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.Map;
  import org.apache.bookkeeper.common.util.JsonUtil;
  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.proto.BookieServer;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class SuspendCompactionService implements HttpEndpointService {
  
      static final Logger LOG = LoggerFactory.getLogger(SuspendCompactionService.class);
  
      protected BookieServer bookieServer;
  
      public SuspendCompactionService(BookieServer bookieServer) {
          checkNotNull(bookieServer);
          this.bookieServer = bookieServer;
      }
  
      @Override
      public HttpServiceResponse handle(HttpServiceRequest request) throws Exception {
          HttpServiceResponse response = new HttpServiceResponse();
  
          if (HttpServer.Method.PUT == request.getMethod()) {
              String requestBody = request.getBody();
              if (null == requestBody) {
                  return new HttpServiceResponse("Empty request body", HttpServer.StatusCode.BAD_REQUEST);
              } else {
                  @SuppressWarnings("unchecked")
                  Map<String, Object> configMap = JsonUtil.fromJson(requestBody, HashMap.class);
                  Boolean suspendMajor = (Boolean) configMap.get("suspendMajor");
                  Boolean suspendMinor = (Boolean) configMap.get("suspendMinor");
                  if (suspendMajor == null && suspendMinor == null) {
                      return new HttpServiceResponse("No suspendMajor or suspendMinor params found",
                              HttpServer.StatusCode.BAD_REQUEST);
                  }
                  String output = "";
                  if (suspendMajor != null  && suspendMajor) {
                      output = "Suspend majorGC on BookieServer: " + bookieServer.toString();
                      bookieServer.getBookie().getLedgerStorage().suspendMajorGC();
                  }
                  if (suspendMinor != null && suspendMinor) {
                      output += ", Suspend minorGC on BookieServer: " + bookieServer.toString();
                      bookieServer.getBookie().getLedgerStorage().suspendMinorGC();
                  }
                  String jsonResponse = JsonUtil.toJson(output);
                  if (LOG.isDebugEnabled()) {
                      LOG.debug("output body:" + jsonResponse);
                  }
                  response.setBody(jsonResponse);
                  response.setCode(HttpServer.StatusCode.OK);
                  return response;
              }
          } else if (HttpServer.Method.GET == request.getMethod()) {
              boolean isMajorGcSuspend = bookieServer.getBookie().getLedgerStorage().isMajorGcSuspended();
              boolean isMinorGcSuspend = bookieServer.getBookie().getLedgerStorage().isMinorGcSuspended();
              Map<String, String> output = new HashMap<>();
              output.put("isMajorGcSuspended", Boolean.toString(isMajorGcSuspend));
              output.put("isMinorGcSuspended", Boolean.toString(isMinorGcSuspend));
              String jsonResponse = JsonUtil.toJson(output);
              if (LOG.isDebugEnabled()) {
                  LOG.debug("output body:" + jsonResponse);
              }
              response.setBody(jsonResponse);
              response.setCode(HttpServer.StatusCode.OK);
              return response;
          } else {
              response.setCode(HttpServer.StatusCode.NOT_FOUND);
              response.setBody("Not found method. Should be PUT to suspend major or minor compaction, "
                      + "Or GET to get compaction state.");
              return response;
          }
      }
  }
  