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#include <Storages/System/StorageSystemMutations.h>
#include <DataTypes/DataTypeString.h>
#include <DataTypes/DataTypesNumber.h>
#include <DataTypes/DataTypeDateTime.h>
#include <DataTypes/DataTypeArray.h>
#include <Storages/MergeTree/MergeTreeData.h>
#include <Storages/MergeTree/MergeTreeMutationStatus.h>
#include <Storages/VirtualColumnUtils.h>
#include <Access/ContextAccess.h>
#include <Databases/IDatabase.h>
#include <Interpreters/Context.h>
namespace DB
{
NamesAndTypesList StorageSystemMutations::getNamesAndTypes()
{
return {
{ "database", std::make_shared<DataTypeString>() },
{ "table", std::make_shared<DataTypeString>() },
{ "mutation_id", std::make_shared<DataTypeString>() },
{ "command", std::make_shared<DataTypeString>() },
{ "create_time", std::make_shared<DataTypeDateTime>() },
{ "block_numbers.partition_id", std::make_shared<DataTypeArray>(std::make_shared<DataTypeString>()) },
{ "block_numbers.number", std::make_shared<DataTypeArray>(std::make_shared<DataTypeInt64>()) },
{ "parts_to_do_names", std::make_shared<DataTypeArray>(std::make_shared<DataTypeString>()) },
{ "parts_to_do", std::make_shared<DataTypeInt64>() },
{ "is_done", std::make_shared<DataTypeUInt8>() },
{ "latest_failed_part", std::make_shared<DataTypeString>() },
{ "latest_fail_time", std::make_shared<DataTypeDateTime>() },
{ "latest_fail_reason", std::make_shared<DataTypeString>() },
};
}
void StorageSystemMutations::fillData(MutableColumns & res_columns, ContextPtr context, const SelectQueryInfo & query_info) const
{
const auto access = context->getAccess();
const bool check_access_for_databases = !access->isGranted(AccessType::SHOW_TABLES);
/// Collect a set of *MergeTree tables.
std::map<String, std::map<String, StoragePtr>> merge_tree_tables;
for (const auto & db : DatabaseCatalog::instance().getDatabases())
{
/// Check if database can contain MergeTree tables
if (!db.second->canContainMergeTreeTables())
continue;
const bool check_access_for_tables = check_access_for_databases && !access->isGranted(AccessType::SHOW_TABLES, db.first);
for (auto iterator = db.second->getTablesIterator(context); iterator->isValid(); iterator->next())
{
const auto & table = iterator->table();
if (!table)
continue;
if (!dynamic_cast<const MergeTreeData *>(table.get()))
continue;
if (check_access_for_tables && !access->isGranted(AccessType::SHOW_TABLES, db.first, iterator->name()))
continue;
merge_tree_tables[db.first][iterator->name()] = table;
}
}
MutableColumnPtr col_database_mut = ColumnString::create();
MutableColumnPtr col_table_mut = ColumnString::create();
for (auto & db : merge_tree_tables)
{
for (auto & table : db.second)
{
col_database_mut->insert(db.first);
col_table_mut->insert(table.first);
}
}
ColumnPtr col_database = std::move(col_database_mut);
ColumnPtr col_table = std::move(col_table_mut);
/// Determine what tables are needed by the conditions in the query.
{
Block filtered_block
{
{ col_database, std::make_shared<DataTypeString>(), "database" },
{ col_table, std::make_shared<DataTypeString>(), "table" },
};
VirtualColumnUtils::filterBlockWithQuery(query_info.query, filtered_block, context);
if (!filtered_block.rows())
return;
col_database = filtered_block.getByName("database").column;
col_table = filtered_block.getByName("table").column;
}
for (size_t i_storage = 0; i_storage < col_database->size(); ++i_storage)
{
auto database = (*col_database)[i_storage].safeGet<String>();
auto table = (*col_table)[i_storage].safeGet<String>();
std::vector<MergeTreeMutationStatus> statuses;
{
const IStorage * storage = merge_tree_tables[database][table].get();
if (const auto * merge_tree = dynamic_cast<const MergeTreeData *>(storage))
statuses = merge_tree->getMutationsStatus();
}
for (const MergeTreeMutationStatus & status : statuses)
{
Array block_partition_ids;
block_partition_ids.reserve(status.block_numbers.size());
Array block_numbers;
block_numbers.reserve(status.block_numbers.size());
for (const auto & pair : status.block_numbers)
{
block_partition_ids.emplace_back(pair.first);
block_numbers.emplace_back(pair.second);
}
Array parts_to_do_names;
parts_to_do_names.reserve(status.parts_to_do_names.size());
for (const String & part_name : status.parts_to_do_names)
parts_to_do_names.emplace_back(part_name);
size_t col_num = 0;
res_columns[col_num++]->insert(database);
res_columns[col_num++]->insert(table);
res_columns[col_num++]->insert(status.id);
res_columns[col_num++]->insert(status.command);
res_columns[col_num++]->insert(UInt64(status.create_time));
res_columns[col_num++]->insert(block_partition_ids);
res_columns[col_num++]->insert(block_numbers);
res_columns[col_num++]->insert(parts_to_do_names);
res_columns[col_num++]->insert(parts_to_do_names.size());
res_columns[col_num++]->insert(status.is_done);
res_columns[col_num++]->insert(status.latest_failed_part);
res_columns[col_num++]->insert(UInt64(status.latest_fail_time));
res_columns[col_num++]->insert(status.latest_fail_reason);
}
}
}
}
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