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45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
#pragma once
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#include <Processors/IAccumulatingTransform.h>
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#include <Storages/MergeTree/MergeTreeData.h>
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#include <Storages/MergeTree/IMergeTreeDataPart.h>
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#include <Core/Block.h>
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#include <Storages/MergeTree/MergeTreeDataPartTTLInfo.h>
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#include <Processors/TTL/ITTLAlgorithm.h>
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#include <base/DateLUT.h>
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namespace DB
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{
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class TTLCalcTransform : public IAccumulatingTransform
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{
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public:
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TTLCalcTransform(
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const Block & header_,
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const MergeTreeData & storage_,
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const StorageMetadataPtr & metadata_snapshot_,
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const MergeTreeData::MutableDataPartPtr & data_part_,
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time_t current_time,
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bool force_
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);
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String getName() const override { return "TTL_CALC"; }
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Status prepare() override;
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protected:
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void consume(Chunk chunk) override;
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Chunk generate() override;
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/// Finalizes ttl infos and updates data part
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void finalize();
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private:
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std::vector<TTLAlgorithmPtr> algorithms;
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/// ttl_infos and empty_columns are updating while reading
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const MergeTreeData::MutableDataPartPtr & data_part;
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Poco::Logger * log;
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};
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}
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