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63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
#include <DB/Common/ProfileEvents.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/StorageSystemEvents.h>
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namespace DB
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{
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StorageSystemEvents::StorageSystemEvents(const std::string & name_)
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: name(name_)
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{
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columns.push_back(NameAndTypePair("event", new DataTypeString));
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columns.push_back(NameAndTypePair("value", new DataTypeUInt64));
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}
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StoragePtr StorageSystemEvents::create(const std::string & name_)
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{
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return (new StorageSystemEvents(name_))->thisPtr();
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}
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BlockInputStreams StorageSystemEvents::read(
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const Names & column_names, ASTPtr query, const Settings & settings,
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QueryProcessingStage::Enum & processed_stage, size_t max_block_size, 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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ColumnWithNameAndType col_event;
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col_event.name = "event";
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col_event.type = new DataTypeString;
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col_event.column = new ColumnString;
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block.insert(col_event);
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ColumnWithNameAndType col_value;
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col_value.name = "value";
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col_value.type = new DataTypeUInt64;
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col_value.column = new ColumnUInt64;
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block.insert(col_value);
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for (size_t i = 0; i < ProfileEvents::END; ++i)
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{
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UInt64 value = ProfileEvents::counters[i];
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if (0 != value)
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{
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col_event.column->insert(String(ProfileEvents::getDescription(ProfileEvents::Event(i))));
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col_value.column->insert(value);
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}
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}
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return BlockInputStreams(1, new OneBlockInputStream(block));
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}
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}
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