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Enhanced dbsim to store view and position in storage engine

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Mimic real DBMS implementation by storing view and position
into storage engine.
This commit is contained in:
Teemu Ollakka
2019-01-23 19:10:34 +02:00
parent 632f8c3b14
commit f30d9c06ce
8 changed files with 82 additions and 22 deletions
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38
dbsim/db_storage_engine.cpp
View File

@ -37,12 +37,13 @@ void db::storage_engine::transaction::apply(
se_.bf_abort_some(transaction);
}
void db::storage_engine::transaction::commit()
void db::storage_engine::transaction::commit(const wsrep::gtid& gtid)
{
if (cc_)
{
wsrep::unique_lock<wsrep::mutex> lock(se_.mutex_);
se_.transactions_.erase(cc_);
se_.store_position(gtid);
}
cc_ = nullptr;
}
@ -80,3 +81,38 @@ void db::storage_engine::bf_abort_some(const wsrep::transaction& txc)
}
}
}
void db::storage_engine::store_position(const wsrep::gtid& gtid)
{
validate_position(gtid);
position_ = gtid;
}
wsrep::gtid db::storage_engine::get_position() const
{
return position_;
}
void db::storage_engine::store_view(const wsrep::view& view)
{
view_ = view;
}
wsrep::view db::storage_engine::get_view() const
{
return view_;
}
void db::storage_engine::validate_position(const wsrep::gtid& gtid) const
{
using std::rel_ops::operator<=;
if (position_.id() == gtid.id() && gtid.seqno() <= position_.seqno())
{
std::ostringstream os;
os << "Invalid position submitted, position seqno "
<< position_.seqno()
<< " is greater than submitted seqno "
<< gtid.seqno();
throw wsrep::runtime_error(os.str());
}
}