1 files changed, 62 insertions, 0 deletions
diff --git a/src/rocksdb/tools/dump/rocksdb_undump.cc b/src/rocksdb/tools/dump/rocksdb_undump.cc
new file mode 100644
index 00000000..450c7e47
--- /dev/null
+++ b/src/rocksdb/tools/dump/rocksdb_undump.cc
@@ -0,0 +1,62 @@
+//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
+//  This source code is licensed under both the GPLv2 (found in the
+//  COPYING file in the root directory) and Apache 2.0 License
+//  (found in the LICENSE.Apache file in the root directory).
+
+#if !(defined GFLAGS) || defined(ROCKSDB_LITE)
+
+#include <cstdio>
+int main() {
+#ifndef GFLAGS
+  fprintf(stderr, "Please install gflags to run rocksdb tools\n");
+#endif
+#ifdef ROCKSDB_LITE
+  fprintf(stderr, "DbUndumpTool is not supported in ROCKSDB_LITE\n");
+#endif
+  return 1;
+}
+
+#else
+
+#include "rocksdb/convenience.h"
+#include "rocksdb/db_dump_tool.h"
+#include "util/gflags_compat.h"
+
+DEFINE_string(dump_location, "", "Path to the dump file that will be loaded");
+DEFINE_string(db_path, "", "Path to the db that we will undump the file into");
+DEFINE_bool(compact, false, "Compact the db after loading the dumped file");
+DEFINE_string(db_options, "",
+              "Options string used to open the database that will be loaded");
+
+int main(int argc, char **argv) {
+  GFLAGS_NAMESPACE::ParseCommandLineFlags(&argc, &argv, true);
+
+  if (FLAGS_db_path == "" || FLAGS_dump_location == "") {
+    fprintf(stderr, "Please set --db_path and --dump_location\n");
+    return 1;
+  }
+
+  rocksdb::UndumpOptions undump_options;
+  undump_options.db_path = FLAGS_db_path;
+  undump_options.dump_location = FLAGS_dump_location;
+  undump_options.compact_db = FLAGS_compact;
+
+  rocksdb::Options db_options;
+  if (FLAGS_db_options != "") {
+    rocksdb::Options parsed_options;
+    rocksdb::Status s = rocksdb::GetOptionsFromString(
+        db_options, FLAGS_db_options, &parsed_options);
+    if (!s.ok()) {
+      fprintf(stderr, "Cannot parse provided db_options\n");
+      return 1;
+    }
+    db_options = parsed_options;
+  }
+
+  rocksdb::DbUndumpTool tool;
+  if (!tool.Run(undump_options, db_options)) {
+    return 1;
+  }
+  return 0;
+}
+#endif  // !(defined GFLAGS) || defined(ROCKSDB_LITE)