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.cassandra.service;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import org.apache.cassandra.db.SnapshotCommand;
  import org.apache.cassandra.net.IVerbHandler;
  import org.apache.cassandra.net.Message;
  import org.apache.cassandra.net.MessagingService;
  import org.apache.cassandra.service.snapshot.SnapshotManager;
  import org.apache.cassandra.service.snapshot.SnapshotOptions;
  import org.apache.cassandra.service.snapshot.SnapshotType;
  import org.apache.cassandra.utils.DiagnosticSnapshotService;
  
  
  public class SnapshotVerbHandler implements IVerbHandler<SnapshotCommand>
  {
      public static final SnapshotVerbHandler instance = new SnapshotVerbHandler();
      private static final Logger logger = LoggerFactory.getLogger(SnapshotVerbHandler.class);
  
      public void doVerb(Message<SnapshotCommand> message)
      {
          SnapshotCommand command = message.payload;
          if (command.clear_snapshot)
          {
              SnapshotManager.instance.clearSnapshots(command.snapshot_name, command.keyspace);
          }
          else if (DiagnosticSnapshotService.isDiagnosticSnapshotRequest(command))
          {
              DiagnosticSnapshotService.snapshot(command, message.from());
          }
          else
          {
              try
              {
                  SnapshotOptions options = SnapshotOptions.systemSnapshot(command.snapshot_name, SnapshotType.DIAGNOSTICS, command.keyspace + '.' + command.column_family).build();
                  SnapshotManager.instance.takeSnapshot(options);
              }
              catch (Exception ex)
              {
                  throw new RuntimeException(ex);
              }
          }
  
          logger.debug("Enqueuing response to snapshot request {} to {}", command.snapshot_name, message.from());
          MessagingService.instance().send(message.emptyResponse(), message.from());
      }
  }
  