org.springframework.boot.autoconfigure.AutoConfiguration;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnCloudPlatform;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.cloud.CloudPlatform;
import org.springframework.boot.info.GitProperties;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.security.web.server.MatcherSecurityWebFilterChain;
import org.springframework.security.web.server.WebFilterChainProxy;
import org.springframework.security.web.server.util.matcher.ServerWebExchangeMatcher;
import org.springframework.security.web.server.util.matcher.ServerWebExchangeMatchers;
import org.springframework.util.function.SingletonSupplier;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.reactive.function.client.WebClient;
import org.springframework.web.server.WebFilter;
/**
* {@link EnableAutoConfiguration Auto-configuration} to expose actuator endpoints for
* Cloud Foundry to use in a reactive environment.
*
* @author Madhura Bhave
* @since 2.0.0
*/
@AutoConfiguration(after = { HealthEndpointAutoConfiguration.class, InfoEndpointAutoConfiguration.class })
@ConditionalOnProperty(prefix = "management.cloudfoundry", name = "enabled", matchIfMissing = true)
@ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.REACTIVE)
@ConditionalOnCloudPlatform(CloudPlatform.CLOUD_FOUNDRY)
public class ReactiveCloudFoundryActuatorAutoConfiguration {
private static final String BASE_PATH = "/cloudfoundryapplication";
@Bean
@ConditionalOnMissingBean
@ConditionalOnAvailableEndpoint
@ConditionalOnBean({ HealthEndpoint.class, ReactiveHealthEndpointWebExtension.class })
public CloudFoundryReactiveHealthEndpointWebExtension cloudFoundryReactiveHealthEndpointWebExtension(
ReactiveHealthEndpointWebExtension reactiveHealthEndpointWebExtension) {
return new CloudFoundryReactiveHealthEndpointWebExtension(reactiveHealthEndpointWebExtension);
}
@Bean
@ConditionalOnMissingBean
@ConditionalOnAvailableEndpoint
@ConditionalOnBean({ InfoEndpoint.class, GitProperties.class })
public CloudFoundryInfoEndpointWebExtension cloudFoundryInfoEndpointWebExtension(GitProperties properties,
ObjectProvider infoContributors) {
List contributors = infoContributors.orderedStream()
.map((infoContributor) -> (infoContributor instanceof GitInfoContributor)
? new GitInfoContributor(properties, InfoPropertiesInfoContributor.Mode.FULL) : infoContributor)
.toList();
return new CloudFoundryInfoEndpointWebExtension(new InfoEndpoint(contributors));
}
@Bean
@SuppressWarnings("removal")
public CloudFoundryWebFluxEndpointHandlerMapping cloudFoundryWebFluxEndpointHandlerMapping(
ParameterValueMapper parameterMapper, EndpointMediaTypes endpointMediaTypes,
WebClient.Builder webClientBuilder,
org.springframework.boot.actuate.endpoint.web.annotation.ControllerEndpointsSupplier controllerEndpointsSupplier,
ApplicationContext applicationContext) {
CloudFoundryWebEndpointDiscoverer endpointDiscoverer = new CloudFoundryWebEndpointDiscoverer(applicationContext,
parameterMapper, endpointMediaTypes, null, Collections.emptyList(), Collections.emptyList());
CloudFoundrySecurityInterceptor securityInterceptor = getSecurityInterceptor(webClientBuilder,
applicationContext.getEnvironment());
Collection webEndpoints = endpointDiscoverer.getEndpoints();
List> allEndpoints = new ArrayList<>();
allEndpoints.addAll(webEndpoints);
allEndpoints.addAll(controllerEndpointsSupplier.getEndpoints());
return new CloudFoundryWebFluxEndpointHandlerMapping(new EndpointMapping(BASE_PATH), webEndpoints,
endpointMediaTypes, getCorsConfiguration(), securityInterceptor, allEndpoints);
}
private CloudFoundrySecurityInterceptor getSecurityInterceptor(WebClient.Builder webClientBuilder,
Environment environment) {
ReactiveCloudFoundrySecurityService cloudfoundrySecurityService = getCloudFoundrySecurityService(
webClientBuilder, environment);
ReactiveTokenValidator tokenValidator = new ReactiveTokenValidator(cloudfoundrySecurityService);
return new CloudFoundrySecurityInterceptor(tokenValidator, cloudfoundrySecurityService,
environment.getProperty("vcap.application.application_id"));
}
private ReactiveCloudFoundrySecurityService getCloudFoundrySecurityService(WebClient.Builder webClientBuilder,
Environment environment) {
String cloudControllerUrl = environment.getProperty("vcap.application.cf_api");
boolean skipSslValidation = environment.getProperty("management.cloudfoundry.skip-ssl-validation",
Boolean.class, false);
return (cloudControllerUrl != null)
? new ReactiveCloudFoundrySecurityService(webClientBuilder, cloudControllerUrl, skipSslValidation)
: null;
}
private CorsConfiguration getCorsConfiguration() {
CorsConfiguration corsConfiguration = new CorsConfiguration();
corsConfiguration.addAllowedOrigin(CorsConfiguration.ALL);
corsConfiguration.setAllowedMethods(Arrays.asList(HttpMethod.GET.name(), HttpMethod.POST.name()));
corsConfiguration
.setAllowedHeaders(Arrays.asList(HttpHeaders.AUTHORIZATION, "X-Cf-App-Instance", HttpHeaders.CONTENT_TYPE));
return corsConfiguration;
}
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass(MatcherSecurityWebFilterChain.class)
static class IgnoredPathsSecurityConfiguration {
@Bean
static WebFilterChainPostProcessor webFilterChainPostProcessor(
ObjectProvider handlerMapping) {
return new WebFilterChainPostProcessor(handlerMapping);
}
}
static class WebFilterChainPostProcessor implements BeanPostProcessor {
private final Supplier pathMappedEndpoints;
WebFilterChainPostProcessor(ObjectProvider handlerMapping) {
this.pathMappedEndpoints = SingletonSupplier
.of(() -> new PathMappedEndpoints(BASE_PATH, () -> handlerMapping.getObject().getAllEndpoints()));
}
@Override
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
if (bean instanceof WebFilterChainProxy webFilterChainProxy) {
return postProcess(webFilterChainProxy);
}
return bean;
}
private WebFilterChainProxy postProcess(WebFilterChainProxy existing) {
List paths = getPaths(this.pathMappedEndpoints.get());
ServerWebExchangeMatcher cloudFoundryRequestMatcher = ServerWebExchangeMatchers
.pathMatchers(paths.toArray(new String[] {}));
WebFilter noOpFilter = (exchange, chain) -> chain.filter(exchange);
MatcherSecurityWebFilterChain ignoredRequestFilterChain = new MatcherSecurityWebFilterChain(
cloudFoundryRequestMatcher, Collections.singletonList(noOpFilter));
MatcherSecurityWebFilterChain allRequestsFilterChain = new MatcherSecurityWebFilterChain(
ServerWebExchangeMatchers.anyExchange(), Collections.singletonList(existing));
return new WebFilterChainProxy(ignoredRequestFilterChain, allRequestsFilterChain);
}
private static List getPaths(PathMappedEndpoints pathMappedEndpoints) {
List paths = new ArrayList<>();
pathMappedEndpoints.getAllPaths().forEach((path) -> paths.add(path + "/**"));
paths.add(BASE_PATH);
paths.add(BASE_PATH + "/");
return paths;
}
}
}