ceph/src/rocksdb/tools/dump/rocksdb_undump.cc

   1 //  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
   2 //  This source code is licensed under the BSD-style license found in the
   3 //  LICENSE file in the root directory of this source tree. An additional grant
   4 //  of patent rights can be found in the PATENTS file in the same directory.
   5
   6 #if !(defined GFLAGS) || defined(ROCKSDB_LITE)
   7
   8 #include <cstdio>
   9 int main() {
  10 #ifndef GFLAGS
  11   fprintf(stderr, "Please install gflags to run rocksdb tools\n");
  12 #endif
  13 #ifdef ROCKSDB_LITE
  14   fprintf(stderr, "DbUndumpTool is not supported in ROCKSDB_LITE\n");
  15 #endif
  16   return 1;
  17 }
  18
  19 #else
  20
  21 #include <gflags/gflags.h>
  22 #include "rocksdb/convenience.h"
  23 #include "rocksdb/db_dump_tool.h"
  24
  25 DEFINE_string(dump_location, "", "Path to the dump file that will be loaded");
  26 DEFINE_string(db_path, "", "Path to the db that we will undump the file into");
  27 DEFINE_bool(compact, false, "Compact the db after loading the dumped file");
  28 DEFINE_string(db_options, "",
  29               "Options string used to open the database that will be loaded");
  30
  31 int main(int argc, char **argv) {
  32   GFLAGS::ParseCommandLineFlags(&argc, &argv, true);
  33
  34   if (FLAGS_db_path == "" || FLAGS_dump_location == "") {
  35     fprintf(stderr, "Please set --db_path and --dump_location\n");
  36     return 1;
  37   }
  38
  39   rocksdb::UndumpOptions undump_options;
  40   undump_options.db_path = FLAGS_db_path;
  41   undump_options.dump_location = FLAGS_dump_location;
  42   undump_options.compact_db = FLAGS_compact;
  43
  44   rocksdb::Options db_options;
  45   if (FLAGS_db_options != "") {
  46     rocksdb::Options parsed_options;
  47     rocksdb::Status s = rocksdb::GetOptionsFromString(
  48         db_options, FLAGS_db_options, &parsed_options);
  49     if (!s.ok()) {
  50       fprintf(stderr, "Cannot parse provided db_options\n");
  51       return 1;
  52     }
  53     db_options = parsed_options;
  54   }
  55
  56   rocksdb::DbUndumpTool tool;
  57   if (!tool.Run(undump_options, db_options)) {
  58     return 1;
  59   }
  60   return 0;
  61 }
  62 #endif  // !(defined GFLAGS) || defined(ROCKSDB_LITE)