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76 lines
3.2 KiB
C++
76 lines
3.2 KiB
C++
#include <Storages/System/StorageSystemMerges.h>
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#include <DataTypes/DataTypeString.h>
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#include <DataTypes/DataTypesNumber.h>
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#include <DataTypes/DataTypeArray.h>
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#include <Columns/ColumnString.h>
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#include <DataStreams/OneBlockInputStream.h>
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#include <Interpreters/Context.h>
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#include <Storages/MergeTree/MergeList.h>
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namespace DB
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{
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StorageSystemMerges::StorageSystemMerges(const std::string & name)
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: name{name}
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{
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columns.ordinary = NamesAndTypesList{
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{ "database", std::make_shared<DataTypeString>() },
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{ "table", std::make_shared<DataTypeString>() },
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{ "elapsed", std::make_shared<DataTypeFloat64>() },
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{ "progress", std::make_shared<DataTypeFloat64>() },
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{ "num_parts", std::make_shared<DataTypeUInt64>() },
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{ "source_part_names", std::make_shared<DataTypeArray>(std::make_shared<DataTypeString>()) },
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{ "result_part_name", std::make_shared<DataTypeString>() },
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{ "total_size_bytes_compressed", std::make_shared<DataTypeUInt64>() },
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{ "total_size_marks", std::make_shared<DataTypeUInt64>() },
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{ "bytes_read_uncompressed", std::make_shared<DataTypeUInt64>() },
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{ "rows_read", std::make_shared<DataTypeUInt64>() },
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{ "bytes_written_uncompressed", std::make_shared<DataTypeUInt64>() },
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{ "rows_written", std::make_shared<DataTypeUInt64>() },
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{ "columns_written", std::make_shared<DataTypeUInt64>() },
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{ "memory_usage", std::make_shared<DataTypeUInt64>() },
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{ "thread_number", std::make_shared<DataTypeUInt64>() },
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};
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}
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BlockInputStreams StorageSystemMerges::read(
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const Names & column_names,
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const SelectQueryInfo &,
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const Context & context,
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QueryProcessingStage::Enum & processed_stage,
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const size_t,
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const unsigned)
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{
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check(column_names);
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processed_stage = QueryProcessingStage::FetchColumns;
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MutableColumns res_columns = getSampleBlock().cloneEmptyColumns();
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for (const auto & merge : context.getMergeList().get())
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{
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size_t i = 0;
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res_columns[i++]->insert(merge.database);
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res_columns[i++]->insert(merge.table);
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res_columns[i++]->insert(merge.elapsed);
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res_columns[i++]->insert(merge.progress);
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res_columns[i++]->insert(merge.num_parts);
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res_columns[i++]->insert(merge.source_part_names);
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res_columns[i++]->insert(merge.result_part_name);
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res_columns[i++]->insert(merge.total_size_bytes_compressed);
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res_columns[i++]->insert(merge.total_size_marks);
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res_columns[i++]->insert(merge.bytes_read_uncompressed);
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res_columns[i++]->insert(merge.rows_read);
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res_columns[i++]->insert(merge.bytes_written_uncompressed);
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res_columns[i++]->insert(merge.rows_written);
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res_columns[i++]->insert(merge.columns_written);
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res_columns[i++]->insert(merge.memory_usage);
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res_columns[i++]->insert(merge.thread_number);
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}
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return BlockInputStreams(1, std::make_shared<OneBlockInputStream>(getSampleBlock().cloneWithColumns(std::move(res_columns))));
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}
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}
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