mirror of https://github.com/facebook/rocksdb.git
104 lines
3.7 KiB
C++
104 lines
3.7 KiB
C++
// Copyright (c) 2011-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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#include <cinttypes>
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#include <functional>
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#include <memory>
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#include <string>
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#include <vector>
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#include "rocksdb/compression_type.h"
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#include "rocksdb/env.h"
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#include "rocksdb/rocksdb_namespace.h"
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#include "rocksdb/types.h"
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namespace ROCKSDB_NAMESPACE {
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class VersionSet;
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class FileSystem;
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class SystemClock;
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struct ImmutableOptions;
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struct MutableCFOptions;
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struct FileOptions;
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class BlobFileAddition;
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class Status;
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class Slice;
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class BlobLogWriter;
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class IOTracer;
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class BlobFileCompletionCallback;
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class BlobFileBuilder {
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public:
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BlobFileBuilder(VersionSet* versions, FileSystem* fs,
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const ImmutableOptions* immutable_options,
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const MutableCFOptions* mutable_cf_options,
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const FileOptions* file_options, int job_id,
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uint32_t column_family_id,
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const std::string& column_family_name,
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Env::IOPriority io_priority,
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Env::WriteLifeTimeHint write_hint,
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const std::shared_ptr<IOTracer>& io_tracer,
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BlobFileCompletionCallback* blob_callback,
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BlobFileCreationReason creation_reason,
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std::vector<std::string>* blob_file_paths,
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std::vector<BlobFileAddition>* blob_file_additions);
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BlobFileBuilder(std::function<uint64_t()> file_number_generator,
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FileSystem* fs, const ImmutableOptions* immutable_options,
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const MutableCFOptions* mutable_cf_options,
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const FileOptions* file_options, int job_id,
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uint32_t column_family_id,
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const std::string& column_family_name,
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Env::IOPriority io_priority,
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Env::WriteLifeTimeHint write_hint,
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const std::shared_ptr<IOTracer>& io_tracer,
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BlobFileCompletionCallback* blob_callback,
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BlobFileCreationReason creation_reason,
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std::vector<std::string>* blob_file_paths,
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std::vector<BlobFileAddition>* blob_file_additions);
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BlobFileBuilder(const BlobFileBuilder&) = delete;
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BlobFileBuilder& operator=(const BlobFileBuilder&) = delete;
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~BlobFileBuilder();
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Status Add(const Slice& key, const Slice& value, std::string* blob_index);
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Status Finish();
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void Abandon(const Status& s);
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private:
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bool IsBlobFileOpen() const;
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Status OpenBlobFileIfNeeded();
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Status CompressBlobIfNeeded(Slice* blob, std::string* compressed_blob) const;
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Status WriteBlobToFile(const Slice& key, const Slice& blob,
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uint64_t* blob_file_number, uint64_t* blob_offset);
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Status CloseBlobFile();
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Status CloseBlobFileIfNeeded();
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std::function<uint64_t()> file_number_generator_;
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FileSystem* fs_;
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const ImmutableOptions* immutable_options_;
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uint64_t min_blob_size_;
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uint64_t blob_file_size_;
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CompressionType blob_compression_type_;
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const FileOptions* file_options_;
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int job_id_;
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uint32_t column_family_id_;
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std::string column_family_name_;
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Env::IOPriority io_priority_;
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Env::WriteLifeTimeHint write_hint_;
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std::shared_ptr<IOTracer> io_tracer_;
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BlobFileCompletionCallback* blob_callback_;
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BlobFileCreationReason creation_reason_;
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std::vector<std::string>* blob_file_paths_;
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std::vector<BlobFileAddition>* blob_file_additions_;
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std::unique_ptr<BlobLogWriter> writer_;
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uint64_t blob_count_;
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uint64_t blob_bytes_;
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};
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} // namespace ROCKSDB_NAMESPACE
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