625080b414
Now that it also handles large rows, rename it to large_data_handler. Signed-off-by: Rafael Ávila de Espíndola <espindola@scylladb.com>
100 lines
4.0 KiB
C++
100 lines
4.0 KiB
C++
/*
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* Copyright (C) 2018 ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <cstdint>
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#include "schema.hh"
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namespace sstables {
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class sstable;
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class key;
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}
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namespace db {
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class large_data_handler {
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public:
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struct stats {
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int64_t partitions_bigger_than_threshold = 0; // number of large partition updates exceeding threshold_bytes
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};
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private:
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uint64_t _partition_threshold_bytes;
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uint64_t _row_threshold_bytes;
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mutable large_data_handler::stats _stats;
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public:
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explicit large_data_handler(uint64_t partition_threshold_bytes, uint64_t row_threshold_bytes)
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: _partition_threshold_bytes(partition_threshold_bytes)
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, _row_threshold_bytes(row_threshold_bytes) {}
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virtual ~large_data_handler() {}
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void maybe_log_large_row(const sstables::sstable& sst, const sstables::key& partition_key,
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const clustering_key_prefix* clustering_key, uint64_t row_size) const {
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if (__builtin_expect(row_size > _row_threshold_bytes, false)) {
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log_large_row(sst, partition_key, clustering_key, row_size);
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}
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}
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future<> maybe_update_large_partitions(const sstables::sstable& sst, const sstables::key& partition_key, uint64_t partition_size) const;
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future<> maybe_delete_large_partitions_entry(const sstables::sstable& sst) const;
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const large_data_handler::stats& stats() const { return _stats; }
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protected:
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virtual void log_large_row(const sstables::sstable& sst, const sstables::key& partition_key, const clustering_key_prefix* clustering_key, uint64_t row_size) const = 0;
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virtual future<> update_large_partitions(const schema& s, const sstring& sstable_name, const sstables::key& partition_key, uint64_t partition_size) const = 0;
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virtual future<> delete_large_partitions_entry(const schema& s, const sstring& sstable_name) const = 0;
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};
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class cql_table_large_data_handler : public large_data_handler {
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protected:
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static logging::logger large_data_logger;
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public:
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explicit cql_table_large_data_handler(uint64_t partition_threshold_bytes, uint64_t row_threshold_bytes)
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: large_data_handler(partition_threshold_bytes, row_threshold_bytes) {}
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protected:
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virtual future<> update_large_partitions(const schema& s, const sstring& sstable_name, const sstables::key& partition_key, uint64_t partition_size) const override;
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virtual future<> delete_large_partitions_entry(const schema& s, const sstring& sstable_name) const override;
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virtual void log_large_row(const sstables::sstable& sst, const sstables::key& partition_key, const clustering_key_prefix* clustering_key, uint64_t row_size) const override;
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};
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class nop_large_data_handler : public large_data_handler {
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public:
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nop_large_data_handler()
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: large_data_handler(std::numeric_limits<uint64_t>::max(), std::numeric_limits<uint64_t>::max()) {}
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virtual future<> update_large_partitions(const schema& s, const sstring& sstable_name, const sstables::key& partition_key, uint64_t partition_size) const override {
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return make_ready_future<>();
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}
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virtual future<> delete_large_partitions_entry(const schema& s, const sstring& sstable_name) const override {
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return make_ready_future<>();
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}
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virtual void log_large_row(const sstables::sstable& sst, const sstables::key& partition_key,
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const clustering_key_prefix* clustering_key, uint64_t row_size) const override {}
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};
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}
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