driver

type CandidacyEvaluator interface {
	Promotable(ctx context.Context) (ok bool, reason string)
	ReplicationLagBytes(ctx context.Context) (int64, error)
}

type Driver interface {
	Type() Engine
	Lifecycle
	CandidacyEvaluator
	RoleApplier
	StatusReporter
}

type Engine int

type FailoverPolicyApplier interface {
	SetFailoverPolicy(clusterconfig.FailoverPolicy)
}

type Health struct {
	Alive     bool
	Writable  bool
	Role      Role
	LastError string
	Details   any
}

type Lifecycle interface {
	Start()
	Stop()
	SetupBootstrap(ctx context.Context) error
}

type MGRLifecycle interface {
	IsMGRMode() bool
	MGRPrimaryPhase1Done(ctx context.Context) (bool, error)
	MGRClusterWritableReady(ctx context.Context) (bool, error)
	ApplyPrimaryMGRPhase2(ctx context.Context) error
	// MGRReplicaJoined reports whether local mysqld is a live MGR secondary.
	MGRReplicaJoined(ctx context.Context) (bool, error)
}

type PrimaryRef struct {
	MemberID string
	Host     string
	Port     int
}

type ReplicaConnectivity interface {
	ReplicaConnectedToPrimary(ctx context.Context, primary PrimaryRef) (bool, error)
}

type Role int

type RoleApplier interface {
	ApplyPrimary(ctx context.Context) error
	ApplyReplica(ctx context.Context, primary PrimaryRef) error
	Demote(ctx context.Context) error
}

type StatusReporter interface {
	Status(ctx context.Context) (Health, error)
}