Decide whether a stored server version may move to a target server version. More...

#include <server_version_transition.h>

Public Types
enum class	Result { ACCEPTED , INVALID_SERVER_UPGRADE_NOT_LTS , INVALID_SERVER_UPGRADE_SKIPS_LTS_LINEAGE , BEYOND_SERVER_UPGRADE_THRESHOLD , INVALID_SERVER_DOWNGRADE_NOT_PATCH , NO_PATCH_DOWNGRADE_FOR_INNOVATION_RELEASES , BEYOND_SERVER_DOWNGRADE_THRESHOLD }

Public Member Functions
	Server_version_transition (My_server_version source, My_server_version target)

Result	evaluate () const

bool	check_and_report () const
	Emit the matching error-log message if evaluate() rejects the transition. More...

Private Attributes
My_server_version	m_source

My_server_version	m_target

Detailed Description

Decide whether a stored server version may move to a target server version.

This class is intentionally independent of DD_properties and THD. Tests can construct it directly from persisted source-version details and target metadata, inspect the pure Result from evaluate(), and leave error-log side-effects to check_and_report().

Member Enumeration Documentation

◆ Result

enum class dd::bootstrap::Server_version_transition::Result

strong

Enumerator
ACCEPTED
INVALID_SERVER_UPGRADE_NOT_LTS
INVALID_SERVER_UPGRADE_SKIPS_LTS_LINEAGE
BEYOND_SERVER_UPGRADE_THRESHOLD
INVALID_SERVER_DOWNGRADE_NOT_PATCH
NO_PATCH_DOWNGRADE_FOR_INNOVATION_RELEASES
BEYOND_SERVER_DOWNGRADE_THRESHOLD

Constructor & Destructor Documentation

◆ Server_version_transition()

dd::bootstrap::Server_version_transition::Server_version_transition	(	My_server_version	source,
		My_server_version	target
	)

Member Function Documentation

◆ check_and_report()

bool dd::bootstrap::Server_version_transition::check_and_report ( ) const

Emit the matching error-log message if evaluate() rejects the transition.

Return values

false	Transition accepted.
true	Transition rejected and error reported.

◆ evaluate()

Server_version_transition::Result dd::bootstrap::Server_version_transition::evaluate ( ) const

Member Data Documentation

◆ m_source

My_server_version dd::bootstrap::Server_version_transition::m_source

private

◆ m_target

My_server_version dd::bootstrap::Server_version_transition::m_target