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#include <Interpreters/Access/InterpreterDropAccessEntityQuery.h>
#include <Access/AccessControl.h>
#include <Access/Common/AccessRightsElement.h>
#include <Interpreters/Context.h>
#include <Interpreters/executeDDLQueryOnCluster.h>
#include <Interpreters/removeOnClusterClauseIfNeeded.h>
#include <Parsers/Access/ASTDropAccessEntityQuery.h>
#include <Parsers/Access/ASTRowPolicyName.h>
namespace DB
{
namespace ErrorCodes
{
extern const int NOT_IMPLEMENTED;
}
BlockIO InterpreterDropAccessEntityQuery::execute()
{
const auto updated_query_ptr = removeOnClusterClauseIfNeeded(query_ptr, getContext());
auto & query = updated_query_ptr->as<ASTDropAccessEntityQuery &>();
auto & access_control = getContext()->getAccessControl();
getContext()->checkAccess(getRequiredAccess());
if (!query.cluster.empty())
return executeDDLQueryOnCluster(updated_query_ptr, getContext());
query.replaceEmptyDatabase(getContext()->getCurrentDatabase());
auto do_drop = [&](const Strings & names, const String & storage_name)
{
IAccessStorage * storage = &access_control;
MultipleAccessStorage::StoragePtr storage_ptr;
if (!storage_name.empty())
{
storage_ptr = access_control.getStorageByName(storage_name);
storage = storage_ptr.get();
}
if (query.if_exists)
storage->tryRemove(storage->find(query.type, names));
else
storage->remove(storage->getIDs(query.type, names));
};
if (query.type == AccessEntityType::ROW_POLICY)
do_drop(query.row_policy_names->toStrings(), query.storage_name);
else
do_drop(query.names, query.storage_name);
return {};
}
AccessRightsElements InterpreterDropAccessEntityQuery::getRequiredAccess() const
{
const auto & query = query_ptr->as<const ASTDropAccessEntityQuery &>();
AccessRightsElements res;
switch (query.type)
{
case AccessEntityType::USER:
{
res.emplace_back(AccessType::DROP_USER);
return res;
}
case AccessEntityType::ROLE:
{
res.emplace_back(AccessType::DROP_ROLE);
return res;
}
case AccessEntityType::SETTINGS_PROFILE:
{
res.emplace_back(AccessType::DROP_SETTINGS_PROFILE);
return res;
}
case AccessEntityType::ROW_POLICY:
{
if (query.row_policy_names)
{
for (const auto & row_policy_name : query.row_policy_names->full_names)
res.emplace_back(AccessType::DROP_ROW_POLICY, row_policy_name.database, row_policy_name.table_name);
}
return res;
}
case AccessEntityType::QUOTA:
{
res.emplace_back(AccessType::DROP_QUOTA);
return res;
}
case AccessEntityType::MAX:
break;
}
throw Exception(ErrorCodes::NOT_IMPLEMENTED, "{}: type is not supported by DROP query", toString(query.type));
}
}
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