534c255c7a
Summary: Major changes in this PR: * Implement CassandraCompactionFilter to remove expired columns and rows (if all column expired) * Move cassandra related code from utilities/merge_operators/cassandra to utilities/cassandra/* * Switch to use shared_ptr<> from uniqu_ptr for Column membership management in RowValue. Since columns do have multiple owners in Merge and GC process, use shared_ptr helps make RowValue immutable. * Rename cassandra_merge_test to cassandra_functional_test and add two TTL compaction related tests there. Closes https://github.com/facebook/rocksdb/pull/2588 Differential Revision: D5430010 Pulled By: wpc fbshipit-source-id: 9566c21e06de17491d486a68c70f52d501f27687
48 lines
1.2 KiB
C++
48 lines
1.2 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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#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 "utilities/cassandra/format.h"
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namespace rocksdb {
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namespace cassandra {
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const char* CassandraCompactionFilter::Name() const {
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return "CassandraCompactionFilter";
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}
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CompactionFilter::Decision CassandraCompactionFilter::FilterV2(
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int level,
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const Slice& key,
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ValueType value_type,
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const Slice& existing_value,
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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 = purge_ttl_on_expiration_ ?
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row_value.PurgeTtl(&value_changed) :
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row_value.ExpireTtl(&value_changed);
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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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} // namespace cassandra
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} // namespace rocksdb
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