utils::trx_tracker Namespace Reference

Detailed Description

Tracking for heavy operations while having active transactions.

Some operations, like http requests, are heavy and can take too long during an incident. If they are called during an active database transaction, connection will be held for longer and connection pool will be exhausted. Transaction tracker prevents this by holding counter of active transactions in TaskLocalVariable and checking for active transactions in heavy operations.

Example usage:

    utils::trx_tracker::TransactionLock trx{};
    trx.Lock();
    utils::trx_tracker::CheckNoTransactions();
    trx.Unlock();
 
    EXPECT_EQ(utils::trx_tracker::GetStatistics().triggers, 1);
    EXPECT_THAT(GetLogCapture().Filter("Long call while having active transactions"), testing::SizeIs(1));

Classes
class	CheckDisabler
	Disable check for active transactions. More...
class	TransactionLock
	Class for incrementing and decrementing transaction counter. More...
struct	TransactionTrackerStatistics
	Statistics for transaction tracker. More...

Functions
void	CheckNoTransactions (utils::impl::SourceLocation location=utils::impl::SourceLocation::Current())
	Check for active transactions.
void	CheckNoTransactions (std::string_view location)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
TransactionTrackerStatistics	GetStatistics () noexcept
	Get statistics for transaction tracker.
void	ResetStatistics ()
	Reset statistics for transaction tracker.