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Spring Boot Actuator AutoConfigure
/*
* Copyright 2012-2020 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.metrics.web.servlet;
import java.util.stream.Collectors;
import javax.servlet.DispatcherType;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.config.MeterFilter;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.boot.actuate.autoconfigure.metrics.MetricsAutoConfiguration;
import org.springframework.boot.actuate.autoconfigure.metrics.MetricsProperties;
import org.springframework.boot.actuate.autoconfigure.metrics.MetricsProperties.Web.Server.ServerRequest;
import org.springframework.boot.actuate.autoconfigure.metrics.OnlyOnceLoggingDenyMeterFilter;
import org.springframework.boot.actuate.autoconfigure.metrics.export.simple.SimpleMetricsExportAutoConfiguration;
import org.springframework.boot.actuate.metrics.web.servlet.DefaultWebMvcTagsProvider;
import org.springframework.boot.actuate.metrics.web.servlet.LongTaskTimingHandlerInterceptor;
import org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter;
import org.springframework.boot.actuate.metrics.web.servlet.WebMvcTagsContributor;
import org.springframework.boot.actuate.metrics.web.servlet.WebMvcTagsProvider;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
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.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.web.servlet.DispatcherServlet;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
/**
* {@link EnableAutoConfiguration Auto-configuration} for instrumentation of Spring Web
* MVC servlet-based request mappings.
*
* @author Jon Schneider
* @author Dmytro Nosan
* @since 2.0.0
*/
@Configuration(proxyBeanMethods = false)
@AutoConfigureAfter({ MetricsAutoConfiguration.class, SimpleMetricsExportAutoConfiguration.class })
@ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.SERVLET)
@ConditionalOnClass(DispatcherServlet.class)
@ConditionalOnBean(MeterRegistry.class)
@EnableConfigurationProperties(MetricsProperties.class)
public class WebMvcMetricsAutoConfiguration {
private final MetricsProperties properties;
public WebMvcMetricsAutoConfiguration(MetricsProperties properties) {
this.properties = properties;
}
@Bean
@ConditionalOnMissingBean(WebMvcTagsProvider.class)
public DefaultWebMvcTagsProvider webMvcTagsProvider(ObjectProvider contributors) {
return new DefaultWebMvcTagsProvider(this.properties.getWeb().getServer().getRequest().isIgnoreTrailingSlash(),
contributors.orderedStream().collect(Collectors.toList()));
}
@Bean
public FilterRegistrationBean webMvcMetricsFilter(MeterRegistry registry,
WebMvcTagsProvider tagsProvider) {
ServerRequest request = this.properties.getWeb().getServer().getRequest();
WebMvcMetricsFilter filter = new WebMvcMetricsFilter(registry, tagsProvider, request.getMetricName(),
request.getAutotime());
FilterRegistrationBean registration = new FilterRegistrationBean<>(filter);
registration.setOrder(Ordered.HIGHEST_PRECEDENCE + 1);
registration.setDispatcherTypes(DispatcherType.REQUEST, DispatcherType.ASYNC);
return registration;
}
@Bean
@Order(0)
public MeterFilter metricsHttpServerUriTagFilter() {
String metricName = this.properties.getWeb().getServer().getRequest().getMetricName();
MeterFilter filter = new OnlyOnceLoggingDenyMeterFilter(
() -> String.format("Reached the maximum number of URI tags for '%s'.", metricName));
return MeterFilter.maximumAllowableTags(metricName, "uri", this.properties.getWeb().getServer().getMaxUriTags(),
filter);
}
@Bean
public MetricsWebMvcConfigurer metricsWebMvcConfigurer(MeterRegistry meterRegistry,
WebMvcTagsProvider tagsProvider) {
return new MetricsWebMvcConfigurer(meterRegistry, tagsProvider);
}
/**
* {@link WebMvcConfigurer} to add metrics interceptors.
*/
static class MetricsWebMvcConfigurer implements WebMvcConfigurer {
private final MeterRegistry meterRegistry;
private final WebMvcTagsProvider tagsProvider;
MetricsWebMvcConfigurer(MeterRegistry meterRegistry, WebMvcTagsProvider tagsProvider) {
this.meterRegistry = meterRegistry;
this.tagsProvider = tagsProvider;
}
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(new LongTaskTimingHandlerInterceptor(this.meterRegistry, this.tagsProvider));
}
}
}