mirror of
https://github.com/codership/wsrep-lib.git
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f3c8392ea8
The following was moved to application side implementation: - Removed sr_store from streaming context. - Removed sr_state from transaction. - Removed get_binlog_cache() from client_service interface. Other: - Add SR applier reference to append_fragment_and_commit() to make it available for application. - Add separate interface call to rollback SR transactions on disconnect. Rolling back SR transactions due to rollback fragment and rolling back SR transactions due to disconnect have different behaviors. Have separate calls for these different cases for clarity. - Remove non-const transaction accessor, not needed anymore because SR state has been moved to application side. - Remove unneeded set_fragments_from_table().
92 lines
3.6 KiB
C++
92 lines
3.6 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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wsrep::high_priority_service&,
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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 rollback_sr_on_disconnect() 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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};
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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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