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https://github.com/codership/wsrep-lib.git
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a6b38d2428
Introduced server_service recover_streaming_appliers() interface call which will be called in total order whenever streaming appliers must be recovered. The call comes with two overloads, one which can be called from client context (e.g. after SST has been received) and the other from high priority context (e.g. view event handling). The client context overload should be eventually be deprecated once there is a mechanism to make provider signal that it has joined to the cluster and will start applying events.
296 lines
10 KiB
C++
296 lines
10 KiB
C++
/*
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* Copyright (C) 2018 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_MOCK_SERVER_STATE_HPP
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#define WSREP_MOCK_SERVER_STATE_HPP
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#include "wsrep/server_state.hpp"
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#include "wsrep/server_service.hpp"
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#include "mock_client_state.hpp"
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#include "mock_high_priority_service.hpp"
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#include "mock_storage_service.hpp"
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#include "mock_provider.hpp"
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#include "wsrep/compiler.hpp"
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namespace wsrep
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{
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class mock_server_service : public wsrep::server_service
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{
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public:
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mock_server_service(wsrep::server_state& server_state)
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: sync_point_enabled_()
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, sync_point_action_()
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, sst_before_init_()
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, server_state_(server_state)
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, last_client_id_(0)
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, last_transaction_id_(0)
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, logged_view_()
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, position_()
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{ }
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wsrep::storage_service* storage_service(wsrep::client_service&)
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WSREP_OVERRIDE
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{
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return new wsrep::mock_storage_service(server_state_,
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wsrep::client_id(++last_client_id_));
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}
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wsrep::storage_service* storage_service(wsrep::high_priority_service&)
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WSREP_OVERRIDE
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{
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return new wsrep::mock_storage_service(server_state_,
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wsrep::client_id(++last_client_id_));
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}
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void release_storage_service(wsrep::storage_service* storage_service)
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WSREP_OVERRIDE
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{
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delete storage_service;
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}
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wsrep::high_priority_service* streaming_applier_service(
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wsrep::client_service&)
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WSREP_OVERRIDE
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{
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wsrep::mock_client* cs(new wsrep::mock_client(
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server_state_,
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wsrep::client_id(++last_client_id_),
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wsrep::client_state::m_high_priority));
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wsrep::mock_high_priority_service* ret(
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new wsrep::mock_high_priority_service(server_state_,
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cs, false));
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cs->open(cs->id());
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cs->before_command();
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return ret;
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}
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wsrep::high_priority_service* streaming_applier_service(
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wsrep::high_priority_service&) WSREP_OVERRIDE
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{
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wsrep::mock_client* cs(new wsrep::mock_client(
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server_state_,
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wsrep::client_id(++last_client_id_),
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wsrep::client_state::m_high_priority));
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wsrep::mock_high_priority_service* ret(
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new wsrep::mock_high_priority_service(server_state_,
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cs, false));
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cs->open(cs->id());
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cs->before_command();
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return ret;
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}
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void release_high_priority_service(
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wsrep::high_priority_service *high_priority_service)
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WSREP_OVERRIDE
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{
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mock_high_priority_service* mhps(
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static_cast<mock_high_priority_service*>(high_priority_service));
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wsrep::mock_client* cs(static_cast<wsrep::mock_client*>(
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mhps->client_state()));
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cs->after_command_before_result();
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cs->after_command_after_result();
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cs->close();
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cs->cleanup();
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delete cs;
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delete mhps;
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}
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void bootstrap() WSREP_OVERRIDE { }
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void log_message(enum wsrep::log::level level, const char* message)
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WSREP_OVERRIDE
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{
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wsrep::log(level, server_state_.name().c_str()) << message;
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}
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void log_dummy_write_set(wsrep::client_state&,
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const wsrep::ws_meta&)
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WSREP_OVERRIDE
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{
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}
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void log_view(wsrep::high_priority_service*, const wsrep::view& view)
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WSREP_OVERRIDE
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{
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logged_view_ = view;
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}
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void recover_streaming_appliers(wsrep::client_service&)
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WSREP_OVERRIDE
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{ }
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void recover_streaming_appliers(wsrep::high_priority_service&)
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WSREP_OVERRIDE
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{ }
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wsrep::view get_view(wsrep::client_service&, const wsrep::id& own_id)
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WSREP_OVERRIDE
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{
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int const my_idx(logged_view_.member_index(own_id));
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wsrep::view my_view(
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logged_view_.state_id(),
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logged_view_.view_seqno(),
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logged_view_.status(),
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logged_view_.capabilities(),
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my_idx,
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logged_view_.protocol_version(),
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logged_view_.members()
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);
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return my_view;
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}
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wsrep::gtid get_position(wsrep::client_service&) WSREP_OVERRIDE
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{
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return position_;
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}
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void log_state_change(enum wsrep::server_state::state,
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enum wsrep::server_state::state)
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WSREP_OVERRIDE
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{ }
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bool sst_before_init() const WSREP_OVERRIDE
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{ return sst_before_init_; }
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std::string sst_request() WSREP_OVERRIDE { return ""; }
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int start_sst(const std::string&,
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const wsrep::gtid&,
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bool) WSREP_OVERRIDE { return 0; }
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void background_rollback(wsrep::client_state& client_state)
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WSREP_OVERRIDE
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{
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client_state.before_rollback();
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client_state.after_rollback();
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}
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int wait_committing_transactions(int) WSREP_OVERRIDE { return 0; }
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wsrep::transaction_id next_transaction_id()
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{
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return wsrep::transaction_id(++last_transaction_id_);
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}
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void debug_sync(const char* sync_point) WSREP_OVERRIDE
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{
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if (sync_point_enabled_ == sync_point)
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{
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switch (sync_point_action_)
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{
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case spa_none:
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break;
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case spa_initialize:
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server_state_.initialized();
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break;
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case spa_initialize_error:
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throw wsrep::runtime_error("Inject initialization error");
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break;
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}
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}
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}
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std::string sync_point_enabled_;
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enum sync_point_action
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{
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spa_none,
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spa_initialize,
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spa_initialize_error
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} sync_point_action_;
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bool sst_before_init_;
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void logged_view(const wsrep::view& view)
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{
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logged_view_ = view;
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}
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void position(const wsrep::gtid& position)
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{
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position_ = position;
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}
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private:
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wsrep::server_state& server_state_;
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unsigned long long last_client_id_;
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unsigned long long last_transaction_id_;
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wsrep::view logged_view_;
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wsrep::gtid position_;
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};
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class mock_server_state : public wsrep::server_state
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{
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public:
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mock_server_state(const std::string& name,
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enum wsrep::server_state::rollback_mode rollback_mode,
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wsrep::server_service& server_service)
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: wsrep::server_state(mutex_, cond_, server_service,
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name, "", "", "./",
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wsrep::gtid::undefined(),
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1,
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rollback_mode)
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, mutex_()
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, cond_()
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, provider_(*this)
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{ }
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wsrep::mock_provider& provider() const WSREP_OVERRIDE
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{ return provider_; }
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// mock connected state for tests without overriding the connect()
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// method.
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int mock_connect(const std::string& own_id,
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const std::string& cluster_name,
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const std::string& cluster_address,
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const std::string& state_donor,
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bool bootstrap)
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{
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int const ret(server_state::connect(cluster_name,
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cluster_address,
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state_donor,
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bootstrap));
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if (0 == ret)
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{
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wsrep::id cluster_id("1");
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wsrep::gtid state_id(cluster_id, wsrep::seqno(0));
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std::vector<wsrep::view::member> members;
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members.push_back(wsrep::view::member(wsrep::id(own_id),
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"name", ""));
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wsrep::view bootstrap_view(state_id,
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wsrep::seqno(1),
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wsrep::view::primary,
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0,
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0,
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1,
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members);
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server_state::on_connect(bootstrap_view);
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}
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else
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{
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assert(0);
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}
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return ret;
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}
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int mock_connect()
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{
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return mock_connect(name(), "cluster", "local", "0", false);
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}
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private:
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wsrep::default_mutex mutex_;
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wsrep::default_condition_variable cond_;
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mutable wsrep::mock_provider provider_;
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};
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}
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#endif // WSREP_MOCK_SERVER_STATE_HPP
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