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97 lines
4.2 KiB
C++
97 lines
4.2 KiB
C++
#include <DB/Storages/System/StorageSystemMerges.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/Columns/ColumnString.h>
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#include <DB/DataStreams/OneBlockInputStream.h>
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#include <DB/Interpreters/Context.h>
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#include <DB/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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, columns{
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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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{ "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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}
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{
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}
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StoragePtr StorageSystemMerges::create(const std::string & name)
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{
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return (new StorageSystemMerges{name})->thisPtr();
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}
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BlockInputStreams StorageSystemMerges::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)
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{
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check(column_names);
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processed_stage = QueryProcessingStage::FetchColumns;
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ColumnWithTypeAndName col_database{std::make_shared<ColumnString>(), std::make_shared<DataTypeString>(), "database"};
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ColumnWithTypeAndName col_table{std::make_shared<ColumnString>(), std::make_shared<DataTypeString>(), "table"};
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ColumnWithTypeAndName col_elapsed{std::make_shared<ColumnFloat64>(), std::make_shared<DataTypeFloat64>(), "elapsed"};
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ColumnWithTypeAndName col_progress{std::make_shared<ColumnFloat64>(), std::make_shared<DataTypeFloat64>(), "progress"};
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ColumnWithTypeAndName col_num_parts{std::make_shared<ColumnUInt64>(), std::make_shared<DataTypeUInt64>(), "num_parts"};
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ColumnWithTypeAndName col_result_part_name{std::make_shared<ColumnString>(), std::make_shared<DataTypeString>(), "result_part_name"};
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ColumnWithTypeAndName col_total_size_bytes_compressed{std::make_shared<ColumnUInt64>(), std::make_shared<DataTypeUInt64>(), "total_size_bytes_compressed"};
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ColumnWithTypeAndName col_total_size_marks{std::make_shared<ColumnUInt64>(), std::make_shared<DataTypeUInt64>(), "total_size_marks"};
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ColumnWithTypeAndName col_bytes_read_uncompressed{std::make_shared<ColumnUInt64>(), std::make_shared<DataTypeUInt64>(), "bytes_read_uncompressed"};
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ColumnWithTypeAndName col_rows_read{std::make_shared<ColumnUInt64>(), std::make_shared<DataTypeUInt64>(), "rows_read"};
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ColumnWithTypeAndName col_bytes_written_uncompressed{std::make_shared<ColumnUInt64>(), std::make_shared<DataTypeUInt64>(), "bytes_written_uncompressed"};
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ColumnWithTypeAndName col_rows_written{std::make_shared<ColumnUInt64>(), std::make_shared<DataTypeUInt64>(), "rows_written"};
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for (const auto & merge : context.getMergeList().get())
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{
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col_database.column->insert(merge.database);
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col_table.column->insert(merge.table);
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col_elapsed.column->insert(merge.watch.elapsedSeconds());
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col_progress.column->insert(merge.progress);
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col_num_parts.column->insert(merge.num_parts);
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col_result_part_name.column->insert(merge.result_part_name);
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col_total_size_bytes_compressed.column->insert(merge.total_size_bytes_compressed);
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col_total_size_marks.column->insert(merge.total_size_marks);
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col_bytes_read_uncompressed.column->insert(merge.bytes_read_uncompressed);
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col_rows_read.column->insert(merge.rows_read);
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col_bytes_written_uncompressed.column->insert(merge.bytes_written_uncompressed);
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col_rows_written.column->insert(merge.rows_written);
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}
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Block block{
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col_database,
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col_table,
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col_elapsed,
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col_progress,
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col_num_parts,
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col_result_part_name,
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col_total_size_bytes_compressed,
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col_total_size_marks,
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col_bytes_read_uncompressed,
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col_rows_read,
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col_bytes_written_uncompressed,
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col_rows_written
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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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