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Diffstat (limited to '')
-rw-r--r-- | wsrep-lib/dbsim/db_high_priority_service.hpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/wsrep-lib/dbsim/db_high_priority_service.hpp b/wsrep-lib/dbsim/db_high_priority_service.hpp new file mode 100644 index 00000000..d4a80f1b --- /dev/null +++ b/wsrep-lib/dbsim/db_high_priority_service.hpp @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2018-2019 Codership Oy <info@codership.com> + * + * This file is part of wsrep-lib. + * + * Wsrep-lib is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * Wsrep-lib is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with wsrep-lib. If not, see <https://www.gnu.org/licenses/>. + */ + +#ifndef WSREP_DB_HIGH_PRIORITY_SERVICE_HPP +#define WSREP_DB_HIGH_PRIORITY_SERVICE_HPP + +#include "wsrep/high_priority_service.hpp" + +namespace db +{ + class server; + class client; + class high_priority_service : public wsrep::high_priority_service + { + public: + high_priority_service(db::server& server, db::client& client); + int start_transaction(const wsrep::ws_handle&, + const wsrep::ws_meta&) override; + int next_fragment(const wsrep::ws_meta&) override; + const wsrep::transaction& transaction() const override; + int adopt_transaction(const wsrep::transaction&) override; + int apply_write_set(const wsrep::ws_meta&, + const wsrep::const_buffer&, + wsrep::mutable_buffer&) override; + int append_fragment_and_commit( + const wsrep::ws_handle&, + const wsrep::ws_meta&, + const wsrep::const_buffer&, + const wsrep::xid&) override + { return 0; } + int remove_fragments(const wsrep::ws_meta&) override + { return 0; } + int commit(const wsrep::ws_handle&, const wsrep::ws_meta&) override; + int rollback(const wsrep::ws_handle&, const wsrep::ws_meta&) override; + int apply_toi(const wsrep::ws_meta&, const wsrep::const_buffer&, + wsrep::mutable_buffer&) override; + int apply_nbo_begin(const wsrep::ws_meta&, const wsrep::const_buffer&, + wsrep::mutable_buffer&) + override; + void adopt_apply_error(wsrep::mutable_buffer&) override; + virtual void after_apply() override; + void store_globals() override { } + void reset_globals() override { } + void switch_execution_context(wsrep::high_priority_service&) override + { } + int log_dummy_write_set(const wsrep::ws_handle&, + const wsrep::ws_meta&, + wsrep::mutable_buffer&) override; + virtual bool is_replaying() const override; + void debug_crash(const char*) override { } + private: + high_priority_service(const high_priority_service&); + high_priority_service& operator=(const high_priority_service&); + db::server& server_; + db::client& client_; + }; + + class replayer_service : public db::high_priority_service + { + public: + replayer_service(db::server& server, db::client& client) + : db::high_priority_service(server, client) + { } + // After apply is empty for replayer to keep the transaction + // context available for the client session after replaying + // is over. + void after_apply() override {} + bool is_replaying() const override { return true; } + }; + +} + +#endif // WSREP_DB_HIGH_PRIORITY_SERVICE_HPP |