component

type DBManager interface {
	IsRunning() bool

	IsDBStartupReady() bool

	// Functions related to cluster initialization.
	InitializeCluster(context.Context, *dcs.Cluster) error
	IsClusterInitialized(context.Context, *dcs.Cluster) (bool, error)
	IsCurrentMemberInCluster(context.Context, *dcs.Cluster) bool

	// Functions related to cluster healthy check.
	IsCurrentMemberHealthy(context.Context) bool
	IsClusterHealthy(context.Context, *dcs.Cluster) bool

	// Member healthy check
	IsMemberHealthy(context.Context, *dcs.Cluster, *dcs.Member) bool
	HasOtherHealthyLeader(context.Context, *dcs.Cluster) *dcs.Member
	HasOtherHealthyMembers(context.Context, *dcs.Cluster, string) []*dcs.Member

	// Functions related to member check.
	IsLeader(context.Context, *dcs.Cluster) (bool, error)
	IsLeaderMember(context.Context, *dcs.Cluster, *dcs.Member) (bool, error)
	IsFirstMember() bool

	AddCurrentMemberToCluster(*dcs.Cluster) error
	DeleteMemberFromCluster(*dcs.Cluster, string) error

	// Functions related to HA
	Promote() error
	Demote() error
	Follow(*dcs.Cluster) error
	Recover()

	GetHealthiestMember(*dcs.Cluster, string) *dcs.Member

	GetCurrentMemberName() string
	GetMemberAddrs(*dcs.Cluster) []string

	// Functions related to account manage
	IsRootCreated(context.Context) (bool, error)
	CreateRoot(context.Context) error

	// Readonly lock for disk full
	Lock(context.Context, string) error
	Unlock(context.Context) error

	GetLogger() logger.Logger
}

type DBManagerBase struct {
	CurrentMemberName string
	ClusterCompName   string
	Namespace         string
	DataDir           string
	Logger            logger.Logger
	DBStartupReady    bool
}

type FakeManager struct {
	DBManagerBase
}