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dab4fe5bcd
Summary: The patch adds checkpoint support to BlobDB. Blob files are hard linked or copied, depending on whether the checkpoint directory is on the same filesystem or not, similarly to table files. TODO: Add support for blob files to `ExportColumnFamily` and to the checksum verification logic used by backup/restore. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7959 Test Plan: Ran `make check` and the crash test for a while. Reviewed By: riversand963 Differential Revision: D26434768 Pulled By: ltamasi fbshipit-source-id: 994be55a8dc08133028250760fca440d2c7c4dc5
67 lines
2.4 KiB
C++
67 lines
2.4 KiB
C++
// Copyright (c) 2017-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#pragma once
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#ifndef ROCKSDB_LITE
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#include "rocksdb/utilities/checkpoint.h"
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#include <string>
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#include "file/filename.h"
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#include "rocksdb/db.h"
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namespace ROCKSDB_NAMESPACE {
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class CheckpointImpl : public Checkpoint {
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public:
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explicit CheckpointImpl(DB* db) : db_(db) {}
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Status CreateCheckpoint(const std::string& checkpoint_dir,
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uint64_t log_size_for_flush,
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uint64_t* sequence_number_ptr) override;
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Status ExportColumnFamily(ColumnFamilyHandle* handle,
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const std::string& export_dir,
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ExportImportFilesMetaData** metadata) override;
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// Checkpoint logic can be customized by providing callbacks for link, copy,
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// or create.
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Status CreateCustomCheckpoint(
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const DBOptions& db_options,
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std::function<Status(const std::string& src_dirname,
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const std::string& fname, FileType type)>
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link_file_cb,
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std::function<Status(const std::string& src_dirname,
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const std::string& fname, uint64_t size_limit_bytes,
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FileType type, const std::string& checksum_func_name,
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const std::string& checksum_val)>
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copy_file_cb,
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std::function<Status(const std::string& fname,
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const std::string& contents, FileType type)>
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create_file_cb,
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uint64_t* sequence_number, uint64_t log_size_for_flush,
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bool get_live_table_checksum = false);
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private:
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void CleanStagingDirectory(const std::string& path, Logger* info_log);
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// Export logic customization by providing callbacks for link or copy.
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Status ExportFilesInMetaData(
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const DBOptions& db_options, const ColumnFamilyMetaData& metadata,
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std::function<Status(const std::string& src_dirname,
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const std::string& fname)>
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link_file_cb,
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std::function<Status(const std::string& src_dirname,
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const std::string& fname)>
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copy_file_cb);
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private:
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DB* db_;
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};
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} // namespace ROCKSDB_NAMESPACE
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#endif // ROCKSDB_LITE
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