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.
|
|
// 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).
|
|
|
|
#include "utilities/cassandra/cassandra_compaction_filter.h"
|
|
#include <string>
|
|
#include "rocksdb/slice.h"
|
|
#include "utilities/cassandra/format.h"
|
|
|
|
|
|
namespace rocksdb {
|
|
namespace cassandra {
|
|
|
|
const char* CassandraCompactionFilter::Name() const {
|
|
return "CassandraCompactionFilter";
|
|
}
|
|
|
|
CompactionFilter::Decision CassandraCompactionFilter::FilterV2(
|
|
int level,
|
|
const Slice& key,
|
|
ValueType value_type,
|
|
const Slice& existing_value,
|
|
std::string* new_value,
|
|
std::string* skip_until) const {
|
|
|
|
bool value_changed = false;
|
|
RowValue row_value = RowValue::Deserialize(
|
|
existing_value.data(), existing_value.size());
|
|
RowValue compacted = purge_ttl_on_expiration_ ?
|
|
row_value.PurgeTtl(&value_changed) :
|
|
row_value.ExpireTtl(&value_changed);
|
|
|
|
if(compacted.Empty()) {
|
|
return Decision::kRemove;
|
|
}
|
|
|
|
if (value_changed) {
|
|
compacted.Serialize(new_value);
|
|
return Decision::kChangeValue;
|
|
}
|
|
|
|
return Decision::kKeep;
|
|
}
|
|
|
|
} // namespace cassandra
|
|
} // namespace rocksdb
|