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https://github.com/codership/wsrep-lib.git
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7994288534
- Release commit time critical section in callback - Check the consistency inside commit order critical section Other: Add 2pc switch to dbsim
91 lines
3.5 KiB
C++
91 lines
3.5 KiB
C++
/*
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* Copyright (C) 2018-2019 Codership Oy <info@codership.com>
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*
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* This file is part of wsrep-lib.
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*
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* Wsrep-lib is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* Wsrep-lib 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 wsrep-lib. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef WSREP_DB_HIGH_PRIORITY_SERVICE_HPP
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#define WSREP_DB_HIGH_PRIORITY_SERVICE_HPP
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#include "wsrep/high_priority_service.hpp"
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namespace db
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{
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class server;
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class client;
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class high_priority_service : public wsrep::high_priority_service
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{
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public:
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high_priority_service(db::server& server, db::client& client);
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int start_transaction(const wsrep::ws_handle&,
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const wsrep::ws_meta&) override;
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int next_fragment(const wsrep::ws_meta&) override;
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const wsrep::transaction& transaction() const override;
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int adopt_transaction(const wsrep::transaction&) override;
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int apply_write_set(const wsrep::ws_meta&,
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const wsrep::const_buffer&,
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wsrep::mutable_buffer&) override;
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int append_fragment_and_commit(
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const wsrep::ws_handle&,
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const wsrep::ws_meta&,
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const wsrep::const_buffer&,
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const wsrep::xid&) override
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{ return 0; }
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int remove_fragments(const wsrep::ws_meta&) override
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{ return 0; }
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int commit(const wsrep::ws_handle&, const wsrep::ws_meta&) override;
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int rollback(const wsrep::ws_handle&, const wsrep::ws_meta&) override;
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int apply_toi(const wsrep::ws_meta&, const wsrep::const_buffer&,
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wsrep::mutable_buffer&) override;
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int apply_nbo_begin(const wsrep::ws_meta&, const wsrep::const_buffer&,
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wsrep::mutable_buffer&)
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override;
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void adopt_apply_error(wsrep::mutable_buffer&) override;
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virtual void after_apply() override;
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void store_globals() override { }
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void reset_globals() override { }
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void switch_execution_context(wsrep::high_priority_service&) override
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{ }
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int log_dummy_write_set(const wsrep::ws_handle&,
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const wsrep::ws_meta&,
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wsrep::mutable_buffer&) override;
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virtual bool is_replaying() const override;
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void debug_crash(const char*) override { }
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private:
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high_priority_service(const high_priority_service&);
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high_priority_service& operator=(const high_priority_service&);
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db::server& server_;
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db::client& client_;
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uint64_t commit_seqno_;
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};
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class replayer_service : public db::high_priority_service
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{
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public:
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replayer_service(db::server& server, db::client& client)
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: db::high_priority_service(server, client)
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{ }
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// After apply is empty for replayer to keep the transaction
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// context available for the client session after replaying
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// is over.
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void after_apply() override {}
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bool is_replaying() const override { return true; }
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};
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}
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#endif // WSREP_DB_HIGH_PRIORITY_SERVICE_HPP
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