content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.bookkeeper.server.http.service;
  
  import static com.google.common.base.Preconditions.checkNotNull;
  
  import java.util.HashMap;
  import java.util.concurrent.ExecutorService;
  import org.apache.bookkeeper.client.BookKeeperAdmin;
  import org.apache.bookkeeper.common.util.JsonUtil;
  import org.apache.bookkeeper.conf.ServerConfiguration;
  import org.apache.bookkeeper.http.HttpServer;
  import org.apache.bookkeeper.http.service.HttpEndpointService;
  import org.apache.bookkeeper.http.service.HttpServiceRequest;
  import org.apache.bookkeeper.http.service.HttpServiceResponse;
  import org.apache.bookkeeper.net.BookieId;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * HttpEndpointService that handle Bookkeeper Decommission related http request.
   * The PUT method will send decommission bookie command running at backend.
   */
  public class DecommissionService implements HttpEndpointService {
  
      static final Logger LOG = LoggerFactory.getLogger(DecommissionService.class);
  
      protected ServerConfiguration conf;
      protected BookKeeperAdmin bka;
      protected ExecutorService executor;
  
  
      public DecommissionService(ServerConfiguration conf, BookKeeperAdmin bka, ExecutorService executor) {
          checkNotNull(conf);
          this.conf = conf;
          this.bka = bka;
          this.executor = executor;
      }
  
      /*
       * decommission bookie.
       */
      @Override
      public HttpServiceResponse handle(HttpServiceRequest request) throws Exception {
          HttpServiceResponse response = new HttpServiceResponse();
  
          if (HttpServer.Method.PUT == request.getMethod()) {
              String requestBody = request.getBody();
  
              if (requestBody == null) {
                  response.setCode(HttpServer.StatusCode.NOT_FOUND);
                  response.setBody("Null request body for DecommissionService.");
                  return response;
              }
  
              @SuppressWarnings("unchecked")
              HashMap<String, String> configMap = JsonUtil.fromJson(requestBody, HashMap.class);
              if (configMap != null && configMap.containsKey("bookie_src")) {
                  try {
                      BookieId bookieSrc = BookieId.parse(configMap.get("bookie_src"));
  
                      executor.execute(() -> {
                          try {
                              LOG.info("Start decommissioning bookie.");
                              bka.decommissionBookie(bookieSrc);
                              LOG.info("Complete decommissioning bookie.");
                          } catch (Exception e) {
                              LOG.error("Error handling decommissionBookie: {}.", bookieSrc, e);
                          }
                      });
  
                      response.setCode(HttpServer.StatusCode.OK);
                      response.setBody("Success send decommission Bookie command " + bookieSrc);
                      return response;
                  } catch (Exception e) {
                      LOG.error("Exception occurred while decommissioning bookie: ", e);
                      response.setCode(HttpServer.StatusCode.NOT_FOUND);
                      response.setBody("Exception when send decommission command." + e.getMessage());
                      return response;
                  }
              } else {
                  response.setCode(HttpServer.StatusCode.NOT_FOUND);
                  response.setBody("Request body not contains bookie_src.");
                  return response;
              }
          } else {
              response.setCode(HttpServer.StatusCode.NOT_FOUND);
              response.setBody("Not found method. Should be PUT method");
              return response;
          }
      }
  }
  