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57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
#include <DataTypes/DataTypeDate.h>
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#include <DataTypes/DataTypeDateTime.h>
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#include <DataTypes/DataTypeDateTime64.h>
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#include <DataTypes/DataTypeLowCardinality.h>
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#include <DataTypes/DataTypeString.h>
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#include <DataTypes/DataTypesNumber.h>
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#include <Interpreters/AsynchronousMetricLog.h>
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#include <Common/AsynchronousMetrics.h>
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namespace DB
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{
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NamesAndTypesList AsynchronousMetricLogElement::getNamesAndTypes()
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{
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return
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{
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{"event_date", std::make_shared<DataTypeDate>()},
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{"event_time", std::make_shared<DataTypeDateTime>()},
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{"metric", std::make_shared<DataTypeLowCardinality>(std::make_shared<DataTypeString>())},
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{"value", std::make_shared<DataTypeFloat64>(),}
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};
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}
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void AsynchronousMetricLogElement::appendToBlock(MutableColumns & columns) const
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{
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size_t column_idx = 0;
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columns[column_idx++]->insert(event_date);
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columns[column_idx++]->insert(event_time);
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columns[column_idx++]->insert(metric_name);
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columns[column_idx++]->insert(value);
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}
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void AsynchronousMetricLog::addValues(const AsynchronousMetricValues & values)
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{
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AsynchronousMetricLogElement element;
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element.event_time = time(nullptr);
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element.event_date = DateLUT::instance().toDayNum(element.event_time);
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/// We will round the values to make them compress better in the table.
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/// Note: as an alternative we can also use fixed point Decimal data type,
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/// but we need to store up to UINT64_MAX sometimes.
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static constexpr double precision = 1000.0;
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for (const auto & [key, value] : values)
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{
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element.metric_name = key;
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element.value = round(value.value * precision) / precision;
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add(element);
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}
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}
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}
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