Recovery_metadata_observer Class Reference

This class is used by: More...

#include <recovery_metadata_observer.h>

Inheritance diagram for Recovery_metadata_observer:

Public Member Functions
	Recovery_metadata_observer ()
	Constructor Register observer to get notification on view change. More...
virtual	~Recovery_metadata_observer () override
	Destructor. 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...

Detailed Description

This class is used by:

1. joiner: to keep track of all leaving recovery metadata donors, so that joiner can error out if no donor is available.
2. recovery metadata donors: to keep track of all leaving recovery metadata donors, so that other donor can send metadata if any exisiting donor has left before successfully sending data.

Constructor & Destructor Documentation

Recovery_metadata_observer()

Recovery_metadata_observer::Recovery_metadata_observer

(

)

Constructor Register observer to get notification on view change.

~Recovery_metadata_observer()

Recovery_metadata_observer::~Recovery_metadata_observer ( )

overridevirtual

Destructor.

Unregister observers

Member Function Documentation

after_primary_election()

int Recovery_metadata_observer::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 Recovery_metadata_observer::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 Recovery_metadata_observer::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.

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

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