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Diffstat (limited to 'wsrep-lib/test/mock_client_state.hpp')
| -rw-r--r-- | wsrep-lib/test/mock_client_state.hpp | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/wsrep-lib/test/mock_client_state.hpp b/wsrep-lib/test/mock_client_state.hpp new file mode 100644 index 00000000..73b27755 --- /dev/null +++ b/wsrep-lib/test/mock_client_state.hpp @@ -0,0 +1,260 @@ +/* + * Copyright (C) 2018 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_MOCK_CLIENT_CONTEXT_HPP +#define WSREP_MOCK_CLIENT_CONTEXT_HPP + +#include "wsrep/client_state.hpp" +#include "wsrep/mutex.hpp" +#include "wsrep/compiler.hpp" +#include "wsrep/client_service.hpp" +#include "wsrep/condition_variable.hpp" + +#include "test_utils.hpp" + +namespace wsrep +{ + class mock_client_state : public wsrep::client_state + { + public: + mock_client_state(wsrep::server_state& server_state, + wsrep::client_service& client_service, + const wsrep::client_id& id, + enum wsrep::client_state::mode mode) + : wsrep::client_state(mutex_, cond_, server_state, client_service, + id, mode) + , mutex_() + , cond_() + { } + ~mock_client_state() WSREP_OVERRIDE + { + if (transaction().active()) + { + (void)client_service().bf_rollback(); + } + } + private: + wsrep::default_mutex mutex_; + wsrep::default_condition_variable cond_; + public: + private: + }; + + + class mock_client_service : public wsrep::client_service + { + public: + mock_client_service(wsrep::mock_client_state* client_state) + : wsrep::client_service() + , is_autocommit_() + , do_2pc_() + // , fail_next_applying_() + // , fail_next_toi_() + , bf_abort_during_wait_() + , bf_abort_during_fragment_removal_() + , error_during_prepare_data_() + , killed_before_certify_() + , sync_point_enabled_() + , sync_point_action_() + , bytes_generated_() + , client_state_(client_state) + , will_replay_called_() + , replays_() + , unordered_replays_() + , aborts_() + { } + mock_client_service(const mock_client_service&) = delete; + mock_client_service& operator=(const mock_client_service&) = delete; + + int bf_rollback() WSREP_OVERRIDE; + + bool interrupted(wsrep::unique_lock<wsrep::mutex>&) + const WSREP_OVERRIDE + { return killed_before_certify_; } + + + void emergency_shutdown() WSREP_OVERRIDE { ++aborts_; } + + int remove_fragments() WSREP_OVERRIDE + { + if (bf_abort_during_fragment_removal_) + { + client_state_->before_rollback(); + client_state_->after_rollback(); + return 1; + } + else + { + return 0; + } + } + + void will_replay() WSREP_OVERRIDE { will_replay_called_ = true; } + + void signal_replayed() WSREP_OVERRIDE { } + + enum wsrep::provider::status replay() WSREP_OVERRIDE; + + enum wsrep::provider::status replay_unordered() WSREP_OVERRIDE + { + unordered_replays_++; + return wsrep::provider::success; + } + + void wait_for_replayers( + wsrep::unique_lock<wsrep::mutex>& lock) + WSREP_OVERRIDE + { + lock.unlock(); + if (bf_abort_during_wait_) + { + wsrep_test::bf_abort_unordered(*client_state_); + } + lock.lock(); + } + + int prepare_data_for_replication() WSREP_OVERRIDE + { + if (error_during_prepare_data_) + { + return 1; + } + static const char buf[1] = { 1 }; + wsrep::const_buffer data = wsrep::const_buffer(buf, 1); + return client_state_->append_data(data); + } + + void cleanup_transaction() WSREP_OVERRIDE { } + + size_t bytes_generated() const WSREP_OVERRIDE + { + return bytes_generated_; + } + + bool statement_allowed_for_streaming() const WSREP_OVERRIDE + { return true; } + int prepare_fragment_for_replication(wsrep::mutable_buffer& buffer, size_t& position) + WSREP_OVERRIDE + { + if (error_during_prepare_data_) + { + return 1; + } + static const char buf[1] = { 1 }; + buffer.push_back(&buf[0], &buf[1]); + wsrep::const_buffer data(buffer.data(), buffer.size()); + position = buffer.size(); + return client_state_->append_data(data); + } + + void store_globals() WSREP_OVERRIDE { } + void reset_globals() WSREP_OVERRIDE { } + + enum wsrep::provider::status commit_by_xid() WSREP_OVERRIDE + { + return wsrep::provider::success; + } + + bool is_explicit_xa() WSREP_OVERRIDE + { + return false; + } + + bool is_xa_rollback() WSREP_OVERRIDE + { + return false; + } + + void debug_sync(const char* sync_point) WSREP_OVERRIDE + { + if (sync_point_enabled_ == sync_point) + { + switch (sync_point_action_) + { + case spa_bf_abort_unordered: + wsrep_test::bf_abort_unordered(*client_state_); + break; + case spa_bf_abort_ordered: + wsrep_test::bf_abort_ordered(*client_state_); + break; + } + } + } + + void debug_crash(const char*) WSREP_OVERRIDE + { + // Not going to do this while unit testing + } + + + // + // Knobs to tune the behavior + // + bool is_autocommit_; + bool do_2pc_; + // bool fail_next_applying_; + // bool fail_next_toi_; + bool bf_abort_during_wait_; + bool bf_abort_during_fragment_removal_; + bool error_during_prepare_data_; + bool killed_before_certify_; + std::string sync_point_enabled_; + enum sync_point_action + { + spa_bf_abort_unordered, + spa_bf_abort_ordered + } sync_point_action_; + size_t bytes_generated_; + + // + // Verifying the state + // + bool will_replay_called() const { return will_replay_called_; } + size_t replays() const { return replays_; } + size_t unordered_replays() const { return unordered_replays_; } + size_t aborts() const { return aborts_; } + private: + wsrep::mock_client_state* client_state_; + bool will_replay_called_; + size_t replays_; + size_t unordered_replays_; + size_t aborts_; + }; + + class mock_client + : public mock_client_state + , public mock_client_service + { + public: + mock_client(wsrep::server_state& server_state, + const wsrep::client_id& id, + enum wsrep::client_state::mode mode) + : mock_client_state(server_state, *this, id, mode) + , mock_client_service(static_cast<mock_client_state*>(this)) + { } + + int after_row() + { + bytes_generated_++; + return wsrep::client_state::after_row(); + } + }; +} + +#endif // WSREP_MOCK_CLIENT_CONTEXT_HPP |