spring AbstractJettyMetricsBinder 源码
springboot AbstractJettyMetricsBinder 代码
文件路径：/spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/metrics/web/jetty/AbstractJettyMetricsBinder.java
/*
* 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.metrics.web.jetty;
import org.eclipse.jetty.server.Server;
import org.springframework.boot.context.event.ApplicationStartedEvent;
import org.springframework.boot.web.context.WebServerApplicationContext;
import org.springframework.boot.web.embedded.jetty.JettyWebServer;
import org.springframework.boot.web.server.WebServer;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationListener;
/**
* Base class for binding Jetty metrics in response to an {@link ApplicationStartedEvent}.
*
* @author Andy Wilkinson
* @since 2.6.0
*/
public abstract class AbstractJettyMetricsBinder implements ApplicationListener<ApplicationStartedEvent> {
@Override
public void onApplicationEvent(ApplicationStartedEvent event) {
Server server = findServer(event.getApplicationContext());
if (server != null) {
bindMetrics(server);
}
}
private Server findServer(ApplicationContext applicationContext) {
if (applicationContext instanceof WebServerApplicationContext webServerApplicationContext) {
WebServer webServer = webServerApplicationContext.getWebServer();
if (webServer instanceof JettyWebServer jettyWebServer) {
return jettyWebServer.getServer();
}
}
return null;
}
protected abstract void bindMetrics(Server server);
}
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- 本文标签： Spring Boot Spring Java
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