package com.ctrip.apollo.adminservice;

 import org.springframework.beans.factory.annotation.Autowired;

 import org.springframework.boot.actuate.health.Health;

 import org.springframework.boot.actuate.health.HealthIndicator;

 import org.springframework.data.domain.PageRequest;

 import org.springframework.stereotype.Component;

 import com.ctrip.apollo.biz.service.AppService;

 @Component

 public class AdminServiceHealthIndicator implements HealthIndicator {

   @Autowired

   private AppService appService;

   @Override

   public Health health() {

     int errorCode = check();

     if (errorCode != 0) {

       return Health.down().withDetail("Error Code", errorCode).build();

     }

     return Health.up().build();

   }

   private int check() {

     PageRequest pageable = new PageRequest(0, 1);

     appService.findAll(pageable);

     return 0;

   }

 }