77 lines
3.2 KiB
C++
77 lines
3.2 KiB
C++
/*------------------------------------------------------------------------------*
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* Architecture & Implementation of DBMS *
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*------------------------------------------------------------------------------*
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* Copyright 2022 Databases and Information Systems Group TU Dortmund *
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* Visit us at *
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* http://dbis.cs.tu-dortmund.de/cms/en/home/ *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR *
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, *
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR *
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* OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Authors: *
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* Maximilian Berens <maximilian.berens@tu-dortmund.de> *
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* Roland Kühn <roland.kuehn@cs.tu-dortmund.de> *
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* Jan Mühlig <jan.muehlig@tu-dortmund.de> *
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*------------------------------------------------------------------------------*
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*/
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#pragma once
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#include <array>
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#include <concurrency/transaction.h>
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#include <concurrency/transaction_callback.h>
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#include <config.h>
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#include <database.h>
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#include <io/command/commander.h>
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#include <io/command/custom_commands.h>
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#include <network/server.h>
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namespace beedb::io
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{
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class ClientHandler : public network::ClientHandler
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{
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public:
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ClientHandler(Database &database) noexcept;
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~ClientHandler() noexcept override = default;
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std::optional<std::string> handle_message(const std::uint32_t client_id, const std::string &message) override;
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void on_client_connected(const std::uint32_t id) override;
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void on_client_disconnected(const std::uint32_t id) override;
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void server(network::Server *server) override
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{
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network::ClientHandler::server(server);
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_commander.register_command("stop", std::make_unique<command::StopServerCommand>(server));
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}
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private:
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Database &_database;
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command::Commander _commander;
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std::array<concurrency::Transaction *, Config::max_clients> _client_transactions;
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};
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class TransactionCallback : public concurrency::TransactionCallback
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{
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public:
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TransactionCallback(concurrency::Transaction *&transaction) : _transaction(transaction)
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{
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}
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~TransactionCallback() override = default;
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void on_begin(concurrency::Transaction *transaction) override
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{
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_transaction = transaction;
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}
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void on_end(concurrency::Transaction *, const bool) override
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{
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_transaction = nullptr;
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}
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private:
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concurrency::Transaction *&_transaction;
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};
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} // namespace beedb::io
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