#include <cluster_metadata.h>

Inheritance diagram for mysqlrouter::ClusterMetadata:

Public Member Functions
	ClusterMetadata (const MetadataSchemaVersion &schema_version, MySQLSession mysql, mysql_harness::SocketOperationsBase sockops=mysql_harness::SocketOperations::instance())

virtual	~ClusterMetadata ()=default

virtual mysqlrouter::ClusterType	get_type ()=0

virtual void	verify_router_id_is_ours (const uint32_t router_id, const std::string &hostname_override="")=0
	Checks if Router with given id is already registered in metadata database, and belongs to our machine. More...

virtual uint32_t	register_router (const std::string &router_name, const bool overwrite, const std::string &hostname_override="")=0
	Registers Router in metadata database. More...

virtual void	update_router_info (const uint32_t router_id, const std::string &cluster_id, const std::string &target_cluster, const std::string &rw_endpoint, const std::string &ro_endpoint, const std::string &rw_split_endpoint, const std::string &rw_x_endpoint, const std::string &ro_x_endpoint, const std::string &username)=0

virtual std::vector< std::string >	get_routing_mode_queries ()=0

virtual void	require_metadata_is_ok ()
	Verify that host is a valid metadata server. More...

virtual void	require_cluster_is_ok ()=0
	Verify that host is a valid cluster member (either Group Replication or ReplicaSet cluster) More...

virtual std::string	get_cluster_type_specific_id ()=0

virtual ClusterInfo	fetch_metadata_servers ()=0

virtual InstanceType	fetch_current_instance_type ()=0

virtual std::vector< std::string >	get_grant_statements (const std::string &new_accounts) const =0

virtual std::vector< std::tuple< std::string, unsigned long > >	fetch_cluster_hosts ()=0

MySQLSession &	get_session ()

virtual uint64_t	get_view_id (const std::string &)

Protected Member Functions
virtual uint64_t	query_cluster_count ()=0

Protected Attributes
MySQLSession *	mysql_

mysql_harness::SocketOperationsBase *	socket_operations_

mysqlrouter::MetadataSchemaVersion	schema_version_

Constructor & Destructor Documentation

◆ ClusterMetadata()

mysqlrouter::ClusterMetadata::ClusterMetadata	(	const MetadataSchemaVersion &	schema_version,
		MySQLSession *	mysql,
		mysql_harness::SocketOperationsBase *	sockops = `mysql_harness::SocketOperations::instance()`
	)

inline

◆ ~ClusterMetadata()

virtual mysqlrouter::ClusterMetadata::~ClusterMetadata ( )

virtualdefault

Member Function Documentation

◆ fetch_cluster_hosts()

virtual std::vector< std::tuple< std::string, unsigned long > > mysqlrouter::ClusterMetadata::fetch_cluster_hosts ( )

pure virtual

Implemented in mysqlrouter::ClusterMetadataGR, mysqlrouter::ClusterMetadataGRInClusterSet, and mysqlrouter::ClusterMetadataAR.

◆ fetch_current_instance_type()

virtual InstanceType mysqlrouter::ClusterMetadata::fetch_current_instance_type ( )

pure virtual

Implemented in mysqlrouter::ClusterMetadataGRV2, and mysqlrouter::ClusterMetadataAR.

◆ fetch_metadata_servers()

virtual ClusterInfo mysqlrouter::ClusterMetadata::fetch_metadata_servers ( )

pure virtual

Implemented in mysqlrouter::ClusterMetadataGRV2, mysqlrouter::ClusterMetadataGRInClusterSet, and mysqlrouter::ClusterMetadataAR.

◆ get_cluster_type_specific_id()

virtual std::string mysqlrouter::ClusterMetadata::get_cluster_type_specific_id ( )

pure virtual

Implemented in mysqlrouter::ClusterMetadataGR, mysqlrouter::ClusterMetadataGRInClusterSet, and mysqlrouter::ClusterMetadataAR.

◆ get_grant_statements()

virtual std::vector< std::string > mysqlrouter::ClusterMetadata::get_grant_statements ( const std::string & new_accounts ) const

pure virtual

Implemented in mysqlrouter::ClusterMetadataGRV2, and mysqlrouter::ClusterMetadataAR.

◆ get_routing_mode_queries()

virtual std::vector< std::string > mysqlrouter::ClusterMetadata::get_routing_mode_queries ( )

pure virtual

Implemented in mysqlrouter::ClusterMetadataGRV2, and mysqlrouter::ClusterMetadataAR.

◆ get_session()

MySQLSession & mysqlrouter::ClusterMetadata::get_session ( )

inline

◆ get_type()

virtual mysqlrouter::ClusterType mysqlrouter::ClusterMetadata::get_type ( )

pure virtual

Implemented in mysqlrouter::ClusterMetadataGRV2, mysqlrouter::ClusterMetadataGRInClusterSet, and mysqlrouter::ClusterMetadataAR.

◆ get_view_id()

virtual uint64_t mysqlrouter::ClusterMetadata::get_view_id ( const std::string & )

inlinevirtual

Reimplemented in mysqlrouter::ClusterMetadataAR, and mysqlrouter::ClusterMetadataGRInClusterSet.

◆ query_cluster_count()

virtual uint64_t mysqlrouter::ClusterMetadata::query_cluster_count ( )

protectedpure virtual

Implemented in mysqlrouter::ClusterMetadataGRV2, and mysqlrouter::ClusterMetadataAR.

◆ register_router()

virtual uint32_t mysqlrouter::ClusterMetadata::register_router	(	const std::string &	router_name,
		const bool	overwrite,
		const std::string &	hostname_override = `""`
	)

pure virtual

Registers Router in metadata database.

Parameters

router_name	Router name
overwrite	if Router name is already registered, allow this registration to be "hijacked" instead of throwing
hostname_override	If non-empty, this hostname will be used instead of getting queried from OS

Returns: newly-assigned router_id

Exceptions

LocalHostnameResolutionError(std::runtime_error) on hostname query failure, std::runtime_error on other failure

Implemented in mysqlrouter::ClusterMetadataGRV2, and mysqlrouter::ClusterMetadataAR.

◆ require_cluster_is_ok()

virtual void mysqlrouter::ClusterMetadata::require_cluster_is_ok ( )

pure virtual

Verify that host is a valid cluster member (either Group Replication or ReplicaSet cluster)

Exceptions

MySQLSession::Error
std::runtime_error
std::out_of_range
std::logic_error

Implemented in mysqlrouter::ClusterMetadataGR, and mysqlrouter::ClusterMetadataAR.

◆ require_metadata_is_ok()

void ClusterMetadata::require_metadata_is_ok ( )

virtual

Verify that host is a valid metadata server.

Exceptions

MySQLSession::Error
std::runtime_error
std::out_of_range
std::logic_error

checks that the server

has the metadata in the correct version
contains metadata for the group it's in (in case of GR cluster) (metadata server group must be same as managed group currently)

Reimplemented in mysqlrouter::ClusterMetadataGRInClusterSet.

◆ update_router_info()

virtual void mysqlrouter::ClusterMetadata::update_router_info	(	const uint32_t	router_id,
		const std::string &	cluster_id,
		const std::string &	target_cluster,
		const std::string &	rw_endpoint,
		const std::string &	ro_endpoint,
		const std::string &	rw_split_endpoint,
		const std::string &	rw_x_endpoint,
		const std::string &	ro_x_endpoint,
		const std::string &	username
	)

pure virtual

Implemented in mysqlrouter::ClusterMetadataGRV2, mysqlrouter::ClusterMetadataGRInClusterSet, and mysqlrouter::ClusterMetadataAR.

◆ verify_router_id_is_ours()

virtual void mysqlrouter::ClusterMetadata::verify_router_id_is_ours	(	const uint32_t	router_id,
		const std::string &	hostname_override = `""`
	)

pure virtual

Checks if Router with given id is already registered in metadata database, and belongs to our machine.

Parameters

router_id	Router id
hostname_override	If non-empty, this hostname will be used instead of getting queried from OS

Exceptions

LocalHostnameResolutionError(std::runtime_error)	on hostname query failure
std::runtime_error	if router_id doesn't exist, or is associated with a different host
MySQLSession::Error(std::runtime_error)	on database error

Implemented in mysqlrouter::ClusterMetadataGRV2, and mysqlrouter::ClusterMetadataAR.

Member Data Documentation

◆ mysql_

MySQLSession* mysqlrouter::ClusterMetadata::mysql_

protected

◆ schema_version_

mysqlrouter::MetadataSchemaVersion mysqlrouter::ClusterMetadata::schema_version_

protected

◆ socket_operations_

mysql_harness::SocketOperationsBase* mysqlrouter::ClusterMetadata::socket_operations_

protected

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

router/src/router/src/cluster_metadata.h
router/src/router/src/cluster_metadata.cc

Public Member Functions

Protected Member Functions

Protected Attributes

Constructor & Destructor Documentation

◆ ClusterMetadata()

◆ ~ClusterMetadata()

Member Function Documentation

◆ fetch_cluster_hosts()

◆ fetch_current_instance_type()

◆ fetch_metadata_servers()

◆ get_cluster_type_specific_id()

◆ get_grant_statements()

◆ get_routing_mode_queries()

◆ get_session()

◆ get_type()

◆ get_view_id()

◆ query_cluster_count()

◆ register_router()

◆ require_cluster_is_ok()

◆ require_metadata_is_ok()

◆ update_router_info()

◆ verify_router_id_is_ours()

Member Data Documentation

◆ mysql_

◆ schema_version_

◆ socket_operations_