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 operaions.

Example usage:

    utils::trx_tracker::StartTransaction();
    utils::trx_tracker::CheckNoTransactions();
    utils::trx_tracker::EndTransaction();
 
    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...
struct	TransactionTrackerStatistics
	Statistics for transaction tracker. More...

Functions
void	StartTransaction ()
	Increment transaction counter.
void	EndTransaction () noexcept
	Decrement transaction counter.
void	CheckNoTransactions (utils::impl::SourceLocation location=utils::impl::SourceLocation::Current())
	Check for active transactions.
TransactionTrackerStatistics	GetStatistics () noexcept
	Get statistics for transaction tracker.
void	ResetStatistics ()
	Reset statistics for transaction tracker.

Function Documentation

EndTransaction()

void utils::trx_tracker::EndTransaction ( )

noexcept

Decrement transaction counter.

If called before StartTransaction, the behavior is undefined.