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#include <Storages/System/StorageSystemGraphite.h>
#include <Storages/MergeTree/MergeTreeData.h>
#include <Interpreters/Context.h>
namespace DB
{
NamesAndTypesList StorageSystemGraphite::getNamesAndTypes()
{
return {
{"config_name", std::make_shared<DataTypeString>()},
{"rule_type", std::make_shared<DataTypeString>()},
{"regexp", std::make_shared<DataTypeString>()},
{"function", std::make_shared<DataTypeString>()},
{"age", std::make_shared<DataTypeUInt64>()},
{"precision", std::make_shared<DataTypeUInt64>()},
{"priority", std::make_shared<DataTypeUInt16>()},
{"is_default", std::make_shared<DataTypeUInt8>()},
{"Tables.database", std::make_shared<DataTypeArray>(std::make_shared<DataTypeString>())},
{"Tables.table", std::make_shared<DataTypeArray>(std::make_shared<DataTypeString>())},
};
}
/*
* Looking for (Replicated)*GraphiteMergeTree and get all configuration parameters for them
*/
static StorageSystemGraphite::Configs getConfigs(ContextPtr context)
{
const Databases databases = DatabaseCatalog::instance().getDatabases();
StorageSystemGraphite::Configs graphite_configs;
for (const auto & db : databases)
{
/// Check if database can contain MergeTree tables
if (!db.second->canContainMergeTreeTables())
continue;
for (auto iterator = db.second->getTablesIterator(context); iterator->isValid(); iterator->next())
{
const auto & table = iterator->table();
if (!table)
continue;
const MergeTreeData * table_data = dynamic_cast<const MergeTreeData *>(table.get());
if (!table_data)
continue;
if (table_data->merging_params.mode == MergeTreeData::MergingParams::Graphite)
{
const String & config_name = table_data->merging_params.graphite_params.config_name;
auto table_id = table_data->getStorageID();
if (!graphite_configs.contains(config_name))
{
StorageSystemGraphite::Config new_config =
{
table_data->merging_params.graphite_params,
{ table_id.database_name },
{ table_id.table_name },
};
graphite_configs.emplace(config_name, new_config);
}
else
{
graphite_configs[config_name].databases.emplace_back(table_id.database_name);
graphite_configs[config_name].tables.emplace_back(table_id.table_name);
}
}
}
}
return graphite_configs;
}
void StorageSystemGraphite::fillData(MutableColumns & res_columns, ContextPtr context, const SelectQueryInfo &) const
{
Configs graphite_configs = getConfigs(context);
for (const auto & config : graphite_configs)
{
UInt16 priority = 0;
for (const auto & pattern : config.second.graphite_params.patterns)
{
bool is_default = pattern.regexp == nullptr;
String regexp;
String function;
const String & rule_type = ruleTypeStr(pattern.rule_type);
if (is_default)
{
priority = std::numeric_limits<UInt16>::max();
}
else
{
priority++;
regexp = pattern.regexp_str;
}
if (pattern.function)
{
function = pattern.function->getName();
}
if (!pattern.retentions.empty())
{
for (const auto & retention : pattern.retentions)
{
size_t i = 0;
res_columns[i++]->insert(config.first);
res_columns[i++]->insert(rule_type);
res_columns[i++]->insert(regexp);
res_columns[i++]->insert(function);
res_columns[i++]->insert(retention.age);
res_columns[i++]->insert(retention.precision);
res_columns[i++]->insert(priority);
res_columns[i++]->insert(is_default);
res_columns[i++]->insert(config.second.databases);
res_columns[i++]->insert(config.second.tables);
}
}
else
{
size_t i = 0;
res_columns[i++]->insert(config.first);
res_columns[i++]->insert(rule_type);
res_columns[i++]->insert(regexp);
res_columns[i++]->insert(function);
res_columns[i++]->insertDefault();
res_columns[i++]->insertDefault();
res_columns[i++]->insert(priority);
res_columns[i++]->insert(is_default);
res_columns[i++]->insert(config.second.databases);
res_columns[i++]->insert(config.second.tables);
}
}
}
}
}
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