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68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
#include <DB/Common/CurrentMetrics.h>
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#include <DB/Columns/ColumnString.h>
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#include <DB/DataTypes/DataTypeString.h>
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#include <DB/DataTypes/DataTypesNumberFixed.h>
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#include <DB/DataStreams/OneBlockInputStream.h>
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#include <DB/Storages/System/StorageSystemMetrics.h>
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namespace DB
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{
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StorageSystemMetrics::StorageSystemMetrics(const std::string & name_)
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: name(name_),
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columns
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{
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{"metric", std::make_shared<DataTypeString>()},
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{"value", std::make_shared<DataTypeInt64>()},
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}
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{
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}
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StoragePtr StorageSystemMetrics::create(const std::string & name_)
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{
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return make_shared(name_);
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}
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BlockInputStreams StorageSystemMetrics::read(
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const Names & column_names,
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ASTPtr query,
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const Context & context,
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const Settings & settings,
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QueryProcessingStage::Enum & processed_stage,
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const size_t max_block_size,
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const unsigned threads)
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{
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check(column_names);
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processed_stage = QueryProcessingStage::FetchColumns;
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Block block;
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ColumnWithTypeAndName col_metric;
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col_metric.name = "metric";
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col_metric.type = std::make_shared<DataTypeString>();
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col_metric.column = std::make_shared<ColumnString>();
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block.insert(col_metric);
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ColumnWithTypeAndName col_value;
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col_value.name = "value";
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col_value.type = std::make_shared<DataTypeInt64>();
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col_value.column = std::make_shared<ColumnInt64>();
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block.insert(col_value);
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for (size_t i = 0, end = CurrentMetrics::end(); i < end; ++i)
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{
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auto value = CurrentMetrics::values[i].load(std::memory_order_relaxed);
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col_metric.column->insert(String(CurrentMetrics::getDescription(CurrentMetrics::Metric(i))));
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col_value.column->insert(value);
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}
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return BlockInputStreams(1, std::make_shared<OneBlockInputStream>(block));
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}
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}
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