springboot2
spring-boot-starter-actuator
原生端点  用户自定义端点


应用配置类   查看应用静态信息,例如自动配置信息 加载的bean信息  配置信息 环境信息 请求映射信息
度量指标类   运行期的动态信息，堆栈 一些健康指标 metrics信息等
操作控制类   shutdown 

HealthIndicators
org.springframework.boot.actuate.health.Health

DiskSpaceHealthIndicator
DataSourceHealthIndicator
ElasticsearchHealthIndicator


自定义端点
@Endpoint @ReadOperator @WriteOperation @DeleteOperation

@Endpoint 
@ReadOperation  
@WriteOperation  
@DeleteOperation  

@WebEndpoint
@JmxEndpoint

@WebEndpoint 相当于  @RestController


默认只暴露 info和health接口

management.endpoints.web.exposure.include = health,info,metrics


management.server.port=8090
management.endpoints.web.base-path=/actuator
management.endpoints.web.exposure.include=*
management.endpoint.health.show-details=always
management.endpoint.shutdown.enabled=true

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

management.endpoints.jmx.exposure.exclude   
management.endpoints.jmx.exposure.include   *

health
info         显示配置文件中以 info 开头的配置信息
metrics
mappings
httptrace    显示HTTP跟踪信息（默认最近100个HTTP请求 响应信息）
configprops 
env
beans
loggers
prometheus

jolokia   通过HTTP公开JMX bean（当Jolokia在类路径上时，不适用于WebFlux）

Using Jolokia for JMX over HTTP




自定义健康指示器和监控端点



/actuator/myendpoint
/actuator/health

curl post json 数据
curl -H "Content-type: application/json" -X POST -d '{"property":"myHealthStatus", "value":"FAIL2"}'  http://127.0.0.1:8090/actuator/myendpoint

postman 
post raw  JSON(application/json)
{"property":"myHealthStatus", "value":"FAIL"}




@Component("myHealthIndicator")
public class MyHealthIndicator implements HealthIndicator{  
        @Override
        public Health health() {
            Object myHealthStatus = StatusUtil.get("myHealthStatus");
            String myHealthStatusStr = null;
            if(myHealthStatus!=null) {
                myHealthStatusStr = myHealthStatus.toString();
            }else {
                myHealthStatusStr = "ok";
            }
                      
            if("ok".equalsIgnoreCase(myHealthStatusStr )){
                return Health.up().withDetail("myHealthStatus",myHealthStatusStr).build();
            }
            return Health.down().withDetail("myHealthStatus",myHealthStatusStr).build();
        }       
}



@Component
@Endpoint(id = "myendpoint")
// 一定要加@Component ，不能用  myEndpoint
public class MyEndPoint {
    
    @ReadOperation
    public Map<String,Object> read(){
        Map<String,Object> status = StatusUtil.getData();
        Map<String,Object> map = new HashMap<>(status);
        map.put("now", LocalDateTime.now().toString());
        return map;
    }
        
    @WriteOperation
    public void update(String property, String value)  {
        System.out.println(property+","+value);
        StatusUtil.put(property, value);
    }   
}






完整代码
https://gitee.com/dyyx/springboothello/tree/master/src/main/java/demo/myactuator