spring MetricsRestTemplateCustomizer 源码
springboot MetricsRestTemplateCustomizer 代码
文件路径：/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/metrics/web/client/MetricsRestTemplateCustomizer.java
/*
* 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.metrics.web.client;
import java.util.ArrayList;
import java.util.List;
import io.micrometer.core.instrument.MeterRegistry;
import org.springframework.boot.actuate.metrics.AutoTimer;
import org.springframework.boot.web.client.RestTemplateCustomizer;
import org.springframework.http.client.ClientHttpRequestInterceptor;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.util.UriTemplateHandler;
/**
* {@link RestTemplateCustomizer} that configures the {@link RestTemplate} to record
* request metrics.
*
* @author Andy Wilkinson
* @author Phillip Webb
* @since 2.0.0
*/
public class MetricsRestTemplateCustomizer implements RestTemplateCustomizer {
private final MetricsClientHttpRequestInterceptor interceptor;
/**
* Creates a new {@code MetricsRestTemplateInterceptor}. When {@code autoTimeRequests}
* is set to {@code true}, the interceptor records metrics using the given
* {@code meterRegistry} with tags provided by the given {@code tagProvider} and with
* {@link AutoTimer auto-timed configuration}.
* @param meterRegistry the meter registry
* @param tagProvider the tag provider
* @param metricName the name of the recorded metric
* @param autoTimer the auto-timers to apply or {@code null} to disable auto-timing
* @since 2.2.0
*/
public MetricsRestTemplateCustomizer(MeterRegistry meterRegistry, RestTemplateExchangeTagsProvider tagProvider,
String metricName, AutoTimer autoTimer) {
this.interceptor = new MetricsClientHttpRequestInterceptor(meterRegistry, tagProvider, metricName, autoTimer);
}
@Override
public void customize(RestTemplate restTemplate) {
UriTemplateHandler templateHandler = restTemplate.getUriTemplateHandler();
templateHandler = this.interceptor.createUriTemplateHandler(templateHandler);
restTemplate.setUriTemplateHandler(templateHandler);
List<ClientHttpRequestInterceptor> existingInterceptors = restTemplate.getInterceptors();
if (!existingInterceptors.contains(this.interceptor)) {
List<ClientHttpRequestInterceptor> interceptors = new ArrayList<>();
interceptors.add(this.interceptor);
interceptors.addAll(existingInterceptors);
restTemplate.setInterceptors(interceptors);
}
}
}
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spring DefaultRestTemplateExchangeTagsProvider 源码
spring MetricsClientHttpRequestInterceptor 源码
spring RestTemplateExchangeTags 源码
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- 本文标签： Spring Boot Java Spring
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