mirror of
https://github.com/scylladb/scylladb.git
synced 2026-04-20 16:40:35 +00:00
90346236ac
cql_statement is a class representing a prepared statement in Scylla. It is used concurrently during execution, so it is important that its change is not changed by execution. Add const qualifier to the execution methods family, throghout the cql hierarchy. Mark a few places which do mutate prepared statement state during execution as mutable. While these are not affecting production today, as code ages, they may become a source of latent bugs and should be moved out of the prepared state or evaluated at prepare eventually: cf_property_defs::_compaction_strategy_class list_permissions_statement::_resource permission_altering_statement::_resource property_definitions::_properties select_statement::_opts
126 lines
4.4 KiB
C++
126 lines
4.4 KiB
C++
/*
|
|
* Licensed to the Apache Software Foundation (ASF) under one
|
|
* or more contributor license agreements. See the NOTICE file
|
|
* distributed with this work for additional information
|
|
* regarding copyright ownership. The ASF licenses this file
|
|
* to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance
|
|
* with the License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2015 ScyllaDB
|
|
*
|
|
* Modified by ScyllaDB
|
|
*/
|
|
|
|
/*
|
|
* This file is part of Scylla.
|
|
*
|
|
* Scylla is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Scylla is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "cql3/statements/schema_altering_statement.hh"
|
|
|
|
#include "transport/messages/result_message.hh"
|
|
|
|
namespace cql3 {
|
|
|
|
namespace statements {
|
|
|
|
schema_altering_statement::schema_altering_statement(timeout_config_selector timeout_selector)
|
|
: cf_statement{::shared_ptr<cf_name>{}}
|
|
, cql_statement_no_metadata(timeout_selector)
|
|
, _is_column_family_level{false}
|
|
{
|
|
}
|
|
|
|
schema_altering_statement::schema_altering_statement(::shared_ptr<cf_name> name, timeout_config_selector timeout_selector)
|
|
: cf_statement{std::move(name)}
|
|
, cql_statement_no_metadata(timeout_selector)
|
|
, _is_column_family_level{true}
|
|
{
|
|
}
|
|
|
|
future<> schema_altering_statement::grant_permissions_to_creator(const service::client_state&) const {
|
|
return make_ready_future<>();
|
|
}
|
|
|
|
bool schema_altering_statement::uses_function(const sstring& ks_name, const sstring& function_name) const
|
|
{
|
|
return cf_statement::uses_function(ks_name, function_name);
|
|
}
|
|
|
|
bool schema_altering_statement::depends_on_keyspace(const sstring& ks_name) const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool schema_altering_statement::depends_on_column_family(const sstring& cf_name) const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
uint32_t schema_altering_statement::get_bound_terms() const
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void schema_altering_statement::prepare_keyspace(const service::client_state& state)
|
|
{
|
|
if (_is_column_family_level) {
|
|
cf_statement::prepare_keyspace(state);
|
|
}
|
|
}
|
|
|
|
future<::shared_ptr<messages::result_message>>
|
|
schema_altering_statement::execute0(service::storage_proxy& proxy, service::query_state& state, const query_options& options, bool is_local_only) const {
|
|
// If an IF [NOT] EXISTS clause was used, this may not result in an actual schema change. To avoid doing
|
|
// extra work in the drivers to handle schema changes, we return an empty message in this case. (CASSANDRA-7600)
|
|
return announce_migration(proxy, is_local_only).then([this] (auto ce) {
|
|
::shared_ptr<messages::result_message> result;
|
|
if (!ce) {
|
|
result = ::make_shared<messages::result_message::void_message>();
|
|
} else {
|
|
result = ::make_shared<messages::result_message::schema_change>(ce);
|
|
}
|
|
return make_ready_future<::shared_ptr<messages::result_message>>(result);
|
|
});
|
|
}
|
|
|
|
future<::shared_ptr<messages::result_message>>
|
|
schema_altering_statement::execute(service::storage_proxy& proxy, service::query_state& state, const query_options& options) const {
|
|
bool internal = state.get_client_state().is_internal();
|
|
return execute0(proxy, state, options, internal).then([this, &state, internal](::shared_ptr<messages::result_message> result) {
|
|
auto permissions_granted_fut = internal
|
|
? make_ready_future<>()
|
|
: grant_permissions_to_creator(state.get_client_state());
|
|
return permissions_granted_fut.then([result = std::move(result)] {
|
|
return result;
|
|
});
|
|
});
|
|
}
|
|
|
|
}
|
|
|
|
}
|