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// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include <memory>
#include "rocksdb/compaction_filter.h"
#include "rocksdb/options.h"
#include "rocksdb/utilities/customizable_util.h"
#include "rocksdb/utilities/options_type.h"
#include "utilities/compaction_filters/layered_compaction_filter_base.h"
#include "utilities/compaction_filters/remove_emptyvalue_compactionfilter.h"
namespace ROCKSDB_NAMESPACE {
#ifndef ROCKSDB_LITE
static int RegisterBuiltinCompactionFilters(ObjectLibrary& library,
const std::string& /*arg*/) {
library.AddFactory<CompactionFilter>(
RemoveEmptyValueCompactionFilter::kClassName(),
[](const std::string& /*uri*/,
std::unique_ptr<CompactionFilter>* /*guard*/,
std::string* /*errmsg*/) {
return new RemoveEmptyValueCompactionFilter();
});
return 1;
}
#endif // ROCKSDB_LITE
Status CompactionFilter::CreateFromString(const ConfigOptions& config_options,
const std::string& value,
const CompactionFilter** result) {
#ifndef ROCKSDB_LITE
static std::once_flag once;
std::call_once(once, [&]() {
RegisterBuiltinCompactionFilters(*(ObjectLibrary::Default().get()), "");
});
#endif // ROCKSDB_LITE
CompactionFilter* filter = const_cast<CompactionFilter*>(*result);
Status status = LoadStaticObject<CompactionFilter>(config_options, value,
nullptr, &filter);
if (status.ok()) {
*result = const_cast<CompactionFilter*>(filter);
}
return status;
}
Status CompactionFilterFactory::CreateFromString(
const ConfigOptions& config_options, const std::string& value,
std::shared_ptr<CompactionFilterFactory>* result) {
// Currently there are no builtin CompactionFilterFactories.
// If any are introduced, they need to be registered here.
Status status = LoadSharedObject<CompactionFilterFactory>(
config_options, value, nullptr, result);
return status;
}
} // namespace ROCKSDB_NAMESPACE
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