java metrics 简书_Micrometer 收集Metrics
添加依赖
# Spring Boot 收集Metrics
org.springframework.boot
spring-boot-starter-actuator
# 提供Prometheus格式的Metrics
io.micrometer
micrometer-registry-prometheus
配置文件
#metrics
management.endpoints.web.exposure.include=* # 或者设置为promethues，只开放promethues
management.metrics.enable.jvm=true
management.endpoint.health.show-details= always
info.app.name=certificate-manager
代码埋点
// 创建 Registry
private MeterRegistry registry = new SimpleMeterRegistry();
// 或者使用局的 Registry
Metrics.counter("test.name","type","type1","desc","desc1").increment();
添加通用Tag
@Bean
MeterRegistryCustomizer metricsCommonTags() {
return registry -> registry.config().commonTags("application", "certificate-manager");
}
或者通过配置文件(properties文件yml修改格式即可)
management.metrics.tags.region=us-east-1
management.metrics.tags.stack=prod
测试Controller
package com.ericsson.automotive.cm.certificatemanager.v1.controller;
import io.micrometer.core.instrument.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import java.time.LocalDateTime;
@RestController
@RequestMapping("/monitor")
public class MonitorController {
private MyObj myObj = new MyObj();
private Counter testCounter;
private MeterRegistry registry = Metrics.globalRegistry;
@Autowired
public MonitorController() {
Gauge.builder("people-gauge", myObj, MyObj::getVal)
.register(registry);
testCounter = Metrics.counter("test.counter.total", "services", "demo");
}
@RequestMapping(value = "/counter", method = RequestMethod.GET)
public String counter() {
testCounter.increment();
return "counter + 1";
}
@RequestMapping(value = "/time", method = RequestMethod.GET)
public String time() {
Timer timer = Metrics.timer("timer", "timer-method", "cost");
timer.record(() -> timer());
return "timer ok";
}
@RequestMapping(value = "/time2", method = RequestMethod.GET)
public void time2(){
Timer.Sample sample = Timer.start(registry);
timer();
sample.stop(registry.timer("timer-method2", "timer-method", "ca"));
}
@RequestMapping(value = "/gauge", method = RequestMethod.GET)
public String gauge() {
myObj.setVal(LocalDateTime.now().getSecond());
return "gauge is " + LocalDateTime.now().getSecond();
}
private void timer() {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public class MyObj {
private int val;
public int getVal() {
return val;
}
public void setVal(int val) {
this.val = val;
}
}
}
prometheus配置Target
在promethues目录下修改配置文件prometheus.yml加入自己的应用提供的metrics接口。如 http://192.168.197.4:8080/actuator/prometheus
- job_name: 'spring-actuator'
metrics_path: '/actuator/prometheus'
scrape_interval: 15s
static_configs:
- targets: ['192.168.197.4:8081','192.168.197.4:8080']