Class that contains the primary election process logic for secondary members. More...

#include <primary_election_secondary_process.h>

Inheritance diagram for Primary_election_secondary_process:

Public Member Functions
	Primary_election_secondary_process ()
	Class constructor for secondary election process. More...

	~Primary_election_secondary_process () override
	Class destructor for secondary election process. More...

int	launch_secondary_election_process (enum_primary_election_mode election_mode, std::string &primary_to_elect, Group_member_info_list *group_members_info)
	Launch the local process on the secondary members for primary election. More...

bool	is_election_process_running ()
	Is the election process running? More...

int	terminate_election_process (bool wait=true)
	Terminate the election process on shutdown. More...

int	secondary_election_process_handler ()

void	set_stop_wait_timeout (ulong timeout)
	Sets the component stop timeout. More...

Public Member Functions inherited from Group_event_observer
virtual	~Group_event_observer ()=0

Private Member Functions
int	after_view_change (const std::vector< Gcs_member_identifier > &joining, const std::vector< Gcs_member_identifier > &leaving, const std::vector< Gcs_member_identifier > &group, bool is_leaving, bool skip_election, enum_primary_election_mode election_mode, std::string &suggested_primary) override
	Executed after view install and before primary election. More...

int	after_primary_election (std::string primary_uuid, enum_primary_election_primary_change_status primary_change_status, enum_primary_election_mode election_mode, int error) override
	Executed after primary election. More...

int	before_message_handling (const Plugin_gcs_message &message, const std::string &message_origin, bool *skip_message) override
	Executed before the message is processed. More...

bool	enable_read_mode_on_server (const std::string &reason)
	Enables the read mode in the server. More...

bool	signal_read_mode_ready ()
	Signal that the read mode is ready on this member. More...

Private Attributes
thread_state	election_process_thd_state
	The election thread status. More...

bool	election_process_aborted
	Is the process aborted. More...

bool	waiting_on_old_primary_transactions
	Waiting for old primary transaction execution. More...

bool	primary_ready

bool	group_in_read_mode
	Are all group members in read mode. More...

bool	is_waiting_on_read_mode_group
	Process is waiting on read mode - stage related var. More...

enum_primary_election_mode	election_mode
	The election invocation context. More...

std::string	primary_uuid
	The primary to be elected. More...

ulong	number_of_know_members
	The number of known members when the election started. More...

std::list< std::string >	known_members_addresses
	The members known for the current action. More...

Plugin_stage_monitor_handler *	stage_handler
	The stage handler for progress reporting. More...

ulong	stop_wait_timeout

mysql_mutex_t	election_lock
	The thread run lock. More...

mysql_cond_t	election_cond
	The thread run condition. More...

my_thread_handle	primary_election_pthd
	The thread handle. More...

Detailed Description

Class that contains the primary election process logic for secondary members.

Constructor & Destructor Documentation

◆ Primary_election_secondary_process()

Primary_election_secondary_process::Primary_election_secondary_process ( )

Class constructor for secondary election process.

◆ ~Primary_election_secondary_process()

Primary_election_secondary_process::~Primary_election_secondary_process ( )

override

Class destructor for secondary election process.

Member Function Documentation

◆ after_primary_election()

int Primary_election_secondary_process::after_primary_election	(	std::string	primary_uuid,
		enum_primary_election_primary_change_status	primary_change_status,
		enum_primary_election_mode	election_mode,
		int	error
	)

overrideprivatevirtual

Executed after primary election.

Parameters

primary_uuid	the elected primary
primary_change_status	if the primary changed after the election
election_mode	what was the election mode
error	if there was and error on the process

Implements Group_event_observer.

◆ after_view_change()

int Primary_election_secondary_process::after_view_change	(	const std::vector< Gcs_member_identifier > &	joining,
		const std::vector< Gcs_member_identifier > &	leaving,
		const std::vector< Gcs_member_identifier > &	group,
		bool	is_leaving,
		bool *	skip_election,
		enum_primary_election_mode *	election_mode,
		std::string &	suggested_primary
	)

overrideprivatevirtual

Executed after view install and before primary election.

Parameters

	joining	members joining the group
	leaving	members leaving the group
	group	members in the group
	is_leaving	is the member leaving
[out]	skip_election	skip primary election on view
[out]	election_mode	election mode
[out]	suggested_primary	what should be the next primary to elect

Implements Group_event_observer.

◆ before_message_handling()

int Primary_election_secondary_process::before_message_handling	(	const Plugin_gcs_message &	message,
		const std::string &	message_origin,
		bool *	skip_message
	)

overrideprivatevirtual

Executed before the message is processed.

Parameters

	message	The GCS message
	message_origin	The member that sent this message (address)
[out]	skip_message	skip message handling if true

Implements Group_event_observer.

◆ enable_read_mode_on_server()

bool Primary_election_secondary_process::enable_read_mode_on_server ( const std::string & reason )

private

Enables the read mode in the server.

Parameters

reason explains why we set the mode

Returns: false in case of success, or true otherwise

◆ is_election_process_running()

bool Primary_election_secondary_process::is_election_process_running ( )

Is the election process running?

Returns: election_process_running

◆ launch_secondary_election_process()

int Primary_election_secondary_process::launch_secondary_election_process	(	enum_primary_election_mode	election_mode,
		std::string &	primary_to_elect,
		Group_member_info_list *	group_members_info
	)

Launch the local process on the secondary members for primary election.

Parameters

election_mode	the context on which election is occurring
primary_to_elect	the uuid of the primary to elect
group_members_info	the member info about group members

Returns: 0 in case of success, or 1 otherwise

◆ secondary_election_process_handler()

int Primary_election_secondary_process::secondary_election_process_handler ( )

◆ set_stop_wait_timeout()

void Primary_election_secondary_process::set_stop_wait_timeout ( ulong timeout )

Sets the component stop timeout.

Parameters

[in] timeout the timeout

◆ signal_read_mode_ready()

bool Primary_election_secondary_process::signal_read_mode_ready ( )

private

Signal that the read mode is ready on this member.

Returns: false in case of success, or true otherwise

◆ terminate_election_process()

int Primary_election_secondary_process::terminate_election_process ( bool wait = true )

Terminate the election process on shutdown.

Member Data Documentation

◆ election_cond

mysql_cond_t Primary_election_secondary_process::election_cond

private

The thread run condition.

◆ election_lock

mysql_mutex_t Primary_election_secondary_process::election_lock

private

The thread run lock.

◆ election_mode

enum_primary_election_mode Primary_election_secondary_process::election_mode

private

The election invocation context.

◆ election_process_aborted

bool Primary_election_secondary_process::election_process_aborted

private

Is the process aborted.

◆ election_process_thd_state

thread_state Primary_election_secondary_process::election_process_thd_state

private

The election thread status.

◆ group_in_read_mode

bool Primary_election_secondary_process::group_in_read_mode

private

Are all group members in read mode.

◆ is_waiting_on_read_mode_group

bool Primary_election_secondary_process::is_waiting_on_read_mode_group

private

Process is waiting on read mode - stage related var.

◆ known_members_addresses

std::list<std::string> Primary_election_secondary_process::known_members_addresses

private

The members known for the current action.

◆ number_of_know_members

ulong Primary_election_secondary_process::number_of_know_members

private

The number of known members when the election started.

◆ primary_election_pthd

my_thread_handle Primary_election_secondary_process::primary_election_pthd

private

The thread handle.

◆ primary_ready

bool Primary_election_secondary_process::primary_ready

private

◆ primary_uuid

std::string Primary_election_secondary_process::primary_uuid

private

The primary to be elected.

◆ stage_handler

Plugin_stage_monitor_handler* Primary_election_secondary_process::stage_handler

private

The stage handler for progress reporting.

◆ stop_wait_timeout

ulong Primary_election_secondary_process::stop_wait_timeout

private

◆ waiting_on_old_primary_transactions

bool Primary_election_secondary_process::waiting_on_old_primary_transactions

private

Waiting for old primary transaction execution.

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

plugin/group_replication/include/plugin_handlers/primary_election_secondary_process.h
plugin/group_replication/src/plugin_handlers/primary_election_secondary_process.cc

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Primary_election_secondary_process()

◆ ~Primary_election_secondary_process()

Member Function Documentation

◆ after_primary_election()

◆ after_view_change()

◆ before_message_handling()

◆ enable_read_mode_on_server()

◆ is_election_process_running()

◆ launch_secondary_election_process()

◆ secondary_election_process_handler()

◆ set_stop_wait_timeout()

◆ signal_read_mode_ready()

◆ terminate_election_process()

Member Data Documentation

◆ election_cond

◆ election_lock

◆ election_mode

◆ election_process_aborted

◆ election_process_thd_state

◆ group_in_read_mode

◆ is_waiting_on_read_mode_group

◆ known_members_addresses

◆ number_of_know_members

◆ primary_election_pthd

◆ primary_ready

◆ primary_uuid

◆ stage_handler

◆ stop_wait_timeout

◆ waiting_on_old_primary_transactions