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34 lines
1001 B
C++
34 lines
1001 B
C++
#pragma once
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#include <ext/shared_ptr_helper.h>
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#include <Storages/System/IStorageSystemOneBlock.h>
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namespace DB
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{
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class AsynchronousMetrics;
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class Context;
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/** Implements system table asynchronous_metrics, which allows to get values of periodically (asynchronously) updated metrics.
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*/
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class StorageSystemAsynchronousMetrics final : public ext::shared_ptr_helper<StorageSystemAsynchronousMetrics>,
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public IStorageSystemOneBlock<StorageSystemAsynchronousMetrics>
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{
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friend struct ext::shared_ptr_helper<StorageSystemAsynchronousMetrics>;
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public:
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std::string getName() const override { return "SystemAsynchronousMetrics"; }
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static NamesAndTypesList getNamesAndTypes();
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private:
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const AsynchronousMetrics & async_metrics;
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protected:
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StorageSystemAsynchronousMetrics(const std::string & name_, const AsynchronousMetrics & async_metrics_);
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void fillData(MutableColumns & res_columns, const Context & context, const SelectQueryInfo & query_info) const override;
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};
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}
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