types

type BackendIDByServiceIDSet map[uint16]map[loadbalancer.BackendID]struct{} // svc ID => backend ID

type LBMap interface {
	UpsertService(*UpsertServiceParams) error
	UpsertMaglevLookupTable(uint16, map[string]*loadbalancer.Backend, bool) error
	IsMaglevLookupTableRecreated(bool) bool
	DeleteService(loadbalancer.L3n4AddrID, int, bool, loadbalancer.SVCNatPolicy) error
	AddBackend(*loadbalancer.Backend, bool) error
	UpdateBackendWithState(*loadbalancer.Backend) error
	DeleteBackendByID(loadbalancer.BackendID) error
	AddAffinityMatch(uint16, loadbalancer.BackendID) error
	DeleteAffinityMatch(uint16, loadbalancer.BackendID) error
	UpdateSourceRanges(uint16, []*cidr.CIDR, []*cidr.CIDR, bool) error
	DumpServiceMaps() ([]*loadbalancer.SVC, []error)
	DumpBackendMaps() ([]*loadbalancer.Backend, error)
	DumpAffinityMatches() (BackendIDByServiceIDSet, error)
	DumpSourceRanges(bool) (SourceRangeSetByServiceID, error)
}

type NodeAddressing interface {
	IPv6() NodeAddressingFamily
	IPv4() NodeAddressingFamily
}

type NodeAddressingFamily interface {
	// Router is the address that will act as the router on each node where
	// an agent is running on. Endpoints have a default route that points
	// to this address.
	Router() net.IP

	// PrimaryExternal is the primary external address of the node. Nodes
	// must be able to reach each other via this address.
	PrimaryExternal() net.IP

	// AllocationCIDR is the CIDR used for IP allocation of all endpoints
	// on the node
	AllocationCIDR() *cidr.CIDR

	// LocalAddresses lists all local addresses
	LocalAddresses() ([]net.IP, error)

	// LoadBalancerNodeAddresses lists all addresses on which HostPort and
	// NodePort services should be responded to
	LoadBalancerNodeAddresses() []net.IP
}

type SourceRangeSetByServiceID map[uint16][]*cidr.CIDR // svc ID => src range CIDRs

type UpsertServiceParams struct {
	ID   uint16
	IP   net.IP
	Port uint16

	// PreferredBackends is a subset of ActiveBackends
	// Note: this is only used in clustermesh with service affinity annotation.
	PreferredBackends         map[string]*loadbalancer.Backend
	ActiveBackends            map[string]*loadbalancer.Backend
	NonActiveBackends         []loadbalancer.BackendID
	PrevBackendsCount         int
	IPv6                      bool
	Type                      loadbalancer.SVCType
	NatPolicy                 loadbalancer.SVCNatPolicy
	ExtLocal                  bool
	IntLocal                  bool
	Scope                     uint8
	SessionAffinity           bool
	SessionAffinityTimeoutSec uint32
	CheckSourceRange          bool
	UseMaglev                 bool
	L7LBProxyPort             uint16                   // Non-zero for L7 LB services
	Name                      loadbalancer.ServiceName // Fully qualified name of the service
	LoopbackHostport          bool
}