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Spring Boot Actuator AutoConfigure
/*
* Copyright 2012-2019 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;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.binder.MeterBinder;
import io.micrometer.core.instrument.composite.CompositeMeterRegistry;
import io.micrometer.core.instrument.config.MeterFilter;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.context.ApplicationContext;
/**
* {@link BeanPostProcessor} that delegates to a lazily created
* {@link MeterRegistryConfigurer} to post-process {@link MeterRegistry} beans.
*
* @author Jon Schneider
* @author Phillip Webb
* @author Andy Wilkinson
*/
class MeterRegistryPostProcessor implements BeanPostProcessor {
private final ObjectProvider meterBinders;
private final ObjectProvider meterFilters;
private final ObjectProvider> meterRegistryCustomizers;
private final ObjectProvider metricsProperties;
private volatile MeterRegistryConfigurer configurer;
private final ApplicationContext applicationContext;
MeterRegistryPostProcessor(ObjectProvider meterBinders, ObjectProvider meterFilters,
ObjectProvider> meterRegistryCustomizers,
ObjectProvider metricsProperties, ApplicationContext applicationContext) {
this.meterBinders = meterBinders;
this.meterFilters = meterFilters;
this.meterRegistryCustomizers = meterRegistryCustomizers;
this.metricsProperties = metricsProperties;
this.applicationContext = applicationContext;
}
@Override
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
if (bean instanceof MeterRegistry) {
getConfigurer().configure((MeterRegistry) bean);
}
return bean;
}
private MeterRegistryConfigurer getConfigurer() {
if (this.configurer == null) {
boolean hasCompositeMeterRegistry = this.applicationContext
.getBeanNamesForType(CompositeMeterRegistry.class, false, false).length != 0;
this.configurer = new MeterRegistryConfigurer(this.meterRegistryCustomizers, this.meterFilters,
this.meterBinders, this.metricsProperties.getObject().isUseGlobalRegistry(),
hasCompositeMeterRegistry);
}
return this.configurer;
}
}