1973fcba11
Summary: In order to support old-style regex function registration, restored the original "Register<T>(string, Factory)" method using regular expressions. The PatternEntry methods were left in place but renamed to AddFactory. The goal is to allow for the deprecation of the original regex Registry method in an upcoming release. Added modes to the PatternEntry kMatchZeroOrMore and kMatchAtLeastOne to match * or +, respectively (kMatchAtLeastOne was the original behavior). Pull Request resolved: https://github.com/facebook/rocksdb/pull/9362 Reviewed By: pdillinger Differential Revision: D33432562 Pulled By: mrambacher fbshipit-source-id: ed88ab3f9a2ad0d525c7bd1692873f9bb3209d02
91 lines
3.1 KiB
C++
91 lines
3.1 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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//
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#include "rocksdb/sst_partitioner.h"
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#include <algorithm>
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#include "rocksdb/utilities/customizable_util.h"
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#include "rocksdb/utilities/object_registry.h"
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#include "rocksdb/utilities/options_type.h"
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namespace ROCKSDB_NAMESPACE {
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static std::unordered_map<std::string, OptionTypeInfo>
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sst_fixed_prefix_type_info = {
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#ifndef ROCKSDB_LITE
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{"length",
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{0, OptionType::kSizeT, OptionVerificationType::kNormal,
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OptionTypeFlags::kNone}},
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#endif // ROCKSDB_LITE
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};
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SstPartitionerFixedPrefixFactory::SstPartitionerFixedPrefixFactory(size_t len)
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: len_(len) {
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RegisterOptions("Length", &len_, &sst_fixed_prefix_type_info);
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}
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PartitionerResult SstPartitionerFixedPrefix::ShouldPartition(
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const PartitionerRequest& request) {
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Slice last_key_fixed(*request.prev_user_key);
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if (last_key_fixed.size() > len_) {
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last_key_fixed.size_ = len_;
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}
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Slice current_key_fixed(*request.current_user_key);
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if (current_key_fixed.size() > len_) {
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current_key_fixed.size_ = len_;
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}
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return last_key_fixed.compare(current_key_fixed) != 0 ? kRequired
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: kNotRequired;
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}
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bool SstPartitionerFixedPrefix::CanDoTrivialMove(
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const Slice& smallest_user_key, const Slice& largest_user_key) {
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return ShouldPartition(PartitionerRequest(smallest_user_key, largest_user_key,
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0)) == kNotRequired;
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}
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std::unique_ptr<SstPartitioner>
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SstPartitionerFixedPrefixFactory::CreatePartitioner(
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const SstPartitioner::Context& /* context */) const {
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return std::unique_ptr<SstPartitioner>(new SstPartitionerFixedPrefix(len_));
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}
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std::shared_ptr<SstPartitionerFactory> NewSstPartitionerFixedPrefixFactory(
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size_t prefix_len) {
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return std::make_shared<SstPartitionerFixedPrefixFactory>(prefix_len);
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}
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#ifndef ROCKSDB_LITE
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namespace {
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static int RegisterSstPartitionerFactories(ObjectLibrary& library,
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const std::string& /*arg*/) {
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library.AddFactory<SstPartitionerFactory>(
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SstPartitionerFixedPrefixFactory::kClassName(),
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[](const std::string& /*uri*/,
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std::unique_ptr<SstPartitionerFactory>* guard,
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std::string* /* errmsg */) {
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guard->reset(new SstPartitionerFixedPrefixFactory(0));
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return guard->get();
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});
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return 1;
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}
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} // namespace
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#endif // ROCKSDB_LITE
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Status SstPartitionerFactory::CreateFromString(
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const ConfigOptions& options, const std::string& value,
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std::shared_ptr<SstPartitionerFactory>* result) {
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#ifndef ROCKSDB_LITE
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static std::once_flag once;
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std::call_once(once, [&]() {
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RegisterSstPartitionerFactories(*(ObjectLibrary::Default().get()), "");
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});
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#endif // ROCKSDB_LITE
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return LoadSharedObject<SstPartitionerFactory>(options, value, nullptr,
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result);
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}
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} // namespace ROCKSDB_NAMESPACE
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