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53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
#pragma once
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#include <Storages/IStorage.h>
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#include <Processors/Sources/ShellCommandSource.h>
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#include <Storages/ExecutableSettings.h>
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namespace DB
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{
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/**
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* This class represents table engine for external executable files.
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* Executable storage that will start process for read.
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* ExecutablePool storage maintain pool of processes and take process from pool for read.
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*/
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class StorageExecutable final : public IStorage
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{
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public:
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StorageExecutable(
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const StorageID & table_id,
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const String & format,
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const ExecutableSettings & settings,
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const std::vector<ASTPtr> & input_queries,
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const ColumnsDescription & columns,
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const ConstraintsDescription & constraints);
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String getName() const override
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{
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if (settings.is_executable_pool)
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return "ExecutablePool";
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else
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return "Executable";
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}
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void read(
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QueryPlan & query_plan,
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const Names & column_names,
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const StorageSnapshotPtr & /*storage_snapshot*/,
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SelectQueryInfo & query_info,
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ContextPtr context,
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QueryProcessingStage::Enum processed_stage,
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size_t max_block_size,
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size_t threads) override;
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private:
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ExecutableSettings settings;
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std::vector<ASTPtr> input_queries;
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LoggerPtr log;
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std::unique_ptr<ShellCommandSourceCoordinator> coordinator;
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};
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}
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