fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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110 lines
4.0 KiB
110 lines
4.0 KiB
// 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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#include "utilities/cassandra/cassandra_compaction_filter.h"
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#include <string>
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#include "rocksdb/slice.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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#include "utilities/cassandra/format.h"
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#include "utilities/cassandra/merge_operator.h"
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namespace ROCKSDB_NAMESPACE {
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namespace cassandra {
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static std::unordered_map<std::string, OptionTypeInfo>
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cassandra_filter_type_info = {
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#ifndef ROCKSDB_LITE
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{"purge_ttl_on_expiration",
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{offsetof(struct CassandraOptions, purge_ttl_on_expiration),
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OptionType::kBoolean, OptionVerificationType::kNormal,
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OptionTypeFlags::kNone}},
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{"gc_grace_period_in_seconds",
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{offsetof(struct CassandraOptions, gc_grace_period_in_seconds),
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OptionType::kUInt32T, OptionVerificationType::kNormal,
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OptionTypeFlags::kNone}},
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#endif // ROCKSDB_LITE
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};
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CassandraCompactionFilter::CassandraCompactionFilter(
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bool purge_ttl_on_expiration, int32_t gc_grace_period_in_seconds)
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: options_(gc_grace_period_in_seconds, 0, purge_ttl_on_expiration) {
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RegisterOptions(&options_, &cassandra_filter_type_info);
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}
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CompactionFilter::Decision CassandraCompactionFilter::FilterV2(
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int /*level*/, const Slice& /*key*/, ValueType value_type,
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const Slice& existing_value, std::string* new_value,
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std::string* /*skip_until*/) const {
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bool value_changed = false;
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RowValue row_value = RowValue::Deserialize(
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existing_value.data(), existing_value.size());
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RowValue compacted =
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options_.purge_ttl_on_expiration
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? row_value.RemoveExpiredColumns(&value_changed)
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: row_value.ConvertExpiredColumnsToTombstones(&value_changed);
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if (value_type == ValueType::kValue) {
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compacted = compacted.RemoveTombstones(options_.gc_grace_period_in_seconds);
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}
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if(compacted.Empty()) {
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return Decision::kRemove;
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}
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if (value_changed) {
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compacted.Serialize(new_value);
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return Decision::kChangeValue;
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}
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return Decision::kKeep;
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}
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CassandraCompactionFilterFactory::CassandraCompactionFilterFactory(
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bool purge_ttl_on_expiration, int32_t gc_grace_period_in_seconds)
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: options_(gc_grace_period_in_seconds, 0, purge_ttl_on_expiration) {
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RegisterOptions(&options_, &cassandra_filter_type_info);
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}
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std::unique_ptr<CompactionFilter>
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CassandraCompactionFilterFactory::CreateCompactionFilter(
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const CompactionFilter::Context&) {
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std::unique_ptr<CompactionFilter> result(new CassandraCompactionFilter(
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options_.purge_ttl_on_expiration, options_.gc_grace_period_in_seconds));
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return result;
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}
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#ifndef ROCKSDB_LITE
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int RegisterCassandraObjects(ObjectLibrary& library,
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const std::string& /*arg*/) {
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library.AddFactory<MergeOperator>(
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CassandraValueMergeOperator::kClassName(),
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[](const std::string& /*uri*/, std::unique_ptr<MergeOperator>* guard,
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std::string* /* errmsg */) {
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guard->reset(new CassandraValueMergeOperator(0));
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return guard->get();
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});
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library.AddFactory<CompactionFilter>(
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CassandraCompactionFilter::kClassName(),
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[](const std::string& /*uri*/,
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std::unique_ptr<CompactionFilter>* /*guard */,
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std::string* /* errmsg */) {
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return new CassandraCompactionFilter(false, 0);
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});
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library.AddFactory<CompactionFilterFactory>(
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CassandraCompactionFilterFactory::kClassName(),
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[](const std::string& /*uri*/,
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std::unique_ptr<CompactionFilterFactory>* guard,
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std::string* /* errmsg */) {
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guard->reset(new CassandraCompactionFilterFactory(false, 0));
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return guard->get();
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});
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size_t num_types;
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return static_cast<int>(library.GetFactoryCount(&num_types));
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}
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#endif // ROCKSDB_LITE
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} // namespace cassandra
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} // namespace ROCKSDB_NAMESPACE
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