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Implementation of client_state NBO operations.

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- Implemented calls to enter and leave NBO phase one and two
- Extended client_state mode checking to include m_nbo
- Changed client_state state and mode change sanity checks to
  print a warning and assert() instead of throwing exceptions
  to be more graceful in release builds.
This commit is contained in:
Teemu Ollakka
2019-03-07 12:06:16 +02:00
parent 45c64735d6
commit 1267e29b8f
6 changed files with 255 additions and 29 deletions
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68
test/nbo_test.cpp Normal file
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/*
* Copyright (C) 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/>.
*/
#include "wsrep/client_state.hpp"
#include "client_state_fixture.hpp"
#include <boost/test/unit_test.hpp>
BOOST_FIXTURE_TEST_CASE(test_local_nbo,
replicating_client_fixture_sync_rm)
{
// NBO is executed in two consecutive TOI operations
BOOST_REQUIRE(cc.mode() == wsrep::client_state::m_local);
// First phase certifies the write set and enters TOI
wsrep::key key(wsrep::key::exclusive);
key.append_key_part("k1", 2);
key.append_key_part("k2", 2);
wsrep::key_array keys{key};
std::string data("data");
BOOST_REQUIRE(cc.begin_nbo_phase_one(
keys,
wsrep::const_buffer(data.data(),
data.size())) == 0);
BOOST_REQUIRE(cc.mode() == wsrep::client_state::m_nbo);
BOOST_REQUIRE(cc.in_toi());
BOOST_REQUIRE(cc.toi_mode() == wsrep::client_state::m_local);
// After required resoureces have been grabbed, NBO leave should
// end TOI but leave the client state in m_nbo.
BOOST_REQUIRE(cc.end_nbo_phase_one() == 0);
BOOST_REQUIRE(cc.mode() == wsrep::client_state::m_nbo);
BOOST_REQUIRE(cc.in_toi() == false);
BOOST_REQUIRE(cc.toi_mode() == wsrep::client_state::m_local);
// Second phase replicates the NBO end event and grabs TOI
// again for finalizing the NBO.
BOOST_REQUIRE(cc.begin_nbo_phase_two(keys) == 0);
BOOST_REQUIRE(cc.mode() == wsrep::client_state::m_nbo);
BOOST_REQUIRE(cc.in_toi());
BOOST_REQUIRE(cc.toi_mode() == wsrep::client_state::m_local);
// End of NBO phase will leave TOI and put the client state back to
// m_local
BOOST_REQUIRE(cc.end_nbo_phase_two() == 0);
BOOST_REQUIRE(cc.mode() == wsrep::client_state::m_local);
BOOST_REQUIRE(cc.in_toi() == false);
BOOST_REQUIRE(cc.toi_mode() == wsrep::client_state::m_local);
// There must have been two toi write sets, one with
// start transaction flag, another with commit flag.
BOOST_REQUIRE(sc.provider().toi_write_sets() == 2);
BOOST_REQUIRE(sc.provider().toi_start_transaction() == 1);
BOOST_REQUIRE(sc.provider().toi_commit() == 1);
}