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https://github.com/facebook/rocksdb.git
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056e08d6c4
Summary: - [x] Enabled blob caching for MultiGetBlob in RocksDB - [x] Refactored MultiGetBlob logic and interface in RocksDB - [x] Cleaned up Version::MultiGetBlob() and moved 'blob'-related code snippets into BlobSource - [x] Add End-to-end test cases in db_blob_basic_test and also add unit tests in blob_source_test This task is a part of https://github.com/facebook/rocksdb/issues/10156 Pull Request resolved: https://github.com/facebook/rocksdb/pull/10272 Reviewed By: ltamasi Differential Revision: D37558112 Pulled By: gangliao fbshipit-source-id: a73a6a94ffdee0024d5b2a39e6d1c1a7d38664db
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
// Copyright (c) Meta Platforms, Inc. and affiliates.
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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 "rocksdb/compression_type.h"
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#include "rocksdb/slice.h"
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#include "rocksdb/status.h"
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#include "util/autovector.h"
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namespace ROCKSDB_NAMESPACE {
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// A read Blob request structure for use in BlobSource::MultiGetBlob and
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// BlobFileReader::MultiGetBlob.
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struct BlobReadRequest {
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// User key to lookup the paired blob
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const Slice* user_key = nullptr;
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// File offset in bytes
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uint64_t offset = 0;
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// Length to read in bytes
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size_t len = 0;
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// Blob compression type
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CompressionType compression = kNoCompression;
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// Output parameter set by MultiGetBlob() to point to the data buffer, and
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// the number of valid bytes
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PinnableSlice* result = nullptr;
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// Status of read
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Status* status = nullptr;
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BlobReadRequest(const Slice& _user_key, uint64_t _offset, size_t _len,
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CompressionType _compression, PinnableSlice* _result,
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Status* _status)
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: user_key(&_user_key),
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offset(_offset),
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len(_len),
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compression(_compression),
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result(_result),
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status(_status) {}
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BlobReadRequest() = default;
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BlobReadRequest(const BlobReadRequest& other) = default;
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BlobReadRequest& operator=(const BlobReadRequest& other) = default;
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};
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using BlobFileReadRequests =
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std::tuple<uint64_t /* file_number */, uint64_t /* file_size */,
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autovector<BlobReadRequest>>;
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} // namespace ROCKSDB_NAMESPACE
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