content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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
   *
   *      http://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 com.alibaba.nacos.naming.controllers;
  
  import com.alibaba.nacos.api.common.Constants;
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.api.naming.CommonParams;
  import com.alibaba.nacos.api.naming.pojo.healthcheck.AbstractHealthChecker;
  import com.alibaba.nacos.api.naming.pojo.healthcheck.HealthCheckType;
  import com.alibaba.nacos.auth.annotation.Secured;
  import com.alibaba.nacos.common.utils.ConvertUtils;
  import com.alibaba.nacos.common.utils.JacksonUtils;
  import com.alibaba.nacos.common.utils.StringUtils;
  import com.alibaba.nacos.core.controller.compatibility.Compatibility;
  import com.alibaba.nacos.core.paramcheck.ExtractorManager;
  import com.alibaba.nacos.core.utils.WebUtils;
  import com.alibaba.nacos.naming.core.HealthOperator;
  import com.alibaba.nacos.naming.core.HealthOperatorV2Impl;
  import com.alibaba.nacos.naming.misc.Loggers;
  import com.alibaba.nacos.naming.misc.UtilsAndCommons;
  import com.alibaba.nacos.naming.monitor.MetricsMonitor;
  import com.alibaba.nacos.naming.paramcheck.NamingDefaultHttpParamExtractor;
  import com.alibaba.nacos.naming.web.CanDistro;
  import com.alibaba.nacos.plugin.auth.constant.ActionTypes;
  import com.alibaba.nacos.plugin.auth.constant.ApiType;
  import com.alibaba.nacos.sys.env.EnvUtil;
  import com.fasterxml.jackson.databind.node.ObjectNode;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.http.ResponseEntity;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.PutMapping;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RestController;
  
  import jakarta.servlet.http.HttpServletRequest;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import static com.alibaba.nacos.naming.constants.RequestConstant.HEALTHY_KEY;
  import static com.alibaba.nacos.naming.constants.RequestConstant.IP_KEY;
  import static com.alibaba.nacos.naming.constants.RequestConstant.PORT_KEY;
  import static com.alibaba.nacos.naming.constants.RequestConstant.VALID_KEY;
  
  /**
   * Health status related operation controller.
   *
   * @author nkorange
   * @author nanamikon
   * @since 0.8.0
   */
  @Deprecated
  @RestController("namingHealthController")
  @RequestMapping(UtilsAndCommons.NACOS_NAMING_CONTEXT + UtilsAndCommons.NACOS_NAMING_HEALTH_CONTEXT)
  @ExtractorManager.Extractor(httpExtractor = NamingDefaultHttpParamExtractor.class)
  public class HealthController {
      
      @Autowired
      private HealthOperatorV2Impl healthOperatorV2;
      
      /**
       * Just a health check.
       *
       * @return hello message
       */
      @RequestMapping("/server")
      @Compatibility(apiType = ApiType.ADMIN_API)
      public ResponseEntity server() {
          ObjectNode result = JacksonUtils.createEmptyJsonNode();
          result.put("msg", "Hello! I am Nacos-Naming and healthy! total services: " + MetricsMonitor.getDomCountMonitor()
                  + ", local port:" + EnvUtil.getPort());
          return ResponseEntity.ok(result);
      }
      
      /**
       * Update health check for instance.
       *
       * @param request http request
       * @return 'ok' if success
       */
      @CanDistro
      @PutMapping(value = {"", "/instance"})
      @Secured(action = ActionTypes.WRITE)
      @Compatibility(apiType = ApiType.ADMIN_API, alternatives = "PUT ${contextPath:nacos}/v3/admin/health/instance")
      public ResponseEntity update(HttpServletRequest request) throws NacosException {
          String healthyString = WebUtils.optional(request, HEALTHY_KEY, StringUtils.EMPTY);
          if (StringUtils.isBlank(healthyString)) {
              healthyString = WebUtils.optional(request, VALID_KEY, StringUtils.EMPTY);
          }
          if (StringUtils.isBlank(healthyString)) {
              throw new IllegalArgumentException("Param 'healthy' is required.");
          }
          boolean health = ConvertUtils.toBoolean(healthyString);
          String serviceName = WebUtils.required(request, CommonParams.SERVICE_NAME);
          String namespaceId = WebUtils.optional(request, CommonParams.NAMESPACE_ID, Constants.DEFAULT_NAMESPACE_ID);
          String clusterName = WebUtils
                  .optional(request, CommonParams.CLUSTER_NAME, UtilsAndCommons.DEFAULT_CLUSTER_NAME);
          String ip = WebUtils.required(request, IP_KEY);
          int port = Integer.parseInt(WebUtils.required(request, PORT_KEY));
          getHealthOperator()
                  .updateHealthStatusForPersistentInstance(namespaceId, serviceName, clusterName, ip, port, health);
          return ResponseEntity.ok("ok");
      }
      
      /**
       * Get all health checkers.
       *
       * @return health checkers map
       */
      @GetMapping("/checkers")
      @Compatibility(apiType = ApiType.ADMIN_API, alternatives = "GET ${contextPath:nacos}/v3/admin/health/checkers")
      public ResponseEntity checkers() {
          List<Class<? extends AbstractHealthChecker>> classes = HealthCheckType.getLoadedHealthCheckerClasses();
          Map<String, AbstractHealthChecker> checkerMap = new HashMap<>(8);
          for (Class<? extends AbstractHealthChecker> clazz : classes) {
              try {
                  AbstractHealthChecker checker = clazz.newInstance();
                  checkerMap.put(checker.getType(), checker);
              } catch (InstantiationException | IllegalAccessException e) {
                  Loggers.EVT_LOG.error("checkers error ", e);
              }
          }
          return ResponseEntity.ok(checkerMap);
      }
      
      private HealthOperator getHealthOperator() {
          return healthOperatorV2;
      }
  }
  