fdf882ded2
Summary: When dynamically linking two binaries together, different builds of RocksDB from two sources might cause errors. To provide a tool for user to solve the problem, the RocksDB namespace is changed to a flag which can be overridden in build time. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6433 Test Plan: Build release, all and jtest. Try to build with ROCKSDB_NAMESPACE with another flag. Differential Revision: D19977691 fbshipit-source-id: aa7f2d0972e1c31d75339ac48478f34f6cfcfb3e
48 lines
1.4 KiB
C++
48 lines
1.4 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_NAMESPACE {
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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*/, 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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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(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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} // namespace cassandra
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} // namespace ROCKSDB_NAMESPACE
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