Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/src/rocksdb/utilities/checkpoint/checkpoint_impl.h b/src/rocksdb/utilities/checkpoint/checkpoint_impl.h
new file mode 100644
index 00000000..a85fde59
--- /dev/null
+++ b/src/rocksdb/utilities/checkpoint/checkpoint_impl.h
@@ -0,0 +1,56 @@
+//  Copyright (c) 2017-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).
+
+#pragma once
+#ifndef ROCKSDB_LITE
+
+#include "rocksdb/utilities/checkpoint.h"
+
+#include <string>
+#include "rocksdb/db.h"
+#include "util/filename.h"
+
+namespace rocksdb {
+
+class CheckpointImpl : public Checkpoint {
+ public:
+  // Creates a Checkpoint object to be used for creating openable snapshots
+  explicit CheckpointImpl(DB* db) : db_(db) {}
+
+  // Builds an openable snapshot of RocksDB on the same disk, which
+  // accepts an output directory on the same disk, and under the directory
+  // (1) hard-linked SST files pointing to existing live SST files
+  // SST files will be copied if output directory is on a different filesystem
+  // (2) a copied manifest files and other files
+  // The directory should not already exist and will be created by this API.
+  // The directory will be an absolute path
+  using Checkpoint::CreateCheckpoint;
+  virtual Status CreateCheckpoint(const std::string& checkpoint_dir,
+                                  uint64_t log_size_for_flush) override;
+
+  // Checkpoint logic can be customized by providing callbacks for link, copy,
+  // or create.
+  Status CreateCustomCheckpoint(
+      const DBOptions& db_options,
+      std::function<Status(const std::string& src_dirname,
+                           const std::string& fname, FileType type)>
+          link_file_cb,
+      std::function<Status(const std::string& src_dirname,
+                           const std::string& fname, uint64_t size_limit_bytes,
+                           FileType type)>
+          copy_file_cb,
+      std::function<Status(const std::string& fname,
+                           const std::string& contents, FileType type)>
+          create_file_cb,
+      uint64_t* sequence_number, uint64_t log_size_for_flush);
+
+ private:
+  void CleanStagingDirectory(const std::string& path, Logger* info_log);
+  DB* db_;
+};
+
+}  //  namespace rocksdb
+
+#endif  // ROCKSDB_LITE