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Initial RSU implementation.

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This commit is contained in:
Teemu Ollakka
2018-07-03 12:37:22 +03:00
parent c552d944ed
commit 4e8dfca3f1
6 changed files with 87 additions and 12 deletions
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58
src/client_state.cpp
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@ -300,6 +300,51 @@ int wsrep::client_state::leave_toi()
return ret;
}
int wsrep::client_state::begin_rsu(int timeout)
{
if (server_state_.desync())
{
wsrep::log_warning() << "Failed to desync server";
return 1;
}
if (server_state_.server_service().wait_committing_transactions(timeout))
{
wsrep::log_warning() << "RSU failed due to pending transactions";
server_state_.resync();
return 1;
}
wsrep::seqno pause_seqno(server_state_.pause());
if (pause_seqno.is_undefined())
{
wsrep::log_warning() << "Failed to pause provider";
server_state_.resync();
return 1;
}
wsrep::log_info() << "Provider paused at: " << pause_seqno;
wsrep::unique_lock<wsrep::mutex> lock(mutex_);
toi_mode_ = mode_;
mode(lock, m_rsu);
return 0;
}
int wsrep::client_state::end_rsu()
{
int ret(0);
try
{
server_state_.resume();
server_state_.resync();
}
catch (const wsrep::runtime_error& e)
{
wsrep::log_warning() << "End RSU failed: " << e.what();
ret = 1;
}
wsrep::unique_lock<wsrep::mutex> lock(mutex_);
mode(lock, toi_mode_);
return ret;
}
int wsrep::client_state::sync_wait(int timeout)
{
std::pair<wsrep::gtid, enum wsrep::provider::status> result(
@ -382,12 +427,13 @@ void wsrep::client_state::mode(
enum mode mode)
{
assert(lock.owns_lock());
static const char allowed[mode_max_][mode_max_] =
{ /* l r h t */
{ 0, 0, 0, 0 }, /* local */
{ 0, 0, 1, 1 }, /* repl */
{ 0, 1, 0, 1 }, /* high prio */
{ 0, 1, 1, 0 } /* toi */
static const char allowed[n_modes_][n_modes_] =
{ /* l r h t r */
{ 0, 0, 0, 0, 0 }, /* local */
{ 0, 0, 1, 1, 1 }, /* repl */
{ 0, 1, 0, 1, 0 }, /* high prio */
{ 0, 1, 1, 0, 0 }, /* toi */
{ 0, 1, 0, 0, 0 } /* rsu */
};
if (allowed[mode_][mode])
{