Group_transaction_observation_manager Class Reference

#include <group_transaction_observation_manager.h>

Public Member Functions
	Group_transaction_observation_manager ()
	~Group_transaction_observation_manager ()
void	register_transaction_observer (Group_transaction_listener *observer)
void	unregister_transaction_observer (Group_transaction_listener *observer)
int	before_transaction_begin (my_thread_id thread_id, ulong gr_consistency_level, ulong hold_timeout, enum_rpl_channel_type rpl_channel_type, const THD *thd)
	Executed before a transaction begins. More...
int	before_commit (my_thread_id thread_id, Group_transaction_listener::enum_transaction_origin origin)
int	before_rollback (my_thread_id thread_id)
int	after_commit (my_thread_id thread_id, rpl_sidno sidno, rpl_gno gno)
int	after_rollback (my_thread_id thread_id, Group_transaction_listener::enum_transaction_origin origin)
bool	is_any_observer_present ()
	Are there any observers present. More...
std::list< Group_transaction_listener * > *	get_all_observers ()
	Get all registered observers. More...
void	read_lock_observer_list ()
	Locks the observer list for reads. More...
void	write_lock_observer_list ()
	Locks the observer list for writes. More...
void	unlock_observer_list ()
	Unlocks the observer list. More...

Private Attributes
std::list< Group_transaction_listener * >	group_transaction_listeners
	List of observers. More...
Checkable_rwlock *	transaction_observer_list_lock
	The lock to protect the list. More...
std::atomic< bool >	registered_observers
	Flag that indicates that there are observers (for performance) More...

Constructor & Destructor Documentation

Group_transaction_observation_manager()

Group_transaction_observation_manager::Group_transaction_observation_manager

(

)

~Group_transaction_observation_manager()

Group_transaction_observation_manager::~Group_transaction_observation_manager

(

)

Member Function Documentation

after_commit()

int Group_transaction_observation_manager::after_commit	(	my_thread_id	thread_id,
		rpl_sidno	sidno,
		rpl_gno	gno
	)

after_rollback()

int Group_transaction_observation_manager::after_rollback	(	my_thread_id	thread_id,
		Group_transaction_listener::enum_transaction_origin	origin
	)

before_commit()

int Group_transaction_observation_manager::before_commit	(	my_thread_id	thread_id,
		Group_transaction_listener::enum_transaction_origin	origin
	)

before_rollback()

int Group_transaction_observation_manager::before_rollback

(

my_thread_id

thread_id

)

before_transaction_begin()

int Group_transaction_observation_manager::before_transaction_begin	(	my_thread_id	thread_id,
		ulong	gr_consistency_level,
		ulong	hold_timeout,
		enum_rpl_channel_type	rpl_channel_type,
		const THD *	thd
	)

Executed before a transaction begins.

Parameters

thread_id	the transaction thread id
gr_consistency_level	the current consistency level for this session
hold_timeout	the max time to execute an action on this transaction
rpl_channel_type	type channel that receives transaction
thd	server thd that represents client session

get_all_observers()

std::list< Group_transaction_listener * > * Group_transaction_observation_manager::get_all_observers

(

)

Get all registered observers.

Note

to get the list and while using it, you should take a read lock from transaction_observer_list_lock (you can use read_lock_observer_list())

Returns

The list of all registered observers

is_any_observer_present()

bool Group_transaction_observation_manager::is_any_observer_present

(

)

Are there any observers present.

Returns

true if at least one observer is present, false otherwise

read_lock_observer_list()

void Group_transaction_observation_manager::read_lock_observer_list

(

)

Locks the observer list for reads.

register_transaction_observer()

void Group_transaction_observation_manager::register_transaction_observer

(

Group_transaction_listener *

observer

)

unlock_observer_list()

void Group_transaction_observation_manager::unlock_observer_list

(

)

Unlocks the observer list.

unregister_transaction_observer()

void Group_transaction_observation_manager::unregister_transaction_observer

(

Group_transaction_listener *

observer

)

write_lock_observer_list()

void Group_transaction_observation_manager::write_lock_observer_list

(

)

Locks the observer list for writes.

Member Data Documentation

group_transaction_listeners

std::list<Group_transaction_listener *> Group_transaction_observation_manager::group_transaction_listeners

private

List of observers.

registered_observers

std::atomic<bool> Group_transaction_observation_manager::registered_observers

private

Flag that indicates that there are observers (for performance)

transaction_observer_list_lock

Checkable_rwlock* Group_transaction_observation_manager::transaction_observer_list_lock

private

The lock to protect the list.

---

The documentation for this class was generated from the following files:

• plugin/group_replication/include/plugin_observers/group_transaction_observation_manager.h
• plugin/group_replication/src/plugin_observers/group_transaction_observation_manager.cc