1e8f0963f9
Now when the only call to .announce_migration gas the query processor at hands -- pass it to the real statements. Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
136 lines
4.9 KiB
C++
136 lines
4.9 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/schema_altering_statement.hh"
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#include "locator/abstract_replication_strategy.hh"
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#include "database.hh"
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#include "cql3/query_processor.hh"
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#include "transport/messages/result_message.hh"
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namespace cql3 {
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namespace statements {
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schema_altering_statement::schema_altering_statement(timeout_config_selector timeout_selector)
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: cf_statement(cf_name())
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, cql_statement_no_metadata(timeout_selector)
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, _is_column_family_level{false}
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{
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}
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schema_altering_statement::schema_altering_statement(cf_name name, timeout_config_selector timeout_selector)
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: cf_statement{std::move(name)}
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, cql_statement_no_metadata(timeout_selector)
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, _is_column_family_level{true}
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{
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}
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future<> schema_altering_statement::grant_permissions_to_creator(const service::client_state&) const {
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return make_ready_future<>();
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}
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bool schema_altering_statement::depends_on_keyspace(const sstring& ks_name) const
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{
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return false;
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}
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bool schema_altering_statement::depends_on_column_family(const sstring& cf_name) const
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{
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return false;
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}
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uint32_t schema_altering_statement::get_bound_terms() const
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{
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return 0;
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}
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void schema_altering_statement::prepare_keyspace(const service::client_state& state)
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{
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if (_is_column_family_level) {
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cf_statement::prepare_keyspace(state);
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}
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}
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future<::shared_ptr<messages::result_message>>
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schema_altering_statement::execute0(query_processor& qp, service::query_state& state, const query_options& options) const {
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// If an IF [NOT] EXISTS clause was used, this may not result in an actual schema change. To avoid doing
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// extra work in the drivers to handle schema changes, we return an empty message in this case. (CASSANDRA-7600)
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return announce_migration(qp).then([this] (auto ce) {
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::shared_ptr<messages::result_message> result;
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if (!ce) {
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result = ::make_shared<messages::result_message::void_message>();
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} else {
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result = ::make_shared<messages::result_message::schema_change>(ce);
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}
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return make_ready_future<::shared_ptr<messages::result_message>>(result);
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});
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}
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future<::shared_ptr<messages::result_message>>
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schema_altering_statement::execute(query_processor& qp, service::query_state& state, const query_options& options) const {
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bool internal = state.get_client_state().is_internal();
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if (internal) {
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auto replication_type = locator::replication_strategy_type::everywhere_topology;
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database& db = qp.db();
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if (_cf_name && _cf_name->has_keyspace()) {
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const auto& ks = db.find_keyspace(_cf_name->get_keyspace());
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replication_type = ks.get_replication_strategy().get_type();
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}
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if (replication_type != locator::replication_strategy_type::local) {
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sstring info = _cf_name ? _cf_name->to_string() : "schema";
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throw std::logic_error(format("Attempted to modify {} via internal query: such schema changes are not propagated and thus illegal", info));
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}
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}
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return execute0(qp, state, options).then([this, &state, internal](::shared_ptr<messages::result_message> result) {
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auto permissions_granted_fut = internal
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? make_ready_future<>()
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: grant_permissions_to_creator(state.get_client_state());
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return permissions_granted_fut.then([result = std::move(result)] {
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return result;
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});
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});
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}
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}
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}
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