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78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
/**************************************************************************
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Copyright (c) 2017 sewenew
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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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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#ifndef SEWENEW_REDISPLUSPLUS_TRANSACTION_H
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#define SEWENEW_REDISPLUSPLUS_TRANSACTION_H
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#include <cassert>
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#include <vector>
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#include "connection.h"
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#include "errors.h"
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namespace sw {
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namespace redis {
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class TransactionImpl {
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public:
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explicit TransactionImpl(bool piped) : _piped(piped) {}
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template <typename Cmd, typename ...Args>
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void command(Connection &connection, Cmd cmd, Args &&...args);
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std::vector<ReplyUPtr> exec(Connection &connection, std::size_t cmd_num);
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void discard(Connection &connection, std::size_t cmd_num);
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private:
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void _open_transaction(Connection &connection);
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void _close_transaction();
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void _get_queued_reply(Connection &connection);
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void _get_queued_replies(Connection &connection, std::size_t cmd_num);
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std::vector<ReplyUPtr> _exec(Connection &connection);
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void _discard(Connection &connection);
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bool _in_transaction = false;
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bool _piped;
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};
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template <typename Cmd, typename ...Args>
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void TransactionImpl::command(Connection &connection, Cmd cmd, Args &&...args) {
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assert(!connection.broken());
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if (!_in_transaction) {
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_open_transaction(connection);
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}
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cmd(connection, std::forward<Args>(args)...);
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if (!_piped) {
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_get_queued_reply(connection);
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}
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}
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}
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}
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#endif // end SEWENEW_REDISPLUSPLUS_TRANSACTION_H
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