Adding upstream version 14.2.21.upstream/14.2.21upstream

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

1 files changed, 138 insertions, 0 deletions

diff --git a/src/rocksdb/table/plain_table_builder.h b/src/rocksdb/table/plain_table_builder.h
new file mode 100644
index 00000000..ca0879a4
--- /dev/null
+++ b/src/rocksdb/table/plain_table_builder.h
@@ -0,0 +1,138 @@
+//  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).
+
+#pragma once
+#ifndef ROCKSDB_LITE
+#include <stdint.h>
+#include <string>
+#include <vector>
+#include "rocksdb/options.h"
+#include "rocksdb/status.h"
+#include "rocksdb/table.h"
+#include "rocksdb/table_properties.h"
+#include "table/bloom_block.h"
+#include "table/plain_table_index.h"
+#include "table/plain_table_key_coding.h"
+#include "table/table_builder.h"
+
+namespace rocksdb {
+
+class BlockBuilder;
+class BlockHandle;
+class WritableFile;
+class TableBuilder;
+
+class PlainTableBuilder: public TableBuilder {
+ public:
+  // Create a builder that will store the contents of the table it is
+  // building in *file.  Does not close the file.  It is up to the
+  // caller to close the file after calling Finish(). The output file
+  // will be part of level specified by 'level'.  A value of -1 means
+  // that the caller does not know which level the output file will reside.
+  PlainTableBuilder(
+      const ImmutableCFOptions& ioptions, const MutableCFOptions& moptions,
+      const std::vector<std::unique_ptr<IntTblPropCollectorFactory>>*
+          int_tbl_prop_collector_factories,
+      uint32_t column_family_id, WritableFileWriter* file,
+      uint32_t user_key_size, EncodingType encoding_type,
+      size_t index_sparseness, uint32_t bloom_bits_per_key,
+      const std::string& column_family_name, uint32_t num_probes = 6,
+      size_t huge_page_tlb_size = 0, double hash_table_ratio = 0,
+      bool store_index_in_file = false);
+
+  // REQUIRES: Either Finish() or Abandon() has been called.
+  ~PlainTableBuilder();
+
+  // Add key,value to the table being constructed.
+  // REQUIRES: key is after any previously added key according to comparator.
+  // REQUIRES: Finish(), Abandon() have not been called
+  void Add(const Slice& key, const Slice& value) override;
+
+  // Return non-ok iff some error has been detected.
+  Status status() const override;
+
+  // Finish building the table.  Stops using the file passed to the
+  // constructor after this function returns.
+  // REQUIRES: Finish(), Abandon() have not been called
+  Status Finish() override;
+
+  // Indicate that the contents of this builder should be abandoned.  Stops
+  // using the file passed to the constructor after this function returns.
+  // If the caller is not going to call Finish(), it must call Abandon()
+  // before destroying this builder.
+  // REQUIRES: Finish(), Abandon() have not been called
+  void Abandon() override;
+
+  // Number of calls to Add() so far.
+  uint64_t NumEntries() const override;
+
+  // Size of the file generated so far.  If invoked after a successful
+  // Finish() call, returns the size of the final generated file.
+  uint64_t FileSize() const override;
+
+  TableProperties GetTableProperties() const override { return properties_; }
+
+  bool SaveIndexInFile() const { return store_index_in_file_; }
+
+ private:
+  Arena arena_;
+  const ImmutableCFOptions& ioptions_;
+  const MutableCFOptions& moptions_;
+  std::vector<std::unique_ptr<IntTblPropCollector>>
+      table_properties_collectors_;
+
+  BloomBlockBuilder bloom_block_;
+  std::unique_ptr<PlainTableIndexBuilder> index_builder_;
+
+  WritableFileWriter* file_;
+  uint64_t offset_ = 0;
+  uint32_t bloom_bits_per_key_;
+  size_t huge_page_tlb_size_;
+  Status status_;
+  TableProperties properties_;
+  PlainTableKeyEncoder encoder_;
+
+  bool store_index_in_file_;
+
+  std::vector<uint32_t> keys_or_prefixes_hashes_;
+  bool closed_ = false;  // Either Finish() or Abandon() has been called.
+
+  const SliceTransform* prefix_extractor_;
+
+  Slice GetPrefix(const Slice& target) const {
+    assert(target.size() >= 8);  // target is internal key
+    return GetPrefixFromUserKey(GetUserKey(target));
+  }
+
+  Slice GetPrefix(const ParsedInternalKey& target) const {
+    return GetPrefixFromUserKey(target.user_key);
+  }
+
+  Slice GetUserKey(const Slice& key) const {
+    return Slice(key.data(), key.size() - 8);
+  }
+
+  Slice GetPrefixFromUserKey(const Slice& user_key) const {
+    if (!IsTotalOrderMode()) {
+      return prefix_extractor_->Transform(user_key);
+    } else {
+      // Use empty slice as prefix if prefix_extractor is not set.
+      // In that case,
+      // it falls back to pure binary search and
+      // total iterator seek is supported.
+      return Slice();
+    }
+  }
+
+  bool IsTotalOrderMode() const { return (prefix_extractor_ == nullptr); }
+
+  // No copying allowed
+  PlainTableBuilder(const PlainTableBuilder&) = delete;
+  void operator=(const PlainTableBuilder&) = delete;
+};
+
+}  // namespace rocksdb
+
+#endif  // ROCKSDB_LITE