a9646dd779
There are few schema altering statements that need to have the query processor inside lambda continuations. Fortunately, they all are continuations of make_ready_future<>()s, so the query processor can be simply captured by reference and used. Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
105 lines
3.6 KiB
C++
105 lines
3.6 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Copyright (C) 2015 ScyllaDB
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*
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* Modified by ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "cql3/statements/drop_table_statement.hh"
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#include "cql3/statements/prepared_statement.hh"
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#include "cql3/query_processor.hh"
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#include "service/migration_manager.hh"
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namespace cql3 {
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namespace statements {
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drop_table_statement::drop_table_statement(cf_name cf_name, bool if_exists)
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: schema_altering_statement{std::move(cf_name), &timeout_config::truncate_timeout}
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, _if_exists{if_exists}
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{
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}
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future<> drop_table_statement::check_access(service::storage_proxy& proxy, const service::client_state& state) const
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{
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// invalid_request_exception is only thrown synchronously.
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try {
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return state.has_column_family_access(proxy.local_db(), keyspace(), column_family(), auth::permission::DROP);
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} catch (exceptions::invalid_request_exception&) {
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if (!_if_exists) {
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throw;
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}
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return make_ready_future();
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}
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}
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void drop_table_statement::validate(service::storage_proxy&, const service::client_state& state) const
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{
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// validated in announce_migration()
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}
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future<shared_ptr<cql_transport::event::schema_change>> drop_table_statement::announce_migration(query_processor& qp) const
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{
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return make_ready_future<>().then([this, &mm = qp.get_migration_manager()] {
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return mm.announce_column_family_drop(keyspace(), column_family());
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}).then_wrapped([this] (auto&& f) {
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try {
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f.get();
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using namespace cql_transport;
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return ::make_shared<event::schema_change>(
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event::schema_change::change_type::DROPPED,
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event::schema_change::target_type::TABLE,
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this->keyspace(),
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this->column_family());
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} catch (const exceptions::configuration_exception& e) {
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if (_if_exists) {
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return ::shared_ptr<cql_transport::event::schema_change>();
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}
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throw e;
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}
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});
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}
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std::unique_ptr<cql3::statements::prepared_statement>
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drop_table_statement::prepare(database& db, cql_stats& stats) {
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return std::make_unique<prepared_statement>(make_shared<drop_table_statement>(*this));
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}
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}
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}
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