spring boot 2.0.0.RELEASE 监控跟踪

Spring Boot 2.0 Actuator详解

最新推荐文章于 2024-11-07 19:47:50 发布

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本文详细介绍了Spring Boot 2.0中Actuator模块的重要更新，包括监控跟踪管理的变化、配置方法及如何自定义监控端点。通过实例展示了如何创建自定义的健康检查指标和信息贡献。

最近Spring boot 2.0出来了,那么2.0最大的变化是哪些呢.

1、首先监控跟踪管理actuator 已经跟原来差距很大了.

首先原来很多的跟踪都是系统自带的,系统启动的时候就启动

现在的Spring boot 需要配置

management.endpoints.web.exposure.include=*

management.endpoints.web.exposure.exclude=env,beans

现在的Spring boot 2.0 需要根据配置来启动,同时排查不需要的启动项目

参考:

https://docs.spring.io/spring-boot/docs/2.0.0.RELEASE/reference/htmlsingle/#production-ready-endpoints-exposing-endpoints

其中我们可以自定义endpoints

package org.redlich.actuator;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.springframework.boot.actuate.endpoint.annotation.Endpoint;
import org.springframework.boot.actuate.endpoint.annotation.ReadOperation;
import org.springframework.boot.actuate.endpoint.annotation.Selector;
import org.springframework.boot.actuate.endpoint.annotation.WriteOperation;
import org.springframework.stereotype.Component;

@Endpoint(id = "person")
@Component
public class PersonEndpoint {

    private final Map<String, Person> people = new ConcurrentHashMap<>();

    PersonEndpoint() {
        this.people.put("mike", new Person("Michael Redlich"));
        this.people.put("rowena", new Person("Rowena Redlich"));
        this.people.put("barry", new Person("Barry Burd"));
    }

    @ReadOperation
    public List<Person> getAll() {
        return new ArrayList<>(this.people.values());
    }

    @ReadOperation
    public Person getPerson(@Selector String person) {
        return this.people.get(person);
    }

    @WriteOperation
    public void addOrUpdatePerson(@Selector String name, String person) {
        this.people.put(name, new Person(person));
    }

    public static class Person {
        private String name;

        Person(String name) {
            this.name = name;
        }

        public String getName() {
            return this.name;
        }
    }
}

`localhost:8080/application` will display all the endpoints.

`localhost:8080/application/person` will display all the names from the user-defined endpoint.

`localhost:8080/application/person/mike` will display only my name.

如果你想把一些信息定义在info里面那么需要

import org.springframework.boot.actuate.info.Info;
import org.springframework.boot.actuate.info.InfoContributor;
import org.springframework.stereotype.Component;

import java.util.Collections;

@Component
class ExampleInfoContributor implements InfoContributor {

    @Override
    public void contribute(Info.Builder builder) {
        builder.withDetail("example",
                Collections.singletonMap("key", "value"));
    }

}

如果需要自定义在health 里面那么

import org.springframework.boot.actuate.health.Health;
import org.springframework.boot.actuate.health.HealthIndicator;
import org.springframework.stereotype.Component;

@Component
public class MyHealthIndicator implements HealthIndicator {

	@Override
	public Health health() {
		int errorCode = check(); // perform some specific health check
		if (errorCode != 0) {
			return Health.down().withDetail("Error Code", errorCode).build();
		}
		return Health.up().build();
	}

}